KR20230001685A - weft inlay apparatus and method of double raschel machine - Google Patents

Abstract

In the present invention, a pair of weft supplying parts arranged with the front and rear needle bars interposed therebetween and reciprocating along rows of the front and rear needle bars are disposed between the front and rear sinker groups and the tip of the yarn discharge pipe of the pair of weft supplying parts. It relates to a weft insertion device in a double raschel machine including a weft finger unit for inserting weft yarn supplied from a pair of weft supply units and extending along rows of front and rear needle bars during warp knitting.

Description

Weft inlay apparatus and method of double raschel machine {weft inlay apparatus and method of double raschel machine}

The present invention relates to a weft insertion device and method in a double raschel machine.

Double Lassel machines were originally made to produce double-sided warp knit fabrics. The use of two needle bars has opened a new horizon in warp knitting, and various types of machines are being manufactured for the production of a vast range of products from warp knitted fabrics for packaging to artificial blood vessels.

In order to show the working process of the double Lassel machine, the simple form of knitting elements is shown in Figure 1, where the parts marked f and b are two needle bars, the parts marked 1 and 2 are two guide bars, , two trick plates and two sinker bars are also shown.

The double needle bar machine is almost symmetrical and the needle bars can be distinguished from front to back only by the position of the batching mechanism.

The front and rear needle bars are made to establish a knitting relationship in each guide bar and needle bar.

The needle bars move up and down independently, and the guide bars perform a swing motion between the needles of each bar in sequence.

A simplified knitting cycle is shown in FIG. 2 and described as follows.

Step 1 - The guide bars are above the rear needle bar and are located at the back of the machine. The front sinker bar is positioned forward to hold the warp knit fabric while the front needle bar is raised to the clearing position. The guide bar swings toward the hook after performing an underlap shogging motion with respect to the front needle bar.

Step 2 - On the hook side of the front needle bar, the guide bar swings backward after overlapping shogging according to the pattern device.

Step 3 - When the backward swing movement is complete, the yarn is wound within the needle hook and the front needle bar begins to descend. The rear sinker moves forward while the front sinker bar retracts.

Step 4 - When the front needle bar descends, the loop formed immediately before being placed on the stem of the needle closes the latch. The front sinker bar continues to retract, and the rear sinker bar is on top of the rear needle bar. The guide bar swings forward to complete knitting at the top of the rear needle bar. An underlap shogging exercise on the back needle bar may begin.

Step 5 - The front needle bar is in the knockover position, and the needle forms a new loop. The rear needle bar rises to the clearing position with the warp knitted fabric fixed by the sinker bar.

The work sequence described above is only half of the knitting cycle, and the movement of the rear needle bar is the same as that of the front needle bar. Each knitting cycle of the double raschel machine includes 6 swing movements performed by the camshaft.

The configuration diagram for the double needle bar is different from that of the single needle bar. Two rows of dots are required to represent one knitting cycle of a double raschel group. Dots in the first row represent knitting courses of the front needle bar, and dots in the second column represent knitting coats of the rear needle bar.

The up-down movement of the needles as well as the swing movement of the guide bars are continuously performed by the drive mechanism. Different arrangements and effects are performed by the pattern machine.

When the double-sided guide bars move in the same direction in a one-to-one lapping motion, as shown in Fig. 3, the same needles are successively wound by the same thread to create a discontinuous chain. 3 shows the movement of the guide bar between the two needle bars. Observing this lapping movement, the needles of the front needle bar are always wound with a movement of 2-0, while the needles of the rear needle bar are wound with a movement of 2-4.

1 and 1 wrapping movements are not normally used on double bar needle machines.

To make a continuous knit, it is customary to double each wrapping movement and then form the underwrap.

A double-sided warp knitted fabric is formed according to the lapping motion of FIG. 4 . The two guide bars perform overlapping on both needle bars.

The chain sign is as follows.

Guide bar 1: 2-0-2-0/2-4-2-4

Guide bar 2: 2-4-2-4/2-0-2-0

Each knitting cycle uses four chain links, two for the first step (front needle bar sequence) and two for the second step.

To produce two separate fabrics, one on the front needle bar and one on the back needle bar, as shown in Figure 5, each guide bar knitting only on one needle bar. The swing motion is not changed, but each guide bar does not overlap the needle bar with respect to either needle bar, thereby connecting the thread of the guide bars to either needle bar.

