JPH0328048Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fixed length winding device for a spinning thread winding machine.

In the thread winding process at a spinning factory, it is required to make the lengths of each thread uniform to a certain length, and various devices have been put into practical use in recent years.

For example, as shown in FIG. 1, the winding thread of the winding thread 1 is detected by a rotation detector 3 that detects the number of rotations of the drive drum 2 that is in circumferential contact with the winding thread 1, or a traverse detector 5 that detects the number of traverses of the thread 4, etc. Pulses proportional to the length are sent out, which are counted by a counter 7 via a thread running detection switch 6, and a full output signal from the counter 7 operates a cutter 8 to cut the thread, and a display A device configured to notify the full number at 9 is already known.

However, in this known device, the counter 7 etc. for setting the thread length must be installed corresponding to each drive drum, which increases the cost of the device, and when changing the set value, it is necessary to install the counter 7 etc. for each drive drum individually. Because of this, operational efficiency was hindered.

The present invention was devised in view of the shortcomings of conventional devices, and its purpose is to collectively control the settings for winding yarn at a fixed length, and to provide setting values with high resolution and spinning with less error. An object of the present invention is to provide a fixed length winding device for a thread winding machine.

To achieve this objective, the present invention provides a rotation detector for detecting the rotation speed of a power shaft of a drive drum that rotates circumferentially around a large number of bobbins in a spinning thread winding machine, and an output rotation speed of the rotation detector. A central control unit with a built-in multiplier that multiplies the pulse to an electric pulse with a multiplication value set by the coefficient setter, a frequency divider that divides the frequency by the division value set by the yarn length setter, and a power supply device, and a logic an integration counter that outputs a signal when a full value is reached, which is connected to the output of the logic circuit; a display connected to the integration counter via a switch circuit; and a reset switch between the integration counter and the switch circuit. and a yarn traveling detector and a cutter, each of which is provided in proximity to each yarn traveling in correspondence with the driving drum, The output pulses of the frequency divider in the central control unit are branched in parallel via power supply lines and applied to one input of each of the logic circuits, and the other input of each of the logic circuits is connected to each of the threads. The output of the running detector is added, and the output of each of the logic circuits sends out a signal when each of the integration counters reaches a full value, and the output signal causes the operation of each of the switch circuits to send out a signal. The present invention is characterized by a configuration in which each cutter is operated to cut the thread, and an indication is provided on each of the indicators.

The present invention will be explained below based on an embodiment shown in FIGS. 2 to 5.

In Fig. 2, driving drums 2 ₁ , 2 _{2 . . .} are arranged and fixed at approximately equal intervals on the power shaft 12 and are continuously rotating. 11 ₁ , 11 ₂ ... are formed, and the threads 4 ₁ ,
4 ₂ ... are guided by the guide grooves 11 ₁ , 11 ₂ ... and are twisted around the winding threads 1 ₁ , 1 ₂ .... A magnet 13 that rotates synchronously with the drive drums 2 ₁ , 2 _{2 .} . . is fixed to the power shaft 12, and a magnetic rotation detector 3 is provided opposite the magnet 13.

This rotation detector 3 is connected to the input of a multiplier 14 built in the central control unit 18, and
A rotation pulse P synchronized with the rotation speed of ₁ , 2 ₂ . . . is sent out. The central control device 18 includes, in addition to the multiplier 14, a coefficient setter 15, a frequency divider 16, a yarn length setter 17, a power supply device 19, and the like. The multiplier 14 converts the output rotation pulse P of the rotation detector 3 into a desired multiplication value M, that is, an electric pulse _multiplied by M, _and outputs it. The length of the thread 4 ₁ , 4 ₂ ... is wound on the winding thread 1 ₁ , 1 ₂ ... each time according to the unit value of the thread (rotation thread length L ₀ described later)
The numerical value is calculated and set in the coefficient setter 15.
That is, the multiplier 14 outputs the number of pulses L ₀ =P×M for each rotation of the drums 2 ₁ , 2 ₂ . Note that the configuration of the multiplier 14 and the multiplication value M will be described later based on FIGS. 3 and 4.

