JPH0730496B2 - Method and device for winding thread on reel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a knitting machine in which a weft yarn and a warp yarn are sequentially fed and knitted, and the weft yarn is wound on a reel used for feeding the weft yarn. The present invention relates to a winding method and a winding device.

[Conventional technology]

As a winding method and a winding device for this type of reel, for example, one having a structure disclosed in JP-A-51-127259 is known. This known invention is intended to detect the amount of the yarn on the yarn supplying bobbin side and adjust the withdrawal resistance of the yarn, and to detect the winding amount of the yarn by contacting the winding surface of the yarn supplying bobbin. The roller is moved (lowered) with a decrease in the winding amount of the yarn to gradually loosen the braking force, that is, the braking force to the yarn supplying bobbin, and the withdrawal of the yarn is performed as the winding amount of the yarn decreases. It is a method of adjusting so as to weaken the resistance. As a specific configuration, a lever that interlocks with the winding amount detection roller is provided, one end of the rod is supported by the lever, and a brake lever is connected to the lower end of the rod via a coil spring. One piece and the braking wheel attached to the support pole of the yarn feeding bobbin are frictionally engaged with each other, and the compression force of the coil spring is weakened as the winding amount detecting roller is lowered to reduce the frictional resistance between the braking wheel and the braking piece. It is configured to adjust the pullout resistance.

However, in the above-mentioned conventional example, since the reel on the winding side is always rotating at a constant number of rotations and the winding diameter is small at the beginning of winding the yarn, the withdrawal amount of the yarn from the yarn supplying bobbin is small. The number of yarns drawn out increases as the winding amount increases. In other words, the yarn feeding speed from the yarn feeding bobbin side is not constant, but changes rapidly depending on the winding amount on the reel side, and the change in the yarn feeding speed and the speed increase due to the reduction of the yarn feeding are overlapped to each other. The rotation speed on the side significantly changes, only the decrease in the thread is detected without considering this change in the rotation speed, and the friction resistance that adjusts the pressure contact between the braking wheel and the braking piece is effective in substantially reducing the thread withdrawal resistance. It cannot be adjusted.

Therefore, in winding the reel in the conventional example, the tension is different between the yarn wound first on the reel and the yarn wound afterwards, and the first half is loose and the latter half is tight, or the first is tight and the latter half is loose. In the former case, the thread wound afterwards comes to entangle between the previously wound threads, and entanglement occurs, and the thread is smoothly fed out when used on a knitting machine. If this is not done, there are problems that yarn breakage occurs and the meshes become uneven. Further, in the latter case, the amount of yarn wound on one reel is substantially slack, so that it is reduced by 10 to 20%, and there is a problem that workability in the knitting machine is deteriorated. In particular, in the case of a monofilament with a thin thread of No. 4 or less, if the tension of the thread itself becomes uneven and the tension becomes uneven, the above phenomenon is remarkably exhibited in the winding state, and it is substantially fine. In the case of the physical system, the fact is that the conventional method cannot be used for winding. In any case, the fact that the tensions of the yarns wound on one reel are different leads to a difference in the delivery of the yarns at the time of knitting, which leads to the problem that the knitting state varies.

Further, in the conventional example, since the yarn feeding speeds in the former half and the latter half are remarkably different, the former half must be wound at a speed that matches the latter half yarn feeding speed, and the rotation of the spindle to which the reel is mounted It must be able to hold the speed at a maximum of 750 rpm. Therefore, winding is performed at the same number of rotations from the first half to the second half, and particularly in the first half, there is a problem that the winding speed is extremely slow and the work efficiency is poor as a whole.

[Problems to be solved by the invention]

The present invention, as in the above-mentioned conventional example, has a problem that the tension of the yarn wound on the reel is different between the first half and the latter half of the yarn and that the yarn is entangled and entangled or the effective winding amount is reduced.
In addition, since the yarn feeding speed is remarkably different between the first half and the latter half, when the spindle for rotating the reel has a constant rotation speed, it is necessary to match the yarn feeding speed in the latter half, and the winding in the first half is extremely slow and the workability is poor. It is intended to solve the problem.

