JPH03174060A - Automatic yarn feeder in intershire type weft knitting machine - Google Patents

Abstract

PURPOSE: To increase the number of yarn feeders and to obtain a knitted fabric having improved sharpness of patterns by extending a yarn feeder holder frame long in the transverse direction in the rear section on an upper side of a needle bed and setting the moving directions of the yarn feeders to four directions; to the right, left, front and rear. CONSTITUTION: The yarn feeder holder frame 30 holding the many yarn feeders 40 is extended long in the transverse direction in the rear section on the upper side of the needle bed 20 and is moved back and forth in the transverse direction by a yarn feeder holder frame forward and backward driving means. About 50 or some pieces of the yarn feeders 40 may be fixed to the holder frame 30 so that about 50 or some kinds of colored yarns can be supplied. A yarn feeder extracting means 30 and a yarn feeder transporting means 80 are installed respectively transversely movably back and forth to guide rails 60A and 60B for transporting the yarn feeder. A yarn feeder transporting driving means 100 is installed in combination. The yarn feeders 40 move to a holder 81 by passing between needles 21 and needles 21. The yarn feeder guide grooves for the same are also moved in forward and backward moving directions.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an intarsia type flat knitting machine, and more specifically, the present invention relates to an intarsia type flat knitting machine. This invention relates to an automatic yarn feeding device for an intarsia type flat knitting machine, which knits into distinct divisions to further improve the clarity of the pattern.

[Conventional technology]

In general, intarsia type flat knitting machines are designed to produce knitted fabrics with a variety of colors and patterns, to express fresh colors and to obtain knitted fabrics with patterns that give a three-dimensional effect. In addition, knitted fabrics knitted with intarsia type flat knitting machines are formed with a single stitch (knit) pattern, so compared to double jacquard type knitted fabrics, they have excellent elasticity and are lighter in weight. It has been widely used in recent years because of its vivid colors.

In such a conventional intarsia flat knitting machine, an operator counts the number of stitches between the colored threads that will become the basis of the knitted fabric and the colored threads that will form the pattern. The knitted fabric was knitted by manually threading it onto a corresponding needle. ■
Recently, a computer has been put into practical use in the intarsia type flat knitting machine, which improves knitting efficiency even more than before.

[Problem to be solved by the invention]

However, the conventional intarsia method described above
On the knitting machine, the worker must read the knitting graph and hang the necessary colored thread onto the set needle, which is a complicated process and requires considerable skill. There was a drawback. In addition, it is difficult to maintain appropriate tension because the operator manually pulls the yarn supplied through the yarn path from each supply system package (for example, a cone) to maintain a predetermined tension. However, there were disadvantages in that defective products were produced, productivity decreased, and quality deteriorated. In addition, in the intarsia type flat knitting machine using a computer as described in item (2) above, a large number of guide rails are installed and yarn guide tubes are respectively engaged with the guide rails, so that the yarn guide tubes are aligned in a straight line. Since the knitting is done by hooking the colored yarn inserted into the thread guide tube onto the needle while moving back and forth, the guide rail imposes restrictions on the arrangement of the thread guide tubes, so that more than 10 thread guide tubes can be placed. The disadvantage was that it was not possible to install thread guide tubes, and therefore patterns with a variety of colors could not be knitted. Furthermore, each of the yarn guide tubes reciprocates only linearly along the guide rail,
Since the colored thread inserted into the yarn guide tube is knitted by passing it over a needle, the boundary between the knitted pattern and the ground is not clear, and the border of the pattern is double-crossed. There was a drawback that the sharpness decreased because the image was exposed.

In order to solve these problems, the inventors of the present invention have conducted extensive research and have attempted to provide the following automatic yarn feeding device for an intarsia type flat knitting machine.

[Means to solve the problem]

That is, an object of the present invention is to create knitted fabrics with various colors and patterns by installing and controlling dozens of yarn guide tubes without being limited by the number of yarns forming the ground and pattern of knitted fabrics. It is an object of the present invention to provide an automatic yarn feeding device for an intarsia type flat knitting machine that achieves the following. Another object of the present invention is to knit a precise pattern by threading threads of various colors that form the knitted material and pattern onto needles at precise positions, and to make sure that the boundary between the knitted pattern and the material is two-dimensional. To provide an automatic yarn feeding device for an intarsia type flat knitting machine, which can obtain high-quality knitted fabrics in which the clarity of the pattern is greatly improved by clearly dividing the patterns without overlapping them.

