JPH055936B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a knitting yarn changing device for a knitting machine.

[Conventional technology]

Conventionally, a knitting machine in which main and sub-knitting machine bodies are arranged opposite to each other and a knitting yarn exchange device is provided only at one end (normally or the left end of the main knitting machine main body) is disclosed, for example, in Japanese Patent Publication No. 58-57532. It is publicly known.

[Problem to be solved by the invention]

However, with a knitting yarn exchange device provided at only one end, when knitting a multicolor pattern by exchanging multiple knitting yarns, it is necessary to knit by exchanging the knitting yarns every two rows, that is, the carriage is at one end. It is a knitting process that involves one reciprocating sliding operation, in which the knitting is changed when it reaches the end (left end), and therefore, it is not possible to knit multicolored patterns in each row, so it takes time to operate the carriage, and the efficiency of the knitting work is reduced. It was very bad. In addition, when knitting every two rows like this, it takes a lot of time to input the knitting data for multi-colored knitting. teeth,
It is necessary to punch holes in a desired pattern so that two rows form one pattern, and the punching operation is extremely troublesome and requires skill. Furthermore, in the actual carriage sliding operation, after a predetermined knitting yarn exchange is performed when the carriage moves forward and the pattern is folded back, the required cam must be switched to the sliding stitch stitch in which no pattern is knitted during the backward movement. Moreover, since this process had to be repeated every time the carriage moved backward, a cumbersome cam switching operation was also required. Therefore, an object of the present invention is to solve the above-mentioned problems, and to make it possible to efficiently knit multicolor patterns by changing the knitting yarn both when the carriage moves in and out, that is, in each row. This method eliminates the need for troublesome cam switching operations, and also eliminates the need for special work to change the knitting yarn for each row.
An object of the present invention is to provide a knitting yarn exchange device.

[Means to solve the problem]

In the knitting yarn exchange device according to the present invention, a sub-knitting machine main body is arranged in front of the main knitting machine main body, and main and sub-carriages are slidably mounted on each needle bed of the main knitting machine main body and the sub-knitting machine main body, respectively. Left and right yarn feeding exchange devices are provided at the left and right ends of the needle bed to releasably hang the knitting yarn from the tension device, respectively, and to exchange the knitting yarn between the main and sub carriages. Then, knitting yarn leading-in/output passages capable of guiding the knitting yarn in and out are formed on both left and right sides between the main carriage and the sub-carriage, respectively, and the main carriage is provided with a knitting yarn leading-in/out passage which can be closed and opened. A pair of left and right connecting members are attached to the sub-carriage so that they can move forward and backward toward the sub-carriage, while the sub-carriage is capable of engaging with the tips of the left and right connecting members, respectively, and is used for positioning and aligning the left and right connecting members. Connecting member holding members for holding after positioning are provided to face the left and right connecting members, respectively. Furthermore, it is equipped with an automatic switching mechanism that switches these left and right connecting members back and forth as the main and sub carriages slide.

[Effect]

According to the present invention, each time the main and sub carriages are slid to the left and right yarn feed exchange devices, knitting yarns are exchanged in the left and right yarn feed exchange devices.
At the time of exchange, the knitting yarn is guided to the knitting yarn lead-in/out passage formed between the main and sub-carriages, and the knitting yarn introduced into the knitting yarn lead-in/out passage is connected to the main and sub-carriages. By closing the knitting yarn introduction/output passage with the member, separation from the knitting yarn introduction/output passage is prevented. At this time, this connecting member is positioned and held by the connecting position holding member on the sub-carriage side.

