JPH01201556A - Yarn exchange process in knitting machine and apparatus therefor - Google Patents

Abstract

PURPOSE:To enable the exchange of feed yarn in each stage in either forward or backward motion of a carriage and to enable the knitting of a patterned fabric having multiple colors, by arranging feed yarn exchange apparatus at the right and the left ends of a needle bed. CONSTITUTION:Feed yarn exchange apparatuses 15 arranged at the right and the left ends of a needle bed are provided with plural yarn feeding members 61(61a, 61b) at the right and the left in parallel and with a change-over cam 60 to displace the yarn feeding member 61 between a retreating position for hooking the knitting yarn and a yarn feeding position to feed the yarn after releasing the hooking. In each sliding motion of the carriage, the change-over cam 60 is rotated in a prescribed direction by a prescribed angle to displace a plurality of yarn feeding members 61 to a yarn feeding position according to the arranged order and to retreat the other yarn feeding members 61 to a retreating position.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a yarn changing method and apparatus for a knitting machine, particularly a hand knitting machine.

B. Prior art and its problems" In the conventional yarn exchange device, as disclosed in Japanese Patent Publication No. 5B-57532, etc., the yarn feeding exchange device is located at one end (usually the left end) of the main knitting machine body. Just by wearing it,
When knitting a pattern while exchanging multiple knitting yarns using a yarn feeding exchange device, the yarn feeding is exchanged every two rows, that is, when the carriage reaches either the left or right end, the yarn is exchanged every round trip. there were. Therefore, yarn feeding exchange knitting cannot be performed for each stage, resulting in extremely low efficiency.

In addition, in such two-row knitting, it takes a lot of time to input the pattern knitting, and for example, if the pattern is input using a so-called punch card that expresses the pattern by the presence or absence of perforations, two rows become one pattern. As shown in FIG. Therefore, in some cases, the cam was moved forward to knit a pattern, change the knitting yarn at the turn, and then switch the cam to a sliding direction in which no pattern knitting was performed during the backward movement. It was necessary to perform a cumbersome cam switching operation every time the cam was moved backwards.

Therefore, the present invention enables yarn feeding to be exchanged both when the carriage moves forward and backward, that is, at each stage, and allows multicolor pattern knitting to be carried out efficiently, as well as to prevent multiple knitting yarns from intertwining with each other. This is intended to allow the thread to be replaced smoothly without any problems.

[Means for Solving the Problems] In the yarn changing method of the present invention, yarn feeding and changing devices are arranged at the left and right ends of the needle bed. Each yarn feeding exchange device is equipped with a plurality of yarn feeding bodies arranged in parallel on the left and right, and these yarn feeding bodies are moved from a retracted position where knitting yarn can be hooked to a yarn feeding position where the yarn can be released. Each is provided with a switching cam that is sequentially displaced. Each time the main and sub-carriages slide to the left yarn feeding and changing device, the switching cam of the yarn feeding and changing device is rotated by a predetermined amount by a predetermined amount by the sliding force of the main and sub-carriages. The plurality of yarn feeding bodies of the left yarn feeding and changing device are sequentially displaced to the yarn feeding position according to the arrangement order, and the yarn feeding body that was at the yarn feeding position is retreated to the retracted position. In addition, each time the main/sub carriage slides to the right yarn feeding/changing device, the switching cam of the yarn feeding/changing device is rotated by a predetermined amount by the sliding force of the main/sub carriage in a predetermined direction. The plurality of yarn supply bodies of the yarn exchange device are sequentially displaced to the yarn supply position in an order opposite to that of the yarn supply exchange device on the left side, and the yarn supply body that was at the yarn supply position is retreated to the retracted position.

The yarn changing device of the present invention has left and right yarn feeding and changing devices equipped with a plurality of yarn feeding bodies and switching cams as described above, and a yarn changing device that is provided with a plurality of yarn feeding bodies and a switching cam. When the carriage is slid, the switching cam is engaged with one of a pair of actuating pieces provided on the carriage to rotate the switching cam by a predetermined amount, thereby retracting the yarn feeding body from the yarn feeding position to the retracted position and at the same time A first passive lever that displaces a yarn feeder in a certain rank to a yarn feeding position, and a first passive lever that engages with the other activation piece when the main and sub carriages turn back and slide to further rotate the switching cam by a predetermined amount to feed yarn. A second passive lever that moves the yarn feeder of the relevant rank that has been displaced to the retracted position to the retracted position and displaces one yarn feeder of the next rank in the retracted position to the yarn supply position, respectively, is rotatable. It was installed on.