The object of the present invention is to provide a carriage that reciprocates on the needle bed of the machine.
A device capable of automatically supplying yarn to a large number of needles that are raised and lowered by , a thread guide tube storage stand on which the thread guide tube fixing device is fixedly installed, a thread guide tube storage stand reciprocating drive means for reciprocating the yarn guide tube storage stand in the transverse direction, and a thread guide tube storage stand that is clamped to the thread guide tube storage stand. a thread pipe extraction means for extracting the extracted thread pipe to a thread pipe transporting position; a thread pipe transporting means for holding and transporting the thread pipe extracted from the thread pipe storage stand; This is achieved by comprising a means and a thread pipe transport drive means for reciprocating the thread pipe extracting means in the transverse direction.

Further, in the automatic yarn feeding device for an intarsia type flat knitting machine according to the present invention, a plurality of pairs of yarn guide pipe fixing devices are formed and fixed on one yarn guide pipe storage stand, and the yarn Each thread pipe held by the pipe fixing device can be freely moved to the front, back, left, and right sides, and thread can be automatically supplied to the needles at the required positions, so that the knitted fabric can be easily moved. Various colored threads forming the patterns are threaded onto needles at precise positions to knit vividly colored patterns to obtain high-quality knitted fabrics. In addition, compared to conventional methods, a much larger number (for example, more than 100) of thread guide pipe fixing devices are fixedly installed, and a large number of thread guide tubes (more than 50) are held between the thread guide pipe fixing devices and the threads are removed. By controlling the vessels appropriately, it is possible to obtain a knitted fabric having a pattern of various colors with improved definition and a clearly demarcated boundary between the knitted fabric pattern and the background.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 4, reference numeral 10 indicates a part of an intarsia type flat knitting machine to which the automatic yarn supplying device according to the present invention is applied, and the front side (first On the front side in the figure, a needle bed (20) is installed long in the transverse direction with an incline in the front-rear direction (the front side in Figure 1), and the needle bed (20) is equipped with a hook (21A) and a spatula ( A large number of needles (21>) having 21B> and Butt (21C) are arranged in the transverse direction.The needles (21) are arranged in the transverse direction on the needle bed (20). Carriage that moves back and forth (
22) cam groove (not shown) and the aforementioned rose) (21C)
The hook (2
, 1A) and a spatula (21B>) to knit the fabric.In addition, a large number of yarn guide tubes (40
) is extended in the transverse direction, and the thread pipe storage stand (30) can be reciprocated in the transverse direction by means of a reciprocating drive means (50) for the thread pipe storage stand (50). Also, the front surface (
A number of pairs of thread tube fixing devices (31) are formed and fixed with a predetermined pitch gap in the portion (front view in FIG. 1), and the thread tube storage stand (30) is Extraction frame guide holes (32) are formed between each of the fixed thread pipe fixing devices (31) (see Fig. 3).
. Further, each of the thread guide tube fixing devices (31>) is formed of a pair of elastic pieces and holds a cylindrical thread guide tube (40) under pressure, and about 50 of them are placed in the thread guide tube storage stand (30). The thread duct (
40〉 can be fixed, making it possible to supply more than 1.50 types of colored threads. In addition, the yarn guide tube storage stand (30) is moved in the linear direction (the first
The robot is guided so that it can move to the left or right in the figure. or,
The filament tube (40) has a substantially cylindrical shape, and its lower portion is formed into a substantially conical shape toward the distal end. Furthermore,
The yarn guide tube storage platform reciprocating drive means (50) includes a motor (
The binion (52) rotated by the pinion (51) and the pinion (
52>, the motor (51) is fixed to the machine base (11), and the rack (53) is fixed to the yarn guide tube storage stand (30). .

A pair of guide rails (60A) (60B) for transporting thread pipes are installed above the thread pipe storage stand (30).
11), and a thread pipe extracting means (70) and a thread pipe transporting means (80) are installed in the guide rails (60A) and (60B') for transporting the thread pipe in the transverse direction, respectively. A thread pipe transporting drive means (100) is installed to allow reciprocating movement between the thread pipe extracting means (70) and the thread pipe transporting means (80>).