【Example】

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In Fig. 1, a main knitting machine main body 1 and a sub-knitting machine main body 2
is supported on a knitting machine stand 3, which is slightly longer than these, with the main knitting machine main body 1 at the back and the sub knitting machine main body 2 at the front, and at a required angle. A main carriage 6 and a sub-carriage 7 are mounted on the needle beds 4 and 5 of the main and sub-knitting machine bodies 1 and 2, respectively, so as to be slidable left and right. A rear arm 8 is attached to the main carriage 6, a front arm 9 is attached to the sub carriage 7,
The main and sub carriages 6, 7 slide simultaneously by connecting the arms 8, 9 with the left and right connecting members 10, 11 as described later. On these arms 8 and 9, a rear activation piece 12 and a front activation piece 13, which are L-shaped plates, are each vertically screwed.
A left yarn feeding and changing device 14 is attached to the left end of the knitting machine table 3, and a right yarn feeding and changing device 15 is attached to the right end of the mounting table 1.
6, it is removably installed horizontally. A tightening device 17 is attached to the rear arm 8 as shown in FIG.
The forearm 9 is removably attached to the main carriage 6 by means of a tightening member 18, and the forearm 9 is detachably attached to the auxiliary carriage 7 by means of a tightening member 18. As shown in FIG. 3, horizontal decks 8a are provided at both left and right ends of the rear arm 8, and the left and right connecting members 10, 11 are connected to each other.
They are 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. That is, to explain the connection member 11 on the right side now, it has an inverted U cross section that is long in the front and back, as shown in FIGS. 3 and 4 (cross-sectional view taken along the - line in FIG.
It is a hollow body in the shape of a letter, 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 the connecting stud 20 fixed to the hollow part is provided on the deck 8a. The connecting member 11 passes through the guide groove 8b that is formed by the 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 attached to a mounting stud 21 protruding from the bottom surface of the deck 8a.
is wound up, and a passive member 23 having a substantially L-shaped plane is pivotably supported for horizontal rotation. One end of the torsion spring 22 is connected to a connecting stud 20.
, and the other end is in pressure contact with a spring receiving pin 24 of a passive member 23, and this torsion spring 22 allows the connecting member 11 to move forward (front arm 9).
side), and the passive member 23 is also urged in a certain rotational direction, so that the arm portion 23 on the rear side
a to the connecting stud 20. A protrusion 2 is provided at the free end of the lower surface of the arm portion 23b on the front side of the passive member 23.
5 is provided. Also for the left connecting member 10, a torsion spring 22 and a passive member 23 are mounted on the lower surface of the left deck 8a symmetrically with respect to the right side. U-shaped fitting recesses 10a, 11a are provided at the tips (front ends) of the connecting members 10, 11. On the other hand, on the front arm 9 side, left and right connecting members 10 are attached to the left and right ends of an oblong plate 26 fixed to the upper surface thereof.
Left and right connectors 27 corresponding to 11 are screwed on. The connector 27 has an eccentric cam portion 27 on the lower side of the head 27a which is rotated by the driver.
The fitting recesses 10a and 11a of the connecting members 10 and 11, which are biased by the torsion spring 22 as described above, are removably fitted into the eccentric cam portion 27b, and the rear arm 8 and the forearm 9 are connected. The distance between the rear arm 8 and the front arm 9 in the connected state is determined by the distance between the left and right connecting members 1
Adjustment can be made by turning the connector 27 for each of 0 and 11 and changing the direction of the eccentric cam portion 27b. At the center of the front edge of the rear arm 8, there is a rear yarn feeder body 28,
A front yarn feeder body 29 is attached to the center of the rear edge of the front arm 9, and a yarn feeder 30 is formed at the center between these rear yarn feeder bodies 28 and front yarn feeder body 29 by the combination thereof. Further, left and right knitting yarn guide/in/out passages 31, 32 are formed between the front edge of the rear arm 8 and the rear edge of the front arm 9 on both left and right sides thereof. The left and right connecting members 10 and 11 are fitted with the corresponding connectors 27, and when they are positioned and held thereby, they cross the left and right knitting yarn lead-in/out passages 31 and 32, respectively, and close them. Therefore, the left and right connectors 27 function as connection position holding members that position and hold the connection positions of the left and right corresponding connection members 10 and 11. The rear yarn feeder body 28 has a substantially horizontal mounting portion 33;
A thin yarn path 36 is formed between the inclined part 34 that slopes downward toward the front, the C-shaped recess 35 at the center of its lower end, and the front edge of the inclined part 34 that extends obliquely upward and to the left from the front end of the inclined part 34. a substantially vertical protrusion 37 forming a
It has a guide arm part 38 that projects upwardly and slightly rearward from the right end of the inclined part 34, and a guide protrusion 39 on the opposite side. The front yarn feeder body 29 is