The first guide bar overwraps the front needle bar during the first knitting step while swinging the second needle bar back and forth without overwrapping, and again overwraps the needles of the front needle bar during the second knitting step. In the same way the second guide bar only overlaps the rear needle bar. Two separate fabrics are formed, each with a one-to-one structure.

The chain representation for this case is:

Guide bar 1: 2-0-2-2/2-4-2-2

Guide bar 2: 2-2-2-0/2-2-2-4

If the guide bars cross the lapping movement, as shown in Fig. 6, that is, if the guide bar 1 overlaps the rear needle bar and the guide bar 2 overlaps the front needle bar, then the underlap binds them together. Two knits are formed.

The chain indication is as follows.

Guide bar 1: 2-2-2-0/2-2-2-4

Guide bar 2: -0-2-2/2-4-2-2

To increase knitability, a third guide bar can be added between the previous two bars. When the third guide bar is threaded on one guide finger, the two separate knits formed by all threaded guide bars can be connected, as shown in FIG. 7A. A fabric made in this way can be double the width of the knitted fabric.

By threading the middle guide bar through two guide fingers, one on each side, a tubular fabric is formed, as shown in FIG. 7B.

When all intermediate guide bars are threaded, they are used to make the fabric of the sandwich connected by the thread. When this fabric is cut by special equipment, it separates into two plush fabrics. The principle is shown in Figure 7c.

The chain marks for the three guide bars are shown below.

Guide bar 1: 2-0-2-2/2-4-2-2

Guide bar 2: 2-0-2-0/2-4-2-4

Guide bar 3: 2-2-2-0/2-2-2-4

Using more guide bars can result in a much denser fabric for each needle bar.

In order to increase the density of such a fabric, three-dimensional warp knitted fabrics are made in a double Lassel machine using 5 to 8 guide bars. As an example of this, as shown in FIG. 9, a three-dimensional warp knitted fabric, as shown in FIG. 8, can be made using six guide bars provided in a double Lassel machine.

The three-dimensional warp knitted fabric is, these days, applied to a three-dimensional warp knitted fabric for fabric-reinforced concrete for concrete reinforcement.

However, the three-dimensional warp knitted fabric made of the double Raschel machine is knitted in the longitudinal direction only by the warp, and thus has a problem that it is vulnerable to tensile force in the transverse direction.

Therefore, it is necessary to insert the weft yarn during knitting in the existing double Lassel machine to create a three-dimensional knitted fabric by the weft yarn and the warp yarn.

However, in the existing Rassel machine, in order to introduce the weft yarn into knitting, as shown in FIG. 10, the weft guide bar disposed on the far left crosses a plurality of warp guide bars arranged side by side in the horizontal direction in the horizontal direction. Since it crosses, it has a problem that it cannot be applied to wide fabrics.

The present invention has an object to solve the above-mentioned problems.

In the present invention, a pair of weft supplying parts disposed with front and rear needle bars interposed therebetween and reciprocating along rows of the front and rear needle bars, and a pair disposed between the front and rear sinkers and the tip of the yarn discharge pipe of the pair of weft supply parts The above problems can be solved by providing a weft insertion device in a double raschel machine including a weft finger unit for inserting the weft yarn supplied from the weft supply unit and extending along the rows of the front and rear needle bars during warp knitting.

The present invention can provide a three-dimensional warp knitted fabric for fabric-reinforced concrete at low manufacturing cost and maintenance cost by applying a weft insertion device having a simple configuration to an existing double raschel machine by means of the above problem solving means.

