JP2002302852A - Apparatus for treating terminal yarn in flat knitting machine and method for treating the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for treating terminal yarn in a flat knitting machine, capable of retaining the terminal yarn produced when changing a yarn to other yarn so as to surely be inserted into a knitted fabric and smoothly carrying out the subsequent knitting action and a method for treating the terminal yarn. SOLUTION: A first brush member 40 rotating and standing to a yarn A fed out from a yarn-supplying port 13 is interposed and the yarn is cut by a yarn-breaking means 17 between the first brush member 40 and the yarn supplying port 13 and a cut terminal yarn A' is held by the first brush member 40 and reversed and transferred so as to face the cut yarn A' to a space (s) of a needle bed by further rotating the brush member and the terminal yarn A' held by the first brush member is delivered to a second brush member 46 advanced on to tip parts of the needle beds and the terminal yarn A' is moved along the tip parts of the needle beds and a knitting needle 5 is successively raised and moved to a tuck position by cam action of a carriage. Thereby, the terminal yarn A' is retained so as not to rise upward by the knitting needle 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end yarn processing apparatus and method for a flat knitting machine.

[0002]

2. Description of the Related Art End yarn processing in a conventional flat knitting machine for knitting a collar, gloves, or the like of a polo shirt has been performed automatically or manually by a dedicated device. As an example of the dedicated device, the yarn fed from the yarn feeder moved to the right end side of the needle bed during knitting is cut by a yarn cutting blade in a state where the yarn is gripped by a clamp of a yarn returning device, and the cut yarn is cut. While holding the end of, the thread return device moves to the left to invert the thread above the gap between the needle beds, and then releases the thread by releasing the clamp. At this time, it is known that a yarn returning device is used in which an end yarn is laid on a gap between the needle beds by an air flow blown from an air nozzle.

[0003]

In the above-described conventional yarn turning device, the position of the end yarn extending while fluctuating by the air flow over the gap between the needle beds is unstable.
When the knitting is subsequently performed by reciprocating the carriage, the carriage floats up and may not be inserted into the knitted fabric. In this case, the end yarns that have protruded outside have a poor appearance, and must be manually processed after knitting of the collar. For this reason, there was a drawback that end yarn processing could not be performed reliably and stably. In addition, it is inefficient to perform all the processing of the end yarn by hand, and it can be said that the operation is very troublesome.

An object of the present invention is to restrain end yarns generated when a yarn being knitted is switched to another yarn so as to be surely inserted into a knitted fabric, so that subsequent knitting operation can be smoothly performed. It is an object of the present invention to provide an end yarn processing apparatus and a processing method for a flat knitting machine.

[0005]

According to a first aspect of the present invention, there is provided an end yarn processing apparatus for a flat knitting machine, comprising: a pair of front and rear support plates arranged on the left and right sides of a machine frame; And a carriage for moving a number of knitting needles arranged in the needle bed is provided on each of the needle beds so as to freely slide in the left-right direction, and passes between the teeth of the needle bed. A plurality of yarn feeders arranged on the imaginary line are freely provided to the carriage, and a horizontal side provided with a plurality of yarn cutting means for cutting the yarn fed from the yarn feeder outside one end of one needle bed in a timely manner. In a knitting machine, a first brush member is rotatably provided in a bearing member fixed to one end outside the needle bed in a vertical plane corresponding to a gap between the needle beds, and the first brush is operated by a motor device. The member is provided to be able to rotate forward or backward within a predetermined angle range, A yarn feeder that moves outward on one end side of the needle bed when a second brush member is provided on the carriage so as to be freely retractable on and out of the tooth gap by driving means, and when the yarn is switched during knitting by reciprocating movement of the carriage. A first brush member rotated and raised by the motor device intervenes with the yarn drawn out from the yarn device, and the yarn that is substantially tensioned between the first brush member and the yarn feeder is cut by the yarn cutting means. The brush member of the first brush member further rotates the brush member in a state where the end yarn is gripped by the brush piece of the first brush member, and reversely moves so as to face the gap between the needle beds, and the end yarn held by the first brush member is toothed. After passing the end thread along the tooth gap by passing it to the second brush member that has advanced to the mouth, the carriage that moves from one end outward to the other end while leaving the yarn feeder at that position. The knitting needles are sequentially moved upward to the tack position by the action of the needle, so that the end yarns are positioned below the intersections of the respective knitting needles and held so as not to float upward. It is characterized by comprising.