[Means for solving problems]

As a concrete means for solving the above problems, the present invention provides a yarn feeding drum between a yarn feeding bobbin rotatably supported and a reel on which a yarn is wound, and the yarn feeding drum uses the yarn feeding bobbin. The present invention provides a method for winding a yarn onto a reel, wherein the yarn is drawn from the reel at a substantially constant speed and is fed to the reel with a substantially constant tension, and the method is specifically implemented. As the device, a device for rotatably supporting the yarn supplying bobbin, a guide pulley for guiding the yarn drawn out from the yarn supplying bobbin, a driving device to which a reel is attached and which is rotationally driven for winding the yarn, A yarn feeding drum for feeding yarn to the reel, the driving means is provided with clutch means capable of adjusting torque, and the yarn feeding drum is arranged between the driving means and the guide pulley. It is those that provide the winding device of the yarn against the reel to symptoms. Since the yarn feeding drum rotates at a constant rotation speed, the yarn drawn from the yarn supplying bobbin is always drawn at a substantially constant yarn supplying speed regardless of the increase / decrease of the yarn, and at the same time, the yarn wound on the reel is also on the reel side. The yarn is always fed with a substantially constant tension regardless of the increase or decrease of the yarn, and the tension of the yarn does not change from the beginning of winding to the end of winding, so that the reel can always wind the yarn in an orderly manner.

〔Example〕

Next, the present invention will be described in more detail with reference to the illustrated embodiment. First, in the first embodiment of FIGS. 1 to 3, 1 is a box-shaped workbench, the workbench, and a frame on the workbench. The yarn feeding bobbin 3 is rotatably supported on the upper portion of the frame. In this case, the yarn supplying bobbin 3 may be supported so as to rotate with an appropriate load.
It suffices that the yarn is pulled out with a constant load regardless of the pulling amount of the yarn. A guide pulley 5 for guiding the yarn 4 is provided near the lower portion of the frame 2 and on the workbench 1, so that the yarn 4 is redirected by the guide pulley so that the yarn is guided substantially horizontally to the workbench 1. It has become.

Further, on the workbench 1, there is provided a drive means 7 to which the reel 6 is attached and which is rotationally driven. The drive means is generally called a winder, and a wheel 8 on which the reel 6 is placed is located on the workbench 1, the wheel 8 is attached to a drive shaft 9, and the drive shaft 9 is a work piece. Clutch means 10 is provided penetrating the upper surface of the table 1 and capable of adjusting the torque on the lower end side thereof. The clutch means 10 is provided inside the workbench 1, and the torque adjustment is performed by the clutch means 10.
It is carried out by a knob 11 provided at the lower end of 10 and is adjusted appropriately according to the thickness of the thread 4 wound on the reel 6, and the adjustment degree is calculated in advance by the thickness of the thread, and the adjustment position is based on that value. Is determined numerically.

The drive means 7 is driven via a V belt 13 by a motor 12 provided in the workbench 1, and the drive shaft 9 and the wheel 8 rotate at a predetermined rotation speed.

Further, a yarn feeding drum 14 for the yarn 4 is arranged on the workbench 1 and between the yarn supplying bobbin 3 and the driving means 7. The yarn feeding drum 14 is attached to a drive shaft 15 provided through the workbench 1, and the lower end of the drive shaft 15 is engaged with a clutch means 16 in the workbench 1, and the clutch means 16 is a lever. 17 and rod
The solenoid 19 engages with and disengages from the drive shaft 15 via the solenoid 18. A V-belt 13 is suspended between the drive shaft 15 and the yarn feeding drum 14 via the clutch means 16 so as to rotate at a constant rotation speed. That is, the driving means 7 and the yarn feeding drum 14 are simultaneously driven by the motor 12, so that they both rotate at the same rotational speed or the driving means 7 rotates at a slightly higher rotational speed. Configured. When the number of rotations is the same, the diameter of the reel 6 is made larger than the diameter of the yarn feeding drum 14 and the winding length on the reel 6 side is made large, so that the yarn 4 from the yarn feeding drum 14 becomes a predetermined value. It will be wound up with tension. Then, when the tension exceeds a predetermined value so that the tension of the yarn 4 becomes constant, the clutch means 10 slips on the drive means 7 side of the reel 6 side.

The wheel 8 on the side where the reel 6 is mounted and attached is provided with a detecting means 20 for detecting the winding amount of the yarn 4 on the reel 6 in an adjacent state. This detection means is
A crank-shaped arm 22 is attached to the upper part of the reel 21, and a free-rotating roller 23 is attached to the tip of the arm 22. The roller 23 extends from the peripheral opening of the reel 6 so as to face the inside. When the yarn wound around the yarn comes close to the final stage, it comes into contact with the wound yarn and is gradually pushed outward as the winding amount of the yarn increases, whereby the rod 21 is rotated by a slight angle. By the rotation of this tribute rod 21, the motor
The winding of the yarn is stopped by stopping the energization of 12 or by causing the clutch means 10, 16 to move away from the drive shafts 9, 15. In this case, an operating lever 24 is provided close to the tributary rod, and the operating lever 24 allows the clutch means 1 to operate.
0 and 16 can be operated at the same time, the operating lever 24 is manually operated to the operating side, and the detecting means 20 is operated to the inactive side. That is, when performing the winding operation, when the setting of the reel 6 and the suspension of the yarn 4 are completed, the operation lever 24 is manually set to the operating side to perform the winding operation, and the yarn wound on the reel 6 is wound. When the amount reaches a predetermined amount, it is detected and the detecting means 20 automatically stops the winding.