The rear yarn feeder body 28 and each part have a symmetrical shape, and the C-shaped recesses 35 of both meet to form the yarn feeder 30. On the left and right yarn feeding and changing devices 14 and 15, horizontally elongated switching actuating members 40 that can be respectively engaged with the protrusions 25 of the left and right passive members 23 are provided to protrude horizontally inward from each other. . The left and right passive members 23 and the switching member 40 constitute an automatic switching mechanism. Therefore, in Fig. 3, the main and sub carriages 6, 7
slides to the left, and the protrusion 25 of the left passive member 23
When engaged with the tip of the left switching activation member 40, the left passive member 23 rotates counterclockwise from the position shown by the broken line in the same figure to the position shown by the dashed line,
The arm portion 23a on the rear side pushes the connecting stud 20 backward, and the left connecting member 10 is slid backward from the position shown by the dashed line against the torsion spring 22 to the position shown by the solid line, and the left connecting member 27 The knitting yarn leading in/out passage 31 on the left side is opened. By opening this, the left yarn feeding and changing device 14 is connected to the yarn feeder through the left knitting yarn introduction/output passage 31 and the yarn path 36 of the rear yarn feeder body 28 (the right yarn path in the figure). It becomes possible to exchange knitting yarn M with 30. Then, the knitting yarn suspended in the left yarn feeding and changing device 14 as described later passes through the open knitting yarn leading-in/out passage 31.
As the main and sub carriages 6 and 7 reversely slide, the protrusion 3 of the rear yarn feeder 28 moves along the arrow path 41 shown by the solid line in the figure.
7. The yarn is fed to the yarn feeder 30 while being guided by the guide arm 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 maintained in a connected state by the right side connecting member 11. main·
Due to the reverse sliding movement of the sub carriages 6 and 7, the protrusion 25 of the left passive member 23 is moved to the left switching activation member 40.
When the left passive member 23 is released from the torsion spring 22, the left side passive member 23 rotates back to its original position due to the action of the torsion spring 22, and the left side connecting member 10 is moved back from the torsion spring 22.
The fitting recess 10a moves forward and returns due to the action of
is fitted with the left connector 27 again. On the other hand, when the main and sub carriages 6 and 7 are 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 moves clockwise. Rotate to the right side connecting member 1
1 is slid backward, and the knitting yarn leading-in/out passage 32 on the right side is opened. For this reason, the yarn feeding and changing device 15 on the right side
, the right side knitting yarn introduction/output passage 32 and the front yarn feeder body 2
It becomes possible to exchange the knitting yarn M with the yarn feeder 30 through the yarn path 36 of No. 9 (the left yarn path in the figure), and the knitting yarn M held in the yarn feed exchange device 15 on the right side is , passes through the open knitting yarn introducing/extracting passage 32, and as the main and sub carriages 6, 7 reversely slide, the protrusion 37 of the front yarn feeder body 29, the guide arm 38, and the rear arrow path 42 shown by the chain line in the figure The yarn is fed to the yarn feeder 30 while being guided by the guide portion 39 of the yarn feeder body 28. During this time, the rear arm 8 and the front arm 9 are maintained in a connected state by the left connecting member 11. main·
Due to the reverse sliding movement of the sub carriages 6 and 7, the protrusion 25 of the right passive member 23 is moved to the right switching activation member 40.
When it comes off, the right passive member 23 rotates and returns, and the right connecting member 11 returns forward, and its fitting recess 11a refits with the right connector 27. Next, the left and right yarn feeding and changing devices 14 and 15 are oriented symmetrically to each other, but have substantially the same structure, and the structure of the right yarn feeding and changing device 15 is shown in FIG. 5 (plan view) and FIG. Fig. 6 (bottom view), Fig. 7 (partially cutaway front view), Fig. 8 (partially cutaway enlarged bottom view)
This will be explained with reference to FIG. The entire yarn feeding and changing device 15 consists of main and sub-knitting machine bodies 1,
The device is mounted on a frame 43 separate from 2.
The left front corner of the frame 43 is cut out to form a yarn feeding exchange recess 44. A knitting yarn guiding rod 45 extending across the yarn feeding exchange recess 44 is screwed to the upper surface of the frame 43.
The first passive lever 46 and the second passive lever 47 are
The former faces forward and the latter faces rearward, and are horizontally rotatably supported on a common wheel shaft 48. Also, a feed lever 49 is provided on the bottom surface of the frame 43.
is also horizontally rotatably supported on the wheel shaft 48, and a disc-shaped feed wheel 50 is fixed to the wheel shaft 48. Both passive levers 46 and 47 are plate-shaped, with the former lowered and
