JP2631923B2 - Knitting device for tubular knitted fabric 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 method and an apparatus for knitting a tubular knitted fabric such as a sock or a glove using a flat knitting machine.

[0002]

2. Description of the Related Art When knitting a tubular knitted fabric such as a sock or a glove, a circular knitting machine in which knitting needles are arranged to be able to move up and down on a peripheral surface of a cylindrical cylinder is used. It is common practice to feed a knitting needle while controlling the elevation of the knitting needle with a carriage to knit a tubular knitted fabric.

[0003] However, when knitting a tubular knitted fabric by the circular knitting machine, the number of wales and the circumference of the tubular knitted fabric are determined by the number of knitting needles or the diameter of the cylinder. There is a problem that it is necessary to provide various circular knitting machines corresponding to the knitting of different circumferences. Further, when a cylindrical knitted fabric having a long perimeter is formed and used, there is a problem that the diameter of the cylinder of the circular knitting machine increases, and the entire energetic circular knitting machine increases in size.

Therefore, in order to solve such a problem, as proposed by the present applicant, a needle bed in which a large number of knitting needles are juxtaposed is disposed in a pair in front and rear with the teeth of the knitting needles abutting each other. There is a type in which a tubular knitted fabric is knitted by a flat knitting machine. The knitting of the tubular knitted fabric by the flat knitting machine is performed by feeding yarn to the knitting needles of the needle bed during the reciprocating movement of the carriage on the needle bed and knitting the knitted fabric on one side, and when the carriage returns. Both ends were joined by alternately repeating the knitting course of knitting the knitting fabric of the one side surface and feeding the knitting needles of the other needle bed in a state of continuous knitting to knit the knitting fabric of the other side surface. This is to knit a tubular knitted fabric.

[0005]

When knitting a tubular knitted fabric with a flat knitting machine, the knitting is performed by the reciprocation of the carriage, and thus the tension of the knitting yarns at both ends of the knitted fabric where reciprocation is switched. However, there is a problem that the tension of other portions is not equal, and the stitch size of this portion is not uniform.

That is, when the carriage is switched from the forward movement to the backward movement and the yarn is supplied from the knitting needle of one needle bed to the knitting needle of the other needle bed, the knitting yarn acting on the knitting needle supplied in the forward movement is changed. The direction of the tension changes from a direction perpendicular to the sliding direction of the knitting needle to a direction along the sliding direction of the knitting needle,
As a result of pulling out the knitting needle in this portion, the size of the loop in this portion becomes uneven.

The present invention has been proposed in view of the above problems, and has as its object to provide a tubular knitted fabric having a uniform stitch by a flat knitting machine.

[0008]

To achieve the above object, a knitting apparatus for a tubular knitted fabric in a flat knitting machine according to the present invention comprises:
A shape in which needle beds with multiple knitting needles arranged side by side
Needle knitting machine in a flat knitting machine
By moving the knitting needle back and forth on the
Needle bed of the front part of the knitted fabric, the other needle
Bed with knitted fabric on the back side joined at both ends
And a carriage for knitting a cylindrical knitted fabric.
Invert the rows and knit from one side of the tubular knitted fabric to the other
Knitting on the side where knitting is finished when knitting the fabric by switching
The number of knitting needles that lock the stitches at the side
At least knitting fabric knitting with the other knitting needle facing the knitting needle
Engages the rear end of the knitting needle so that it does not advance.
Knitting needle advance prevention means that regulates the sliding of the knitting needle
And a knitting needle advance prevention means on the carriage.
To release the engagement between the knitting needle and the knitting needle advance prevention means.
The control mechanism is provided on the leading side of the knitting cam.
Things.

Further , the knitting needle advance prevention means prevents the knitting needle from advancing.
It is composed of a swingable lock plate that is biased in the stopping direction.
The control mechanism swings the lock plate.
Composed of wake-up cam, selective passage cam and delivery cam
The lock plate of the knitting needle advance prevention means
The cam groove that penetrates the rear end of the knitting needle
Is also a feature. In addition, the part near the rear end of the knitting needle
Acts on knitting needle advance prevention means that engages to restrict sliding of the knitting needle
Opening means for releasing the engagement between the knitting needle and the knitting needle advance prevention means
Soleno with steps or opening means fixed to the frame
Direction to allow the needle to advance the lock plate by operating the id
It is also one of the features that it is configured to swing.

