JPS598614B2 - How to stop winding when the winding machine has a power outage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for stopping winding in a thread winding machine, and more particularly to a winding machine in which a winding bobbin is brought into pressure contact with a friction roller and driven on its surface, and the thread is traversed by a separate traverse device. This invention relates to a method for stopping winding during a power outage.

For example, in a draw false twister, as shown in FIG. 1, yarn Y drawn out from a yarn supply package 1 passes through a guide 2, a feed roller 3, a heater 4, and then reaches a feed roller 5.

During this time, the undrawn yarn Y is stretched, and the yarn coming out of the feed roller 5 is given a false twist by a false twisting device 6 such as a pin type or a belt type, and a heater 7, and then passed through terriberry rollers 8 and 9 and subjected to friction. The film is wound up while being traversed by a traverse guide 12 onto a winding package 11 which is rotated in contact with a roller 10 . In such a device, in order to increase the yarn processing speed and prevent ribbon winding by changing the rotational speed of the cam roller 13, the drive source for the feed roller and friction roller system and the drive source for the traverse cam system are separated. That is, as shown in the second figure, the roller 3,
The rotation of the friction roller systems 5, 8, 9, 10, etc. is driven by one motor M1, and the rotation of the cam roller 13 system is driven by another motor M2.

Furthermore, the moment of inertia when the friction roller system is one rotating body is larger than the moment of inertia when the cam roller system is one rotating body. i.e. GD1
2> GD22 GD12: Inertia of the friction roller system GD22: Moment of inertia of the cam roller system When stopping the machine, the friction roller system has a large moment of inertia, and it takes a long time for it to come to a natural stop from the stop command, so the friction roller stops. Let Ti be the time it takes to do so.

On the other hand, the moment of inertia of the cam roller system is small, so if the time from the stop command to the stop of the traverse cam is tl, in the case of a natural stop, T1> is 1, and the friction roller system continues to rotate by inertia for a certain period of time even after the traverse cam comes to rest. Then, the thread is fed out. Therefore, since the yarn is wound around the winding package when the traverse is stopped, the yarn is wound at the same position on the package, but when the traverse is not performed, the yarn becomes slack. In other words, tension is applied to the thread due to the constant angle of the traverse, so when the traverse is not performed, the angle of the edge is zero, and therefore the thread becomes slack due to the inert rotation of the friction roller system. As a result, the yarn eventually winds up around the delivery roller 9 shown in the first figure, and the yarn breaks between the winding package 11 and the delivery roller 9. For this reason, when stopping a machine, as shown in Figure 3, the power to the friction roller system motor is turned off at T2 when a stop command is issued, and the friction roller system is stopped by inertia rotation as shown by line L1.
The cam roller system drive motor does not turn off immediately.
It is controlled to traverse according to the rotational speed of the friction roller 10, and the friction roller system is stopped T.
The traverse is stopped at approximately the same time as 3 to prevent yarn breakage.

However, in the event of an emergency, for example during a power outage, it is impossible to stop the machine as described above, and the fourth
As shown in the figure, from T2 during the power outage, the friction roller system passes through line L1 due to inertia rotation and comes to a natural stop after time T3.
The cam roller system passes through line L2 and comes to a natural stop after time T3. That is, the moment of inertia GD22 of the cam roller system is equal to the moment of inertia GD1 of the friction roller system as described above.
Since it is smaller than 2, the cam roller system stops earlier than the friction roller system, and the traverse of the system stops even though the friction roller system is rotating, causing thread slack and thread breakage on all spindles at the same time. do. Therefore, when electricity is started and winding is restarted, all spindles must be spliced, which is extremely troublesome.

The present invention has been made to solve the above-mentioned disadvantages.
This method provides a method for preventing yarn breakage by causing the friction roller system and the cam roller system to stop rotating in synchronization even during a power outage, and will be described below with reference to the drawings.

In FIG. 5, 14 is a main gear box, the main gear is driven by a motor M1, and an output shaft 15 connects a friction roller 10 and a feed roller 3 shown in the first diagram.
5 delivery rollers 8, 9, etc. are driven.

The friction roller 10 is fixed to a shaft 16 extending over the entire weight, and the drive of the output shaft 15 is transmitted to each of the rollers by a belt 19 placed between a pulley 17 fixed to the output shaft 15 and a pulley 18 of the shaft 16. The wind-up package 11 which is in surface contact with the roller 10 is rotated. On the other hand, M2 is a motor for driving the cam roller 13, which includes a shaft 20 of the motor, pulleys 21 and 22 fixed to the cam roller shaft 20, and a belt 2.
3, the cam roller 13 rotates, and the camshaft 24 that fits into the cam groove 13a of the camshaft 13 traverses left and right, and the rod 25 and the rod 2 that fix the camshaft 24 rotate.
The traverse pieces 12 fixed at 5 simultaneously traverse left and right to perform normal winding.

