JP3042138B2 - Weft insertion control device in jet loom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the injection of a weft thread released from a pull-out preventing action of a weft pull-out preventing means which can be switched between a state in which the pull-out of a weft is blocked and a state in which the pull-out is permitted. The present invention relates to a weft insertion control device in a jet loom that performs injection weft insertion by an action.

[0002]

2. Description of the Related Art In a jet loom, achieving a good weft insertion state in which a weft reaches a predetermined weft insertion end position at a predetermined time is important for weaving a high-quality woven fabric. The control factors that affect the control include, for example, the weft insertion start time and the injection timing of the weft insertion nozzle. Japanese Unexamined Patent Publication No. 62-117853 discloses that the actual weft tip arrival timing at a predetermined weft tip arrival position within a weaving width region is compared with a preset arrival timing, and based on the comparison result, a winding type weft is used. There is disclosed a weft insertion control means for controlling the start timing of the weft release of the weft locking pin on the length measuring storage device.

In this weft insertion control, the weft insertion start time is changed by a predetermined time when the weft leading end to the predetermined position is late, and when the weft leading end arrives at the predetermined position early, the weft insertion time is changed by the same time. The start time has been delayed.

[0004]

However, there are three cases in which the leading end of the weft reaches the predetermined position on the weft insertion start end side: normal, slow, and early. In the case of the start of weft insertion, there are three similar states. . Therefore, there are only nine combinations of such a weft insertion start state and a weft leading end arrival state,
Furthermore, there are countless weft insertion states that can be grasped in consideration of the degree of deviation from the setting time. Therefore, the conventional simple weft insertion control method cannot achieve fine weft insertion control suitable for various weft insertion states.

[0005] The present invention utilizes the empirical rules of a skilled worker to set the weft insertion start time and the weft leading end arrival time, and weft insertion conditions such as the weft insertion start time and the injection timing of the weft insertion nozzle. An object of the present invention is to provide a weft insertion control device in a jet loom that can optimally set control elements.

[0006]

For this purpose, in the first invention, the weft insertion control device in the jet loom includes a data input means for data relating to weft insertion, such as a weft insertion start time and a weft leading end arrival time, and a weft insertion time. And control element determining means for determining a control element of the device relating to weft insertion such as a weft insertion fluid injection timing based on input data from the data input means. Means for selecting a control element for the input data based on a specific correspondence between a plurality of data order groups in which data is classified according to order rules and a plurality of control element order groups in which the control elements are classified according to order rules It has.

In the second invention, the data inputted to the data input means relating to the weft insertion includes the type of the weft and the thickness of the weft. In the third invention, the control elements relating to the weft insertion are an operation start time and a stop time of the device relating to the weft insertion.

According to a fourth aspect of the present invention, the weft released from the pull-out preventing function of the weft pull-out preventing means, which can be switched between a state in which the pull-out of the weft is blocked and a state in which the pull-out is permitted, is injected by the weft insertion main nozzle. In the jet loom for injection weft insertion, weft insertion start time detection means for detecting the weft insertion start time, weft tip arrival time detection means for detecting the weft tip arrival time at a predetermined weft insertion position, and the weft insertion start time and The weft withdrawal prevention and release timing of the weft withdrawal prevention means, which controls the arrival timing of the weft tip, the weft insertion state control elements such as the injection timing of the weft insertion main nozzle, the detected weft insertion start timing data and the weft tip. Control element determining means for determining based on the arrival time data, and A detection data sequence group comprising a plurality of weft insertion arrival time data sequence groups obtained by classifying the weft tip arrival time data obtained by classifying the weft tip arrival time data by a predetermined order rule. And the weft insertion start time data and the weft tip arrival time data based on a specific correspondence between a plurality of control element order groups obtained by classifying the weft insertion state control elements according to a predetermined order rule. The function of selecting the weft insertion state control element for the control element is given to the control element determination means.