[0010]

The knitting needle of the front needle bed knits the front part of the tubular knitted fabric and the knitting needle of the rear needle bed knits the rear part of the tubular knitted fabric. Shall be. The carriage travels on the upper surface of the front needle bed to knit the front part of the tubular knitted fabric with the knitting needles of the front needle bed, and when the knitting needles are moved up and down, the loops at both ends of the knitted fabric are latched. The operation of the knitting needle advance prevention means provided on the knitting needle is released by the control mechanism, and the knitting needle is moved up and down by the carriage.

Next, when the carriage in which the rear surface of the tubular knitted fabric is knitted by the knitting needles of the rear needle bed is going back, the knitting needles are provided on the knitting needles which are hooked at both ends of the knitted fabric by the knitting needle advance prevention means. The knitting needle advance prevention means prevents the knitting needle from coming off due to a change in the tension and direction of the knitting yarn acting on the knitting needle. As a result, the knitting needle is not pulled out and the knitted fabric is formed, so that the loops of the tubular knitted fabric are prevented from being irregular in size.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of an essential part of a flat knitting machine having a needle bed arranged in a pair of front and rear parts with a part cut away.
In the figure, reference numeral 1 indicates the entire needle bed portion of this flat knitting machine.

This needle bed portion 1 is provided with needle beds 3.3 on the upper surface of a frame 2 which is arranged in a substantially "C" shape with the tips abutting each other.
A large number of knitting needles 4, 4... The knitting needles 4, 4,... Are arranged above each needle bed 2 and are controlled by a cam group (knitting control cam) 6 mounted on a carriage 5 which runs simultaneously and in the same direction by a connecting rod (not shown). Elevation is controlled.

A carriage 5 having the structure shown in FIG. 2 is provided on the upper surface of each of the needle beds 3 and 3, and the cam group 6 includes a top mountain cam 7, a middle mountain cam 8, a steep cam 9 and the like.

Each of the knitting needles 4 has a hook 12 provided at the upper end of a stem 10 so that a latch 11 can be swung. A tenzan cam 7 and a Nakayama cam 8 are provided near the rear end of the stem 10. Bat 1 sandwiched between the bat 1 to raise and lower the knitting needle 4
3 are protruding respectively. And each needle bed
(Knitting Machine Main Body) A knitting needle advance prevention means for restricting sliding of the knitting needle 4 is provided on a rear end portion 10a of the knitting needle 4 which locks a loop near a side end of the knitted fabric 14 knitted by 3.3. A control mechanism 16 for controlling the operation of the knitting needle advance prevention means 15 is provided on the carriage 5.

The knitting needle advance prevention means 15 is shown in FIGS.
As shown in FIG. 3, three of the knitting needles near the side ends of the knitting needles 4, 4... Knitting needle 4
A lock plate 17 having a long slot-like cam groove 17a penetrating the rear end of each of the rear ends 4 and 4 is pivotally supported on the lower end surface of the frame 2 so as to be swingable. The plate 17 is pressed and urged by the helical spring 18 so that the angle θ between the center line O and the rear end portion 10a of the knitting needle 4 becomes an obtuse angle, and the knitting needle 4 can be lowered but raised. It is formed as a kind of "one-way clutch" that cannot be performed.

Further, each lock plate 17 is provided with the opening means 1.
9 allows the helical spring 18 to swing against the tension. The opening means 19 includes a solenoid 21 fixed to the frame 2 via a support bracket 20, and an “L” -shaped operation lever 24 connected to an output shaft 22 of the solenoid 21 via a link 23.
The distal end of the operation lever 24 is configured to contact the lower end of the lock plate 17.

Reference numeral 25 in the figure denotes a spring for returning the output shaft 22 of the solenoid 21 to the extending direction.

The control mechanism 16 for controlling the operation of the knitting needle advance prevention means 15 is caused by a raising cam 27 having a cam surface 26 which is brought into contact with an upper end portion 17b of the lock plate 17, and a raising cam 27 which is raised by the lock plate 17. When the lock plate 17 is carried in an inclined state by being pressed and urged by the helical spring 18, the state is maintained. The selective passage cam 29 and the two cams 2 in which the thickness of the front end portion 28 is reduced in order to allow the passage in the state as it is.
Transfer cam 3 slidably provided between the transfer cams 7 and 29
0.

The position at which the control mechanism 16 of the knitting needle advance prevention means 15 is attached to the carriage 5 is such that the transfer cam 30 is located on the upper side in the traveling direction of the carriage 3 from the stair cam of the other carriage (shown in the drawing). Provided.