The second embodiment shown in FIG. 4 is the same as the first embodiment except that the tension adjusting means 25 is provided in place of the guide pulley 5 of the first embodiment. The description is omitted. The tension adjusting means of the embodiment is provided between the yarn feeding bobbin 3 and the yarn feeding drum 14, and a guide member 26 having a slit-shaped long hole is provided in a guide member 26 having an adjustable attachment angle. Movable guide wheel 28 and guide member that engage in the hole 27 and slide freely
It is composed of a fixed guide wheel 29 provided at the tip of 26 and a fixed guide wheel 30 provided between the guide member 26 and the yarn feeding drum 14. The guide member 26 is attached with its tip end side facing upward by a predetermined angle, and the movable guide wheel 28 is always dropped to the attachment base side by its own weight. A stopper member 31 for holding the yarn 4 by contacting the peripheral surfaces of the movable guide wheel 28 and the fixed guide wheel 30, that is, the surface on which the yarn 4 is guided, is provided at the dropped position. This stopper member is, for example, when the yarn is broken in the yarn feeding drum 14 or the reel 6 and tension is lost, and at the same time, the movable guide wheel 28 falls, whereby the stopper member 31 contacts the peripheral surfaces of the movable guide wheel 28 and the fixed guide wheel 30. The threads are held in contact with each other so as not to come off from the guide wheels. Reference numeral 32 is a traverse, which is driven in cycles with the rotation of the wheel 8.

[Work]

In the winding device of the invention having the above-mentioned configuration, in the first embodiment, the yarn 4 is simply hung on the guide pulley 5, and in the second embodiment, the fixed guide wheel 29 and the movable guide wheel 28 are detoured and fixed. The yarn 4 drawn out through the lower side of the guide wheel 30 is wound around the yarn feeding drum 14 a plurality of times (2 to 3 times) in each of the embodiments, and the end of the reel 6 is placed on the wheel 8. Wrap and fix. Next, operating lever 24
By operating the clutch means 10 and 16 at the same time, the drive shafts 9 and 15 rotate to rotate the wheel 8 and the yarn feeding drum.
14 rotates at the same time, and the yarn is wound on the reel 6. In this case, since the yarn feeding drum 14 rotates at a constant speed, the yarn is drawn from the yarn supplying bobbin 3 at a substantially constant speed. That is, since the yarn feeding drum 14 does not wind the yarn 4 and the winding diameter increases, the diameter of the yarn feeding drum 14 does not change at all, and the yarn feeding drum 14 rotates at a constant speed. It becomes almost constant from beginning to end. On the yarn supplying bobbin 3 side, it suffices that a predetermined braking force is simply applied, and the rotation of the yarn supplying bobbin 3 gradually increases from the start of drawing the yarn 4 as the yarn decreases. However, even if the yarn supplying bobbin rotates faster, the yarn withdrawing speed is substantially constant.

The yarn 4 drawn out by the yarn feeding drum 14 is immediately wound on the reel 6. In this case, the yarn feeding drum 14 for the reel 6
Since the yarn feeding speed from is substantially constant, the reel 6 rotates at a speed slightly faster than the yarn feeding drum 4 or
Due to the large winding diameter from the initial stage, a predetermined tension is generated in the yarn 4 between the yarn feeding drum 14 and the reel 6. In the drive means 7 on the reel 6 side, the clutch means
Since the yarn 10 is adjusted in advance to a predetermined torque according to the thickness of the yarn 4, the yarn 4 is wound while the clutch means 10 slips due to the tension. Therefore, the tension of the yarn 4 between the yarn feeding drum 14 and the reel 6 is always a substantially constant tension, and the yarn 4 wound on the reel 6 is evenly wound with a substantially constant tension from the winding start to the winding end. It will be.

When the yarn 4 wound with the substantially constant tension reaches a predetermined amount in this way, the roller 23 comes into contact with the wound yarn 4 and rotates with almost no load, and is gradually pushed out to the outside through the arm 22. By rotating the lever 21, the operating lever 24 is switched from the operating position to the non-operating position, and both clutch means 10 and 16 are simultaneously turned off by the switching, the wheel 8 and the yarn feeding drum 14 are stopped, and the winding operation is performed. finish. At this time, the yarn supplying bobbin 3 rotates slightly by inertia and the yarn 4
Although a predetermined braking force is applied to the yarn supplying bobbin itself, the yarn supplying bobbin is stopped by only feeding a small amount of yarn.