Although they are stacked one on top of the other with the latter on top, they can be rotated individually. The first passive lever 46 has an abutment portion 46a that can engage with the front activation piece 13 on one long edge thereof, and the second passive lever 47 has an abutment portion 46a on one long edge of the rear activation piece 13. An impulse portion 47a that can engage with the piece 12 is provided vertically. The second passive lever 47 has a small spring hooking protrusion 47a hanging from the periphery of its central part, and the first passive lever 46 also has spring hooking protrusions 46b that have the same shape as this spring hooking protrusion 47b and overlap with it in the front and back. have Since one side of the torsion spring 51 wound around the wheel shaft 48 is hung on these spring hook protrusions 47b, 46b, both passive levers 46,
47 are biased counterclockwise in FIG. 5 by this torsion spring 51. Further, the second passive lever 47 has a pushing protrusion 47c at the other end, and the first passive lever 46 also has this pushing protrusion 47c.
It has a pushing protrusion 46c having the same shape as 7c. Fifth
In the figure, the 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. The other end (front end) of this feed lever 49 is planted with a pin 54 that protrudes from an arc-shaped elongated hole 53 provided in the frame 43, and the pin 54 is reciprocated as described above. It is in pressure contact with the pushing protrusions 46c, 47c of both driven levers 46, 47 attached in the clockwise direction. 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 has a spring hooking protrusion 55a that protrudes above the elongated hole 53, and this spring hooking protrusion 55a
the other side of the torsion spring 51 is provided,
The feed pawl 55 is biased by the torsion spring 51 so that its tip comes into pressure contact with the periphery of the feed wheel 50 . A plurality of recesses 5 are provided on the periphery of the feed wheel 50 to engage with the tips of the feed pawls 55.
0a is provided with a constant phase difference. On the other hand, a reversal prevention claw 57 is attached to a mounting base 56 attached to the vertical front wall 43a of the frame 43.
It is pivotably mounted around 8. The reverse rotation prevention pawl 57 is urged toward the recess 50a of the feed wheel 50 by the torsion spring 59, and its tip engages with the recess 50a of the feed wheel 50 to prevent reverse rotation. 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 connected to the wheel shaft 48.
The second passive lever 47 is tilted to the right while the second passive lever 47 is tilted to the left about the center. In this state, when the main and sub carriages 6, 7 slide rightward to the right end portions of the needle beds 4, 5 as shown in FIG. The abutting portion 46 of the first passive lever 46 tilted toward
a, and the first passive lever 46 is rotated counterclockwise against the torsion spring 51 from the solid line position to the chain line position in the figure. 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 actuating piece 13 collides with the first driven lever 46, the rear actuating piece 12 collides with the gathering part 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. When the feed lever 49 is rotated by the first passive lever 46 as described above, the feed pawl 55 attached thereto is released from the recess 50a of the feed wheel 50 as shown in FIG. 8 (bottom view). However, at this time, the tip of the feed pawl 55 pushes up the tip of the reversal prevention pawl 57, and the reversal prevention pawl 57 is temporarily removed from the recess 50a. The feed pawl 55 moves the feed wheel 5 clockwise from the solid line position in FIG.
The feed lever 49 moves while sliding on the periphery of the feed lever 49.
After a certain amount of rotation, it is fitted into the next recess 50a at the position indicated by the dashed line in the figure. On the other hand, since the anti-reverse claw 57 fits into the recess 50a again, the rotation of the feed wheel 50 is prevented while the feed claw 55 slides on the periphery of the feed wheel 50. After that, the feed lever 49 moves the tension spring 5
When it is rotated back by the action of 2, the feed claw 55
is rotated counterclockwise to the solid line position where it collides with the mounting base 56 while still being fitted into the next recess 50a, and this rotation causes the feed wheel 50 to rotate a certain amount in the same direction. When the feed wheel 50 rotates, the reverse prevention pawl 57, which has been forcibly removed from the previous recess 50a, is also fitted into the next recess 50 in an engaged state together with the feed pawl 55. Next, the front activation piece 13 and the rear activation piece 12 are connected to the first and second activation pieces.
When removed from the passive levers 46, 47, these and the feed lever 49 are again held in the state shown in FIG. After this, when the main and sub carriages 6 and 7 are folded back and slid 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. collides with the rear activation piece 12, and the pin 54 is pushed by the second passive lever 47,
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 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 vertically overlapping manner below the feed wheel 50, and when the feed wheel 50 rotates, these switching cams 60 also rotates 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 pivoted with a step. These five yarn feeders 61 are made of relatively thick wire, and each has a tip 61a bent approximately 90 degrees, and a hook 61b for hooking the knitting yarn is provided at the tip. The lengths up to the tip 61a are different from each other, and those on the upper stage are gradually longer than those on the lower stage. And these five yarn supply bodies 61