In FIG. 2, the output of the multiplier 14 is the output of the frequency divider 1
6, this frequency divider 16 is an up-down counter, and the output signal of the multiplier 14 is connected to the thread length setting device 1.
7 to a desired frequency division value N, that is, the number of electrical pulses is 1/N and output. The frequency division value N is set in the relationship N=S/K with respect to the unit length of the desired fully wound yarn length S. Therefore, the frequency divider 16 sends out an output signal of one pulse every time N=S/K pulses of the output pulse of the multiplier 14 are input. The value of this K is thread 4 ₁ ,
4 ₂ . . . is used to cope with the interruption, and is made to match the full value K of the integration counters 23 ₁ , 23 ₂ .

The coefficient setter 15 and yarn length setter 17 are digitally displayed by connecting 3 to 4 digits with a thumbhole switch.

The output pulses of the frequency divider 16 are connected by a power supply line 20 to units 21 ₁ , 21 ₂ . . . installed corresponding to each drive drum 2 ₁ , ₂ 2 .
1 ₁ , 21 ₂ ... are logic circuits 22 ₁ , 22 ₂ ..., integration counters 23 ₁ , 23 ₂ ..., switch circuits 24 ₁ , 2
4 ₂ ..., reset switches 25 ₁ , 25 ₂ ..., indicators 9 ₁ , 9 ₂ ..., etc., and the detection unit 10
₁ , 10 ₂ . . . are respectively connected.

The pulse signal sent from the frequency divider 16 via the power supply line 20 is connected to one input of the logic circuits _{22 1} , 22 ₂ . . .
The other input of 2 ₂ ... is the detection unit 10 ₁ , 10 ₂ ...
and connected to yarn travel detectors 26 ₁ , 26 ₂ . . . arranged on the travel paths of the yarns 4 ₁ , 4 ₂ .

The yarn running detectors 26 ₁ , 26 ₂ . . . are equipped with, for example, a light source and a photovoltaic cell _{, and allow the yarns 4 1 ,} 4 _{2 .} Detects the presence or absence of yarn running by detecting fluctuations such as yarn vibration,
An output signal having a logic value (1) when the thread is running and a logic value (0) when the thread is stopped is applied to the other input of the logic circuits 22 ₁ , 22 ₂ . logic circuit 22
The outputs of ₁ , 22 ₂ ... are integrated counters 23 ₁ , 23 ₂ ...
Therefore, while the yarn is running, the output pulses of the frequency divider 16 are connected to the integration counters 23 ₁ , 23 ₂ . . .
It is integrated during the thread breakage, and the integration is interrupted during thread breakage.

The integration counters 23 ₁ , 23 ₂ . . . are, for example, electromagnetic counters with digital displays or I/C counters backed up by batteries, and are memory counters that memorize intermediate counts even if the power supply is interrupted, and When a predetermined full value (for example, 1000) is reached, an output signal is sent out and the switch circuits 24 ₁ , 24 ₂
..., and at the same time operate the cutters 8 ₁ , 8 ₂ ... stored in the detection units 10 ₁ , 10 2 ... and arranged on the travel paths of the threads 4 ₁ , 4 ₂ ..., to remove the threads _{4 1 ,} 4 . ₂
... is disconnected, and the display 9 ₁ , 9 ₂ ... is used to notify the user.

Next, the relationship between the frequency division value N and the full value K of the integration counters 23 ₁ , 23 ₂ . . . will be described in detail.

Since the multiplier 14 outputs the number of pulses M corresponding to the yarn length L ₀ associated with one rotation of the drive drums 2 ₁ , 2 ₂ . It is calculated as M×n. Therefore, if the frequency division value of the frequency divider 16 is set to N ₀ and S=N ₀ =M×n, then the output signal of the frequency divider 16 is sent to each unit 21 ₁ , 21 ₂ , . . . as a full pulse. The theory is to complete the full winding by operating the switch circuits 24 ₁ , 24 ₂ .
When thread breakage occurs in _{unit 1} , the winding thread ₁₁ idles, and during this time the up-down counter of the frequency divider 16 continues to integrate, and the cumulative number during that time is calculated by the unit 2 that is experiencing thread breakage.
1 This is a large error for ₁ . In order to eliminate this drawback and to collectively set and display the winding yarn lengths of a large number of units using one central control device, for example, in units of meters, yards, etc., the above frequency division value N ₀ can be set in the control section. Efforts have been made to divide it into units.