"Function" According to the method of the present invention, each time the main and sub-carriages are slid to the left yarn feeding and changing device, the plurality of yarn feeding bodies in the yarn feeding and changing device are adjusted according to their arrangement order, that is, the left yarn feeding and changing device. At the same time, the yarn supplying body that was at the yarn feeding position is retreated to the retracted position, and the plurality of yarn supplying bodies are moved in a single tilt direction from left to right. The knitting yarn is sequentially transferred to and from the yarn feeder of the arm. Also, each time you slide the main and sub carriages to the yarn feeding and changing device on the right side,
In the yarn feeding and changing device, the plurality of yarn feeding bodies are automatically displaced to the yarn feeding position sequentially in the order opposite to that described in -F, that is, from right to left, and are at the yarn feeding position. The yarn feeder is retreated to the retracted position, and the plurality of yarn feeders exchange knitting yarns with the yarn feeder of the arm in order from right to left.

Therefore, a plurality of knitting yarns that are suspended side by side on the tension device are exchanged in order from left to right in the yarn supply and exchange device on the left, and vice versa in the yarn supply and exchange device on the right. The threads are exchanged from right to left, so they do not intertwine with each other. In either the left or right yarn feeding exchange device, the above-mentioned alternating operation of the plurality of yarn feeding bodies is automatically performed by rotating the switching cam as the main and sub carriages slide.

According to the device of the present invention, when the main and sub-carriages are slid to the left or right yarn feeding and changing device, the first passive lever of the yarn feeding and changing device rotates, and the first passive lever of the yarn feeding and changing device is rotated to ensure that the yarn feeding and changing device is at the yarn feeding position. The yarn feeder retreats to the retracted position, and the knitting yarn that had been fed to the yarn feeder of the arm until then is hooked to the yarn feeder, while the yarn feeder in the corresponding order moves back from the retracted position to the yarn feeding position. The knitting yarn that was hooked thereon is instead fed to the yarn feeder. After that, when the main and sub-carriages are turned back and slid, the second passive lever rotates, and the yarn feeder of the concerned rank, which has finished feeding yarn to the yarn feeder as described above, retreats to the retracted position, and the next The yarn feeder in the ranking position is moved from the retracted position to the yarn feeding position for the next exchange.

"Example" Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

In FIG. 1, the main knitting machine main body 1 and the subtitle machine main body 2 are supported at a required angle on a knitting machine stand 3, which is slightly longer than the main knitting machine main body 1, with the main knitting machine main body 1 at the rear and the subtitle machine main body 2 at the front. These main and subtitle machine bodies l.

A main carriage 6 and a sub-carriage 7 are respectively mounted on the needle beds 4.5 of No. 2 so as to be movable left and right. A rear arm 8 is installed on the main carriage G, and a front arm 9 is installed on the secondary carriage 7, and the main and secondary carriages 6.7 are connected to the left and right connecting members 10.11, which will be described later. By being connected like this, they can slide at the same time. These arms 8
．． On top of 9 is a return activation piece 12 which is an L-shaped plate. Front activation piece 13
are each screwed vertically. A left yarn feed exchange device 14 and a right yarn feed exchange device 15 are installed horizontally on the left end of the knitting machine table 3 and on the right end thereof, respectively, so as to be detachably attached to each other by mounting bases 16.

As shown in FIG. 2, the rear arm 8 is removably attached to the main carriage 6 by a fastener 17, and the front arm 9 is detachably attached to the sub-carriage 7 by a fastener 18.

As shown in FIG. 3, horizontal decks 8a are extended and provided at both left and right ends of the rear arm 8, and the left and right connecting members 10 are provided with horizontal decks 8a.
．． 11 is mounted on these decks 8a with the same structure on the left and right sides so as to be slidable back and forth as follows.

In other words, the connection member 11 on the right side will now be explained as shown in FIGS. 3 and 4 (cross-sectional view taken along the line 1-i in FIG. 3).
As shown in the figure, it is a hollow body with an inverted U-shaped cross section that is long from front to back, and its hollow part is slidably fitted with the front and rear guide rollers 19 that are pivotally supported on the upper surface of the deck 8a, and is fixed to the hollow part. The connected stand 20 is connected to the guide groove 8 provided in the deck 8d.
b, and the connecting member 11 connects these guide rollers 1.
9 and the guide groove 8b. A U-shaped fitting recess 11a is provided at the tip (front end) of the connecting member 11. A torsion spring 22 is wound around a mounting stud 21 protruding from the lower surface of the deck 8a, and a passive member 23 having a roughly L-shaped plane is pivotally supported for horizontal rotation. One end of the torsion spring 22 is in pressure contact with the connecting stud 20, and the other end of the spring receiver of the passive member 23 is in pressure contact with the pin 24.
As a result, the connecting member 11 is urged forward (toward the front arm 9 side), and the passive member 23 is also urged in a certain rotational direction, thereby pressing the rear arm portion 23a against the connecting stud 20. A protrusion 25 is provided at the free end of the lower surface of the arm portion 23b on the front side of the passive member 23. Left side connecting member l
Also for O, a torsion spring 22 and a passive member 23 are mounted on the lower surface of the left deck 8a symmetrically to the right side. A U-shaped fitting recess 10.1, lla is provided at the tip (front end) of the connecting member 10.11.