The tips 61a of the frames 43 are arranged in parallel on the left and right.
The slit 43c of the hanging wall 43b projects 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 60c protruding from the periphery of a disc 60b having a flange 60a and facing each other in the axial direction, as shown in FIGS. 9A, C, and D. , a pair of notches 60d are formed between these engaging portions 60c, or a ring-shaped engaging portion 61e is provided protruding around the entire circumference as shown in FIG. The stems of the five yarn feeders 61 are pressed into contact with the engaging portions 61c or 61e of the corresponding switching cams 60 by the tension springs 63. Note that FIGS. 9A, B, C, and D are cross sections taken along the - line, - line, - line, and - line in FIG. 7, respectively. Therefore, regarding the switching cam 60 having a pair of arcuate engaging portions 60c and the corresponding yarn supplying body 61, when the stem of the yarn supplying body 61 falls into the notch 60d of the switching cam 60, the yarn supplying body 61 The body 61 has its tip 61a formed into the slit 43c of the frame 43.
It protrudes further and advances to a position intersecting the knitting yarn guiding rod 45 within the yarn feeding exchange recess 44, that is, 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 yarn supplying body 60
1 retreats to a retracted position where its tip 61a retracts from the slit 43c and only the hook 61b protrudes. On the other hand, regarding the switching cam 60 having the ring-shaped engagement portion 60e and the corresponding yarn feeder 61, the yarn feeder 61 does not move even when the switching cam 60 rotates and is always held at the retracted position. . In this example, in order to replace three knitting yarns,
Of the five yarn feeders 61, the first, third, and fifth from the bottom (first, third, and fifth from the right when viewed from the arrangement of their tip portions 61a) are The second and fourth rows are not used. Therefore, the five switching cams 60 are arranged in the first stage from the bottom,
The three sheets in the third and fifth stages have arcuate engaging portions 60c as shown in FIGS. 9A, C, and D,
The two sheets in the second and fourth stages have a ring-shaped engagement portion 60d as shown in FIG. The three switching cams 60 having the arcuate engaging portions 60c are overlapped with each other with the phases of the arcuate engaging portions 60c being different by a predetermined angle, and one of the switching cams 60 is connected to the corresponding feeder. When the yarn body 61 is advanced to the yarn feeding position, the other two yarn bodies 61 corresponding to the yarn feeding body 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 and 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 engaging 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 and changing device 14 on the left side
is structurally the same as the yarn feeding exchange 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 five yarn feeders 61 have their hooks 61b directed toward the rear inside the yarn feed exchange recess 44, and the first passive lever 46 is placed on the rear side, the second passive lever 47 is placed on the front side, and the 1
The passive lever 46 engages with the rear activation piece 12, and the second passive lever 47 engages with the front activation piece 13, respectively. Then, the yarn feeding exchange device 1 on the right side
5, the first, third, and fifth yarn feeders 60 from the right of the five yarn feeders 60 are sequentially advanced to the yarn feeding position in this order, while the yarn feeder changing device 14 on the left In this case, the first, third, and fifth yarn feeders 60 from the left of the five yarn feeders 60 are sequentially advanced to the yarn feeding position (displaced backward with respect to the needle bed 4) in this order, and the order is as follows. It's the opposite of the right side. Therefore, as shown in FIG. 1, a conventionally known tension device 64 is set up at the center of the rear side of the needle bed 4, and three knitting yarns of different colors M ₁ , M ₂ ,
The operation will be described in the case where the _M3s are suspended in parallel on the left and right and the yarns are exchanged by the left and right yarn supply and exchange devices 14 and 15. In addition, in the following explanation, for convenience, three knitting yarns M ₁ which are arranged in parallel by the tension device 65,
M ₂ and M ₃ are referred to as "first knitting yarn", "second knitting yarn", and "third knitting yarn" in order from left to right, and the above three knitting yarns are actually used in the left yarn feeding and changing device 14. The book yarn supplying body 61 is similarly oriented from left to right and is referred to as "left first yarn supplying body", "left second yarn supplying body", "left third yarn supplying body",
In addition, the three yarn feeders 61 actually used in the right yarn feeder exchange device 15 are oriented from the left to the right in the same manner, although the order of operation is reversed.