That is, the frequency division value N ₀ corresponding to the fully wound yarn length S is divided into the frequency division value N of the frequency divider 16 and the integration counters 23 ₁ , 23 ₂ . . .
N ₀ = S = M x n = N x K
Establish a relationship between

Therefore, for example, when yarn breakage occurs in the yarn 4 ₁ , the unit 21 ₁ detects the yarn running signal detector 26 ₁
outputs a signal and closes the gate of the logic circuit 22 ₁ , and during that time the output pulse of the frequency divider 16 does not add up the integration counter 23 ₁ , so even if the idling time of the winding thread 1 ₁ is long, the full winding length remains The error in S remains within the range of 1/K.

As the integral value K of the integration counters 23 ₁ , 23 ₂ . . . increases, the error decreases, but on the other hand, the yarn length setting value N of the frequency divider 16 becomes rougher. Practically speaking, although it depends on the number of thread breakages, when the error range is within 0.5% and the thread length setting value is about 4 digits, the appropriate full value K is 1000.

Incidentally, by displaying the progress of the integration counters 23 ₁ , 23 _{2 .} . . , it is also possible to know the amount of yarn to be wound.

As described above, the winding threads 1 ₁ , 1 ₂ ... are the desired full winding thread length S
_The thread bobbin is replaced _, and the reset switches _{25 1 ,} 25 _{2 .}
... and repeat the winding operation.

Next, based on FIGS. 3 and 4, the multiplication value M
This section explains the selection, etc.

In FIG. 3, the multiplier 14 has an input terminal 27 and an output terminal 28, and is composed of a flip-flop circuit 29, an oscillator 30, a down counter 31, etc., and a multiplication value M is set by a coefficient setter 15.

When the rotation pulse P from the rotation detector 3 is input to the input terminal 27, the flip-flop circuit 29
is set, and a start signal F is sent to the delay circuit 33 and one shot circuit 34 connected to the output terminal 32, respectively. The delay circuit 33 sends out an output after a delay time T _B after receiving the start signal F using an integrating circuit or the like. The one-shot circuit 34 is a one-shot multi-circuit that sends out an output with a small output width _TA , with the condition that T _B > _TA .

Therefore, first, the output signal A of the one shot circuit 34 is generated and the down counter 31 is set. That is, the down counter 31 is an I.C.
(integrated circuit) up/down counter,
The coefficient setter 15 is connected to the setting terminal 35 . As mentioned above, the coefficient setter 15 is a combination of thumbhole digital switches, and is suitably set to 3 to 4 digits. When the output signal A of the one shot circuit 34 is applied to the set terminal 36 of the down counter 31, the down counter 31 is set to the multiplication value M set in the coefficient setter 15. Next, the output signal B of the delay circuit 33 is generated with a slight delay, and the output signal B of the oscillator 3 is generated.
Oscillates 0.

The oscillator 30 is a blocking oscillator, and the output of the delay circuit 33 is input to the input terminal 37 of the down counter 31. Note that the oscillation frequency of the oscillator 30 must be selected to be sufficiently higher (several hundred times) than the rotation pulse P of the rotation detector 3.

The down counter 31 is subtracted by the pulse input of the oscillator 30, and when the stored value of the down counter 31 reaches 0 by the pulse input of the set value M count, a signal is generated at the reset terminal 38, and the flip-flop circuit 29 connected thereto generates a signal. Reset. As a result, the output signal at the output terminal 32 of the flip-flop circuit 29 disappears, and at the same time the oscillator 30
oscillation stops. Furthermore, when the rotation pulse P is applied to the input terminal 27 again, the flip-flop circuit 29
is set, the same operation as above is repeated, and the output terminal 28 of the multiplier 14 receives the input pulse P.
A multiplied signal PM, which is multiplied by M, is sent out. The rotation pulse P of the rotation detector 3, which is the signal pulse of each part of the multiplier 14, the start signal F of the flip-flop circuit 29, the output signal A of the one-shot circuit 34, the output signal B of the delay circuit 33, and the multiplier 1
The situation of the multiplied signal PM of 4 with respect to the horizontal axis time T is shown in FIG.

