JPS58220862A - Metsuke measurement of tufting machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for measuring the basis weight of a tufting machine.

Carpets woven using tufting machines are priced and traded based on weight. Therefore, if you use more yarn than the specified weight, damage will occur.
There will be 5 things. Therefore, measuring the basis weight has been an important task for carpet manufacturers. The basis weight is the weight obtained by the length of the thread used x the number of threads x the thickness of the thread.

Up until now, the basis weight has been measured by cutting a woven carpet into a 1 d piece in the center, removing all the yarn used, and weighing it on a scale. In order to cut the center to 1m", the entire width was cut by about 1.5m in the length direction, and the center was cut into 1m square pieces. Therefore, the thread from only the cut part was wasted. There was a drawback that the loss of work and time was very large.

In view of the above-mentioned conventional drawbacks, the present invention eliminates the conventional drawbacks by measuring the basis weight during carpet manufacture and controlling the basis weight to a predetermined value during the manufacturing process based on the displayed measurement results. The purpose of the present invention is to provide a method for measuring the basis weight.

Hereinafter, the present invention will be specifically explained based on a first embodiment shown in FIGS. 1 to 3.

FIG. 1 is a conceptual diagram showing the principle of a control method for a tufting machine according to a first embodiment of the present invention, which was disclosed in Japanese Patent Application No. 54-81341. In the figure, reference numeral 1 indicates a base fabric, and a needle 5 driven by a three-thread stitch shaft 4 sent by a yarn roller 2
It is driven into the bail 6 and the carpet tufted material 7.
is woven and sent out by a spike row 28.

Next, the AFi yarn feed yarn feed detector uses a photoelectric non-contact switch to detect the yarn feed speed and send out a predetermined number of pulses for a constant yarn feed length. There is.

In addition, the B/d stitch number comparison detector detects the number of reciprocations of the needle 5 corresponding to the number of stitches using an electromagnetic non-contact switch, and transmits a predetermined number of pulses for one reciprocation of the needle 5. It has become.

1' Next, a CI/'i base material feed detector detects the speed of the base material feed using a photoelectric non-contact switch, and detects the speed of the base material feed by a predetermined number of times for a constant base material feed length. It is designed to emit a pulse. Next, 9 is a control device, which is a yarn feed detector A1.
Stitch number detector B1 Receives pulses sent from base fabric feed detector C, measures the number of stitches and yarn feed length for unit base fabric feed length, and compares these with preset reference values. When the permissible value is exceeded, a signal is sent, the ratio of PIV (continuously variable transmission) 10.11 is changed, and the rotation of the shear roller 2 and spike roller 8 is increased or increased by the pilot motor 12.13. The speed is reduced to provide corrective control of the tufting machine.

Next, FIG. 2 is a block diagram showing a control circuit of the control device 9, and its structure and operation will be explained below.

In the figure, A indicates a yarn feed detector, an X Bti stitch number detector, and a CFi fabric feed detector.

Next, reference numeral 14 is a reference value setting device, in which the reference number of stitches and reference yarn feed length for a unit basic fabric feed length are set in advance by a digital switch according to the color pattern of the carpet to be knitted. A value setting signal is given to the synchronous counter 15. In addition, the synchronous counter 15 receives and counts pulses transmitted from the fabric feed detector C in synchronization with the rotation of the spike roller 8, and calculates the unit fabric feed length set by the reference value setting device 14. When the number of pulses corresponding to the number of pulses has been counted, the gate 16 is opened and a reference value setting signal from the reference value setting device 14 is applied to the counters 17 and 18.

Next, the counter 17 calculates the number of pulses corresponding to the unit base fabric feed length counted by the synchronous counter 15,
The pulse sent from yarn feed detector A is then passed through gate 1.
6 is opened, the yarn feed length is measured relative to the unit base fabric feed length, the measured value is latched by the latch relay 19, and the decoder 20 converts it to the length of the fiber 6. Then, the pile length is digitally displayed on the magnification display 21 according to the magnification.

In addition, the counter 17 compares the measured value of the yarn feed length with respect to the unit base fabric feed length and the reference value, and calculates the deviation ([%
An error signal 22 corresponding to the error value is measured with an error value of
It is designed to transmit.

Further, the signal from the decoder 20 is multiplied by 10 through the encoder 24 (since FiIOα is used as the reference value in this device, it is multiplied by 10 to make 1m) and sent to the arithmetic circuit 2.
Sent to 5. This arithmetic circuit 25 receives signals from the number of threads to be used per meter (thread number setting device 26 to determine the constant), thread thickness setting device 27 (denier and count), and denier and number changeover switch 28. is inputted via the encoder 29.Then, the calculation circuit 25 calculates the thread feed length x number of threads x thread thickness, and measures the weight of the thread (with S) at points 1 to 1d. and decoder 30
It is displayed digitally on the basis weight display 31 via the .