According to a second aspect of the present invention, there is provided a method for treating end yarns, wherein a pair of front and rear needle beds are opposed to a chevron-shaped support plate disposed on the left and right sides of a machine frame. A carriage for moving a number of knitting needles arranged in the needle bed is provided on the needle beds so as to freely slide in the left-right direction, and is arranged on an imaginary line passing between the teeth of the needle bed. A plurality of yarn feeders are provided so as to be able to be entrained to the carriage,
A plurality of yarn cutting means for cutting the yarn fed from the yarn feeder outward at one end side of one of the needle beds in a timely manner; and a motor device within a vertical plane corresponding to the gap between the needle beds within a predetermined angle range. Knitting by reciprocating movement of the carriage using a flat knitting machine provided with a first brush member that can be rolled or reversed and a second brush member that can be moved back and forth on the tooth gap by a driving means on the carriage. In the case where the yarn is sometimes switched, the first brush member rotated and raised by the motor device is interposed with respect to the yarn fed from the yarn feeder moving outward on one end side of the needle bed. The yarn which has been tensioned substantially between the yarn feeder and the yarn feeder is cut by a yarn cutting means. Then, the cut end yarn is gripped by the first brush member and the brush member is further rotated to remove the gap between the needle beds. To face After reversing and transferring the end yarn held by the first brush member to the second brush member that has advanced onto the tooth gap so that the end yarn is along the tooth gap, the yarn feeder is left at that position. By sequentially moving the knitting needles up to the tack position by the cam action of the carriage moving from one end side outward to the other end side, the end yarns are positioned below the intersection of the respective knitting needles and upward. It is characterized in that it is held so as not to float.

[0007]

(1) When the yarn is switched at the time of knitting, when the carriage moves to the other end (left side) and changes direction, the first brush member in the posture lying down at the standby position is used. Rotated by a motor device to a standing posture, (second)
The cutting blade of the yarn cutting means is moved upward. (2) When the carriage follows the (first) yarn feeder and moves outward at one end (right) side of the needle bed from the state of (1), the first brush member controls the yarn fed from the yarn feeder. Intervening, the cutting blade descends by the fixed cam of the carriage, and cuts the thread that is substantially tensioned between the first brush member and the yarn feeder. (3) Next, the carriage further moves outward and stops, and the first brush member further rotates to the reversing position while holding the end thread. Then, the end thread gripped by the first brush member is transferred to the second brush member that has advanced onto the tooth gap and is made to follow the tooth gap. (4) Each knitting needle sequentially moves up to the tack position by the cam action of the carriage moving from the outside on one end to the other end while leaving the (first) yarn feeder at that position. Thus, the end yarn is positioned below the intersection of the respective knitting needles and is held so as not to float upward. This state is referred to as “end yarn processing” in the present invention. (5) When the carriage reaches the other end, the first brush member is returned to the standby position by operating the motor device, and the second brush member is moved backward by operating the driving means. Next, the carriage is moved to one end (without performing the knitting motion). At this time, the knitting needle is held at the tack position. (6) When the carriage changes direction at one end, the (second) yarn feeder that supplies another yarn selected by the control device of the weft knitting machine is entrained and moves to the other end. Then, when another yarn whose one end is clamped by the (third) yarn cutting means is started to be knitted above the end yarn, the first brush member in the posture folded down at the standby position is again brought upright by the motor device. Then, it is in a state of intervening in another thread. (7) When the carriage reaches the other end, the cutting blade of the (first) thread cutting means moves upward. Then, the carriage moves one end side outward without performing the knitting motion while leaving the (second) yarn feeder at that position. (8) The cutting blade descends by the fixed cam of the carriage that moves to one end side, and cuts another thread between the first brush member and the (third) thread cutting means. Thereafter, returning to the operation described in the above (3), the processing of the end yarn of another yarn is performed, and subsequently, the normal knitting operation is continuously performed.

