JPS64308B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intake valve actuation control device for a stationary single spindle knotter type automatic winder having a plurality of winding units.

A single-spindle knotter type automatic winder consists of a plurality of winding units and one driving unit, and the driving unit includes a power unit necessary for winding and yarn splicing operations, and a power unit for finding the yarn end when performing yarn splicing operations. In order to generate the necessary negative air pressure, there is a suction blower connected by a duct to the end suction nozzle of each winding unit.

Conventionally, in this type of automatic winder, the amount of air required to find the yarn end during yarn splicing in the winding unit is calculated based on the air amount required for one yarn splicing operation as the basic unit, and the amount of air required for finding the yarn end during splicing by the winding unit is calculated as the number of yarn splicing operations of the entire winding unit. Generally, it is selected to be about three times the average value. That is,
In the automatic winder, there is no mutual restriction on yarn splicing between each winding unit, and each winding unit is unique in the yarn splicing required when yarn breakage occurs in each winding unit, pipe thread exchange, etc. Since the number of thread splicing operations is not averaged, sometimes the number of thread splicing operations is large, and on the other hand, there are times when there is no weight for thread splicing operations, and it is necessary to install a blower with a capacity that can handle this duplication. It was necessary.

However, in recent years, energy saving has been taken up as an important issue, and power loss due to such load fluctuations can no longer be ignored, so it is important to minimize load fluctuations and use blowers in locations where operating efficiency is high. has become desired.

In view of this point, the present invention suppresses the maximum amount of air in the suction blower, which is a negative pressure air source necessary for yarn piecing, and moves it to a zone where the amount of air used is small, thereby reducing load fluctuations in the negative pressure air source. The purpose is to reduce the amount of air and use the negative pressure air source with high efficiency.Each spindle is equipped with an intake valve and a thread running detector, and when the running detector detects a breakage of the thread, etc., the above-mentioned In an automatic winder that opens an intake valve and uses negative pressure air to take out the yarn end and perform a yarn splicing operation, the start of the yarn splicing operation is detected by the operation of the yarn traveling detector, and the number of overlapping weights for the yarn splicing operation is adjusted accordingly. means for converting the electric signal into an electric signal having a magnitude of a specified value; means for measuring the electric signal and outputting a signal to interrupt the thread splicing operation when the value exceeds the upper limit value; and disappearing the interrupt signal when the value reaches the lower limit value. and a means for causing the intake valve to interrupt the splicing operation of the weights other than the open weight of the intake valve according to the interruption signal, and to stop the opening of the intake valve;
It is characterized in that the number of openings of the intake valve is always kept within a set number.

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

FIG. 1 is a developed diagram showing the concept of the structure of the present invention in relation to a single winding unit.

In the figure, reference numeral 1 denotes a suction blower as a negative pressure air source that generates negative pressure air to detect the end yarn from the winding bobbin 2 when the yarn breaks. (not shown) is connected to a suction nozzle 4 (not shown). Reference numeral 5 indicates the winding drum for the yarn drawn out from the supply pipe yarn 6; 7 indicates the winding drum for the yarn drawn from the supply pipe yarn 6; and 7 indicates the presence or absence of yarn running from the supply tube yarn 6 to the winding drum 5; This yarn running detector has the function of detecting and cutting defects, and is composed of a yarn running detection head 7-1 and an electronic circuit 7-2 connected thereto. 8
In the winding unit control device, the clutch 9 is actuated by the no-thread signal from the thread running detector 7 when the contact point 21A is opened, and the cam group 10 is connected to the cam drive shaft 11, and by the rotation of the cam group 10, If there is no yarn in the supply pipe thread 6, the winding ball 2 is stopped and the supply pipe thread 6 is replaced with a new pipe thread.
In the case of thread breakage, the winding drum 5 is reversed by a reversing pulley 12 attached to the cam drive shaft 11, and in both cases, the intake valve 13 is opened and the suction nozzle 4 is
The thread end of the upper thread is suctioned out by the threader, and a knotter (not shown) is used to thread the thread together with the separately gripped lower thread, and after tying, the thread winding is restarted.