On the other hand, on the front arm 9 side, left and right connectors 27 corresponding to the left and right connecting members 10 and 11, respectively, are screwed onto the left and right ends of an oblong plate 26 fixed to the upper surface thereof. Connector 2
7 has an eccentric cam portion 27b on the lower side of the head 27a which is rotated by a driver, and a connecting member 10.11 which is biased by the torsion spring 22 as described above is attached to the eccentric cam portion 27b. Fitting recess 10a, lla
are removably fitted, and the rear arm 8 and front arm 9 are connected. The distance between the rear arm 8 and the front arm 9 in the connected state can be determined by turning the connector 27 for each of the left and right connecting members io, tt, and adjusting the eccentric cam portion 27b of the left and right connecting members io, tt.
It can be adjusted by changing the direction.

A rear yarn feeder body 28 is attached to the center of the front edge of the rear arm 8, and a front yarn feeder body 29 is attached to the center of the rear edge of the front arm 9. As a result of the combination, a yarn feeding port 30 is formed in the center between them, and left and right knitting yarn guide passages 31.
32 is formed. The above left and right connecting members 10.11
When engaged with the corresponding connector 27, it traverses the left and right knitting yarn guide passages 31 and 32, respectively, and closes them.

The rear yarn feeder body 28 has a substantially horizontal attachment part 33, a downwardly inclined inclined part 34, and a C-shaped recess 3 at the center of the lower end.
5, a substantially vertical protrusion 37 extending obliquely upward and leftward from the front end of the inclined part 34 and forming a thin yarn path 36 between it and the front edge of the inclined part 34; It has a guide arm portion 38 that projects rearward with an inclination in the -L direction, and a guide protrusion 39 on the opposite side. The front yarn feeder body 29 has a shape symmetrical to the rear yarn feeder body 28 in each part, and the four C-shaped portions 35 of both meet to form the yarn feeder 30.

In the left and right yarn feeding exchange units W14.15, horizontally elongated switching actuating members 40 that can respectively engage with the protrusions 25 of the left and right passive members 23 are provided to protrude horizontally inward from each other. .

Therefore, in FIG. 3, when the main and sub carriages 6.7 slide to the left and the protrusion 25 of the left passive member 23 engages the tip of the left switching activation member 40, the left passive member 2
3 rotates counterclockwise from the position shown by the dashed line in the same figure to the position shown by the dashed line, and the arm 23a on the rear side pushes the connection stud 20 backward, and the left side connection member 10 is pressed against the torsion spring 22. It is slid backward from the position shown by the one-dot chain line to the position shown by the solid line, and is disengaged from the left connector 27 to open the left knitting yarn guide passage 31. By opening this, the left yarn feeder exchange device 14 is connected to the left yarn feeder passage 31 and the yarn path 36 of the rear yarn feeder body 28.
It becomes possible to exchange the knitting yarn M with the yarn feeder 30 via the yarn path on the right side in the figure. The knitting yarn suspended in the left yarn feeding and changing device 14 as described later passes through the open knitting yarn guide passage 31, and as the main and sub-carriages 6.7 reversely slide, The yarn is fed to the yarn feeder 30 along an arrow path 41 shown by arrow 41 while being guided by the protruding portion 37° of the rear yarn feeder body 28, the guide arm portion 38, and the guide portion 39 of the front yarn feeder body 29.

During this time, the rear arm 8 and the front arm 9 are connected to the right side connecting member 1.
1 maintains the connected state. Main/secondary carriage 6.
7, the protrusion 25 of the left passive member 23
When the left side passive member 23 is released from the left switching activation member 40, the left side passive member 23 rotates back due to the action of the torsion spring 22, and the left side connecting member 10 returns forward due to the action of the torsion spring 22, and its fitting recess is 10a is refitted with the left connector 27.

On the other hand, when the main/sub carriage 6.7 is slid to the right, the protrusion 25 of the right passive member 23 engages with the tip of the right switching activation member 40, and the passive member 23 is moved clockwise. The connecting member 11 on the right side is moved backward 18, and the knitting yarn guide passage 32 on the right side is opened. Therefore, the right yarn feed exchange device 15 connects the knitting yarn M with the yarn feeder 30 via the right knitting yarn outlet passage 32 and the yarn path 36 of the front yarn feeder body 29 (the left yarn path in the figure). It becomes possible to exchange the
Knitting yarn M hung in the yarn feeding and changing device 15 on the right side
passes through the open knitting yarn guide path 32 and follows the arrow path 42 shown by the chain line in the figure as the main and sub carriages 6.7 reversely slide.
The protruding portion 37 of the front yarn feeder body 29. The yarn feeder 3 is guided by the guide arm 38 and the guide portion 39 of the rear yarn feeder body 28.
Yarn is fed to 0.

During this time, the rear arm 8 and the front arm 9 are connected to the left connecting member 1.
1 maintains the connected state. Main/secondary carriage 6.
7, the protrusion 25 of the right passive member 23
When the right side passive member 23 is released from the right switching activation member 40, the right side passive member 23 rotates back and the right side connecting member 11
returns forward and its fitting recess 11a is connected to the right connector 27.
and remate.