It should be noted that the denier and count changeover switch 28 tlj is designed to switch because the display when inputting the thread thickness to the thread thickness setting device 27 shows that the denier and count are both different and the calculations are different. As for the thickness of the yarn, the actual basis weight can be displayed by digitally inputting the value actually measured using a conventional yarn thickness measuring device (not shown).

Next, 32 indicates a control upper limit setter, and 3311 indicates a control lower limit setter, and the deviation width of the yarn feed length from the standard value for the unit base fabric feed length is set in advance as an allowable value for C5. Then, when the error signal 22 exceeds the allowable value on the (G) side, the control upper limit setter 32 is activated, the command signal generator 34 sends multiple signals, and the deceleration command signal 36 is sent via the relay 35. It is now being sent. Also, conversely,
When the error signal 22 exceeds the allowable value on the (-) side, the control lower limit setter 33 is activated, a signal is transmitted from the command signal generator 37, and a speed increase command signal 39 is transmitted via the relay 38. It looks like this.

Then, the deceleration command signal 36 or the speed increase command signal 39 is sent to the pilot motor 12 to change the ratio i of PIVIO to decelerate or increase the rotational speed of the yarn roller 2, so that the error signal 22 becomes (±) The rotational speed of the yarn roller 2 is automatically corrected and controlled until it falls within the allowable value.

In addition, 40Fi indicates a stop upper limit setter, and 41 indicates a stop lower limit setter, which transmits a signal when the error signal 22 greatly exceeds the allowable value on the (G) side (→ side). Activates the stop signal generator 42 and generates the stop signal 4 via the relay 43.
4 is transmitted to turn off the main switch of the tufting machine, thereby preventing the tufting machine from malfunctioning.

Similarly, counter 18 is synchronous counter 15
The number of pulses and stitches corresponding to the unit fabric feed length counted by the hL pulse sent from detector B is counted while receiving the next gate pulse to measure the number of stitches for the unit fabric feed length. The measured value is latched by a latch relay 45, and the number of stitches is digitally displayed on a stitch number display 47 via a decoder 46.

In addition, the counter 18 compares the measured value of the number of stitches for a unit base fabric feed length with a reference value, and detects the deviation (toward).
−, and the error signal corresponding to the error value 4
It is designed to transmit 8.

Next, 49 indicates a control upper limit setter, and 50 indicates a control lower limit setter, in which the deviation width of the number of stitches from the reference value for the unit base fabric feed length is set in advance as an allowable value for (to)chi. When the error signal 48 exceeds the allowable value on the (1) side, the control upper limit setter 49 is activated, a signal is sent from the command signal generator 51, and a deceleration command is issued via the relay 52. A signal 53 is transmitted.

Conversely, if the error signal 48 exceeds the (-) side tolerance value,
The control lower limit setter 50 operates, the command signal generator 54 sends multiple signals, and the speed increase command signal 56 is sent via the relay 55.
is now being sent.

The deceleration command signal 53 or the speed increase command signal 56 is then sent to the pilot motor 13 to change the ratio of PIVll, thereby decelerating or increasing the rotational speed of the spike roller 80, so that the error signal 48 falls within the tolerance value of ω. The rotational speed of the spike roller 80 is automatically corrected and controlled up to the maximum speed.

Further, 57 indicates a stop upper limit setter, and 58 indicates a stop lower limit setter, which transmit a signal when the error signal 48 greatly exceeds the allowable value on the (G) side or (→ side). , actuates the stop signal generator 42 and generates the stop signal 44 via the relay 43.
This signal is used to turn off the main switch of the tufting machine, thereby preventing the tufting machine from malfunctioning.

In addition, between each command signal generator and relay 34-35 +37
Manual switches 59, 60, 61.62 are interposed between -38.51-52.54-55. , each independently receives the ``deceleration command signal 3''.
6, 5.3 or speed increase command signals 39, 56 can be sent to arbitrarily increase or decrease the rotational speed of the yarn roller 2 and spike roller 8. In addition, 63t: is a production quantity preset counter, in which the base fabric length corresponding to the preset production quantity is set with a digital switch, the received gate pulses are counted, and the number and unit of the gate pulses are calculated. The measured base fabric length is digitally displayed based on the base fabric feed length, and a signal is sent when the measured base fabric length reaches the base fabric length corresponding to the set production amount, and a stop signal is generated. A stop signal 44 is transmitted via a relay 43 to turn off the main switch of the tufting machine and to preset the production amount.

Next, FIG. 3 is a plan view of the operation panel, and 64
shows the manual main switch of the tufting machine. Further, 65 is a reset switch, which is operated when changing the reference value, 66 is a start button, and 67 is a reset switch.
indicate the power input lamps.