[0009]

[Action] Weft insertion start time data is classified into a plurality of weft insertion start time data order groups according to the order rule of "early", "somewhat early", "normal", "somewhat late", and "late". Is done. The weft tip arrival time data is, for example, "early",
They are classified into a plurality of weft tip arrival time data order groups having order rules of "somewhat early", "normal", "somewhat late", and "late". Also, the weft insertion state control elements such as the weft extraction prevention release time of the weft extraction prevention means and the injection start timing of the weft insertion main nozzle are “slow”, “somewhat late”, “normal”, “somewhat early”, It is classified into a plurality of control element order groups with an order rule such as “early”. The detected data sequence group, ie, the weft insertion start time data sequence group and the weft tip arrival time data sequence group, and the control element sequence group are linked by a specific correspondence based on an empirical rule. Based on the relationship, control elements for detection data such as weft insertion start time data and weft tip arrival time data are determined.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG. Reference numeral 1 denotes a weft measuring and storing device of a winding type. The weft Y measured and stored by the weft measuring and storing device 1 is injected into the weft by a main nozzle 2A for weft insertion, and a plurality of auxiliary nozzle groups 3 for weft insertion. , 4, and 5 relay injections. A tandem nozzle 2B is interposed between the weft length measuring and storing device 1 and the weft insertion main nozzle 2A. The weft yarn Y is propelled by a tandem nozzle 2B and ejected from a weft insertion main nozzle 2A.

When the weft insertion is performed well, the weft is detected by the weft detector 6 comprising a reflection type photoelectric sensor, and the operation of the loom is continued. If the weft detector 6 does not detect the presence of a yarn, the operation of the loom is stopped.

A weft yarn is prevented from being pulled out from the yarn winding surface 1a of the weft length measuring and storing device 1 and unwinding is performed by a locking pin 7a.
This is performed by exciting and demagnetizing the electromagnetic solenoid 7 that drives the motor. Excitation / demagnetization control of the electromagnetic solenoid 7 is performed in accordance with a command from the control computer C. The control computer C controls excitation / demagnetization of the electromagnetic solenoid 7 based on a machine rotation angle detection signal from the rotary encoder 8.

In the vicinity of the yarn winding surface 1a, a weft unwind detector 9 composed of a reflection type photoelectric sensor is arranged, and the weft Y unwound from the yarn winding surface 1a is unwound by the weft unwind detector 9. Is detected. When the number of unwinds detected by the weft unwind detector 9 reaches a set number, the control computer C instructs demagnetization of the electromagnetic solenoid 7, and the locking pin 7a engages with the yarn winding surface 1a to prevent the weft from being pulled out. .

[0014] The pressure air jet of the main nozzle 2A for weft insertion is controlled by the demagnetization of the electromagnetic valve V _1, the pressure air injection of the tandem nozzle 2B is controlled by the demagnetization of the electromagnetic valve V _2. Pressurized air injection in the weft insertion auxiliary nozzle groups 3-5 are controlled by the demagnetization of the electromagnetic valves _{V 3, V 4, V 5} . The electromagnetic valves V ₁ and V ₂ are connected to a pressure air supply tank 10, and the electromagnetic valves V _{3 to} V ₅ are connected to a pressure air supply tank 11. Excitation / demagnetization control of each of the electromagnetic valves V _{1 to} V ₅ is performed by a command from the control computer C. The control computer C controls each of the electromagnetic valves V _{1 to} V ₅ based on a machine rotation angle detection signal from the rotary encoder 8. Command excitation and demagnetization.

A curve D in FIG. 2 represents an ideal running state of the weft. The machine base rotation angle To indicates the reference weft insertion start time,
The machine base rotation angle Tw represents the target arrival time at the predetermined weft insertion end position of the leading end of the weft Y, that is, the installation position of the weft detector 6.

The machine rotation angle range [# ₁₁ , # ₁₂ ] indicates the timing of the excitation and demagnetization of the electromagnetic solenoid 7. Machine rotation angle range [Θ
_21, theta _22] represents the demagnetization timing of the electromagnetic valve V _1, the machine base rotation angle range [Θ _31, Θ _32] represents the demagnetization timing of the electromagnetic valve V _2. Also, the machine rotation angle range [α _i , β _i ] (i
= 1 to 3) indicate the demagnetization timing of the solenoid valve Vi _{+ 2} .