Reference numeral 14 denotes a pulley rotatably attached to a drum drive shaft 15, which rotates the winding drum 5 via a pulley 17 rotatably attached to a drive arm 16.

FIG. 8 shows a side view of an example of a winding unit applied to the present invention, in which 18 is a knot;
Reference numeral 19 denotes a tension device, and the same reference numerals as in FIG. 1 indicate the same parts.

The structure and operation of the winding unit have been explained schematically above, but the details can be found in, for example, the
This is as explained in Japanese Patent Publication No.-29910, Japanese Patent Publication No. 55-20699, etc.

Next, the characteristic structure and operation of the present invention will be explained.

In FIG. 1, 20 is an intake valve operation control section;
This is connected to a signal line 22 which is supplied with a signal indicating the presence or absence of yarn travel based on the closing or opening of the contact 21B of the yarn travel detector 7, and is a pointer that generates a deflection corresponding to the number of spindles entering the yarn splicing operation. 23 and upper limit setting hand 24
A meter relay having a lower limit setting needle 25 and a circuit described later is provided, and the meter relay has a lower limit setting needle 25.
3 exceeds the set number of the upper limit setting needle 24, a thread splicing operation interruption signal is sent to the signal line 26 [26-1, 26-
2,...26-n].

Now, when the thread breaks, the thread running detector 7 detects this and opens this contact 21A, a thread breakage signal is input to the winding unit control device 8, the clutch 9 is activated, and the cam group 10 stops rotating. start. When the timing cam 28 operates the timing switch 29 immediately before the valve cam 27 opens the intake valve 13, a yarn splicing operation interruption signal from the intake valve operation control section 20 is sent to the winding unit control device 8 via the signal line 26. This interrupt signal and timing switch 29
Due to the AND condition with the closing signal, the clutch 9 is disengaged, the cam group 10 stops rotating, and the intake valve 1
The yarn splicing operation is interrupted just before the thread 3 is opened. When the timing switch 29 closes, the weight whose intake valve 13 is already open is already in the position of the timing cam 2.
8 has passed through the operating range of timing switch 29, and the yarn splicing interruption signal and timing switch 2
Since the AND condition with the closing signal of 9 is not satisfied, the thread splicing operation continues, and when the cam group 10 rotates once, the fixed point switch 30 is activated and the cam group 10 stops, completing the thread tying and winding. will be resumed.

On the other hand, a contact 31A (described later) in the weight winding unit control device 8 where the yarn splicing operation was interrupted is closed by the interruption signal, and by switching the yarn travel signal of the yarn travel detector 7 to "present", the intake valve is activated. The control unit 20 monitors the condition of the weight during the thread splicing, and as the thread splicing is completed, the weight during the thread splicing decreases and the pointer 23 reaches the lower limit setting needle 25.
Since the signal for interrupting the yarn splicing operation disappears, the yarn splicing operation is sequentially resumed.

FIG. 2 shows a part of the circuit of the winding unit control device 8. As shown in FIG. As shown in the first figure, 21A is an output contact of the yarn travel detector 7, which is connected to the winding unit control device 8 via a signal line 32, and is closed during yarn winding and opened when the yarn breaks. When this contact 21A is opened, the solenoid 9A of the clutch 9 is energized via the normally closed contact 33B of the relay 33, and the cam group 10 is connected to the cam driving shaft 11 to start the yarn splicing operation.
At this time, the drive arm 16 is pushed down by the action of a cam (not shown) in the cam group 10, and the pulley 17
is separated from the drum drive shaft 15, the rotation of the winding drum 5 is stopped, and the suction nozzle 4 is in a standby state in order to find the yarn end of the winding ball 2. Since the other contact 21B of the yarn travel detector 7 shown in FIGS. 1 and 3 is opened at the same time as the yarn breaks, the signal line 22 [2] indicates that the winding unit has entered the yarn splicing operation.
2-1, 22-2...22-n] to the intake valve operation control device 20. At this point, if the number of spindles of other winding units whose intake valves 13 are open has reached the set value, the limit value will be exceeded due to the new yarn splicing, and the intake valve operation control Output contact 34A of section 20 is closed.