In addition, corresponding to the symbols shown in Fig. 2, 26 in the figure is a thread number setting device, 27 is a thread thickness setting device, 28Fi denier count changeover switch, 31H stitch weight indicator, and 47 stitch number indicator. , 2111 indicates a magnification display, and 63 indicates a production amount preset counter.

Similarly, 32 represents a control upper limit setter, 33 represents a control lower limit setter, 40 represents a stop upper limit setter, and 41 represents a stop lower limit setter.

Similarly, 49 indicates a control upper limit setter, 5o indicates a control lower limit setter, 57 indicates a stop upper limit setter, 58 indicates a stop lower limit setter, and 14 indicates a reference value setter. Note that the above 47.2], 26°27.3], 63, 32 on the control panel
, 33, 40, 41° 49.50, 57, 58.14 can be visually checked on a digital display.

In the figure, 32', 33', 40', 4 ]',
49'.

50'+57'158' are 32.33.40.4 respectively
1° 49.50, 57.58, which prevents any control operation or stoppage due to the occurrence of any error value when the error value corresponding to error signals 22 and 48 exceeds the allowable value. A light is displayed to indicate whether control is being performed.

Further, in the figure, numerals 59 and 60 indicate manual switches for decelerating and increasing the speed of the yarn roller, and numerals 61 and 62 indicate manual switches for decelerating and increasing the speed of the spike roller, respectively.

Next, the main operating procedures for the operation panel will be explained.

First, the manual main switch 64 of the tufting machine is turned ON, and the reference number of stitches and reference yarn feed length for a unit base fabric feed length are preset in the reference value setting device 14 according to the color pattern to be knitted. .

Next, control upper limit setter 32, 49, control lower limit setter 33
．． 50, Stop upper limit setter 40.57, Stop lower limit setter 4
Set 1.58 for each. In addition, by setting the production amount planned in advance on the production amount preset counter 63 and pressing the start button 66, the tufting machine starts operating and the production amount is continuously displayed on the production amount preset counter 63. The tufting machine will stop when the set production amount is reached. Also, during this period, if the measured values of the number of stitches for a unit base fabric feed length and the reference yarn feed length deviate from the reference values, the control upper limit setter 33, 49 or the control lower limit setter 33 is set depending on the degree.
．． Warning lamps 32', 49' corresponding to either of 50
Alternatively, 33' and 50' are lit to indicate this, and the rotational speed of the yarn roller 2 or spike roller 8 is automatically controlled for elevation.

Also, if the above measured value deviates by a wide margin above the standard value,
Stop upper limit setter 40.57 or stop lower limit setter 41.
The alarm lamp 40', 57' or 41', 58' corresponding to one of 58 lights up to indicate that, and
The tufting machine stops working. At this time, once the cause of the abnormality has been investigated and repairs have been completed, the tufting machine can be operated again by pressing the start button 66 again. In addition, manual switches 59 and 6 may be used as necessary.
It goes without saying that by operating 0°61.62, the rotational speeds of the yarn roller 2 and spike roller 80 can be controlled to slow down or speed up regardless of the reference value.

On the other hand, the basis weight of 1 m' is displayed on the basis weight display 31,
This makes it easy to judge whether the specified weight has been achieved.

Also, to reset the reference value, press the reset switch 6.
All you have to do is press 5 and reset each set value as rOJ.

If the numerical value displayed on the basis weight display 31 increases or decreases from the reference value, take action by changing the number of stitches, the yarn feed length, or both.

That is, the magnification (length of yarn used) R can be determined by the following formula.

However, P = pile length S = stitch stitch Therefore, either the number of stitches is controlled by changing the settings of the upper limit setter 49 and the lower limit setter 50, or the yarn feed length is controlled by the upper limit setter 32. The multiplier is changed by changing either the set value of the control lower limit setter 33 or both.

As specifically explained above, in the present invention, the number of yarns used and the thickness of the yarn are input into the calculation circuit 25, and the length of the yarn from the yarn feed detector A is input into the calculation circuit 25. , the basis weight for 1d can be calculated and displayed digitally.

Therefore, there is no need to cut the woven carpet and make actual measurements as in the past, and measures can be taken based on the display, so woven carpets are not wasted and loss of work and time can be eliminated. .

Next, the second embodiment will be explained in detail based on the drawings shown in FIG. The yarn feed length is previously set in a reference value setter 14' using a digital switch, and a signal for setting the reference value is given to the synchronous counter 15. Further, the synchronous counter 15 receives and counts pulses corresponding to the number of reciprocations of the needle 5 corresponding to the number of stitches transmitted from the stitch number detector B in synchronization with the rotation of the stitch seam shaft 4, and sets the standard. When the number of pulses corresponding to the number of unit stitches set by the unit 14 has been counted, the gate 16 is opened and a reference value setting signal from the reference value setting unit 14' is applied to the counters 17 and 18. .