1 is a conceptual diagram showing, from one side, components responsible for knitting in a conventional double-Lassel machine;
Figure 2 is a conceptual diagram sequentially showing a state in which the guide bar and needle are operated for knitting in the double lassel machine of Figure 1 from one side;
3 is a conceptual diagram showing a state when both guide bars are lapping in the same direction in the double Lassel machine of FIG. 1;
4 is a conceptual diagram showing a state of knitting a double-sided knitted fabric in the double Lassel machine of FIG. 1;
5 is a conceptual diagram showing a state of knitting two knitted fabrics separated from the double raschel machine of FIG. 1;
6 is a conceptual diagram showing a state of knitting a knitted fabric in which front and back fabrics are bound to each other in the double Lassel machine of FIG. 1;
7 is a conceptual diagram showing a state of knitting a knitted fabric in which front and back fabrics are connected to each other in the double Lassel machine of FIG. 1;
8 is a conceptual perspective view showing a three-dimensional knitted fabric made by a conventional double Lassel machine;
9 is a conceptual diagram showing a conventional double Lassel machine for producing the three-dimensional knitted fabric of FIG. 8 from one side;
10 is a conceptual diagram showing a method of inserting weft yarns into warp knitting in a conventional double raschel machine;
11 is a side conceptual diagram showing a state in which the weft insertion device according to the present invention is disposed in a conventional double raschel machine;
12 to 17 show a state in which the weft insertion device according to the present invention is disposed in a normal double lassel machine, with a needle bar group, a sinker group, and a finger part in side views on the left and right, and a plan view in the center of the weft supply part, sinker part, and finger part. Illustrated, a view sequentially showing the steps in which the weft is inserted by the weft insertion device,
18 to 19 are views sequentially showing steps in which the weft is inserted by the weft inserting device of FIG. 11;

Hereinafter, the weft inserting device of the embodiment according to the present invention will be described in detail with reference to FIGS. 11 to 19.

In Fig. 11, the weft inserting device of an embodiment according to the present invention is indicated by the reference numeral 100.

As shown in FIGS. 11 and 12, the weft insertion device 100 is disposed with the front and rear needle bar groups 10b and 10f provided at intervals in the front and rear directions of the double lassel machine, interposed between the front and rear sides. Front and rear weft supplying parts 20b and 20f reciprocating along the rows of needle bar groups 10b and 10f; And the front and rear sinker A groups 30b and 30f provided on the double Lassel machine with the front and rear needle bar groups 10b and 10f interposed therebetween and the front and rear weft supply units 20b and 20f. Weft discharge pipes 21 provided respectively Front and rear weft fingers 40b for inserting the weft yarn T, which is disposed between the front ends and supplied from the front and rear weft supply units 20b and 20f and extends along the front and rear needle bar groups 10b and 10f, into the warp knitted fabric. , 40f).

Each of the front and rear weft weft supply units 20b and 20f includes a slider base 22 extending along the front and rear needle bar groups 10b and 10f; a rail 23 extending in the longitudinal direction of the slider base 22 and formed on the slider base 22; a carrier 24 coupled to the rail 23 to be movable along the rail 23; a weft discharge pipe 21 having a base end mounted on the carrier 24 and extending toward the front and rear needle bar groups 10b and 10f; a driving pulley 25 and a driven pulley 26 rotatably mounted on both ends of the slider base 22; a belt 27 having both ends fixed to the carrier 24 in a state where it is wound around the drive pulley 25 and the driven pulley 26 in an endless orbit; A first forward and reverse motor (not shown) mounted on the slider base 22 and rotationally driving the drive pulley 25 forward and reverse, and a unwinding weft yarn provided to be unwinded at the upper center of the main body (not shown) of the double Lassel machine, It includes a weft bobbin (not shown) passing through the weft discharge pipe 21.

The tip of the weft thread unwound from the weft bobbin comes out to the tip side through the proximal side of the weft discharge pipe 21 and is fixed to one end in the width direction of the warp flattened knitted fabric by the front and rear needle bar groups 10b and 10f.

Hooks of the front and rear needle bar groups 10b and 10f by temporarily walking the weft yarn T passed from the front and rear weft fingers 40b and 40f to the tips of the front and rear sinker groups 30b and 30f A weft walking groove 31 is formed so that it can be passed on.

Each of the front and rear weft fingers 40b and 40f is disposed between the weft discharge pipe 21 and the corresponding sinker group among the front and rear sinker groups 30b and 30f, and the front and rear needle bar groups 10b, 10f), both ends of which are rotatably mounted on a main body (not shown) of the double Lassel machine, and are rotated forward and reversely driven by a second forward and reverse motor (not shown) (32); And it is fixedly circumscribed at both ends of the rotating shaft 32 in the longitudinal direction, and the walking groove 31 of the corresponding sinker group among the front and rear sinker groups 30b and 30f walks the weft yarn supplied to the weft discharge pipe 21. ) It includes a pair of fingers 33 having a criss-cross shape so that it can be passed on.