According to the end yarn processing apparatus and the processing method of the flat knitting machine, the end yarn generated when the yarn being knitted is switched to another yarn is restrained and held so as to be surely inserted into the knitted fabric. be able to. As a result, the knitting operation of the flat knitting machine can be performed smoothly and stably, which contributes to an improvement in product yield.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a main part of a flat knitting machine, FIG. 2 is an exploded perspective view of an end yarn processing device, FIG. 3 is an explanatory view showing positions of a carriage with respect to a needle bed during knitting and end yarn processing, 5 to 14 are explanatory diagrams sequentially showing states (a) to (j) in which end yarns are processed, and FIG. 15 is a diagram in which the end yarns face the gap of the needle bed and the knitting needle is tacked. FIG. 9 is an enlarged view of a main part of FIG. 8 showing a state where the position is set.

In FIG. 1, mountain-shaped support plates 1, 1 are disposed on the left and right of a flat knitting machine above a machine frame (not shown), respectively. Reference numerals 2 and 2 denote a pair of front and rear horizontally long needle beds provided along opposing oblique sides 1a and 1a of each support plate 1. On one end side of each needle bed 2, on the right side R as viewed from the front, a base 3 is provided.
3 is continuously provided on the needle bed 2. On those needle beds 2
A well-known carriage (not shown) for vertically moving a large number of knitting needles 5 arranged in the needle bed 2 vertically by a cam (not shown) is provided slidably in the left-right direction. As shown in FIG. 3, a linear rail 11 is provided on a bracket 10 fixed to each support plate 1 so as to extend along a gap s between the teeth of the needle bed 2, and is placed on an imaginary line passing through the gap s. A plurality of, here two independent yarn feeders 13 arranged
A slide 12 having a thread supply port 15 and a slide 14 having a yarn feeder 15 are provided on the rail 11 so as to be freely slidable. The slides 12 and 14 are provided to be freely entrained on the carriage.

Further, one of the bases 3 has a yarn feeder 13, 1
A plurality of, here first to fourth, yarn cutting means 16 to 19 for cutting the yarn unwound from 5 in a timely manner are arranged in a vertical direction. The first thread cutting means 16 pushes up and raises the cutting blade 16a by a solenoid (not shown), and lowers the cutting blade 16a by a fixed cam of the carriage at the time of movement to cut the yarn by the cooperative action with the receiving blade 16b. It is provided so that the end of the yarn located on the opposite side to 16b can be pinched. The basic configuration of the flat knitting machine described above is known.

An end yarn processing apparatus 25 according to an embodiment of the present invention is attached to the flat knitting machine. That is, FIG.
As shown in FIG. 2, a motor device 27 composed of a stepping motor is mounted horizontally on a bracket 26 fixed to the right support plate 1, and a drive pulley 28 is fixed to an output shaft 27a of the motor device 27. Similarly,
On the bracket 29 fixed to the support plate 1, intermediate pulleys 30 and 31 are attached at small intervals in the vertical direction to shafts 32 and
33 allows free rotation. A bearing member 35 is fixed to the upper end surface 3a of the other base 3 near the needle bed 2, and a crankshaft 37 is rotatably inserted into a shaft hole 36 formed in the front-rear direction of the bearing member 35, A driven pulley 38 is fixed to the shaft end. Reference numeral 40 denotes a first fixed and attached to a support portion 39 provided on a lateral arm 37a of the crankshaft 37.
It is a brush member. A large number of brush pieces 41 are vertically planted on the brush member 40. Reference numeral 42 denotes a timing belt extended over the driving pulley 28, the intermediate pulleys 30, 31 and the driven pulley 38.

A lever 45, which is swingable by driving means (not shown) such as a solenoid, is provided above the carriage, and a second brush member 46 attached to the end of the lever 45 is connected to the clearance s. It is allowed to advance upward or retreat to the carriage side so as to face upward.

The driven pulley 38 and the crankshaft 37 are rotated via the timing belt 42 by the drive rotation of the drive pulley 28 of the motor device 27, and the first brush member 40 integrally attached to the crankshaft 37 is rotated. Is provided in the vertical plane corresponding to the gap s of the needle bed 2 so as to be freely rotatable forward or backward within a predetermined angle range, and the second brush member 46 is provided on the carriage so as to be able to advance and retreat over the tooth gap by driving means.
The end yarn processing device 25 provided with is provided.