Further, the thread duct extracting means (70>) is selectively guided to an extraction frame guide hole (32) formed in the thread duct storage stand (30) to remove the thread duct fixing device (31). An extraction frame (71) for extracting the clamped thread guide tube (40), and an extraction rod driving means (for reciprocating the extraction frame (71) in the front and rear directions).
72). In addition, the extraction frame (71
) is always maintained in a state inserted into the extraction frame guide hole (32), and when extracting the thread guide tube (40) clamped by the thread guide tube fixing device (31), the The extraction rod driving means (72) is configured to project forward (left side in FIG. 3) from the extraction frame guide hole (32>) and push out the yarn guide tube (40). A connection that connects a cam plate (74) rotated by a motor (73), a crank bin (75) eccentrically fixed to the cam plate (74), the crank pin (75), and the extraction frame (71). Ingredients (7)
6). The yarn guide tube extracting means (70) is guided in a straight line by a guide roller (77) on the guide rail (60A).

Further, the thread pipe transporting means (80>) includes a thread pipe holder (81) that holds the thread pipe (40) extracted from the thread pipe fixing device (31) of the thread pipe storage stand (30). ) and the thread guide tube held in the thread guide tube holder (81) (
40) to the thread pipe storage table (30) side. The yarn guide tube holder (81) includes a holder body (82), a substantially U-shaped yarn guide groove (83) formed in the holder body (82), and a yarn guide groove (83) formed in the holder body (82). A pair of jaws formed on both sides of (83) (84)
and an elastic member (8) that brings the jaws (84) into close contact with each other.
5). As shown in FIG. 4(A), the elastic member (85) is exemplified as a coil spring, but is not limited to this coil spring, and a leaf spring or elastic rubber may also be used. However, the jaw (84> itself) can be used by bending an elastic plate.Furthermore, the yarn guide tube extracting means (86) can extract the yarn guide held in the yarn guide tube holder (81). Pipe (4
0) to the side of the thread pipe storage stand (30)
87) and an extraction line drive means (88) that reciprocates the extraction frame (87) in the front and back direction. The extraction line driving means (88) is a motor (89).
a cam plate (90) that rotates by a cam plate (90), a crank bin (91) that is eccentrically fixed to the cam plate (90), and a connector (91) that connects the crank bin (91) and the extraction rod (87).
92). Further, the yarn guide tube conveying means (80) is guided by the guide rail (60B) by guide rollers (93) so that it can move in a straight line.

The thread pipe transporting drive means (100) for reciprocating the thread pipe extracting means (70) and the thread pipe transporting means (80) in the transverse direction includes a pair of thread pipe transport drive means (100) which are rotated by a motor (101). The motor (101) is composed of a pinion (102A) (102B) and each rack (103A) (103B) meshed with the pinion (102A) (102B), and the motor (101) is driven by the guide rail (60A) (
60B), and the rack (103A) (10
3B> are respectively connected to the thread tube extracting means (70) and the thread tube conveying means (80>) and are connected to the guide rail (
60A) (60B) to roller (104A) (104
B) are supported and guided respectively. Moreover, it is preferable to use synchronous motors applied to automatic control for each of the above-mentioned motors (51) (73) (89) (101), and these motors (51) (73) (89) (1
01) and the carriage (22) are automatically controlled by a computer program.
0) motor (73) and the yarn duct conveying means (80)
The motor (89) is controlled so that it can rotate 360 degrees during one operation.

[For production]

The operation of the automatic yarn supply device for an intarsia type flat knitting machine according to the present invention, which is constructed as described above, will be explained as follows with reference to the drawings. As shown in FIGS. 3 and 4 (A) and (B), first, each yarn released from the cone (Cone) is passed through a tension adjustment device (not shown), and each colored yarn (Y) is passed through a tension adjustment device (not shown).
is inserted into each of the yarn guide tubes (40) and the flat knitting machine is operated, the yarn guide tube extracting means (70) and the yarn guide tube conveying means (80)
and are moved by the yarn duct transport drive means (100) to the position of the yarn duct (40A) corresponding to the required colored yarn.