Since the pinker 33 has a crisscross shape, four latch grooves 33a are formed with a phase difference of 90 degrees.

The weft inserting device 100 configured as above can be operated as shown in FIGS. 12 to 19 and as follows.

First, the left side of the double raschel is set as a starting point, and the carrier 24 is moved to the char side.

Then, after the front end of the weft thread (T) wound on the weft bobbin comes out through the weft discharge pipe 21 and is fixed to the left end of the initial knitted fabric temporarily made by the double raschel machine, the pair of fingers ( 33) is rotated 90 degrees in the forward direction so that one finger 33 disposed on the left side of the pair of fingers 33 walks the weft thread T while the weft thread T is passed through the weft discharge pipe ( 21) to complete the setting, as shown in Figs. 12A and 18A.

Then, as shown in FIG. 12B, when the carrier 24 is moved to the right, the weft thread T is unwound and extended along the front and rear needle bar groups 10b and 10f to the weft discharge pipe 21. make it close

Then, as shown in FIGS. 13C and 18B, the pair of fingers 33 are rotated 180 degrees in the reverse direction so that the unwound and arranged weft yarns T are retracted front and rear sinker groups 30f and 30b Among them, the weft yarn 1 is positioned to face the walking groove 31 of the corresponding sinker group.

Then, as shown in FIGS. 13D and 18C, the sinker group is advanced toward the corresponding needle bar group among the front and rear needle bar groups 10b and 10f to suppress the weft yarn T while the weft yarn T walks To be walked in the groove (31).

Then, as shown in FIGS. 14E and 19D, warp knitting is performed, and then the weft is entered into the corresponding needle bar group among the front and rear needle bar groups 10b and 10f that are rising to insert the warp yarn into the warp knitted material (fabric). The stepped weft yarn (T) advances the corresponding sinker group further.

Then, as shown in FIGS. 14f and 19e, the corresponding needle bar group among the front and rear needle bar groups 10b and 10f that have been raised to insert the weft yarn into the warp knitted fabric descends, and the hook of the corresponding needle bar group moves the weft yarn (T ) is captured and inserted into the warp knitted fabric, and at the same time, the sinker group that has been advanced begins to retreat.

Then, as shown in FIGS. 14F and 19F, the pair of fingers 33 are rotated 90 degrees in the forward direction to remove the weft loop formed on the finger 33 disposed on the left side and prepare for the next course weft thread T .

Then, as shown in Figs. 15G and 15H, the carrier 24 is moved from the rightmost side to the leftmost side.

Then, when the carrier 24 is positioned on the left side, as shown in FIG. 16I, the pair of fingers 33 are rotated 180 degrees in the reverse direction to retract the untwisted and arranged weft threads T. While positioning the weft yarn 1 facing the walking groove 31 of the corresponding sinker group among the front and rear sinker groups 30f and 30b, as shown in FIG. 16j, warp knitting is performed, and then warp yarn In order to be inserted into the knitted fabric (fabric), the stepped weft yarn T is further advanced to the corresponding sinker group to enter the corresponding needle bar group among the front and rear needle bar groups 10b and 10f that are being raised.

Then, as shown in FIG. 17K, among the front and rear needle bar groups 10b and 10f that have been raised to insert the weft into the warp knitted fabric, the corresponding needle bar group descends and the hook of the corresponding needle bar group grabs the weft thread T As soon as it is captured and inserted into the warp knitted fabric, the sinker group that has advanced begins to retreat.

Then, as shown in FIG. 17L, the pair of fingers 33 are rotated 90 degrees in the forward direction to peel off the weft loop formed on the finger 33 disposed on the right side, and the carrier ( 24) from the far left to the far right.

For simplicity of explanation, the above operation sequence is described for any needle bar group among the front and rear needle bar groups 10b and 10f, but is performed simultaneously for any other needle bar group.

When this operation sequence is repeated, in a state in which a three-dimensional warp knitted fabric is made in a double Lassel machine using 5 to 8 guide bars and the front and rear needle bar groups 10b and 10f, the weft yarn T is the three-dimensional Being inserted into the warp knitted fabric, it is possible to provide a three-dimensional warp knitted fabric for fabric-reinforced concrete at low manufacturing cost and maintenance cost.