A machine rotation angle Θ ₁₁ representing the excitation start time of the electromagnetic solenoid 7, a machine rotation angle Θ ₂₁ representing the injection start time of the weft insertion main nozzle 2 A, and a machine rotation representing the injection start time of the tandem nozzle 2 B. The machine rotation angle β ₂ representing the angle Θ ₃₁ and the injection stop timing of the weft insertion auxiliary nozzle group 4 is changed and controlled by the control computer C. Based on the weft insertion start time To _j detected by the weft unwind detector 9 and the weft leading end arrival time Tw _j detected by the weft detector 6, the control computer C outputs
_11, the injection start timing of the main nozzle 2A weft inserting theta _21, controls the injection termination timing beta ₂ of the injection start timing of the tandem nozzle 2B theta ₃₁ and the weft insertion auxiliary nozzle groups 4. These timings { ₁₁ , # ₂₁ , # ₃₁ , β2} are weft insertion state control elements, and the control computer C controls the timings {1, # ₂₁ , # ₃₁ , # ₂ } based on the control element determination programs shown in the flowcharts of FIGS.
_{11, Θ 21, Θ 31,} to determine the beta _2.

The functions g ₁ , g ₂ , g ₃ , g ₄ , g _{5 in FIG.}
Is a weft insertion start time data group G ₁ , G ₂ , G ₃ , G in which the weft insertion start time To _j is classified according to the size rule.
_4, in which it is set corresponding to G _5. The weft insertion start data sequence group _Gm (m = 1 to 5) is a set of the following weft insertion start timings.

G₁= “Early” weft insertion start angle (Θ₁~ Θ_Two) G_Two= "Slightly earlier" weft insertion start angle (Θ₁~ To) G_Three= “Normal” weft insertion start angle (Θ_Two~ Θ_Three) G_Four= "Slightly slow" weft insertion start angle (To ~ Θ_Four) G_Five= “Slow” weft insertion start angle (Θ_Three~ Θ_Four) However, Θ₁<Θ_Two<To <Θ_Three<Θ_FourIt is. Each of these
Machine rotation angleΘ₁, Θ _Two, To, Θ_Three, Θ_FourIs an input device
12 to the control computer C.

Function g_m(M = 1 to 5) indicates the weft insertion start time
Data order group G_mRepresents the accuracy of the group element x in. FIG.
Function h₁, H_Two, H_Three, H_Four, H_FiveIs at the weft end
Period Tw_jOf weft ends classified according to large and small order rules
Arrival data sequence group H₁, H_Two, H_Three, H _Four, H_FiveTo
It is set accordingly. Weft end arrival time data
Order group H_n(N = 1 to 5) is when the weft end reaches
It is a gathering of the period.

H₁= “Early” weft tip arrival time (Θ_Five~ Θ₆) H_Two= "Slightly early" weft tip arrival time (Θ_Five~ Tw) H_Three= "Normal" weft tip arrival angle (Θ₆~ Θ₇) H_Four= "Slightly slow" weft tip arrival angle (Tw-Θ₈) H_Five= "Slow" weft tip arrival time (Θ₇~ Θ₈) However, Θ_Five<Θ₆<Tw <Θ₇<Θ₈It is. Each of these
Machine rotation angleΘ_Five, Θ ₆, Tw, Θ₇, Θ₈Is an input device
12 to the control computer C.

The function h _n (n = 1 to 5) represents the accuracy of the group element y in the weft leading edge arrival time data order group H _n . The functions f ₁₁ , f ₁₂ , f ₁₃ , f ₁₄ , and f ₁₅ in FIG. 5 are excitation start time change amount data order groups A in which the excitation start time change amount data relating to the electromagnetic solenoid 7 is classified according to the order of magnitude.
₁ , A ₂ , A ₃ , A ₄ , and A ₅ are set. Excitation start time change amount data order group A _a (a = 1
5) are the following sets of machine base rotation angle change amounts.