Next, although the left and right yarn feeding and changing devices 14 and 15 are oriented symmetrically to each other, they have substantially the same structure, and the structure of the yarn feeding and changing device 15 on the right side is shown in FIG. 5 (plan view) and FIG. Figure 6 (bottom view), Figure 7 (partially cutaway front view), Figure 8 (
The explanation will be given with reference to FIG. 9 and FIG.

The entire yarn feeding and changing device 15 is mounted on a frame 43 separate from the main and subtitle machine bodies 1.2. The left front corner of the frame 43 is cut out to form a yarn feeding exchange section 44. On the top surface of the frame 43, this yarn feeding exchange section 44 is provided.
A knitting yarn guiding rod 45 extending across the is screwed, and a first passive lever 45 and a second passive lever 46
are horizontally rotatably supported on a common wheel shaft 48 with the former facing forward and the latter facing rearward. Further, on the lower surface of the frame 43, a feed lever 49 is also horizontally rotatably supported on a wheel shaft 48, and a disk-shaped feed wheel 50 is fixed to the wheel shaft 48.

Both passive levers 46 and 47 are plate-shaped and are stacked one on top of the other with the former at the bottom and the latter at the top, but they can be rotated individually. 1st
The passive lever 46 has the front actuating piece 13 on its -length measuring edge.
The second passive lever 47 has an abutment portion 47a that can be engaged with the rear actuation piece 12 on its length-measured edge. There is. The second passive lever 47 has a small spring hook protrusion 47a hanging from the periphery of its central part, and the first passive lever 46 also has a spring hook with the same shape as the protrusion 47b, and the spring hooks that overlap with it in the front and back are protrusions. It has a section 46b. These spring hooks are the protrusions 4
7b and 46b, one side of the 1-John spring 51 wound around the wheel shaft 48 is hung, so
Both passive levers 46 and 47 are biased counterclockwise in FIG. 5 by this spring 51. Further, the second passive lever 47 has a push vj convex portion 47c at the other end.
The first passive lever 46 also has this pushing protrusion 47c.
It has a pushing convex portion 46c having the same shape. In FIG. 5, these pushing convex portions 47c and 46c are vertically overlapped.

The feed lever 49 is biased clockwise in FIG. 5 by a tension spring 52 hooked to one end (rear end) thereof. A frame 43 is attached to the other end (front end) of the feed lever 49.
A pin 54 is installed that protrudes upward from an arc-shaped elongated hole 53 provided in the hole 53, and the pin 54 is connected to the pushing protrusion of both passive levers 46 and 47 attached in the counterclockwise direction as described above. It is in pressure contact with the portions 46c and 47c. Therefore, both driven levers 46, 47 and the feed lever 49 restrict their rotation to each other. A feed pawl 55 that rotates around this pin 54 is pivotally attached to the other end (front end) of the feed lever 49 . The feed claw 55 is connected to the elongated hole 5.
The spring hook 3 protruding upward has a protrusion 55a, and the other side of the torsion spring 51 is hooked to the protrusion 55a. It is biased so as to come into pressure contact with the periphery of the feed wheel 50. A plurality of four portions 50a are provided on the periphery of the feed wheel 50 with a constant phase difference and engage with the tip of the feed pawl 55.

On the other hand, Hurray! - A reversal prevention pawl 57 is pivotally attached to a mounting base 56 attached to the vertical front wall 43a of 43 so as to be rotatable about a shaft 58. This reversal prevention pawl 57 is connected to the concave portion 50a of the feed wheel 50 by the torsion spring 59.
The leading end of the feed wheel 50 is pushed toward the concave portion 50 of the feed wheel 50.
It engages with a to prevent its reversal.

Normally, as shown in FIG. 8, the reverse prevention pawl 57 and the feed pawl 55 are engaged with the same recess 50a of the feed wheel 50, and both driven levers 46, 47 and the feed lever 49 are held in the state shown in FIG. There is. At this time, the first passive lever 46 is tilted to the left about the wheel shaft 48, while the second passive lever 47 is tilted to the right.

In this state, when the main/sub carriage 6.7 is moved to the right to the right end of the needle beds 4, 5 as shown in FIG. The first driven lever 46 collides with the abutting portion 46a of the first driven lever 46, which is tilted toward the opposite side, and the first driven lever 46 is rotated counterclockwise from the solid line position to the chain line position in the figure against the torsion spring 51. When this rotates, the pin 54 is pushed by the pushing convex portion 46c, so that the feed lever 49 is rotated counterclockwise against the tension spring 52.

After the front activation piece 13 collides with the first driven lever 46, the rear activation piece 12 collides with the abutting portion 47a of the second driven lever 47, but at this time the pin 54 has already been pushed by the first driven lever 46. Therefore, the second passive lever 47 is only rotated clockwise by the rear activation piece 12 and does not act on the feed lever 49.

