JP3015314B2 - Feeding device for knitting yarn in flat knitting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knitting yarn supply port device in a flat knitting machine useful for knitting a knitted structure using a large number of knitting yarns in a carriageless type flat knitting machine. .

[0002]

2. Description of the Related Art In a carriageless flat knitting machine, when a plurality of knitting yarns are switched and used within one course, for example, in an intarsia pattern knitted fabric, independent knitting yarns are used for each knitting yarn. It is common to match the supply ports and drive each supply port individually.

[0003] That is, each supply port is mounted downward on a carrier that travels left and right along the needle bed above the needle bed, and the carriers are provided via drive mechanisms provided corresponding to the respective needles. Each supply port is configured to be driven to a predetermined position at a predetermined time along an individual guide rail disposed above the needle bed.

[0004]

According to the prior art, each supply port is driven via a carrier disposed above the needle bed corresponding to each supply port, so that the maximum number that can be disposed is limited. The problem was that the number of knitted fabrics that can be knitted was insufficient, and the number of knitted fabrics that could be knitted was insufficient. Further, if an attempt is made to provide more supply ports, the configuration of a series of driving members such as a carrier, a guide rail, and a driving mechanism disposed above the needle bed becomes extremely complicated, and necessary maintenance and inspection are required. Work can be difficult.

Accordingly, an object of the present invention is to eliminate the substantial limitation on the maximum number of supply ports by mounting a plurality of supply ports on a common moving body in view of the problems of the prior art. It is an object of the present invention to provide a knitting yarn supply port device in a flat knitting machine capable of simplifying the configuration of a driving member disposed above a needle bed.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention comprises a carrier moving left and right along a guide rail disposed above the front and rear needle beds, and a vertical carrier with respect to the carrier. A movable body connected so as to be capable of parallel movement, a plurality of supply ports downwardly mounted on the movable body so as to be located between the front and rear needle beds, and an actuator for driving the movable body up and down. The gist of the present invention is that the mouth is driven downward through the actuator to a height position where the leading supply nozzle interferes with the knitting needle at the clearing position or the tack position.

[0007] The supply nozzle may be capable of swinging left and right with respect to a support member for fixing the supply port to the moving body.

[0008] The supply port may be attached to the moving body at a pitch that is an integral multiple of the arrangement pitch of the knitting needles on the needle bed.

[0009]

According to the structure of the present invention, since the plurality of supply ports are mounted on a common moving body, they can be driven at once via the moving body, and it is necessary to provide a carrier and a driving mechanism individually. There is no. It is assumed that a knitting yarn is supplied to each supply port, and each knitting needle is driven in association with each supply port via a drive source such as a linear motor.

[0010] The supply port is disposed at a low position sufficiently close to the tooth opening of the needle bed by allowing the supply nozzle at the tip to swing left and right with respect to the support material, and is mechanically connected to the knitting needle. Interference does not cause any particular problem. Therefore, even if the knitted fabric at this time includes a skipped knitting of an extremely large distance, there is no possibility that the knitting operation becomes impossible or the knitting operation becomes unstable. When the height position of the supply port is low, the knitting yarn from the supply port forms a small inclination angle with respect to the tooth opening,
This is because even the knitting needle at a position away from the knitting needle that previously restrains the knitting yarn can be reliably captured.

If the pitch of the supply ports on the moving body is set to an integral multiple of the arrangement pitch of the knitting needles on the needle bed, each supply port can correspond to a predetermined knitting needle at once by driving the moving body. . However, the pitch of the supply ports at this time may be constant over the entire length of the moving body, or may be appropriately varied according to the pattern of the knitted fabric to be knitted.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

The knitting yarn supply port device in the flat knitting machine includes a common moving body 21 disposed above the front and rear needle beds NB, NB.
A plurality of supply ports 10, 10,... Are attached downwardly to 21 (FIGS. 1, 2). However, the knitting needles N, N... On each needle bed NB are connected to a driving body N1 driven by a linear motor, respectively.
NB, knitting needles N, N ... form a carriageless type flat knitting machine. The supply ports 10, 10,...
The needle beds NB are arranged between the front and rear needle beds NB.

Each supply port 10 is formed by connecting a supply nozzle 13 via a coil spring 12 to the tip of a support member 11 formed of a hollow pipe (FIG. 3).