A ₁ = “large” positive angle change amount (δ _{11 to} δ ₁₂ ) A ₂ = “somewhat large” positive angle change amount (δ _{11 to} 0) A ₃ = “normal” angle change amount (Δ ₁₂ to −δ ₁₃ ) A ₄ = “somewhat large” negative angle change (0−−δ ₁₄ ) A ₅ = “large” negative angle change (−δ ₁₃ to −δ ₁₄ ) −δ ₁₄ <−δ ₁₃ <0 <δ ₁₂ <δ ₁₁

The angle change amount data sequence group A _a is an element for controlling the weft insertion state, the function _{f 11, f 12, f 13} ,
f _14, f ₁₅ represents the accuracy of the group elements in weft insertion state control element order group A _a.

The functions f ₂₁ , f ₂₂ , f ₂₃ , f ₂₄ , f _{25 in FIG.}
Excitation start time change amount data relates to an electromagnetic valve V ₁ is,
That it is set corresponding to the injection start timing data timing injection start classified with ordering rules of the magnitude of the change amount data sequence group _{B 1, B 2, B 3} , B 4, B 5 of the main nozzle 2A weft inserting It is a thing. The injection start timing change amount data sequence group _Bb (b = 1 to 5) is a group of the following machine body rotation angle change amounts.

B ₁ = “large” positive angle change amount (δ _{21 to} δ ₂₂ ) B ₂ = “somewhat large” positive angle change amount (δ _{21 to} 0) B ₃ = “normal” angle change amount (Δ ₂₂ to −δ ₂₃ ) B ₄ = “somewhat large” negative angle change (0 to −δ ₂₄ ) B ₅ = “large” negative angle change (−δ ₂₃ to −δ ₂₄ ) −δ ₂₄ <−δ ₂₃ <0 <δ ₂₂ <δ ₂₁ is satisfied.

The injection start timing change amount data sequence group B _b is an element for controlling the weft insertion state, the function f _21,
f ₂₂ , f ₂₃ , f ₂₄ , f ₂₅ are the weft insertion state control element sequence group B
represents the accuracy of the group element in _b .

The functions f ₃₁ , f ₃₂ , f ₃₃ , f ₃₄ , f _{35 in FIG.}
Is the excitation start time change amount data for the electromagnetic valve V ₂ ,
That is, the injection start timing data in the tandem nozzle 2B is set according to the injection start timing change amount data order group C ₁ , C ₂ , C ₃ , C ₄ , C ₅ classified according to the order rule of magnitude. is there. The injection start timing change amount data sequence group C _c (c = 1 to 5) is a group of the following angle change amounts.

C ₁ = “large” positive angle change (δ _{31 to} δ ₃₂ ) C ₂ = “somewhat large” positive angle change (δ _{31 to} 0) C ₃ = “normal” angle change (Δ ₃₂ to −δ ₃₃ ) C ₄ = “somewhat large” negative angle change (0 to −δ ₃₄ ) C ₅ = “large” negative angle change (−δ ₃₃ to −δ ₃₄ ) - [delta ₃₄ <a _{-δ 33 <0 <δ 32 <} δ 31.

The injection start timing change amount data order group C _c is an element for controlling the weft insertion state, the function f _31,
f ₃₂ , f ₃₃ , f ₃₄ , f ₃₅ are weft insertion state control element sequence groups C
Represents the accuracy of the group element in _c .

The functions f ₄₁ , f ₄₂ , f ₄₃ , f ₄₄ , f _{45 in FIG.}
Is an injection stop timing change amount data sequence group D ₁ , D _{2 in which the} demagnetization time change amount data relating to the electromagnetic valve V ₄ , that is, the injection stop timing change amount data in the weft insertion auxiliary nozzle group 4 are classified according to a large or small order rule. , D ₃ , D ₄ , and D ₅ . The injection stop timing change amount data order group D _d (d = 1 to 5) is a group of the following angle change amounts.