During this period, the cam group 10 continues to rotate, and the contact 29A of the timing switch 29 is closed at a position just before the intake valve 13 is opened, so the relay 35 is activated and the gate relay 3 is closed by closing the contact 35A.
1 is activated, its contact 31A is closed, and the same signal as in the thread running state is sent to the intake valve operation control section 20.
Therefore, the intake valve operation control unit 20 senses the weights with which the intake valve 13 is opened at this point, and as the threading of these weights is completed, the opening number of the intake valve 13 decreases. When the value falls below the set value of the lower limit setting needle 25, the output contact 34A is opened, the contact 35B of the relay 35 is closed, the solenoid 9A of the clutch 9 is energized, the clutch 9 is operated, and the yarn piecing is resumed.

Reference numeral 36 denotes a switch that is closed when thread tying fails continuously. When this switch 36 is closed, the magnet 37A of the stop solenoid 37 is energized, and the pulley 17 is separated from the drum drive shaft 15, and the winding unit is started. Stop the winding function. At this time, the relay 38 operates simultaneously and operates the gate relay 31 through its contact 38A.
By closing A, a thread running signal is given to the intake valve operation control section 20, so that the stop weight is not added when another functioning weight enters the thread splicing.
3 and 4 are circuit diagrams of the counting portion of the intake valve operation control section 20. FIG.

Reference numeral 39 denotes a unit resistor having a resistor _R1 , which is connected in series as many as the number of winding units, and connected to the power supply via a current limiting resistor 45 having a resistor _R0 . And this resistance 3
Reference numerals 9 and 9 connect the output contact 21B of the yarn travel detector 7 of each winding unit and the contact 31A of the gate relay 31 of the winding unit control device 8 via the signal line 22, respectively.
connected to.

40 is a coil of a voltage detection type meter relay that causes the pointer 23 to swing according to the voltage value, and is connected to both ends of a unit resistor 39 connected in series.

The number of contacts 21B and 31A that are currently open is n,
If the supply voltage is E, the coil 4 of the meter relay
Since a voltage of E・n・R ₁ /nR ₁ +R ₀ is applied to 0,
The number of spindles that have entered the yarn splicing operation can be detected from the deflection of the pointer 23.

In Fig. 4, 41 is the upper limit setting hand 24 and the pointer 2.
3, which is closed when the pointer 23 reaches a set value or higher. Also, 42 is the guideline 2
3 and the lower limit setting hand 25, which is closed when the pointer 23 becomes below the set value.
When contact 41 is closed, relay 43 is self-held by its contact 43A-1;
-2 closes the splicing interruption command circuit of the intake valve operation control section 20 shown in FIG.
26-2...26-n] outputs a yarn splicing operation interruption signal. The relay 44 is for canceling this interrupt signal, and is activated when the pointer 23 contacts the lower limit setting needle 25 and the contact 42 is closed.
Since the self-holding of the relay 43 is released by opening A, the contact 43A-2 is opened and the cancellation of the thread splicing operation interruption signal is started.

In FIG. 5, 34 is the relay 4 as mentioned above.
3 and self-retained by the contact 34A', each interposed contact 34 in the signal line 26
This is a relay that closes A and outputs a thread splicing operation interruption signal.

Reference numeral 46 denotes a sweep switching device, which includes a plurality of fixed contacts 47 connected to the relays 34 of each weight and an open circuit portion 4 in part.
It has a rotary contact 49 with 8. 50 is a drive circuit for stepping the rotary contact 49, and this circuit is composed of a rotary solenoid.
The contact 44 is activated by the relay 44 shown in FIG.
Since A is closed, the timing pulse oscillator 51 starts operating, and its output contact 51A is turned on and off. This activates the rotary solenoid and advances the rotary contact 49 one circuit at a time.