The supply nozzle 13 is provided, together with the support material 11,
It is formed of a hollow pipe made of metal such as stainless steel having good wear resistance, and is formed by cutting a short hollow pipe of the same size as the support material 11. Coil spring 1
2 is formed to have an inner diameter that matches the outer diameter of the support member 11 and the supply nozzle 13.
a. However, the coil spring 12
May be joined to the support member 11 and the supply nozzle 13 by welding or brazing. The support member 11 and the supply nozzle 13 have, for example, an outer diameter of 2.5 mm and a wall thickness of 0.1 to 0.1 mm.
It is 0.15 mm, and the knitting yarn F can be commonly inserted through the support member 11, the coil spring 12, and the supply nozzle 13.

When no external force is applied to the supply nozzle 13, the coil spring 12 makes the supply nozzle 1
3 can be held in a straight line (solid line in FIG. 3).
Further, when an external force is applied to the supply nozzle 13 in the radial direction (in the direction of arrow K1 in the figure), the coil spring 12 bends in accordance with the magnitude of the external force, and the coil spring 12 moves in the direction in which the external force is applied. Can be swung obliquely (two-dot chain line in the figure). When the external force is removed, the supply nozzle 13 automatically returns to the original position via the coil spring 12.

The moving bodies 21, 21 are long members having a U-shaped cross section (FIGS. 1, 4), and grooves 21a, 21a... Pitch P1
It is formed up and down every time. Therefore, the supply ports 10, 1
Are mounted detachably on the moving bodies 21 by housing the supporting members 11 in the grooves 21a and mounting the holding plates 22 on the moving bodies 21 via bolts 22a. In addition, the supply port 1 attached to each moving body 21
The pitches P1 of 0, 10, ... are knitting needles N, N on each needle bed NB.
Are integer multiples of the arrangement pitch of. Also, presser plate 2
2 and 22 are shorter than the entire lengths of the moving bodies 21 and 21. Therefore, the supply ports 10, 10...
., and an offset range NBb in which the supply ports 10, 10,... are not provided is formed on the other side.

The moving bodies 21, 21 are connected to upper carriers 24, 24 via brackets 23, 23 at both ends.
, And are supported in a detachable and linear manner (FIGS. 1 and 2). In addition, each bracket 23 can be easily positioned and fixed to the carrier 24 via the guide bracket 23a.

Each carrier 24 has rollers 24a, 24a
a are attached to the top and bottom, and rollers 24a, 24a.
Are guide rails 25 disposed above the needle beds NB, NB.
Are engaged from both above and below. Therefore,
The carrier 24 can be moved right and left along a guide rail 25 via rollers 24a, 24a,.

The carriers 24, 24 on both sides are connected to an endless timing belt 26 using a middle rail 24b, respectively.
(FIGS. 1 and 5). That is, the middle pier 24
b is formed so as to protrude from the back side of the carrier 24 (FIG. 2), and the timing belt 26 is provided with bolts 24c1,
Presser foot 24 screwed to middle rail 24b by 24c1
c, it is connected to the upper surface of the middle rail 24b (FIG. 2,
(Fig. 5). However, grooves 24c2, 24c2 conforming to the surface shape of the timing belt 26 are formed on the lower surface of the presser foot 24c.
Are formed, and the presser foot 24c can connect the carrier 24 to the timing belt 26 so as to be relatively immovable by sandwiching the timing belt 26 between the presser foot 24c and the middle rail 24b.

The timing belt 26 includes the right and left rollers 2.
6a and 26a (FIG. 1), and one roller 26a is connected to a driving servomotor 26b. Further, the timing belt 26 is provided with tension rollers 26c, 26c. Therefore, the moving bodies 21, 21, the supply ports 10, 10,.
6b, the timing belt 2 is driven in the opposite direction.
6, guide rails 25 via carriers 24, 24,.
It can be reciprocated right and left along the needle beds NB, NB.

Above the needle beds NB, NB, supply ports 10,
Using a guide rail 25 that guides the carriers 24, 24 ... for the 10 ..., another carrier 32 for mounting the supply port 31 downward is provided (Fig. 2). Needle bed N
Further guide rails 33, 33,... Are arranged above the guide rails B and NB in parallel with the guide rail 25, and each guide rail 33 is combined with one or two carriers 32, 32, Each carrier 32 has a supply port 3
1 is mounted downward.