D ₁ = “large” positive angle change amount (δ _{41 to} δ ₄₂ ) D ₂ = “somewhat large” positive angle change amount (δ _{41 to} 0) D ₃ = “normal” angle change amount (Δ ₄₂ to −δ ₄₃ ) D ₄ = “somewhat large” negative angle change (0 to −δ ₄₄ ) D ₅ = “large” negative angle change (−δ ₄₃ to −δ ₄₄ ) −δ ₄₄ <−δ ₄₃ <0 <δ ₄₂ <δ ₄₁

The injection stop timing change amount data order group _Dd is an element for controlling the weft insertion state, and includes a function f ₄₁ ,
_{f 42, f 43, f 44} , f 45 weft insertion state control element order group D
Represents the accuracy of the group element in _d .

The order groups G _m , H _{n of} the detected data, ie, the weft insertion start time To _j and the weft leading end arrival time Tw _j , and the control element order groups A _a , B _b , C _c , D _d are connected to the locking pins 7a. This is based on the empirical rules of the skilled person who performs the work of setting the appearance / injection timing and the injection timing of the engine, and also classifies the control element sequence groups A _a , B _b , C _c , and D _d. It is performed in light of the above. The correspondence between the detected data order groups G _m , H _n and the control element order groups A _a , B _b , C _c , D _d is specified by the rule R _{m, n} in the following table (1), and the rule of thumb of the expert Is included in the rule R _{m, n} .

[0035]

[Table 1]

The control computer C includes a weft detector 6 and a weft
In the detection data obtained from the yarn unwinding detector 9 and Table (1),
Rule R shown_{m, n}Using FIGS. 15 to 21
The control element determination program shown in FIG. Control con
Pewter C starts weft insertion obtained from weft unwinding detector 9
Time To_jAnd the weft end obtained from the weft detector 6
Timing Tw_jIs sampled in a predetermined number N units,
The average values x and y for each of the ringing numbers N are calculated. Control computer
Data C is the weft insertion opening to which the calculated weft insertion start time x belongs.
Start time data order group G_mAnd at the calculated weft end
Weft end arrival time data sequence group H to which period y belongs_nGrasp
Group G to grip and belong to_m, G_{m + 1}Function g corresponding to_m, G
_{m + 1}And group H_n, H_{n + 1}Function h corresponding to_n, H
_{n + 1}From accuracy g_m(x), g_{m + 1}(x), h_n(y), h_{n + 1}(y)
Is calculated. In the examples of FIGS. 3 and 4, x is an ordered group G_Two, G
_ThreeAnd y is an ordered group H_Three, H_FourBelongs to. Soshi
And the group G of x_Two, G_ThreeThe accuracy at is g_Two(x), g
_Three(x) and the group H of y_Three, H _FourThe accuracy at is h
_Three(y), h_Four(y).

The control computer C determines the groups G ₂ , G belonging to x.
Table (1) shows the rules corresponding to the groups H ₃ and H ₄ belonging to ₃ and y.
Choose from The rules in this case are R ₂₃ , R ₂₄ , R ₃₃ , R
₃₄ .

The rules R ₂₃ , R ₂₄ , R ₃₃ and R ₃₄ are set, for example, as follows. R ₂₃ ... control element order group _{A 2, B 2, C 2} , D 3 selected R ₂₄ ... control element order group _{A 3, B 3, C 3} , D 2 selected R ₃₃ ... control element order group A _3, B ₃ , C ₃ , D ₃ selection R ₃₄ ... Control element sequence group A ₃ , B ₃ , C ₃ , D ₂ selection The accuracy is the maximum value selection for all rules R _{m, n} .

Therefore, the amount of change of the excitation start timing of the electromagnetic solenoid 7 is controlled by the control element sequence groups A ₂ and A _{3 as} shown in FIG.
, And the accuracy Pa and Qa are g ₂ (x) and g ₃ (x). The change amount of the injection start timing in the weft insertion main nozzle 2A is in the control element sequence groups B ₂ and B ₃ as shown in FIG.
The accuracy Pb and Qb are g ₂ (x) and g ₃ (x). The change amount of the injection start timing of the tandem nozzle 2B is in the control element order groups C ₂ and C ₃ as shown in FIG. 7, and the accuracy Pc and Qc are g
₂ (x) and g ₃ (x). The change amount of the injection stop timing in the auxiliary nozzle group 4 is controlled by the control element sequence group D as shown in FIG.
₂ and D ₃ , and the accuracy Pd and Qd are h ₄ (y) and g ₃ (x).