They will be referred to as "second right yarn supplying body" and "third yarn supplying body". Now, as shown in FIG. 10, the first knitting yarn M ₁ is fed directly from the thread hooking section 65 to the yarn feeder 30, and the first knitting yarn M ₂ comes into contact with the lower side of the left knitting yarn guiding rod 45. When the third knitting yarn M ₃ is in contact with the upper side of the knitting yarn guide rod 45 on the right side and is hooked on the hook 61b of the right third yarn feeder, do. 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 and 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 lead-in/out passage 32 opens, and the second knitting yarn M ₂ passes through this knitting yarn lead-in/out passage 32 and comes into contact with the upper side of the knitting yarn guide rod 45 on the right side while being fed to the yarn feeder 30 . Furthermore, when the main and sub carriages 6 and 7 slide 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 move. After rotating by a predetermined amount, the second right yarn feeder is moved back from the yarn feeding position to the retracted position, and at the same time, the third right yarn feeder is advanced from the retracted position to the yarn feeding position. As a result, the second knitting yarn M ₂ is hooked to the right second yarn supplier hook 61b, while the third knitting yarn M ₃ is detached from the hook 61b of the right third yarn supplier and guides the knitting yarn on the right side. It hangs on rod 45. When the main and sub carriages 6, 7 turn back and slide to the left as shown in FIG. The two switching cams 60 rotate 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 and standby position. Therefore, the third knitting yarn M3 is advanced from the retracted position to the yarn feeding position, and is fed to the yarn feeding port 30 of the third knitting yarn _M3 . 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 introducing/extracting passage 32. In FIG. 12, the first knitting yarn _M1 is fed to the yarn feeder 30, and the second knitting yarn _M2 is fed to the hook 61b of the left second yarn feeder.
The third knitting yarn _M3 is hooked to the hook of the right third knitting yarn body (not shown). From this state, when the main and sub carriages 6 and 7 slide to the left and the left passive member 23 engages with the left switching activation member 40, the left connecting member 10 retreats and the left knitting yarn is guided in and out. The passage 31 opens and the first knitting yarn
M ₁ passes through this knitting yarn introduction/output passage 31 and comes into contact with the lower side of the left knitting yarn guide rod 45 while being fed to the yarn feeder 30 . Further, when the main and sub carriages 6 and 7 slide 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 5
The two switching cams 60 rotate by a predetermined amount at the same time, and the first left yarn feeder is moved back from the yarn feeding position to the retracted position, and at the same time, the second left yarn feeder is advanced from the retracted position to the yarn feeding position. . As a result, the first knitting yarn _M1 becomes the first knitting yarn M1.
As shown in Fig. 3, the second knitting yarn M2 is hooked on the hook 61b of the first left yarn supplying body, while the second knitting yarn _M2 is detached from the hook 61b of the second left yarn supplying body and hooked on the left knitting yarn guiding rod 45. . When the main and sub carriages 6 and 7 turn back and slide to the right, the second passive lever 47 of the yarn feeding and changing device 14 on the left side is rotated by the front activation piece 13, and the five switching cams 60 are rotated as described above. Similarly, the second left yarn feeder is rotated by a predetermined amount in the same direction, and at the same time, the left second yarn feeder is retreated from the yarn feeding position to the retracted position, and at the same time, the left third yarn feeder is moved from the retracted position to the yarn feeding position for the next standby. Then, the second knitting yarn M ₂ is fed to the yarn feeder 30. When the left passive member 23 is disengaged from the left switching activation member 40, the left connecting member 10 moves forward and closes the left knitting yarn introducing/extracting passage 31. The actual thread exchange order is from FIG. 12 to FIG. 13, then from FIG. 10 to FIG. 11. Therefore, the left and right yarn feeding exchange devices 14 and 15 both arrange the three knitting yarns M ₁ , M ₂ , and M ₃ in the same order as the arrangement order in the tension device 64, and also ensure that each yarn is fixed one by one. The yarn feeder 14 on the left side connects the three yarn feeders to the first left yarn feeder, then the second left yarn feeder, and then the third left yarn feeder. The three knitting yarns are transferred to and from the yarn feeder 30 in the order of the first knitting yarn M ₁ , the second knitting yarn M ₂ , and the third knitting yarn M ₃ . On the other hand, the right yarn feeding and changing device 15 sequentially moves the three yarn feeding bodies to the yarn feeding position in the order of the right third yarn feeding body, then the right second yarn feeding body, and then the right first yarn feeding body. The knitting yarn is moved forward and the three knitting yarns are replaced in the order of third knitting yarn M ₃ , second knitting yarn M ₂ , and first knitting yarn M ₁ . Therefore, the three knitting yarns M ₁ , M ₂ , and M ₃ are exchanged smoothly without getting entangled with each other. In the above embodiment, three of the five switching cams 60 are substantially activated, and the five yarn feeders 61 are
Three of the switching cams 60 or all five switching cams are used to replace the three knitting yarns, but four or five switching cams 60 or all five switching cams are used to replace the four or five knitting yarns. Alternatively, the number of switching cams may be increased to exchange even more knitting yarns.