In the second embodiment, when the winding operation is completed or the yarn 4 is cut off in the middle, the extra yarn 4 is fed out from the yarn supplying bobbin 3, but the pulling output from the yarn feeding drum 14 side is generated. In order to eliminate the thread 4, the movable guide wheel 28 falls to the base side of the guide member 26, whereby the stopper member 31 comes into contact with the peripheral surfaces of the movable guide wheel 28 and the fixed guide wheel 30 to press the detachment of the thread 4,
The yarn 4 is only loosened between the yarn supplying bobbin 3 and the fixed guide wheel 29. Therefore, the end of the loosened thread 4 is in a free state, and entanglement with other portions is prevented.

〔The invention's effect〕

As described above, in the reel winding method according to the present invention, the yarn feeding drum is disposed between the yarn feeding bobbin and the reel, and the yarn feeding drum draws the yarn from the yarn feeding bobbin at a substantially constant speed. Since the yarn is supplied to the reel with a substantially constant tension, the yarn wound on the reel is performed with a substantially constant tension from the beginning to the end of the winding. It has an excellent effect that it is wound up in an orderly manner without any biting or entanglement.

Further, since the yarn is wound with a constant tension, the wound state is stable with a constant hardness, and the winding amount of the yarn is about 10 to 20% greater than that of the conventional example, and the knitting machine can When it is hung and used, the work efficiency is improved, and since the yarn is unreeled from the reel in a stable manner, the knot position is not displaced, and the net is prevented from being pulled.

Further, in the device of the present invention, a yarn feeding drum is arranged between the yarn supplying bobbin and the driving means to which the reel is attached, and the driving means is provided with a clutch means capable of adjusting torque.
The driving means and the yarn feeding drum are configured to be driven by a single motor. By disposing the yarn feeding drum, the yarn can be pulled out from the yarn feeding bobbin at a substantially constant speed. Since the yarn can be supplied to the reel with a substantially constant tension from the beginning of winding to the end of winding, an excellent effect that even in the case of a fine material system, the yarn can be wound evenly is exhibited.

[Brief description of drawings]

FIG. 1 is a schematic side view in which a part of a winding device according to a first embodiment of the present invention is cut away, FIG. 2 is a schematic plan view of only a main part of the device, and FIG. FIG. 4 is a schematic side view showing only a main part of the apparatus, and FIG. 4 is a schematic side view showing a part of the second embodiment by cutting away. 1 ... Workbench, 2 ... Frame 3 ... Feed bobbin, 4 ... Thread 5 ... Guide pulley, 6 ... Reel 7 ... Driving means, 8 ... Wheel 9,15 ... Drive shaft 10, 16 …… Clutch means 11 …… Knob, 12 …… Motor 13 …… V belt, 14 …… Yarn feeding drum 17 …… Lever, 18 …… Rod 19 …… Solenoid, 20 …… Detecting means 21 …… Tributary , 22 ...... Arm 23 ...... Roller, 24 ...... Operating lever 25 ...... Tension adjusting means 26 …… Guide member, 27 …… Guide hole 28 …… Movable guide wheel 29, 30 …… Fixed guide wheel 31 …… Stopper Material, 32 ... Trabus

Claims (6)

[Claims] 1. A yarn feeding drum is disposed between a rotatably supported yarn feeding bobbin and a reel on which the yarn is wound, and the yarn feeding drum draws the yarn from the yarn feeding bobbin at a substantially constant speed. A yarn winding method for a reel, wherein the yarn is supplied to the reel with a substantially constant tension. 2. The winding method according to claim 1, wherein a clutch means capable of adjusting torque is provided on the side for driving the reel, and slipping occurs when a certain tension is exceeded in winding the reel. 3. A tension adjusting means is provided between the yarn feeding drum and the yarn supplying bobbin to absorb an instantaneous change in the yarn supplying speed from the yarn supplying bobbin. The winding method described. 4. A means for rotatably supporting the yarn supplying bobbin,
The drive means comprises a guide pulley for guiding the yarn drawn out from the yarn supplying bobbin, a driving unit for mounting a reel to rotate the yarn for winding the yarn, and a yarn feeding drum for feeding the reel. A yarn winding device for a reel characterized in that a clutch means capable of adjusting torque is provided on the reel, and the yarn feeding drum is arranged between the driving means and the guide pulley. 5. A tension adjusting means is provided between the yarn supplying bobbin and the yarn feeding drum to absorb a temporary change in the yarn supplying speed of the yarn drawn from the yarn supplying bobbin. The apparatus according to item 4. 6. The apparatus according to claim 4, wherein the driving means and the yarn feeding drum are driven by one motor.