Based on the selected control element order groups A ₂ and A ₃ and the accuracy g ₂ (x) and g ₃ (x), the control computer C determines the area centroid K (z ₁ ) Is calculated. The control computer C calculates the calculated area centroid K
(Z ₁₎ to set the machine base rotational angle change amount z ₁ corresponding as weft insertion start timing change amount, to change the weft insertion start timing theta ₁ until it theta ₁ + z _1.

Injection opening at the main nozzle 2A for weft insertion
Start time change amount z_Two, Injection opening in tandem nozzle 2B
Start time change amount z_ThreeAnd injection stop in auxiliary nozzle group 4
Time change amount z_FourIs a combination of the control element sequence group and the accuracy [B
_Two, B_Three, G_Two(x), g_Three(x)], [C_Two, C_Three, G_Two(x),
g_Three(x)] and [D_Two, D_Three, H_Four(y), g_Three(x)]
Is calculated in the same manner as described above. Start of detection weft insertion in Fig. 9
x is earlier than in the case of FIG.
The arrival time y indicates a state that is later than that in FIG. 9 and 1
Each change amount z obtained from 0 detection data₁, Z_Two,
z_Three, Z_FourAre shown in FIGS.
8 is clearly different from the change amount. That is, the detection data
Even if the difference between x and y is slight,
Further z₁, Z _Two, Z_Three, Z_FourIs different
Control becomes possible.

The weft insertion state represented by the detection data x, y in FIGS. 3 and 4 has the same tendency as the weft insertion state represented by the detection data x, y in FIGS. 9 and 10. Showa 6
In the weft insertion control system of Japanese Patent Application Laid-Open No. 2-178553, there is no difference in the control degree, and it cannot be said that proper weft insertion control is performed. However, according to the control method of the present embodiment, fine weft insertion control is performed according to the difference between the detection data x and y, and good weft insertion control is possible if the rules R _{m, n} are appropriately set. Becomes

Although the rule R _{m, n} is set in light of the rules of thumb of a skilled person, such rules of skill of a skilled person are very accurate. The setting of the rule R _{m, n} is easy in light of the empirical rules of a skilled person, and the experiment was conducted to determine when to start exciting the electromagnetic solenoid 7, when to start injection from the nozzles 2A and 2B, and when to stop injection from the auxiliary nozzle group 4. It is no longer necessary to rely on the time-consuming task of specifying the information. In particular, four output data z ₁ , z ₂ ,
In the work of identifying z ₃ and z ₄ by experiments, the number of combinations is innumerable, and it is almost impossible to perform such experimental work as a practical problem. However, in the present embodiment, four output data z ₁ , z ₂ , z ₃ , and z ₄ can be easily specified for two input data x and y only by the rule of thumb of a skilled person.

The present invention is, of course, not limited to the above-described embodiment. For example, the excitation start timing of the electromagnetic solenoid 7, the injection start timing of the weft insertion main nozzle 2A, the injection start timing of the tandem nozzle 2B, and the auxiliary nozzle group An embodiment in which only one of the four injection stop timings is changed and controlled is also possible.

Although the above embodiment shows an example of weft insertion control during operation of the loom, the present invention selects the control element of the weft insertion control unit even at the initial setting before the operation of the loom,
It is also possible to modify to set. That is, the data relating to the weft insertion is supplied to the detectors 6, 9 as in the above embodiment.
Instead of inputting this as data from the user, the target data is manually input by an operator or the like, and based on that, the control element of the weft insertion control unit is selected and automatically set in the same manner as in the above-described embodiment. be able to. Then, after driving the loom by the value automatically set, as in the above embodiment, the input data relating to the weft insertion start timing the To _j and weft leading end arrival timing Tw _j from the detector 6 and 9 to the control computer C Then, various timings of the weft insertion control unit can be corrected based on the value obtained as a result.