As described above, the feed lever 4 is moved by the first passive lever 46.
9 is rotated, the feed pawl 55 attached thereto moves together with the feed lever 49 from the solid line position in FIG. 8 (bottom view) while engaging with one recess 50a of the feed wheel 50. (clockwise in the figure), and the feed wheel 50 is rotated together with the feed lever 49 (clockwise in the figure). At this time, the anti-reverse claw 57 is forcibly removed from the recess 50a of the feed wheel 50. As the feed wheel 50 rotates, the angle of the feed pawl 55 with respect to its periphery gradually decreases, and since the feed lever 49 is biased in the opposite direction to the direction of rotation by the first passive lever 46, the feed wheel 50 When the feed pawl 55 has been rotated by a certain amount, it is removed from the recess 50a. Therefore,
The feed wheel rotates 500 times by a certain amount, and the feed pawl 5
5 is removed from the recess 50a, the feed lever 49 is rotated back by the action of the tension spring 52, and accordingly, the feed pawl 55 returns while sliding on the periphery of the feed wheel 50 and engages with the next recess 50a. Further, the reversal prevention claw 57 also engages with the cough recess 50a. When the front activation piece 13 and the rear activation piece 12 are removed from the first and second driven levers 46 and 47, these and the feed lever 49 are again held in the state shown in FIG. 5.

After this, when the main and sub carriages 6.7 are turned back and moved to the left, the abutting portion 47a of the second driven lever 47 is moved ahead of the first driven lever 46, as shown in FIG. The pin 54 is pushed by the second passive lever ear, and the feed lever 49 is rotated. At this time as well, the feed wheel 50 is rotated by a certain amount in the same direction as in the case described above.

When the feed wheel 50 rotates, the wheel shaft 48 to which it is fixed also rotates together with it.

As shown in FIG. 7, a plurality of switching cams 60 (five in the example shown) are fixed to the wheel shaft 50 in a manner that overlaps each other below the feed wheel 50, and the feed wheel 50 rotates. These will then rotate at the same time.

On the other hand, as shown in FIGS. 5 to 7, on the frame 43, five yarn feeding bodies 61 corresponding to these five switching cams 60 in a one-to-one relationship are rotatable around a common shaft 62. It is supported by a step. These five yarn feeders 61 are made of relatively thick wire, and each has a tip end 61a of about 90 degrees.
It is bent at 0 degrees, and a hook 61b for hanging the knitting yarn is provided at the tip, but the lengths from the base end to the tip 61a are different, and the hooks in the upper row are gradually longer than those in the lower row. It has become. The tip portions 6 of these five yarn feeders 61
1a are arranged in parallel on the left and right and protrude from the slits 43c of the hanging wall 43b of the frame 43 into the yarn feeding exchange recess 44.

Each yarn feeder 61 is biased toward the corresponding switching cam 60 by a tension spring 63.

The switching cam 60 has a pair of arcuate engaging portions facing each other and projecting in the axial direction from the periphery of a disk 60b, each having an R60a, as shown in FIGS. 9(A), 9(C), and 9(D). 60c and a pair of notches 60d are formed between these engaging parts 60c, or a ring-shaped retaining part 61e is provided projecting around the entire circumference as shown in FIG. The stems of the five yarn feeders 61 are pressed against the engaging portions 61C or 61e of the corresponding switching cams 60 by the tension springs 63. In addition, Fig. 9 (A), (B), (C)
, (D) are the nn line, mm line, and IV-IV line in FIG. 7, respectively.

This is a cross section taken along the line V-V.

Therefore, the switching cam 6 having a pair of arcuate retaining portions 60c
0 and the corresponding yarn feeder 61, the switching cam 6
When the stem of the yarn supplying body 61 falls into the notch 60d of 0, the tip end 61a of the yarn supplying body 61 touches the frame 4.
3) and moves forward to a position intersecting the knitting yarn guiding rod 45 within the yarn feeding exchange section 44, that is, to a yarn feeding position. Further, when the switching cam 60 rotates from this state and the stem of the yarn supplying body 60 is pushed by the arcuate engaging portion 60c against the tension spring 63, the tip portion 61a of the yarn supplying body 61 is inserted into the slit 43c. The hook 61b is further retracted to a retracted position in which only the hook 61b is protruded.

On the other hand, the switching cam 6 having the ring-shaped retaining portion 60e
0 and the corresponding yarn feeder 61, the switching cam 6
0 rotates, the yarn feeder 61 does not move and is always held at the retracted position.

In this example, in order to replace three knitting yarns, among the five yarn supplying bodies 61, the first and third stages from the bottom.

The 5th row (1st, 3rd, and 5th from the right in terms of the arrangement of the tip 61a) are used, and the 2nd and 4th row are used.
Do not use the second row. Therefore, five switching cams 60
are the first and third rows from the bottom.

Figures 9 (A) and (C) are for the three sheets in the fifth row.