Each carrier 32 has the same construction as the carrier 24, and reciprocates the corresponding supply port 31 left and right individually via a timing belt 34 and a servo motor (not shown) for driving the timing belt 34. Can be done. The supply ports 10, 10,..., 3
1, 31, ... are the knitting needles N, N on the needle beds NB, NB, respectively.
Can be supplied with a knitting yarn (not shown). However, the supply ports 10, 10,... Correspond to the knitting needles N, N in which the supply nozzle 13 is driven to the clearing position or the tack position.
Are arranged at a low height position h sufficiently close to the tooth gap H of the needle beds NB and NB so as to interfere with the supply ports 31 and
Are arranged at a sufficiently high position so as not to interfere with the knitting needles N.

Now, the knitting yarns F, F are supplied to any two supply ports 31, 31, and the supply ports 31, 31 are alternately moved right and left, and the needle beds NB, NB on the front and rear needle beds NB, NB. When the knitting needles N, N ... are alternately operated in relation to the supply ports 31, 31, on the front and rear needle beds NB, NB,
The knitted fabrics A, A can be independently knitted independently (FIG. 6). However, in the figure, the knitted fabric A is knitted in a flat knitting structure, and when the supply port 31 is moved from left to right, for example, an even-numbered knitting needle N, When the supply port 31 is operated from right to left, the odd-numbered knitting needles N are operated with respect to the knitting yarn F indicated by the reference symbol Fb. Also, in the same figure, the symbol Po indicates the arrangement pitch of the knitting needles N, N... In each needle bed NB.
The pitch P1 of 0, 10,... Is shown as P1 = 4Po. The knitted fabrics A, A knitted on the front and rear needle beds NB, NB have an offset range NBb on the left and right opposite sides, and are knitted to a width corresponding to the length range NBa of the presser plates 22, 22.

On the other hand, the supply ports 10, 10,... Supply the insertion yarn B to each of them, knit the front and rear knitted fabrics A, A, and simultaneously adjust the knitted fabrics with respect to a predetermined wale position for each pitch P1. Insert yarns B, B ... at every course pitch P2 of A
Are alternately connected, so that a three-dimensional knitted structure connecting the knitted fabrics A, A via the insertion yarns B, B... Can be continuously knitted (FIGS. 6, 7). However, in FIG. 7, (B) and (C) of FIG.
It is an arrow view and a Y arrow equivalent view. In the same figure, arrow C indicates the left and right course directions of each knitted fabric A, and arrow W indicates
The vertical direction in which each knitted fabric A is knitted is shown.

Are inserted in the course direction of the knitted fabrics A at every pitch P1 of the supply ports 10, 10,... Are alternately connected at every course pitch P2, and are continuous in the longitudinal direction of the knitted fabrics A, A. Therefore, such a knitted structure body is air-tightly finished by treating each knitted fabric A with an appropriate sealing material such as a rubber material, and airtightly connecting the knitted fabrics A and A with each other. A high pressure-resistant bag for a pneumatic device such as a bag can be configured. This is because the entire knitted fabrics A, A are uniformly reinforced via the insertion yarns B, B,..., So that breakage due to excessive swelling can be effectively prevented.

The supply ports 10, 10,...
Are alternately moved to the left and right by an amount corresponding to the offset range NBb so as to correspond to the knitted fabrics A, A alternately. At this time, each supply port 10
Is the knitting needle N at the welt position while pulling the insertion yarn B.
Is passed in one direction (the direction of arrow K1 in FIG. 8A), and then the knitting needle N is driven to the tack position (FIG. 8B), and is returned slightly in the opposite direction to get over the knitting needle N. The knitting needle N can be returned to the welt position and the insertion thread B can be tacked on the knitting needle N (the same figure (D)). The supply nozzle 1 of the supply port 10
3 swings rearward in the traveling direction via the coil spring 12 when climbing over the knitting needle N (two-dot chain line in the same figure (C)).
By returning over the knitting needle N, it returns to the normal linear state (solid line in the figure).