Furthermore, in FIG. 5, the shaft 20 of the cam roller motor M2
A pulley 27 is loosely fitted through an electromagnetic clutch 26, and a belt 30 is placed between the pulley 27 and a pulley 29 attached to one output shaft 28 of the main gear box 14.

Therefore, in a normal clutch-off state, the shaft 28 of the main gear box 14 is rotating, but the pulley 27 is loosely fitted to the shaft 20 and is in a free state, so the rotation of the shaft 28 is caused by the shaft 20 on the cam roller side. is not transmitted. An embodiment of the electromagnetic clutch 26 is shown in FIG.

That is, a rotating body 31 is key-fixed to the shaft 20.
A clutch plate 32 having an L-shaped cross section is fixed to the outer periphery of the clutch plate 32 by screws 33. 33 is a spline shaft fixed to the end face of the pulley 27 by a screw 34; teeth 33a of the spline shaft engage teeth 35a carved on the inner peripheral surface of an intermediate body 35; They are slidably engaged in the direction of the shaft 20.

Further, a pressing disk 36 is loosely fitted onto the shaft 20 between the end surface 31a of the rotating body 31 and the intermediate body 35, and is slidable in the direction of the shaft 20. 37 is a pin fixed to the rotating body 31, which enters the hole 36a of the pressing disk 36, and the shaft 2 of the pressing disk 36
It serves as a guide when moving in the 0 direction.

Further, friction members 3 made of rubber, cloth, etc. are provided on both end surfaces of the intermediate body 35.
8 is attached or screwed to the L-shaped clutch plate 32 to control the rotation of the pulley 27 via the spline shaft 33 intermediate body 35.
and rotates the rotating body 31 and shaft 20. Further, a solenoid 40 is fixed via a bearing 39, and the pressing disk 36 attracts or repulses as the solenoid 40 turns on and off.

The rotating body 31 is provided with a hole 41 opening at the end surface, and a spring 42 is inserted into the hole 41, and the tip of the spring is pressed against the pressing disk 36. In the above-mentioned electromagnetic clutch, when the solenoid 40 is normally energized, the pressing disc 3
6 is attracted by the solenoid 40 against the spring 42 and comes into contact with the end surface 31a of the rotating body 31, and the intermediate body 35 is free from any pressing force in the direction of the shaft 20 and rotates with the rotation of the spline shaft 33. ing.

Therefore, no pressing force acts between the intermediate body 35 and the clutch plate 32, and the rotation of the pulley 1J27 is not transmitted to the clutch plate 32, so that it is not transmitted to the rotating body 31 and the shaft 20. On the other hand, when the current flowing through the solenoid is turned off, the attraction force due to electromagnetic force no longer acts on the pressing disk 36,
The pressing disk 36 is moved to the right along the shaft 20 by the force of the spring 42, and the intermediate body 35 is moved against the teeth 3 of the spline shaft 33.
3a toward the clutch plate 32 and press the intermediate body 35.
The friction member 38 and the clutch plate 32 are in close contact with each other. Therefore, the rotation of the brake 27 is transmitted to the rotating body 31 via the subline shaft 33, the intermediate body 35, and the clutch plate 32, and the rotation of the rotating body 3
A rotational force is applied to the shaft 20 to which the key 1 is fixed. Next, a method of stopping winding using the above device will be explained.

During normal winding operations, the friction roller system and the cam roller system are driven by separate motors, and the electromagnetic clutch 26 is in an OFF state.

Now, if a power outage occurs for some reason, power is cut off to the drive motors of the friction roller system and the cam roller system, and each roller system becomes inertial rotation and decelerates. On the other hand, due to a power outage, the circuit shown in Figure 7 is activated, that is, the AC power supply A-C is turned off, and the off-delay 0-D is turned off after a certain period of time, cutting off the power to the solenoid of the electromagnetic clutch 26, as shown in Figure 6. The pressing disk 36 is actuated by the spring 42, and the clutch is engaged.

Incidentally, for a certain period of time after the power outage, that is, the time Td until the off-day delay 0.D is turned off, current flows from the battery 1D to the solenoid through the contact RA, and the clutch 26 remains in the OFF state.