Next, the case of knitting a tubular knitted fabric with the needle bed portion 1 of the flat knitting machine configured as described above will be described. Here, the needle beds 3.
3, the knitting needle 4 of the front needle bed 3 is
Of the tubular knitted fabric 14 is knitted by the knitting needles 4 of the rear needle bed 2, respectively.

When the carriage 5 of FIG. 2 moves the upper surface of the front needle bed 3 to the left in the figure to knit the front part 14a of the tubular knitted fabric 14 with the knitting needles 4 of the front needle bed 3, the knitting needles 4 When the bat 13 is moved up and down by the cam group 6 as indicated by a solid arrow to the right and fed from a feeder (not shown), the front portion 14a of the tubular knitted fabric 14 is knitted.

At this time, the upper end portion 17b of the lock plate 17 which is inclined by the urging force of the spiral spring 18 and holds the knitting needle 4 causes the cam surface 26 as shown by the imaginary line in FIG. It is transferred from the transfer cam 30 to the selection passage cam 29 while maintaining the state. Here, when the lock plate 17 is raised and raised on the cam surface 26, the height of the upper end portion 17b of the lock plate 17 increases, and the raised state is maintained even when the lock plate 17 is passed to the selective passage cam 29. Therefore, the knitting needle 4 can be moved up and down freely.

When the knitting needle 4 is lifted so that the butt 13 is sandwiched between the top mountain 7 and the middle mountain cam 8 constituting the knitting cam, the rear end 10a of the stem 10 comes out of the cam groove 17a of the lock plate 17 and comes out. It is in a state where it can be raised and lowered freely, and there is no problem with knitting. Then, after being yarn feeding to the hook 12 at position A in FIG. 2, is lowered needle 4, further depressed in degrees mountain cam 9 for setting a time the cam of the trailing end portion 10a the lock plate 17 of the stem 10 It is inserted into the groove 17a, and it can be inserted and is kept in a state where it cannot be pulled out.

In this way, the carriage 5 passes and the knitting needles 4 of the front needle bed 3 cause the front portion 14a of the tubular knitted fabric 14 to move.
Is completed, the running direction of the carriage 5 is reversed, and the knitting needles 4 of the rear needle bed 3 form the rear surface portion 1 of the tubular knitted fabric 14.
When the knitting 4b is to be knitted, the knitting needles 4 of the front needle bed 3 are not moved up and down, and the trajectory of the lock plate 17 with respect to the carriage 5 is the trajectory indicated by the two-dot chain line Y facing left in FIG.

That is, the lock plate 17 for holding the knitting needles 4 of the front needle bed 3 in a retaining shape is provided by the spiral spring 1.
8, the height of the upper end portion is low because of being urged in an inclined manner by this.
Since the knitting needle 4 passes below the thin-walled portion, the knitting needle 4 remains held in a retaining shape. Therefore, the rear needle bed 3
The even needles that needle 4 is yarn feeding to 4 is pulled by the stitch cam, thereby not be or needle 4 is pulled out held by the lock plate 17 of the front needle bed 3, needle 4 The loops of the tubular knitted fabric due to the pulling out are prevented from being irregular.

Then, yarn is supplied to the knitting needle 4 of the rear needle bed 3 at the position B in FIG.
After the rear surface portion 14b is knitted, the lock plate 17
Is raised by the transfer cam 30 and the upper end portion 17b is raised.
When the knitting needle 4 is lifted up and down freely by releasing the retaining action, the knitting of the rear needle bed 3 by the knitting needle 4 has already been completed. The loop of the knitting needle 4 held by the lock plate 17 has no adverse effect.

When changing the circumference of the tubular knitted fabric,
The solenoid 21 of the opening means 19 is operated to bring the lock plate 17 into the raised state, and the knitting needles 4
4 is raised to bring the rear end 10a of the stem 10 out of the cam groove 17a, and then the knitting needle advance prevention means 1
The peripheral length of the tubular knitted fabric can be easily changed only by moving the 5 to a desired position. Opening means
The 19 solenoids 21 move in one direction as in the above embodiment.
Of the knitted fabric, for example, the heel part of the tubular knitted fabric of socks
Instead of the cam surface 26 at the time of folded knitting as in the case of knitting
Act to cause the lock plate 17
You can do it.