In the above embodiment, it is described that the weft yarn is applied to both sides of the warp knitted fabric formed by the front and rear needle bar groups 10b and 10f, but the present invention is not limited thereto, and any of the front and rear needle bar groups 10b and 10f It can be applied only to one side of the warp knitted fabric formed by one needle bar group, and in this case, the weft inserting device 100 is used with any one of the front and rear weft supplying parts 20b and 20f and the front and rear weft finger parts 40b and 40f. which one will be included.

T: weft, 10f: front needle bar group, 10b: rear needle bar group, 20f: front weft supply unit, 20b: rear weft supply unit, 21: weft discharge pipe, 22: slider base, 23: rail, 24: carrier, 25: drive Pulley, 26: driven pulley, 27: belt, 30f: front sinker group, 30b: rear sinker group, 31: walking groove, 32: rotating shaft, 33: finger, 33a: latch groove, 40f: front weft finger part, 40b : reverse weft finger part, 100: weft insertion device

Claims (10)

Front and rear weft supplying parts 20b disposed with the front and rear needle bar groups 10b and 10f provided at intervals in the front and rear directions of the double lassel machine interposed therebetween and reciprocating along the rows of the front and rear needle bar groups 10b and 10f. , 20f); and
Between the front and rear sinker groups 30b and 30f provided on the double Lassel machine with the front and rear needle bar groups 10b and 10f interposed therebetween and the front and rear weft supply units 20b and 20f, respectively, between the ends of the weft discharge pipe 21 provided Front and rear weft fingers 40b and 40f for inserting the weft yarn T supplied from the front and rear weft supply units 20b and 20f and extending along the front and rear needle bar groups 10b and 10f into the warp knitted fabric ) Weft insertion device in the double Rassel machine, characterized in that it comprises a. According to claim 1,
Each of the front and back weft weft supplying parts 20b and 20f,
a slider base 22 extending along the front and rear needle bar groups 10b and 10f;
a rail 23 extending in the longitudinal direction of the slider base 22 and formed on the slider base 22;
a carrier 24 coupled to the rail 23 to be movable along the rail 23;
a weft discharge pipe 21 having a base end mounted on the carrier 24 and extending toward the front and rear needle bar groups 10b and 10f;
a driving pulley 25 and a driven pulley 26 rotatably mounted on both ends of the slider base 22;
a belt 27 having both ends fixed to the carrier 24 in a state where it is wound around the drive pulley 25 and the driven pulley 26 in an endless orbit;
A first forward and reverse motor mounted on the slider base 22 to rotate and drive the drive pulley 25 forward and backward; and
The weft insertion device in the double raschel machine, characterized in that it includes a weft bobbin provided to the main body of the double lassel machine to be unwound, and through which the unwound weft passes through the weft discharge pipe (21). According to claim 2,
Each of the front and rear weft fingers 40b and 40f,
It is disposed between the weft discharge pipe 21 and the corresponding sinker group among the front and rear sinker groups 30b and 30f, and extends along the front and rear needle bar groups 10b and 10f, Rotating both ends in the main body of the double Lassel machine a rotating shaft 32 that is mounted to be capable of being rotated forward and reversely driven by a second forward and reverse motor; and
It is fixedly circumscribed to both ends of the rotating shaft 32 in the longitudinal direction, and the walking groove 31 of the corresponding sinker group among the front and rear sinker groups 30b and 30f by walking the weft yarn supplied to the weft discharge pipe 21 A weft insertion device in a double raschel machine, characterized in that it includes a pair of fingers (33) having a criss-cross shape so that it can be handed over. According to claim 3,
The tip of the weft thread unwound from the weft bobbin 29 comes out to the tip side through the proximal end of the weft discharge pipe 21 and is fixed to one end in the width direction of the warp flattened knitted fabric by the front and rear needle bar groups 10b and 10f there is,
Hooks of the front and rear needle bar groups 10b and 10f by temporarily walking the weft yarn T passed from the front and rear weft fingers 40b and 40f to the tips of the front and rear sinker groups 30b and 30f A weft walking groove 31 is formed so that it can be passed on,
The weft inserting device in the double raschel machine, characterized in that the pinker 33 has four latch grooves 33a formed with a phase difference of 90 degrees. In the method of supplying weft yarn using the weft insertion device in the double raschel machine according to claim 4,
A first step of setting the left side of the double raschel as a starting point and moving the carrier 24 to the char side;