However, when the supply yarns 10, 10,... Do not connect the insertion yarns B, B,.
Are alternately retracted to the positions of the even-numbered and odd-numbered knitting needles N, N,... So as not to mechanically interfere with the odd-numbered or even-numbered knitting needles N, N,. The length L of the insertion yarns B, B ... interposed between the knitted fabrics A, A in this manner is L こ の NBb. That is, even when the length L ≒ NBb of the insertion yarn B is long, the height position h is sufficiently low, so that the inclination angle of the insertion yarn B with respect to the tooth opening H is sufficiently large. It is possible to reduce the size and to ensure that the knitting needle N catches the inserted yarn B.

Each supply port 10 can connect the insertion yarn B to the knitted fabric A according to the procedure shown in FIG. 9 instead of the procedure shown in FIG. That is, after each supply port 10 drives the corresponding knitting needle N to the tack position (FIG. 9 (A)), it passes over the knitting needle N (in the direction of arrow K1 in FIG. 9 (B)).
Is returned to the welt position, whereby the inserted yarn B can be captured (FIG. 3C). According to FIG. 8, the insertion yarn B is connected to the knitted fabric A in a twisting tack style (FIG. 6), but according to FIG. 9, it is connected by a normal tack (FIG. 9 (C)). . 8 and 9, the knitting needle N for catching the inserted yarn B may be driven to the clearing position instead of being driven to the tack position. , A via a knit.

[0030]

[Other Embodiments] In FIG.
It can be formed from a hollow pipe made of an elastic material such as a rubber material (FIG. 10). The supply nozzle 13 includes the coil spring 1.
The connection can be performed by directly fitting to the front end of the support member 11 without the intermediary of the support member 2.

The supply nozzle 13 made of an elastic material is
A mail guide 13a may be attached to the tip (FIG. 1)
1). The mail guide 13a can prevent the supply nozzle 13 from being damaged by the knitting yarn F, and can improve the durability of the supply nozzle 13. Note that the supply nozzle 13 in FIG. 3 may also be provided with a mail guide (not shown) at the tip, as in FIG.

The supply nozzle 13 in FIG. 3 may itself be used as a mail guide (FIG. 12). At this time, the supply nozzle 13 is preferably formed slightly longer so that the point of application of the external force by the knitting needle N is located on the peripheral surface (arrow K1 in the figure).

In each of the above embodiments, the outer diameter of the supply nozzle 13 may be smaller than that of the support member 11 and may be 1.5 to 2.0 mm. By making the supply nozzle 13 thin, the degree of interference with the other supply ports 31, 31,... Can be reduced, and the relative movement with the supply ports 31, 31,.

The supply nozzle 13 may be connected to the support member 11 via a leaf spring 14 (FIG. 13). At this time, the supply nozzle 13 is inserted into the hollow mail guide 1 in order to insert the knitting yarn F pulled down along the support member 11 and the leaf spring 14.
3a is mounted. Further, as the support member 11, a solid material is used instead of the hollow pipe. The leaf spring 14 can bend left and right to swing the supply nozzle 13 left and right in response to an external force applied when the supply nozzle 13 contacts the knitting needle N (two-dot chain line in the figure).

The supply ports 10, 10,...
In contrast, a plurality of wires can be mounted for each large pitch P3 (FIG. 14A).

The base portions A1, A1,... Of the knitted fabric A are knitted using one or two or more supply ports 31, 31,. A
2, A2 ... can be knitted all at once (Fig. (B)
~ (D)), base portions A1, A1 ..., pattern portions A2,
The knitting efficiency of the intarsia pattern knitted fabric A having A2... Can be greatly improved. However, at this time, the supply ports 10, 10,... Are integrally formed so that the tip of the supply nozzle 13 is integral with the support member 11 and do not swing left and right, and the height position h is set to the other supply ports 31, 31,. ... may be set in the same manner. In FIG. 14, the supply ports 10, 10
.. May be constant in the longitudinal direction of the moving body 21 or may be different in any order. However, the arrangement pitch of the pattern portions A2, A2,... On the knitted fabric A at this time is formed so as to match the pitch P3 of the supply ports 10, 10,.

In FIG. 14D, the base portions A1a, A1a... Use the supply ports 31, 31... And are integrally knitted with the base portion A1 to realize an irregular intarsia pattern. ing. The moving body 21 shown in FIG.
Is formed integrally with the entire length of the moving body 21.
Can be suspended by the carriers 24, 24 at both ends.