Further, in the above embodiment, the knitting needle advance prevention means 15 is not provided on one knitting needle 4 on the side edge portion of the knitted fabric 14, but this is provided on the front and rear needle beds 3.3. Since the distance between the hooks 12 of the knitting needles 4 is slightly widened, the knitting needle of the relevant portion is advanced to adjust the distance of the knitting yarn passed between the hooks to the yarn length of another loop. Although the yarn length can be shortened, the knitting needle is prevented from being advanced to one knitting needle on the side edge portion of the knitted fabric 14 when the hook between the front and rear knitting needles is sufficiently short due to the structure of the flat knitting machine. Preferably, means 15 are provided.

In addition, in the above-described embodiment, the control mechanism for swinging the lock plate of the knitting needle advance prevention means is activated to be constituted by the cam 27, and the selective passage cam 29 and the transfer cam 30. Instead, each of the lock plates may be rocked separately or at a time by a push / pull actuator such as a solenoid.

Further, the knitting needle advance prevention means is not limited to a structure in which a through hole is provided in the lock plate, but may be a structure in which the rear end of the knitting needle is held by a one-way clutch such as a ratchet.

[0032]

According to the present invention, as described above, the carriage is switched from forward to backward and the yarn is supplied from the knitting needle of one needle bed to the knitting needle of the other needle bed.
Even if the direction of the tension of the knitting yarn acting on the knitting needle supplied in the forward direction changes from a direction perpendicular to the sliding direction of the knitting needle to a direction along the sliding direction of the knitting needle, the knitting yarn on the side where knitting has been completed. Since the knitting needle at the end at the time of knitting tries to come out due to the changed tension is securely fixed by the knitting needle advance prevention means,
The changed tension does not affect the loops of the adjacent side knitting needles, and it is possible to prevent the loops from becoming uneven in size.

[0033] Thus, while taking advantage of the advantage of knitting a tubular knitted fabric with a flat knitting machine that a tubular knitted fabric having a different circumference can be easily knitted, a tubular knitted fabric having uniform stitch sizes can be used. There is an advantage that knitted fabric can be knitted.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a flat knitting machine with a part cut away.

FIG. 2 is a plan view of a cam group of a carriage used for a front needle bed, as seen through from above.

FIG. 3 is a plan view of a knitting needle portion for knitting an end of a tubular knitted fabric.

[Explanation of symbols]

3 ... Needle bed (knitting machine main body) 4 ... Knitting needle 5 ... Carriage 6 ... Knitting control cam 14 ... Knitted fabric 15 ... Knitting needle advance prevention means 16 ... Control mechanism

Claims (5)

(57) [Claims] 1. A flat knitting machine in which a plurality of knitting needles are arranged in a front-rear pair with a needle bed having a plurality of needles arranged side by side,
Move the knitting needle forward and backward by reciprocating on the needle bed .
With one needle bed, the knitted fabric of the front part is
A carriage for knitting a tubular knitted fabric in a state where the knitted fabric of the rear surface portion at both ends joined by square needle bed, Yellow
The progress of the carriage is reversed so that one side of the tubular
When knitting is switched to knitting and knitting is performed, knitting ends.
Lock the stitch at the side end of the knitted fabric on the side
Is at least the other knitting needle facing the knitting needle.
Near the rear end of the knitting needle so that it does not advance during knitting
Knitting needle advance prevention means that engages with a portion to restrict sliding of the knitting needle
Is provided on the knitting machine body, and the knitting needle is placed on the carriage.
The knitting needle acts on the advance prevention means and is
A knitting device for a tubular knitted fabric in a flat knitting machine, wherein a control mechanism for releasing the joining is provided on a leading side of the knitting cam . 2. A knitting needle advance prevention means for preventing advance of a knitting needle.
It consists of a rockable rock plate urged in the direction,
The control mechanism causes the rock plate to swing.
That it consists of a cam, a selective passage cam, and a delivery cam.
The tubular knitted fabric in the flat knitting machine according to claim 1,
Knitting equipment. The lock plate of the knitting needle advance prevention means is provided with a lock plate.
A cam groove is provided at the top of the knitting needle to pass through the back of the knitting needle.
3. The flat knitting machine according to claim 2, wherein
A knitting device for tubular knitted fabric. 4. The knitting needle slides by engaging with the rear end portion of the knitting needle.
Acting on the knitting needle advance prevention means for regulating the knitting needle and the knitting needle advance
The opening means for releasing the engagement with the prevention means is provided.
The knitting of a tubular knitted fabric in the flat knitting machine according to claim 1, wherein
Equipment. 5. A solenoid having an opening means fixed to a frame.
The lock plate in the direction that allows the needle to advance
The device according to claim 4, characterized in that it is configured to swing.
A knitting device for a tubular knitted fabric in the flat knitting machine according to the above.