As shown in (D), it has an arc-shaped engaging portion 60c, and the second and fourth stages have ring-shaped retaining portions 60c as shown in (B).
0d. Then, the three switching forces 1160 having the arcuate engagement portions 60c are superimposed with the phases of the arcuate engagement portions 60c being different by a predetermined angle, and one of the switching cams 60 corresponds to When the yarn supplying body 61 is advanced to the yarn feeding position, the other two yarn supplying bodies 61 corresponding to the yarn supplying bodies 61 are retreated to the retracted position.

As described above, when the first passive lever 46 or the second passive lever 47 is rotated as the main and sub carriages 6.7 slide, and the feed wheel 50 is rotated by a certain amount, the five switching cams 60 Since the yarn feeders 61 are also rotated together with this, the three yarn feeding bodies 61 corresponding to the three switching cams 50 having the arcuate retaining portions 60c are sequentially advanced one by one to the yarn feeding position.

The yarn feeding and changing device 15 on the right side is configured as described above. On the other hand, the yarn feeding exchange device Tl14 on the left side is structurally the same as the yarn feeding changing device 15 on the right side, but the overall direction is reversed from the front and back and left and right, and the yarn feeding recess 44
is formed at the rear corner of the right end of the frame 43, the hooks 61b of the five yarn feeders 61 are directed toward the rear inside the yarn feed exchange recess 44, and the first passive lever 46 is , a second passive lever 47 is disposed on the front side, and the first passive lever 46 engages with the rear activation piece 12, and the second passive lever 47 engages with the front activation piece 13, respectively. In the yarn feeding and changing device 15 on the right side, the first, third, and fifth yarn feeding bodies from the right of the five yarn feeding bodies 60 are selected as described above.
While the threads are sequentially advanced to the yarn feeding position in this order,
In the left yarn feeding exchange device ff114, the first, third, and fifth yarn feeding bodies 60 from the left of the five yarn feeding bodies 60 advance in this order to the yarn feeding position (rearward with respect to the needle bed 4). displacement)
and the order is reversed from the right side.

Therefore, as shown in FIG. 1, a conventionally known tension device 64 is installed at the center of the rear side of the needle bed 4, and three knitting yarns M+, Mz, and My of different colors are arranged side by side in the yarn m section 65. The operation will be described in the case where the yarns are suspended and the yarns are exchanged by the left and right yarn supply and exchange devices 14 and 15.

In the following description, for convenience, three knitting yarns M, , M, are arranged in parallel by the tension device 65.

M from left to right, "1st m yarn", "2nd knitting yarn"
These three yarn feeders 61, which are referred to as "third knitting yarn" and are actually used in the left yarn feeder exchange device 14, are similarly referred to as "left first yarn feeder" from the left to the right. , "Left second yarn feeder"
, referred to as the "left third yarn feeder", and the right yarn feeder and exchange device 1
5, the three yarn feeders 61 actually used are moved from the left to the right in the same manner, although the order of operation is reversed.
``Yam supply body,'' ``Right second yarn supply body,'' and ``Right third yarn supply body.''

Now, as shown in FIG.
The yarn is fed as it is to the yarn feeder 30 from the 1st) J2 yarn M
2 comes into contact with the lower side of the left knitting yarn guiding rod 45 and is hooked to the hook 61b of the left first yarn supplying body, and the third knitting yarn M is connected to the hook 61b of the left first yarn supplying body.

is in contact with the upper side of the right knitting yarn guiding rod 45 and is hooked to the hook 61b of the third right yarn supplying body. At this time, in the left yarn feeding and changing device 14, only the left third yarn feeding body is at the yarn feeding position, and in the right yarn feeding and changing device 15, only the right second yarn feeding body is at the yarn feeding position.

From this state, when the main and sub carriages 6.7 slide to the right and the right passive member 23 engages with the right switching activation member 40, the right connecting member 11 retreats as described above and the right side The knitting yarn guide passage 32 is opened, and the second knitting yarn M2 passes through the knitting yarn guide passage 32 and comes into contact with the upper two knitting yarn guide rods 45 on the right side while being fed to the yarn feeder 30. In addition, the main
When the sub carriage 6.7 slides to the right and the front activation piece 13 rotates the first passive lever 46 of the yarn feeding and changing device 15 on the right side, the five switching cams 60 simultaneously rotate by a predetermined amount. However, at the same time as the right second yarn supply body is retreated from the yarn supply position to the retracted position, the right third yarn supply body is advanced from the retraction position to the yarn supply position. As a result, the second knitting yarn Mz is hooked to the hook 61b of the right second yarn supplier, while the third knitting yarn M is detached from the hook 61b of the right third yarn supplier and is attached to the right knitting yarn guiding rod 45. It takes.

When the main and sub carriages 6.7 turn back and slide to the left as shown in FIG. The switching cam 60 rotates by a predetermined amount in the same direction as described above, and at the same time, the third right yarn feeder is retracted from the yarn feeding position to the retracted position, and at the same time, the first right yarn feeder is moved to the next standby position. The third knitting yarn M is advanced from the retracted position to the yarn feeding position, and the third knitting yarn M is moved to the yarn feeding port 30.
The yarn is fed to the

When the right passive member 23 is disengaged from the right switching activation member 40, the right connecting member 11 moves forward and closes the right knitting yarn guide passage 32.