That is, when the IftL knitting machine is operated, the motor (101) of the yarn guide tube conveying drive means (100) is rotated by a control device (not shown), and the pinions (102A) (102B) of the motor (101) are rotated. ) rotates and meshes with the pinions (102A) (102B) (103).
A) (103B) is operated to the left or right side according to the rotating direction of its motor (101), and the thread guide tube extracting means (70) and the thread connected to the racks (103A) and (103B) The vessel transporting means (80) is moved along the guide rails (60A) and (60B) to the left or right side, respectively.Then, the vessel extracting means (7
0) and the thread duct transporting means (80) reach the set position in the program of the control device, the rotation of the motor (101) is stopped, and the thread duct extracting means (70) and the thread duct transporting means The means (80>) is stopped at a fixed position. In this case, the thread guide pipe fixing device (31), which holds the corresponding thread guide pipe (4CIA) on the side of the thread guide pipe extracting means (70), and the thread guide The holder (81) of the tube conveying means (80) is located approximately on the same line.On the other hand, in the state shown in FIGS. (73) is 3
60° rotation (see Figure 2). Therefore, the motor (7
The cam plate (74) pivotally supported on the shaft of 3) is rotated, and the extraction rod (71) connected to the crank bin (75) and the connecting tool (76) is rotated as shown in Figs. 3 and 4 (A). As shown in the figure, the thread duct is pushed out from the extraction rod guide hole (32) toward the thread duct transport means (80) and is held by the thread duct fixing device (31) of the thread duct storage stand (30). (40A) is extracted from the thread duct fixing device (31) with the extraction rod (71) and the needle (21
) and the needle (21).
) into the holder (81) side. Next, the yarn guide tube (40A) was pushed through the yarn guide groove (83) formed in the holder (81), and was elastically installed on both sides of the yarn guide groove (83). A pair of Joes (8
4) while pushing out the outward inclined part (84A)
As shown in A), it is held by the inwardly inclined portion (84B) of the jaw (84>) in the thread guide groove (83).

In this state, the yarn duct transport drive means (100)
The motor (101) is controlled by a control device, and further rotates to extract the thread duct extracting means (70) and the thread duct transporting means (
80) means to start moving to the left or right. here,
The point at which the yarn guide tube conveying means (80) starts moving with the yarn guide tube (40A) held in the holder (81) is
The colored thread inserted into the thread guide tube (40A) hits the required starting point, and the thread hits the hook (21) of the needle (21).
21A) and the spatula (21B). after that,
As the yarn guide tube conveying means (80) moves, the yarn inserted into the yarn guide tube (40A) is gradually hooked from the needle located at the starting point to other adjacent needles, and reaches the set position of the control device. It will be stopped. That is, the stopping position of the yarn duct extracting means (70) and the yarn duct transporting means (80) becomes the end point of the transfer of the yarn inserted into the yarn duct (40A).

As shown in FIGS. 3 and 4(B), the thread tube (40A) held by the holder (81) of the thread tube transporting means (80) is removed from the thread tube extracting means ( 86), passes between the needles (21) and the needles (21), moves to the thread guide tube storage table (30), and is held by the thread guide tube fixing device (31) that is waiting.At this time, The operation of the thread duct extracting means (86) is performed in the same manner as the thread duct extracting means (70) described above, and the cam plate (90) is rotated 360° by the motor (89), and the crank pin is rotated by 360 degrees. (9
1) and the connector (92) actuate the extraction rod (87) to extract the thread duct (40A).

In such a state, when extracting the yarn guide tube (40〉) into which other colored yarns have been inserted to form a predetermined pattern, the yarn guide tube storage table (30〉) is transferred by a computer program and the corresponding yarn is removed. The duct is positioned between the needles (21) through which the previous duct passed, and at the same time, the duct extracting means (70) and the duct transporting means (80) are moved to the left. The thread guide tube (40) is moved to the right and positioned on the same line as the thread guide tube (40).Then, the thread guide tube (40) is separated from the needle (21) and the needle (21) by the action of the thread guide tube extracting means (70). ), the thread inserted into the thread pipe (40) is passed through the thread pipe transport means (holder 81) of the thread pipe transport means (80>), and the thread inserted into the thread pipe (40) is hung in place of the previous thread. (
80), the yarn is moved by a predetermined stitch and the next needle (21) is threaded. Therefore, the starting and ending points of each thread forming the pattern are located on adjacent needles (
21) Since each step (21) is performed, the boundary area between the ground and the pattern is clearly expressed without being overshadowed, and the coloring of the pattern is clearly expressed.