After the tip of the weft thread (T) unwound from the weft bobbin comes out through the weft discharge pipe 21 and is fixed to the left end of the initial warp knitted fabric temporarily made by the double Lassel machine, the pair of fingers 33 is rotated 90 degrees in the forward direction to allow one finger 33 disposed on the left side of the pair of fingers 33 to walk the weft thread T while the weft thread T is passed through the weft discharge pipe 21 a second step of completing the setting by adjoining to;
When the carrier 24 is moved to the right side, the weft thread T is unwound and extended along the front and rear needle bar groups 10b and 10f to be adjacent to the weft discharge pipe 21;
The pair of fingers 33 are rotated 180 degrees in the reverse direction so that the unwound and arranged weft threads T are inserted into the walking groove 31 of the corresponding sinker group among the retreated front and rear sinker groups 30f and 30b. The fourth step of positioning (1) face to face;
A fifth step of advancing the sinker group toward the corresponding needle bar group among the front and rear needle bar groups 10b and 10f so that the weft yarn T is walked in the walking groove 31 while suppressing the weft yarn T;
After performing the warp knitting, the stepped weft yarn (T) to enter the corresponding needle bar group among the front and rear needle bar groups (10b, 10f) being raised to insert the weft yarn into the warp knitted fabric. Further advancing the corresponding sinker group Step 6;
Among the front and rear needle bar groups 10b and 10f that have been raised to insert the weft into the warp knitted fabric, the corresponding needle bar group descends, and the hook of the corresponding needle bar group catches the weft yarn (T) and inserts it into the warp knitted fabric being knitted A seventh step in which the corresponding sinker group, which had been advancing at the same time, begins to retreat;
An eighth step of rotating the pair of fingers 33 forward by 90 degrees to peel off the weft loop formed on the fingers 33 disposed on the left side and prepare for the next course weft thread T;
A ninth step of moving the carrier 24 from the rightmost side to the leftmost side;
When the carrier 24 is positioned on the left side, the pair of fingers 33 are rotated 180 degrees in the reverse direction so that the unwound and straightly arranged weft yarns T are removed from the retracted front and rear sinker groups 30f and 30b. While positioning the weft yarn 1 facing the sinker group walking groove 31, warp knitting is performed, and then the corresponding of the front and rear needle bar groups 10b and 10f being raised to insert the weft yarn into the warp knitted fabric A 10th step of further advancing the walked weft yarn (T) to the corresponding sinker group so as to enter the needle bar group;
Among the front and rear needle bar groups 10b and 10f that have been raised to insert the weft into the warp knitted fabric, the corresponding needle bar group descends, and the hook of the corresponding needle bar group catches the weft yarn (T) and inserts it into the warp knitted fabric being knitted An 11th step in which the sinker group, which had advanced at the same time, starts retreating;
The pair of fingers 33 are rotated 90 degrees in the forward direction to remove the weft loop formed on the finger 33 disposed on the right side and move the carrier 24 from the left to the right while preparing for the next course weft thread T. Weft insertion method in a double rassel machine, characterized in that it comprises a twelfth step. A weft supply unit that is disposed to face any one of the needle bar groups of the front and rear needle bar groups 10b and 10f provided at intervals in the front and rear directions of the double lassel machine and reciprocates along the row of the one needle bar group; and
Arranged between any one of the front and rear sinker groups 30b and 30f provided on the double Lassel machine and the tip of the weft discharge pipe 21 provided in the weft supply unit with the front and rear needle bar groups 10b and 10f interposed therebetween and a weft finger unit for inserting the weft yarn (T) supplied from the weft supply unit and extending along one of the needle bar groups into the warp knitted fabric. According to claim 6,
The weft supply unit,
a slider base 22 extending along one of the needle bar groups;
a rail 23 extending in the longitudinal direction of the slider base 22 and formed on the slider base 22;
a carrier 24 coupled to the rail 23 to be movable along the rail 23;
a weft discharge pipe 21 having a base end mounted on the carrier 24 and extending toward one of the needle bar groups;
a driving pulley 25 and a driven pulley 26 rotatably mounted on both ends of the slider base 22;
a belt 27 having both ends fixed to the carrier 24 in a state where it is wound around the drive pulley 25 and the driven pulley 26 in an endless orbit;
A first forward and reverse motor mounted on the slider base 22 to rotate and drive the drive pulley 25 forward and backward; and