[0046] Further, in the above embodiment, as the input data to the data input means, although using a weft insertion start timing the To _j and weft leading end arrival timing Tw _j, in addition, the type of weft, the weft thick Or, it can be modified to use a weaving width, a diameter of a weft measuring drum, and the like as data input by an operator or the like, and to create a plurality of data order groups in which each data is classified according to an order rule. .

Further, in the present invention, in addition to the injection start timing and the injection stop timing for the weft insertion main nozzle 2A, the tandem nozzle 2B, and the auxiliary nozzle group 4, the electromagnetic characteristics of the weft length measuring and storing device 1 are controlled. It can be modified to use the operation start time and the operation stop time of the solenoid 7 and the electromagnetic cutter for weft cutting.

That is, with respect to the above modified example, FIGS.
6, the types of yarns are classified into a spun type and a filament type, and for each type of yarn, the initially set yarn thickness, the weft insertion start time To, and the weft leading end arrival time Tw
Are created as shown in FIGS. 22 to 24, respectively. When creating, the order rule or fuzzy set of large and small, for example, about the thickness of the cotton yarn of the span system,
“Very thin”, “thin”, “normal”, “thick”, “very thick”, and the weft insertion start time To and the weft tip arrival time Tw are “early”,
"Slightly early", "normal", "somewhat slow", "slow".

Initially set yarn count, weft insertion start time T
o and the weft yarn cutting time Tw
ON / OFF timing of the cutter 20 (see FIG. 1)
If-then rules are created to determine
Is based on the rule of thumb of a skilled person. For example, cotton yarn
An example of the if-then rule in the case is as follows.
The thread thickness is “Normal”, To “Normal”, Tw “Normal”
And then cutter ON timing "normal", OFF cutter
Imming “normal”, rule 2 if Thread thickness “thick”
So, To “somewhat faster” and Tw “normal”, then
The ON timing is “early” and the OFF timing is
This if-then rule is a span system
Not only for filament wefts, but also for weft insertion
Main nozzle 2A, weft insertion auxiliary nozzle group 4, tandem
Each of the nozzle 2B and the locking pin 7a of the weft measuring and storing device 1
Magnetic valve V₁, V_Two, V _FourAnd electromagnetic solenoid 7 ON
(Cutter operation start), OFF (Cutter operation stop)
Created for imming. The number of fuzzy sets is
Thickness, weft insertion start time and weft tip arrival time
There are 5 types each, so 125 types
Rules are created. Each solenoid valve V₁, V_Two, V_FourNitsu
The fuzzy set is the same as in the previous embodiment.

22 to 24, for example, when the yarn count of the cotton yarn is initially set to 30, the weft insertion start time To is 88 °, and the weft tip arrival time Tw is set to 233 °,
If the thread count “30” is applied to the Y axis of the thread thickness membership function in FIG. 22 and the accuracy or membership function value for each belonging group is determined, “normal” 0.6, “thick”
And similarly from FIG. 23, the weft insertion start time To
24, the membership function value of the weft tip arrival time Tw is “normal” 0.7, “slightly late” 0.
3. This is applied to the above-mentioned if-then rule to make an inference to derive ON / OFF timing of the weft cutting cutter 20 and the like. At the time of derivation, the initially set yarn thickness, weft insertion start time To, and weft tip arrival time T
ON small value of Y axis of membership function of w ON, OF
The Y-axis value of the membership function of the F timing is used.
Then, when there are a plurality of conclusions of the ON / OFF timing, a large value on the Y axis of the membership function is taken.