【Effect of the invention】

According to the present invention, since the knitting yarn exchange positions are provided at both the left and right ends of the needle bed, the knitting yarn can be exchanged manually in both the forward and backward movements of the carriage, that is, in each row. This eliminates the need for the troublesome cam switching operation that was required in the past every time the carriage moves backward, making it possible to efficiently knit multicolor patterns. In addition, by closing the knitting yarn leading in/out passage between the main and sub carriages with a connecting member that connects these carriages, it is possible to prevent the knitting yarn introduced into the knitting yarn leading in/out passage from coming off. Further, the connecting member can be automatically switched between the connecting position and the releasing position by sliding the main and sub carriages. Moreover, since the connecting member can be positioned and held by the connecting position holding member on the side of the sub-carriage, for example, if the connecting position becomes loose, the connection becomes unstable.
There is no problem with the integral sliding of the main and sub carriages.

[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 3 is a sectional view taken along the line -- in FIG. Figures 5 to 9
The figures show the yarn feeding and changing device on the right side, FIG. 5 is a plan view thereof, FIG. 6 is a bottom view, FIG. 7 is a partially cutaway front view, FIG. 8 is an enlarged cutaway bottom view of a portion thereof, and FIG.
Figures A, B, C, and D are the - lines in Figure 7, respectively;
- line, - line, - line sectional view. 10 to 13 are plan views illustrating the thread exchange operation. 1...Main knitting machine main body, 2...Sub knitting machine main body, 4, 5
...Needle bed, 6...Main carriage, 7...Subcarriage, 10, 11...Connecting member, 14...Left yarn feeding change device, 15...Right yarn feeding changing device, 23
... Passive member, 27 ... Connector, 31, 32 ...
Knitting yarn lead-in/out passage, 40... switching actuation member.

Claims (1)

[Claims] 1 A sub-knitting machine main body is arranged in front of the main knitting machine main body, and the main and sub-carriages are slidably mounted on the respective needle beds of the main and sub-knitting machine main bodies, and the left and right ends of the needle beds are The left and right yarn feeding exchange devices are provided to releasably lock the knitting yarns from the tension device and to exchange the knitting yarns between the main carriage and the sub-carriage. A knitting yarn lead-in/outlet passageway capable of guiding the knitting yarn in and out is formed on the left and right sides of the space, and a pair of left and right connecting members for closing and opening the knitting yarn lead-in/outlet passage are formed in the main carriage and directed toward the sub-carriage. In the past, the sub-carriage was fitted so that the body could be attached to the front and back, and the sub-carriage had a connecting member holding member that could be freely engaged with the tips of the left and right connecting members, and that positioned the left and right connecting members and held them after positioning. , a knitting machine characterized by having left and right connecting members facing each other, and further comprising an automatic switching mechanism that switches these left and right connecting members back and forth as the main and sub carriages slide. Thread exchange device.