In this way, when the action of hanging each necessary colored thread (Y) on the needle at the required position is completed, the needle bed (2
0) While the carriage (22) installed above is moved to the left or right side, the needle (21) is moved by the action of the inner cam (not shown) and the pad (21C) of the needle (21). ) is raised and lowered once on the needle bed (20) to perform the first knitting. Here, if the coloring of the ground and pattern of the previous knitting is the same,
The second knitting is performed while being transported in the opposite direction to the transport direction of the yarn guide tube (40A) during the first knitting described above, and the third knitting is performed in the same direction as the first knitting. In addition, if the coloring of the ground and pattern is different from the previous knitting, the yarn guide tube into which a different colored thread has been inserted is hooked onto the needle (21) at a different position and knitted. In the process of transporting and holding the aforementioned thread guide tube (40), the thread guide tube storage stand (30) is equipped with a thread guide tube extracting means (70) and a thread guide tube transporting means (80), respectively. The pipe (40) is moved to the left and right so that it is accurately positioned on the fixture (31) holding the pipe (40).

〔Effect of the invention〕

As explained above, in the intarsia type flat knitting machine according to the present invention, the number of installed yarn guide tubes into which colored yarns for knitting patterns are inserted is limited (for example, within 10) as in the past. Since a sufficient number of knitted fabrics can be installed (for example, more than 50 pieces) in the required number without having to use the knitted fabrics having various colors and patterns.

In addition, the direction of movement of the thread guide tube into which colored threads are inserted is not limited to reciprocating movement in the left and right directions as in the past, but can be freely moved in four directions: left, right, front, and back. Because of this, the area between the pattern and the fabric is clearly demarcated, without the double border between the knitted fabric and the pattern, which is the case with conventional knitting.
This has the effect of obtaining a high-quality knitted fabric with extremely improved pattern clarity.

[Brief explanation of the drawing]

Fig. 1 is a partial front view showing an intarsia type flat knitting machine to which an automatic yarn supply device according to the present invention is applied, and Fig. 2 is a partial front view showing an intarsia type flat knitting machine to which an automatic yarn supply device according to the present invention is applied. A partial plan view showing a knitting machine, FIG. 3 is a sectional view taken along the line ■-■ of FIG. 2, and FIG.
Fig. 4 (A) is a partial plan view showing the operation of the automatic yarn feeding device of method a), and Fig. 4 (A>) shows the state in which the yarn guide tube is extracted from the yarn guide tube storage stand to the yarn guide tube conveying means side. Plan view, Figure 4 (B)
is a plan view showing a state in which the thread tube is extracted from the thread tube transporting means to the yarn tube storage stand side; in the figure, 101...motor 102A, 102B
... Pinion, 103A, 103B... Rack, 60A, 60B... Guide rail, 70... Yarn guide tube extracting means, 80... Thread guide tube conveying means. Figure 3 Figure 4 (A) 8451115 Procedural amendment writing method) % formula % Display of the case Hei rIi, 2nd year patent application No. 222654 Name of the invention Case of a person who corrects the automatic yarn feeding device of an intarsia type flat knitting machine Relationship with Patent applicant name Jun Lee Kwan (one other person) 4. Agent address 6-8-10-chome, Toranomon, Minato-ku, Tokyo 105, Subject of amendment (1) Power of attorney (2) Specification 7. Contents of the amendment (1) As per the attached sheet (2) Engraving of the specification (no change in content) 8, list of attached documents (1) Power of attorney (2) Engraving of the specification in two copies (one copy)

Claims (13)