Next, counter 17Fi, synchronous counter 1
The number of pulses corresponding to the number of unit stitches counted by 5 and the number of pulses transmitted from thread feed detector A are counted until the gate 16 is opened next, and the thread feed length for the number of unit stitches is determined. is measured, the measured value is latched by a latch relay 19, converted to a pile length by a decoder 20, and a magnification display 21 digitally displays the pile length by a magnification.

Therefore, the counter 17 compares the measured value of the yarn feed length for the unit stitch number with the reference value, and determines which one is C.
Measurement is performed with an error value of +3%, and an error signal 31 corresponding to the error value is transmitted. Further, in the control upper limit setter 32 and the control lower limit setter 33, the deviation width of the yarn feed length from the reference value for the number of unit stitches is set in advance as a permissible value of (g).

On the other hand, the counter 18 receives the number of pulses corresponding to the number of unit stitches counted by the synchronous counter 15 and the number of pulses transmitted from the base fabric feed detector C, and then the gate 1
6 is opened, the base fabric feed length for the number of unit stitches is measured, the measured value is sent to the latch relay 45, and the base fabric feed length is based on the base fabric feed length via the decoder 46. The fabric feed/length indicator 47' is designed to digitally display the length.

Further, the counter 18 compares the measured value of the base fabric feeding length for the number of unit stitches with the reference value, measures the deviation by an error value of cBchi, and outputs an error signal 48 corresponding to the error value.
It is designed to transmit.

Further, the control upper limit setting device 49 and the control lower limit setting device 50 each have a reference value '6' for the base fabric feed length for the number of unit stitches.
The deviation width of A is set in advance as an allowable value of C1.

In addition, 63 in Figures 4 and 5 is a production volume preset counter, which converts the number of stitches corresponding to the preset production volume into base fabric length and sets it using a digital switch.
The received pulses from the gate 16 are counted, and the number of stitches measured from the number of pulses and the number of unit stitches is converted to the length of the base fabric and displayed digitally, and the digitally displayed length of the base fabric is the set production amount. The stop signal generator 4 sends a signal when the base fabric length corresponding to .
2 is activated, a stop signal 44 is sent via a relay 43, the main switch of the tufting machine is turned off, and the production amount is preset.

Since the other parts are the same as those in the first embodiment, the same reference numerals are given and the explanation will be omitted.

[Brief explanation of drawings]

Fig. 1 is a conceptual diagram showing the principle of the date measurement method for a tufting machine according to the first embodiment of the present invention, Fig. 2 is a circuit diagram showing its control circuit, and Fig. 3 is an operation diagram. FIG. 4 is a block diagram showing the control circuit of the second embodiment, and FIG. 5 is a plan view of the operation panel of the second embodiment. 1 is the base fabric, 2 is the yarn roller, 3 is the thread, 4 stitch shafts, 5 is the needle, 6 is the pile, 7 is the tufted fabric, 8
/ri spike roller, 9 is the control device, 10.11 is P
IV (continuously variable transmission), 12.13 is the pilot motor,
14.14' is a reference value setter, 15 is a synchronous counter, 16 is a gate, 17.18 is a counter, 19
．． 45 is a latch relay, 20.46 is a decoder, 21 is a magnification display, 22.48 is an error signal, 24.29 is an encoder, 25Fi calculation circuit, 26Fi thread number setting device, 2
7 is a thread thickness setting device, 28 is a denier and count changeover switch, 30 is a decoder, 31 is a fabric weight indicator, 32°49 is a control upper limit setting device, 33.50 is a control lower limit setting device, 34.
38, 51.54 is a command signal generator, 35.38, 43
, 52, 55 are relays, 36° 53 is a deceleration command signal, 3
9.56Fi speed increase command signal, 40.57 is stop upper limit setter, 41.58 is stop□...::1 lower limit setter, 42 is stop signal generator, 44II'i stop signal, 47 stitch number Display, 47'H base fabric feed length indicator, 59, 60, 61, 62 manual switch, 63
Fi production amount preset counter, 64 is manual main switch, 65 is reset switch, 66 is start button, 67 is power input lamp, 32.33.40,41,
49, 50, 57° and 58' are alarm lamps, 8 is a thread feed detector, a B stitch number detector, and a CFi base fabric feed detector. Patent applicant Fuku 1) Tsutomu

Claims (1)

[Claims] The unit base fabric feed length or at least the standard thread feed length for the unit stitch number is set in advance, and when the detection signal of the base fabric feed detector and the set value match, the game is started.
The gate is opened to 0, and while this gate is open, the length of the thread detected by the thread feed detector is input to the arithmetic circuit.On the other hand, the number of threads and the thickness of the thread are input to the arithmetic circuit. A method for measuring the basis weight of a tufting machine, characterized in that inputs from three parties are calculated by an arithmetic circuit and the results are displayed on a basis weight display.