Next, an end yarn processing apparatus having such a configuration.
25 shows the operation of processing the end yarn in the flat knitting machine based on the drawings.
Will be described. (1) When the carriage moves to the left end L and changes direction
A first brush member in a posture prone at the standby position (a)
40 is rotated by the motor device 27 so as to be in an upright posture,
The cutting blade 17a of the second yarn cutting means 17 is moved upward.
(FIG. 5). (2) The carriage moves the first yarn feeder 13 from the state of (1).
When the yarn is fed and moved to the outside of the right end R of the needle bed 2, the yarn feeding
The first brush portion for the yarn A being unreeled from the mouth 13
The material 40 intervenes. Then, the fixed cam of the carriage
The cutting blade 17a descends to feed the first brush member 40.
The thread A, which is almost tensed between the thread 13 and the thread 13, is cut (see FIG.
6). (3) Then, the carriage is further moved to the outer position R.₁Until
The first brush member 40 moves and stops, and the first brush member 40 brushes the end yarn A '.
In the state of being gripped by the strip 41, further move to the reversal position (
To rotate (FIG. 7). Then, the first brush member 40
The end yarn A 'gripped by the above advances into the gap s between the teeth.
Is transferred to the second brush member 46 so as to follow the tooth gap.
Is done. (4) Each of the knitting needles 5 moves the first yarn feeder 13 to that position.
Leave the right end outside position R ₁Move to the left end L from
To the tack position due to the cam action of the carriage
Moving. Thereby, the end yarn A 'is connected to each knitting needle 5
.. Are located below the intersection of and rise upward
It is held so as not to bend (FIG. 8). (5) When the carriage reaches the left end L, the first brush
The reciprocating member 40 is turned over by the operation of the motor device 27.
It returns from (b) to the standby position (a) (FIG. 9). Ma
Further, the second brush member 46 is moved backward by the operation of the driving means.
Move. (6) Then, move the carriage to the right (without knitting motion).
Move to end R. At this time, the knitting needles 5
It is held in the lock position. (7) When the carriage changes direction at the right end R,
Another thread B selected by the control device (not shown) of the knitting machine
The second yarn feeder 15 for supplying
You. Then, one end is held by the third yarn cutting means 18.
When the yarn B is started to be knitted above the end yarn A ', the standby position
The first brush member 40 in the posture laid down in (a) is again
It is set in the upright posture by the motor device 27 and intervenes in the yarn B.
State (FIG. 10). (8) The first thread cutting hand when the carriage reaches the left end L
The cutting blade 16a of the step 16 moves upward (FIG. 11). Cap
The ridge is knitted while leaving the second yarn feeder 15 in that position.
Position R outside right end without exercise₁Move up to. (9) Upward by the fixed cam of the carriage that moves to the right end R
Since the cutting blade 16a descends, the first brush member 40
The yarn B between the third yarn cutting means 18 is cut (FIG. 1
2). (10) Thereafter, returning to the operation described in the above (3), the yarn B
(FIG. 14), and the carriage is
By reciprocating in the normal knitting drive range shown in FIG.
Continuous knitting.

In the weft knitting machine of the present invention, the end yarn processing apparatus and the processing method can restrain and hold the end yarn generated when the yarn being knitted is switched to another yarn so as to be surely inserted into the knitted fabric. It is. Thereby, the knitting operation of the flat knitting machine can be performed smoothly and stably, and the product yield is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a flat knitting machine.

FIG. 2 is an exploded perspective view of an end yarn processing device.

FIG. 3 is an explanatory diagram showing a position with respect to a needle bed at the time of knitting of a carriage and at the time of end yarn processing.

FIG. 4 is an operation diagram of a carriage.

FIG. 5 is an explanatory diagram showing a state (a) in which end yarn processing is performed.

FIG. 6 is an explanatory diagram showing a state (b) in which end yarn processing is performed.

FIG. 7 is an explanatory view showing a state (c) in which end yarn processing is performed.

FIG. 8 is an explanatory diagram showing a state (d) in which end yarn processing is performed.

FIG. 9 is an explanatory diagram showing a state (e) in which end yarn processing is performed.

FIG. 10 is an explanatory view showing a state (f) in which end yarn processing is performed.

FIG. 11 is an explanatory diagram showing a state (g) in which end yarn processing is performed.

FIG. 12 is an explanatory view showing a state (h) in which end yarn processing is performed.

FIG. 13 is an explanatory view showing a state (i) in which end yarn processing is performed.

FIG. 14 is an explanatory diagram showing a state (j) in which end yarn processing is performed.