[Claims] (1) A device that supplies yarn to the needles by being raised and lowered by a carriage that moves back and forth on the needle bed of the machine, and includes a number of yarn guide tubes into which the yarn is inserted, and the yarn guide tubes are held between the yarn guide tubes. A thread guide tube fixing device, a thread guide tube storage stand on which the thread guide tube fixer is fixed, a yarn guide tube storage stand reciprocating drive means for reciprocating the yarn guide tube storage stand in the transverse direction, and the yarn guide tube storage stand A thread pipe extracting means for extracting the thread pipe held in the pipe storage stand to a thread pipe transporting position, and a thread pipe transporting means for holding and transporting the thread pipe extracted from the thread pipe storage stand. An automatic yarn supplying device for an intarsia type flat knitting machine, comprising: a yarn guide tube extracting means and a yarn guide tube transporting means for reciprocating the yarn guide tube conveying means in the transverse direction. (2) The thread guide tube fixing device is formed of a plurality of pairs of elastic pieces and is fixedly installed on the thread guide tube storage stand;
The intarsia according to claim 1, wherein a plurality of extraction rod guide holes are formed between each of the thread pipe fixing devices of the thread pipe storage stand to which the thread pipe fixing devices are fixedly installed. Automatic yarn feeding device for flat knitting machines. (3) The intarsia type flat knitting machine according to claim 1, wherein the yarn guide tube has a substantially cylindrical shape, and the lower end of the yarn guide tube is gradually bent in a forward direction so as to have a substantially conical shape. automatic thread feeding device. (4) The thread guide tube storage stand reciprocating drive means includes a motor fixedly installed on the machine side, a pinion pivotally supported on the shaft of the motor, and a motor that meshes with the pinion to drive the thread guide tube storage stand. 2. The automatic yarn feeding device for an intarsia type flat knitting machine according to claim 1, comprising a rack fixedly attached to the intarsia type flat knitting machine. (5) The thread duct extracting means includes an extraction rod for extracting the thread duct clamped by the thread duct fixing device to a transport position, and an extraction rod driving means for reciprocating the extraction rod in forward and backward directions. An automatic yarn feeding device for an intarsia type flat knitting machine according to claim (1). (6) The extraction rod driving means includes a cam plate rotated by a motor, and a crank pin eccentrically installed on the cam plate;
The automatic yarn feeding device for an intarsia type flat knitting machine according to claim 5, comprising a connector for connecting the crank pin and the extraction rod. (7) The extraction rod is attached to the connector and is inserted and guided into the extraction rod guide hole of the thread tube storage stand.
5) The automatic yarn feeding device of the intarsia type flat knitting machine described above. (8) The thread guide tube transporting means includes a thread guide tube holder that clamps the thread guide tube extracted from the thread guide tube fixing device of the yarn guide tube storage stand, and a thread guide held by the thread guide tube holder. 2. The automatic yarn feeding device for an intarsia type flat knitting machine according to claim 1, further comprising a yarn guide tube extracting means for extracting the tube to the yarn guide tube storage table side. (9) The yarn guide tube holder includes a holder body, a substantially U-shaped yarn guide groove formed in the holder body, and a pair of jaws formed on both sides of the yarn guide groove. , and an elastic member for bringing the pair of jaws into close contact with each other. The automatic yarn feeding device for an intarsia type flat knitting machine according to claim 8. (10) The thread pipe extracting means includes an extraction rod for extracting the thread pipe held by the thread pipe holder to the thread pipe storage table side, and an extraction rod for reciprocating the extraction rod in forward and backward directions. 9. The automatic yarn feeding device for an intarsia type flat knitting machine according to claim 8, comprising a rod driving means. (11) The extraction rod driving means is constituted by a cam plate rotated by a motor, a crank pin eccentrically fixed to the cam plate, and a connector connecting the crank pin and the extraction rod. (10) The automatic yarn feeding device for the intarsia type flat knitting machine described in (10). (12) The yarn guide tube transporting drive means includes a motor (101
) A pair of pinions (102A) (102
B) and each rack (103A) (
103B) The automatic yarn feeding device for an intarsia type flat knitting machine according to claim (1). (13) The motor (101) is installed on guide rails (60A) (60B) fixed to the machine base, and the rack (
103A) and (103B) are respectively thread duct extraction means (70).
and a thread pipe conveying means (80).
12) The automatic yarn feeding device of the intarsia type flat knitting machine described above.