The moving body 21 to which the plurality of supply ports 10, 10,... Are mounted may be connected to the carriers 24, 24 via an actuator (not shown) so as to be vertically movable in parallel. At this time, the supply ports 10, 10,... May be of a swing type in which the tip of the supply nozzle 13 swings right and left, or may be an integral type that does not swing left and right. The integrated supply ports 10, 10,... Are temporarily retracted upward only when they cross over the knitting needles N, N. Can be knitted without hindrance.
The oscillating supply ports 10, 10,... Are spaced a long distance from one end of the needle bed NB when, for example, the first knitting of the pattern portions A2, A2,. Even when pulling the knitting yarn, the knitting operation is started stably by driving downward and setting the height position h sufficiently low, and then retracted to a sufficiently high position to remove the knitted fabric A. The pattern portions A2, A2... Can be knitted.

The vertical movement of the moving body 21 may be achieved by, for example, driving the bracket 23 up and down via a solenoid (not shown) mounted downward on each carrier 24 in FIG. However, the bracket 23 at this time
For example, it is preferable that a vertically long hole is formed, and a pair of upper and lower guide pins projecting from the carrier 24 is engaged with the long hole to guide the hole vertically.

[0040]

As described above, according to the present invention, a plurality of supply ports are attached downward to a moving body which reciprocates left and right along the front and rear needle beds, so that each supply port is provided. Therefore, even when a plurality of knitting yarns are switched and used, a substantial restriction on the maximum number of supply ports can be eliminated because the plurality of knitting yarns can be driven at a time via the moving body. In addition, the degree of freedom of knitted fabric that can be knitted can be greatly improved, and there is no need to provide a separate drive mechanism for each supply port, making the configuration of the drive member disposed above the needle bed extremely simple. There is an excellent effect that can be.

[Brief description of the drawings]

FIG. 1 is an explanatory front view of the entire configuration.

FIG. 2 is a side view of the overall configuration.

FIG. 3 is an explanatory front view of a supply port.

FIG. 4 is an enlarged perspective view of a main part of FIG. 1 (1);

5 is an enlarged perspective view of a main part of FIG. 1 (2).

FIG. 6 is an enlarged view of a main part of a knitted structure.

FIG. 7 is a schematic diagram of the structure of a knitted tissue body.

FIG. 8 is a diagram (1) for explaining the operation of FIG.

FIG. 9 is an operation explanatory view (2) of FIG. 1;

FIG. 10 is a diagram corresponding to FIG. 3, showing another embodiment.

FIG. 11 is a sectional view of a main part showing another embodiment (1).

FIG. 12 is a sectional view of a main part showing another embodiment (2).

FIG. 13 is an explanatory perspective view of a main part showing another embodiment.

FIG. 14 is an explanatory view showing another embodiment.

[Explanation of symbols]

 F: Knitting yarn NB: Needle bed N: Knitting needle Po: Arrangement pitch P1, P3: Pitch h: Height position 10: Supply port 11: Support material 13: Supply nozzle 21 ... Moving body 24: Carrier 25: Guide rail 26 ... Timing belt 26b Servo motor

Continuation of front page (56) References JP-A-62-97949 (JP, A) JP-A-7-305254 (JP, A) Patent 2523965 (JP, B2) JP-B-61-58577 (JP, B2) JP 4-33902 (JP, B2) JP-B 51-37981 (JP, B2) JP-B 62-11988 (JP, Y2) JP-B 3-54150 (JP, Y2) (58) Int.Cl. ⁷ , DB name) D04B 15/56

Claims (3)

(57) [Claims] 1. A carrier moving left and right along a guide rail disposed above the front and rear needle beds, a moving body connected to the carrier so as to be able to move up and down in parallel, and A plurality of supply ports that are attached to the moving body downward so as to be located in the middle, and an actuator that drives the moving body up and down, the supply port is provided with the supply nozzle at the tip via the actuator. A knitting yarn supply port device in a flat knitting machine, which is driven downward to a height position that interferes with a knitting needle at a clearing position or a tack position. 2. The knitting yarn supply in a flat knitting machine according to claim 1, wherein the supply nozzle is capable of swinging left and right with respect to a support member fixing the supply port to the moving body. Mouth device. 3. The flat knitting machine according to claim 1, wherein the supply port is attached to the moving body at a pitch that is an integral multiple of an arrangement pitch of the knitting needles on the needle bed. Thread supply device.