FIG. 15 is an enlarged view of a main part of FIG. 8 showing a state where the knitting needle is set to a tack position with the end yarn facing the gap of the needle bed;

[Explanation of symbols]

A → Yarn A ′ → End Yarn B → Another Yarn B ′ → Another Yarn End Yarn 1 → Support plate 2 → Needle bed 3 → Base 5 → Knitting needle s → Gap 11 → Rail 13,15 → Yarn feed port 12, 14 → slide 16 → first thread cutting means 16a → cutting blade 16b → receiving blade 17 → second thread cutting means 17a → cutting blade 17b → receiving blade 18 → third thread cutting means 19 → fourth thread cutting means R → one end Side (right end) R ₁ → Position outside right end L → Other end side (left end) 27 → Motor device 28 → Drive pulley 37 → Crank shaft 38 → Driven pulley 42 → Timing belt 40 → First brush member 41 → Brush piece 45 → Lever 46 → Second brush member

Claims (2)

[Claims] 1. A pair of front and rear needle beds are attached to a mountain-shaped support plate disposed on the left and right sides of a machine frame so as to face each other, and a carriage for moving a large number of knitting needles arranged in the needle beds on the needle beds is provided. A plurality of yarn feeders are provided on the carriage so as to be freely slidable in the left and right direction and arranged on an imaginary line passing between the teeth of the needle bed. In a flat knitting machine provided with a plurality of yarn cutting means for cutting the yarn unwound from a yarn end in a timely manner, a first brush member is attached to a bearing member fixed to one end outside of the needle bed in a gap between the needle beds. The first brush member is provided so as to be freely rotatable in a corresponding vertical plane, and the first brush member is provided so as to be able to rotate forward or backward within a predetermined angle range by the operation of a motor device. A second brush member, wherein the carriage In the case where the yarn is switched at the time of knitting by reciprocating motion of the needle, the first brush member rotated and raised by the motor device is interposed with respect to the yarn fed from the yarn feeder moving outward on one end side of the needle bed, The thread which has been substantially tensioned between the first brush member and the yarn feeder is cut by a yarn cutting means, and the brush member is further rotated while the cut end yarn is gripped by the first brush member, and the needle is rotated. After reversing movement so as to face the gap between the floors, the end thread held by the first brush member is transferred to the second brush member that has advanced onto the tooth gap, and the end thread is arranged along the tooth gap.
The knitting needles are sequentially moved up to the tack position by the cam action of the carriage moving from one end outside to the other end while leaving the yarn feeder at that position, so that the end yarn intersects each knitting needle. An end yarn processing apparatus in a flat knitting machine, wherein the end yarn processing apparatus is configured to be positioned below a portion and held so as not to float upward. 2. A pair of front and rear needle beds are attached to a mountain-shaped support plate disposed on the left and right sides of a machine frame in a facing manner, and a carriage for moving a large number of knitting needles arranged in the needle beds on the needle beds is provided. A plurality of yarn feeders provided slidably in the left-right direction and arranged on an imaginary line passing between the teeth of the needle bed are provided so as to be able to be entrained to the carriage, and the yarn feeders are provided outward on one end side of one of the needle beds. A plurality of thread cutting means for cutting the thread unwound from the first timely, and a first brush member rotatable forward or backward within a predetermined angle range by a motor device in a vertical plane corresponding to the gap between the needle beds. A flatbed knitting machine having a carriage provided with a second brush member which can be advanced and retracted on the tooth gap by a driving means, and when the yarn is switched at the time of knitting by reciprocating movement of the carriage, From the yarn feeder that moves outward on one side The first brush member rotated and raised by the motor device is interposed with the output yarn, and the yarn that is substantially tensioned between the first brush member and the yarn feeder is cut by the yarn cutting means. With the cut end yarn held by the first brush member, the brush member is further rotated to reversely move so as to face the gap between the needle beds, and the end yarn held by the first brush member is placed on the tooth gap. After being transferred to the advanced second brush member and causing the end yarn to be along the tooth gap, the carriage is moved from one end side outward to the other end side while leaving the yarn feeder at that position. A weft knitting machine characterized in that the knitting needles are sequentially moved upward to a tack position so that the end yarns are positioned below the intersection of the respective knitting needles so as not to float upward. Of the end yarn in the above.