Next, an example of calculating the multiplication value M will be shown. In FIG. 5, if the traverse width of the drive drum 2 is W, the diameter is D, and the number of rotations of the drive drum 2 during one reciprocation of the thread 4 along the guide groove 11 is n, then the drive drum 2 is
The average length L ₀ of the rotating yarn wound around the winding yarn 1 during rotation can be determined geometrically from the following relational expression.

(nL ₀ ) ² = (nπD) ² + (2W) ² Therefore, L ₀ = πD√1 + (〓〓) ^2The coefficients D, W, and n in the above formula are all constants determined by the structure of the thread winder. Therefore, the rotating yarn length L ₀
is also a constant.

Now, in order to make the multiplication signal PM of the multiplier 14 one pulse per unit length (for example, 1 cm), the multiplication value M
may be set as M=L ₀ .

According to the fixed length winding device of the present invention, the coefficient setter 15 semi-fixes the diameter of the drive drum of the bobbin winder, the traverse width, the traverse period, the slip, etc. as constants measured. By setting and compensating and multiplying the number of pulses per unit length, the yarn length setting device 17 can directly read and display the desired winding yarn length on a unit scale such as meters or yards. 26 ₁ , 26 ₂ ..., logic circuits 22 ₁ , 22 ₂ ... and integration counters 23 ₁ , 23 ₂
..., etc., it is possible to extremely reduce errors caused by occurrence of yarn breakage, and the winding yarn lengths of a large number of units 21 ₁ , 21 ₂ ... can be collectively set and displayed in arbitrary unit scales by one central control device 18. It is something.

In addition, according to the present device, only one rotation detector, setting device, etc. are required, and furthermore, the integrator in the unit can be a simple constant value integration counter, so the cost is significantly reduced, and the handling operation is simple. Furthermore, it has many advantages such as being able to be easily installed in existing thread winding machines.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional example, Figs. 2 to 5 show an embodiment of the present invention, Fig. 2 is an explanatory diagram of the whole, Fig. 3 is an explanatory diagram of a multiplier, and Fig. 4 is an explanatory diagram of a multiplier. A status diagram of the signal pulses of each part of the multiplier with respect to the horizontal axis time T,
FIG. 5 is an explanatory diagram showing an example of calculating a multiplication value. 1, _{1 1} , 1 ₂ ... Winding thread, 2, _{2 1} , 2 ₂ ... Drive drum, 3 ... Rotation detector, 4, 4 ₁ , 4 ₂ ...
Thread, 8 ₁ , 8 ₂ ... Cutter, 9 ₁ , 9 ₂ ... Display, 14 ... Multiplier, 16 ... Frequency divider, 18 ...
Central control unit, 20... Power supply line, 21 ₁ , 21 ₂ ...
... Unit, 22 ₁ , 22 ₂ ... Logic circuit, 23 ₁ ,
23 ₂ ... Integration counter, 26 ₁ , 26 ₂ ... Yarn travel detector.

Claims (1)

[Claim for Utility Model Registration] In a spinning thread winding machine, there is provided a rotation detector for detecting the rotation speed of a power shaft of a drive drum that rotates in circumference around a large number of bobbins, and a rotation pulse outputted from the rotation detector by a coefficient. A central control unit that includes a multiplier that multiplies the electric pulse of the multiplication value set by the setting device, a frequency divider that divides the frequency by the division value set by the yarn length setting device, and a power supply device, a logic circuit, and a power supply device. an integrating counter connected to the output of a logic circuit and outputting a signal when a full value is reached; a display connected to the integrating counter via a switch circuit; and a reset switch between the integrating counter and the switch circuit; The central control device includes a unit arranged corresponding to each of the drive drums, and a yarn running detector and a cutter respectively provided in proximity to each yarn running corresponding to the drive drum. The output pulses of the frequency dividers are branched in parallel via the power supply line and applied to one input of each of the logic circuits, and the other input of each of the logic circuits is connected to the output pulse of each of the yarn running detectors. The outputs are added, and the output of each logic circuit gives
When each of the integration counters reaches a full value, a signal is sent out, and the output signal operates each of the cutters through the operation of each of the switch circuits to cut the thread. A fixed length winding device for a spinning thread winding machine, characterized by a configuration in which a display is provided.