The weft insertion device in the double raschel machine, characterized in that it includes a weft bobbin provided to the main body of the double lassel machine to be unwound, and through which the unwound weft passes through the weft discharge pipe (21). According to claim 7,
The weft finger part,
It is disposed between the weft discharge pipe 21 and any one of the sinker groups and extends along any one of the needle bar groups, and both ends are rotatably mounted to the main body of the double Lassel machine and rotated forward and reverse by a second forward and reverse motor a driven rotary shaft 32; and
It is fixedly circumscribed at both ends of the rotating shaft 32 in the longitudinal direction, and the weft yarn supplied to the weft discharge pipe 21 is walked and passed to the walking groove 31 of any one sinker group. Weft insertion device in a double rassel machine, characterized in that it comprises a pair of fingers (33) having a shape. According to claim 8,
The tip of the weft yarn unwound from the weft bobbin comes out to the tip side through the base end of the weft discharge pipe 21 and is fixed to one end in the width direction of the warp knitted fabric warped by one of the needle bar groups,
A weft walking groove 31 is formed at the tip of any one of the sinker groups so that the weft thread (T) passed from the weft finger part can be temporarily walked and passed to the hook of any one of the needle bar groups,
The weft inserting device in the double raschel machine, characterized in that the pinker 33 has four latch grooves 33a formed with a phase difference of 90 degrees. In the method of supplying weft yarn using the weft insertion device in the double raschel machine according to claim 9,
A first step of setting the left side of the double raschel as a starting point and moving the carrier 24 to the char side;
After the tip of the weft thread (T) unwound from the weft bobbin comes out through the weft discharge pipe 21 and is fixed to the left end of the initial warp knitted fabric temporarily made by the double Lassel machine, the pair of fingers 33 is rotated 90 degrees in the forward direction to allow one finger 33 disposed on the left side of the pair of fingers 33 to walk the weft thread T while the weft thread T is passed through the weft discharge pipe 21 a second step of completing the setting by adjoining to;
A third step in which when the carrier 24 is moved to the right, the weft thread T is untwisted and extended along one of the needle bar groups to be adjacent to the weft discharge pipe 21;
The pair of fingers 33 are rotated 180 degrees in the reverse direction so that the unwound and arranged weft threads T are positioned facing the step groove 31 of any one sinker group that has been retracted The fourth step of determining;
A fifth step of advancing any one of the sinker groups toward the corresponding needle bar group among the front and rear needle bar groups 10b and 10f so that the weft yarn T is walked in the walking groove 31 while suppressing the weft yarn T. ;
After performing warp knitting, a sixth step of further advancing the walked weft (T) to any one of the sinker groups so as to enter any one of the rising needle bar groups in order to insert the weft yarn into the warp knitted fabric;
Any one of the needle bar groups that have been raised to insert the weft into the warp knitted fabric is lowered, and the hook of the one of the needle bar groups catches the weft thread (T) and inserts it into the warp knitted fabric being knitted. A seventh step in which one sinker group begins to retreat;
An eighth step of rotating the pair of fingers 33 forward by 90 degrees to peel off the weft loop formed on the fingers 33 disposed on the left side and prepare for the next course weft thread T;
A ninth step of moving the carrier 24 from the rightmost side to the leftmost side;
When the carrier 24 is positioned on the left side, the pair of fingers 33 are rotated 180 degrees in the reverse direction so that the untwisted and straightly arranged weft threads T are retracted to the step groove 31 of any one of the sinker groups. ), while positioning the weft thread 1 facing each other, performing warp knitting, and then inserting the weft thread into the warp knitted fabric so that the walked weft thread T enters the rising needle bar group. A tenth step of further advancing the sinker group;
Any one of the needle bar groups that have been raised to insert the weft into the warp knitted fabric is lowered, and the hook of the one of the needle bar groups catches the weft thread (T) and inserts it into the warp knitted fabric being knitted. An 11th step in which one sinker group starts retreating;
The pair of fingers 33 are rotated 90 degrees in the forward direction to remove the weft loop formed on the finger 33 disposed on the right side and move the carrier 24 from the left to the right while preparing for the next course weft thread T. Weft insertion method in a double rassel machine, characterized in that it comprises a twelfth step.

Images