FIG. 12 shows that the first m yarn M1 is fed to the yarn feeder 30, and the second
The knitting yarn M2 is hooked to the hook 61b of the second left yarn feeder, and the third knitting yarn M is hooked to the hook of the right third lining system (not shown).

From this state, when the main and sub carriages 6.7 slide to the left and the left passive member 23 engages with the left switching activation member 40, the left connecting member lO retreats and the left knitting yarn guide The passage 31 opens, and the first &H yarn M1 passes through this knitting yarn guide passage 3.
1 and comes into contact with the lower side of the left knitting yarn guide rod 45 while being fed to the yarn feeder 30. In addition, the main/secondary carriage 6
．． 7 slides to the left and the rear activation piece 12 rotates the first passive lever 46 of the left yarn feeding and changing device 14, the five switching cams 60 simultaneously rotate by a predetermined amount, and the left first At the same time that the yarn supply body is retreated from the yarn supply position to the retracted position, the left second yarn supply body is advanced from the retraction position to the yarn supply position. As a result, the first (1) yarn M is hooked to the hook hook 1b of the left first yarn supplier as shown in FIG. 13, while the second knitting yarn M2 is detached from the hook 61b of the left second yarn supplier. , left knitting yarn guide rod 4
It takes 5.

When the main and sub carriages 6.7 turn around and slide to the right,
The second passive lever 47 of the left yarn feeding exchange device 14 is rotated by the front activation piece 13, and the five switching cams 60 are rotated by a predetermined amount in the same direction in the same manner as above, and the left second yarn feeding body is rotated. At the same time as being retreated from the yarn feeding position to the retracted position, the left third yarn feeder is advanced from the retracted position to the yarn feeding position for next standby, and the second knitting yarn M2 is fed to the yarn feeder 30. Ru. When the left passive member 23 comes off from the left switching activation member 40,
The left connecting member IO advances to the left knitting yarn guide passage 3.
Close 1.

The actual thread exchange order is as shown in Figure 12.
3, and then from FIG. 1θ to FIG. 11.

Therefore, the left and right yarn feeding exchange devices 2f14.15 transfer the three knitting yarns M+, Mz, and M3 to the tension device 64.
The yarn feeding body 14 on the left side is arranged in the same order as the arrangement order in the first left yarn feeding body, and each yarn is hooked on a fixed yarn feeding body one by one. Next, the left second yarn feeder, then the left third yarn feeder are advanced to the yarn feeding position in order, and the three knitting yarns are transferred to the first knitting yarn M7, the second knitting yarn M2, and the third knitting yarn. The yarn feeding and changing device 15 on the right transfers the three yarn feeding bodies to the third yarn feeding body on the right, the third yarn feeding body on the right,
Next, the right second yarn feeder, then the right first yarn feeder are advanced to the yarn feeding position in order, and the three knitting yarns are transferred to the third knitting yarn Ms, the second knitting yarn M2, and the first knitting yarn. Replace in the order of M. Therefore, the three knitting yarns M+, Mt, and Mx are exchanged smoothly without intertwining with each other.

In addition, in the above embodiment, three of the five switching cams 60 are substantially activated, and three of the five yarn feeders 61 are used to exchange three knitting yarns. However, four or five switching cams 60 or all five switching cams may be used to exchange four or five knitting yarns, or even more switching cams may be used to exchange more knitting yarns. You may.

"Effects of the Invention" According to the method of the present invention, thread exchange can be performed automatically in both the forward and backward movements of the carriage, that is, in each stage, so multicolor pattern knitting is much easier than in the past. Efficient (can be implemented) In addition, the yarn feeding and changing device on the left side exchanges multiple knitting yarns suspended side by side from the tension device in order from left to right, and the yarn feeding and changing device on the right side exchanges the yarns in the order going from left to right. Since the threads can be exchanged in order from right to left, the knitting threads do not get entangled with each other.
In either the left or right yarn feed exchange device, the above-mentioned alternating operation of the plurality of yarn feeders can be smoothly performed by rotating the switching cam as the main and sub carriages slide.

According to the device of the present invention, when the main and sub-carriages are slid to the left or right yarn feeding and changing device, the first passive lever of the yarn feeding and changing device rotates, and the first passive lever of the yarn feeding and changing device is rotated to ensure that the yarn feeding and changing device is at the yarn feeding position. The yarn feeder retreats to the retracted position, and the knitting yarn that had been fed to the yarn feeder of the arm until then is hooked to the yarn feeder, while the yarn feeder in the corresponding order moves back from the retracted position to the yarn feeding position. The knitting yarn that was hooked thereon is instead fed to the yarn feeder. After that, when the main and sub-carriages are turned back and slid, the second passive lever rotates, and the yarn feeder of the concerned rank, which has finished feeding yarn to the yarn feeder as described above, retreats to the retracted position, and the next The yarn feeder in the ranking position is moved from the retracted position to the yarn feeding position for the next exchange.