In this operation, when the pointer 23 becomes lower than the lower limit setting pointer 25, the rotary contact 49 starts to advance, and as the pointer 49 advances, an open circuit 48 appears in the circuit of the relay 34.
By intervening, the self-holding of the relay 34 is sequentially released and its contact 34A is opened to resume the interrupted yarn piecing.

Although one embodiment has been described above, the circuit shown in FIG. 6 can be used to detect that the yarn splicing operation has started.

In the figure, 33B-2 is a normally closed contact of the relay 33 connected in series with the contact 21A of the thread travel detector 7, and 31B is a normally closed contact of the gate relay 31, and the normally closed contacts 31B and 33B-2 are connected in series. After connecting them, they were connected in parallel as many as the weights, and this parallel circuit was connected to a power source via a coil 40A of a current detection type meter relay.

Thus, when the yarn splicing is being performed, the resistor 52 is inserted into the circuit of the meter relay coil 40A, so there is a proportional relationship between the number of weights entering the yarn splicing and the current flowing through the meter relay coil 40A. is obtained, and the same operation as in the above-mentioned embodiment can be performed.

FIG. 7 shows an overall configuration diagram of the present invention. In the same figure, reference numeral 53 indicates a winding unit, and a plurality of winding units are stacked on a beam 54 in the longitudinal direction. Reference numeral 55 indicates a driving unit including a suction blower, a power unit, etc., and 56 indicates an intake valve control device.

In order to make the explanation clear, all of the above embodiments have been explained using relays with contacts, but it is also possible to use known means to make the relays non-contact. In this way, according to the present invention, when the number of overlapping intake valve openings increases, the subsequent thread splicing operation of the weight is made to wait until the number of overlapping decreases, and the number of overlapping openings of the intake valves is always maintained. By keeping the value within a certain range, the capacity of the suction blower can be reduced, load fluctuations are reduced, and the suction blower can be used with high efficiency.

[Brief explanation of drawings]

Fig. 1 is a development diagram showing the concept of the structure of the present invention in relation to one winding unit, Fig. 2 is a partial circuit diagram of the winding unit control device, and Figs. 3, 4, and 5 are FIG. 6 is a circuit diagram of a portion of the intake valve operation control section, FIG. 6 is a modified circuit diagram of a portion of the intake valve operation control section, FIG. 7 is an overall configuration diagram of the present invention, and FIG. 8 is a part of the winding unit. FIG. 3 is a side view of an example. 1... suction blower, 2... winding ball, 3...
Duct, 4... Suction nozzle, 5... Winding drum, 7... Yarn traveling detector, 8... Winding unit control device, 13... Intake valve, 20... Intake valve operation control section, 23... ...Meter relay guidelines, 24...
Upper limit setting needle, 25... Lower limit setting needle, 53... Winding unit, 55... Driving unit, 56... Intake valve control device.

Claims (1)

[Claims] 1. An automatic winder that is equipped with an intake valve and a yarn travel detector for each spindle, and when the travel detector detects a breakage of the yarn, the intake valve is opened to take out the yarn end using negative pressure air and perform a yarn splicing operation. means for detecting the start of a yarn splicing operation by the operation of the yarn travel detector and converting the number of overlapping weights of the yarn splicing operation into an electric signal of a corresponding magnitude; and a means for measuring the electric signal and determining the value thereof. means for outputting a signal to interrupt the thread splicing operation when the upper limit value is exceeded; and means for erasing the interrupt signal when the lower limit value is reached; An intake valve operation control device for an automatic winder, characterized in that the yarn splicing operation of the winder is interrupted and the opening of the intake valve is stopped so that the number of openings of the intake valve is always within a set number.