That is, the above-mentioned time Td is set to set the time until the rotational speed due to the inertia of the friction roller system becomes equal to the rotational speed due to the inertia of the cam roller system, and is used to smoothly connect each roller system at the time of clutching. Also, it is provided to prevent stalling in the event of a momentary power outage or instantaneous voltage drop. Therefore, as shown in FIG. 8, when the cam roller system L3 is being driven at a higher rotational speed than the friction roller system L4, when a power outage T4 occurs, both roller systems immediately enter into inertial rotation, but after a certain period of time Td, the electromagnetic clutch 26 is on T5
The cam roller system L3 rotates using the inertial rotation of the friction roller system L4 as a driving source, and the traverse of the yarn continues, and the traverse of the yarn stops when the friction roller stops T6.

Figure 9 shows a case where the rotational speed of the friction roller system L5 is higher than the rotational speed of the cam roller system L6, and both roller systems enter inertial rotation from T4 at the time of power outage, and the cam roller system has a smaller moment of inertia and shifts to low speed sooner. However, after a certain period of time Td, the rotation of the cam roller system L6 is accelerated by the electromagnetic clutch T7 to the rotation of the friction roller system L5, the traverse of the yarn is continued, and the cam roller system is stopped at the same time as the friction roller system is stopped T8. become. Therefore, even if a power outage occurs during winding, the yarn sent out by feed rollers, delivery rollers, friction rollers, etc. will be delivered to the winding package by the traverse guide that traverses in synchronization with the inertial rotation of the friction roller system. Since the yarn is wound while being traversed, the winding operation is stopped without causing the yarn breakage that occurs when the traverse guide stops even though the friction roller system is rotating as in the past. do. As described above, in the present invention, a friction roller system such as a feed roller, a delivery roller, and a friction roller that feeds the yarn and drives the winding package is rotated by one drive motor, and when winding the yarn to the winding package. A traverse guide for traversing the yarn is driven by a drive motor separate from the above drive motor, and one rotating shaft of the friction roller system and one rotating shaft of the cam roller system that drives the traverse guide are connected by an electromagnetic clutch. A circuit is provided to connect the electromagnetic clutch through the cam roller system and turn on the electromagnetic clutch in the event of a power outage, and to connect the rotating shaft of the friction roller system and the rotating shaft of the cam roller system to follow the inertial rotation of the friction roller system in the event of a power outage. Since the cam roller system is activated by the movement of the cam roller system, the cam roller system, which has a small moment of inertia, does not stop before the friction roller system, which has a large moment of inertia.
The traverse guide continues traversing without stopping until the rotation of the package cage due to the rotation of the friction roller stops, and the thread is wound up at the same position on the package cage, resulting in yarn slack, and furthermore, the thread wraps around the delivery roller and breaks the thread. This eliminates the inconvenience that occurs when winding occurs, and there is no need to splice each spindle when winding is restarted, which is extremely effective in a thread winding machine.

[Brief explanation of drawings]

Figure 1 is a schematic configuration diagram showing an example of a drawing false twisting machine. Figure 2 is a schematic configuration diagram showing the drive sources of the friction roller system and cam roller system. Figure 3 is a normal stoppage diagram of the friction roller system and cam roller system. Figure 4 is a speed diagram showing the stopped state during a power outage. Figure 5 is a schematic configuration diagram showing an embodiment of a device for carrying out the method of the present invention. Figure 6 is an electromagnetic diagram. FIG. 7 is a cross-sectional view showing an example of the clutch, FIG. 7 is a diagram showing an example of the operating circuit of the electromagnetic clutch, and FIG. 8 is a speed diagram showing an example of the stopped state of the friction roller system and cam roller system according to the present invention. FIG. 9 is a speed diagram showing another example of the same. 3, 5... Feed roller, 8, 9...
・Delivery roller, 10... Friction roller, 12... Traverse guide, 13...
...Cam roller, 26...Electromagnetic clutch, M1
...Friction roller system drive motor, M2
...Cam roller system drive motor, T4...
・At the time of power outage.

Claims (1)

[Claims] 1 A friction roller system such as a feed roller that sends out the yarn, a delivery roller, and a friction roller that rotates the take-up package is driven by one drive motor, and the traverse guide cam roller that traverses the yarn is driven by the above drive motor. In a thread winding machine that uses a separate motor, when a power outage occurs during winding, the inertial rotation of the friction roller system is transmitted to the cam roller system, and winding and traverse of the thread are performed by the inertial rotation of the friction roller system. A method for stopping winding in a winding machine during a power outage, characterized in that a traverse guide is stopped at the same time.