Therefore, thread exchange can be done efficiently and accurately.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of the entire hand knitting machine, FIG. 2 is an enlarged side view of the connecting portion of the main and sub carriages, FIG. 3 is a plan view of the same, and FIG. 4 is a sectional view taken along line 1-1 in FIG. 3; Figures 5 to 9 show the right yarn feeding and changing device, Figure 5 is a plan view thereof, Figure 6 is a bottom view, Figure 7 is a partially cutaway front view, and Figure 8 is a partial view of the device. Enlarged cutaway bottom views, Figures 9 (A), (B), (C), and (D) are taken from the nn line, mm line, IV-IV line, and V of Figure 7, respectively.
-V line sectional view. 10 to 13 are plan views illustrating the thread exchange operation. 1...Main knitting machine body, 2...Sub line machine body, 4.5...Needle bed, 6...Main carriage, 7... ... Sub-carriage, 8... Rear arm, 9... Front arm, 12... Rear starting piece, 13... Front starting piece, 14... ... Yarn feeding and changing device on the left side, 15... Yarn feeding and changing device on the right side,
30... Yarn feeder, 46... First passive lever, 47... Second passive lever, 60...
...Switching cam, 61... Yarn feeder, 64...
...Tension device. Patent applicant Silver Seiko Co., Ltd. Figure 9 (,4) Figure 9 (B)

Claims (1)

[Claims] 1. A sub-knitting machine main body is arranged in front of the main knitting machine main body, and main and sub-carriages are respectively mounted on the needle beds of the main and sub-knitting machine main bodies, and the ends of the needle beds are mounted on the main and sub-knitting machine main bodies. A yarn feed exchange device equipped with a yarn feeder that hooks the knitting yarn from the tension device is disposed in the section, and the main and sub carriages are connected via an arm provided with a yarn feeder and slid at the same time. In a knitting machine that exchanges knitting yarn between the yarn feeder and the yarn feeder when the yarn feeder is slid to the yarn feeder and the yarn feeder, the yarn feeder is moved to the left and right ends of the needle bed. Each yarn feeding exchange device is equipped with a plurality of yarn feeding bodies in parallel on the left and right, and these yarn feeding bodies can be released from the retracted position where the knitting yarn can be hooked. Each of the switching cams is provided with a switching cam that sequentially moves to the yarn feeding position, and each time the main and sub carriages slide to the yarn feeding and changing device on the left side, the switching cam of the yarn feeding and changing device is controlled by the sliding force of the main and sub carriages. The yarn feeder is rotated by a certain amount in a predetermined direction, and the plurality of yarn feeders of the left yarn feeder exchange device are sequentially displaced to the yarn feeding position according to the arrangement order, and the yarn feeder that was at the yarn feeding position is retreated to the retracted position. On the other hand, each time the main and sub carriages slide to the right yarn feed exchange device, the switching cam of the yarn feed exchange device is rotated by a certain amount in a predetermined direction by the sliding force of the main and sub carriages. Sequentially displacing the plurality of yarn feeding bodies of the yarn feeding and changing device to the yarn feeding position in an order opposite to that of the yarn feeding and changing device on the left side, and retracting the yarn feeding body that was at the yarn feeding position to the retracted position. A method for changing yarn in a knitting machine, characterized by: 2. Arrange the sub-knitting machine main body on the front side of the main knitting machine main body, and install the main and sub-carriages on the needle beds of the main and sub-knitting machine main bodies, respectively, and connect the tension device to the end of the needle bed. A yarn feed exchange device equipped with a yarn feeder for hooking the knitting yarn of In a knitting machine that exchanges knitting yarn between the yarn feeder and the yarn feeder when the yarn is slid up to the exchange device, the yarn feed exchange device is arranged at the left and right ends of the needle bed, and each feed The yarn exchange device is equipped with a plurality of yarn feeders arranged side by side on the left and right and movable between a retracted position where knitting yarn can be hooked and a yarn feed position where the yarn can be released. A switching cam that sequentially displaces the yarn body from the yarn feeding position to the retracted position and from the retracted position to the yarn feeding position is rotatably mounted, and the main and
When the sub-carriage slides toward the end of the needle bed, it engages with one of a pair of activation pieces provided on the carriage, rotates the switching cam by a predetermined amount, and retracts the yarn feeder at the yarn feeding position. a first passive lever that moves the yarn feeder of the relevant order in the retracted position to the yarn feeding position, and a first passive lever that engages with the other actuating piece when the main and sub carriages turn back and slide, and activates the switching cam. A second passive device that further rotates by a predetermined amount and moves the yarn supplying body of the relevant rank that has been displaced to the yarn feeding position back to the retracted position, and also displaces one yarn supplying body of the next rank that is in the retracted position to the yarn feeding position. A yarn changing device for a knitting machine, characterized in that a lever is rotatably attached to each yarn feeding and changing device.