In other words, when applied to the if-then rule that satisfies the above-mentioned conditions and takes a small value on the Y axis, Rule 1, the cutter ON timing “normal” min [0.6
, 0.6, 0.7] = 0.6 Cutter OFF timing "normal" min [0.6, 0.6, 0.
7] = 0.6 Rule 2 Cutter ON timing “early” min [0.5
, 0.4, 0.7] = 0.4 Cutter OFF timing "normal" min [0.5, 0.4, 0.
7] = 0.4. Therefore, if a large value of the accuracy of the membership function of To and Tw is selected, as shown in FIGS. 25 and 26, the cutter ON timing “normal” 0.6 “early” 0 .4 Cutter OFF timing "normal" max [0.6, 0.
4] = 0.6. Therefore, the area center of gravity of the hatched portion shown in FIGS. 25 and 26 is calculated as in the above-described embodiment, and the values on the X axis where the perpendiculars intersect, that is, 24 ° and 50 ° are the cutter ON / OFF timing. Becomes the initial setting value. And
In fact, from the start of operating the loom default value for this such as, by using the data of the timing weft insertion start obtained from the detector 6, 9 the To _j and weft leading end arrival timing Tw _j, if-th
An en rule is created, and the set values of various ON / OFF timings of the weft insertion system are obtained again by the above-described procedure, and these are set as new set values.

[0052]

As described above in detail, the present invention classifies a plurality of weft insertion start time data order groups in which weft insertion start time data is classified according to order rules and weft leading end arrival time data according to order rules. A specific correspondence based on empirical rules between a detected data sequence group consisting of a plurality of weft tip arrival time data sequence groups and a plurality of control element sequence groups in which weft insertion state control elements are classified according to a sequence rule Control elements for detection data are selected based on the relationship,
The control elements of the control element order group classified according to the rule of thumb of the expert are properly and uniquely selected,
An excellent effect is obtained that an appropriate weft insertion state control element can be determined without relying on a very troublesome operation of specifying based on experimental data.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a weft insertion device.

FIG. 2 is a graph showing a weft insertion control state.

FIG. 3 is a graph showing the accuracy of an order group of detection data, ie, a weft insertion start time.

FIG. 4 is a graph showing the accuracy of an ordered group of detection data, ie, a weft leading end arrival time.

FIG. 5 is a graph showing the accuracy of the order group of the weft insertion state control elements as the amount of change in the excitation start time of the electromagnetic solenoid.

FIG. 6 is a graph showing the accuracy of an order group of weft insertion state control elements, which is an injection start timing change amount of a weft insertion main nozzle.

FIG. 7 is a graph showing the accuracy of the order group of the weft insertion state control elements as the injection start timing change amount of the tandem nozzle.

FIG. 8 is a graph showing the accuracy of the order group of the weft insertion state control elements as the injection stop timing change amount of the auxiliary nozzle group.

FIG. 9 is a graph showing the accuracy of the order group of the detection data, ie, the weft insertion start time.

FIG. 10 is a graph showing the accuracy of the order group of the detection data, ie, the weft tip arrival time.

FIG. 11 is a graph showing the accuracy of the order group of the weft insertion state control elements as the amount of change in the excitation start time of the electromagnetic solenoid.

FIG. 12 is a graph showing the accuracy of the order group of the weft insertion state control elements as the injection start timing change amount of the weft insertion main nozzle.

FIG. 13 is a graph showing the accuracy of the order group of the weft insertion state control elements as the injection start timing change amount of the tandem nozzle.

FIG. 14 is a graph showing the accuracy of the order group of the weft insertion state control elements as the injection stop timing change amount of the auxiliary nozzle group.

FIG. 15 is a flowchart illustrating a control element determination program.

FIG. 16 is a flowchart illustrating a control element determination program.

FIG. 17 is a flowchart illustrating a control element determination program.

FIG. 18 is a flowchart illustrating a control element determination program.

FIG. 19 is a flowchart illustrating a control element determination program.

FIG. 20 is a flowchart illustrating a control element determination program.

FIG. 21 is a flowchart illustrating a control element determination program.

FIG. 22 is a graph in which the thickness of a weft is represented by a membership function for a cotton yarn.

FIG. 23 is a graph showing a weft insertion start time as a target value as a membership function.

FIG. 24 is a graph in which a weft leading edge arrival time as a target value is converted into a membership function.

FIG. 25: ON of a weft cutting cutter when using cotton yarn
It is a graph which converted timing into a membership function.

FIG. 26: OF of a weft cutting cutter when using cotton yarn
It is a graph which converted F timing into a membership function.

[Explanation of symbols]

2A: main nozzle for weft insertion, 2B: tandem nozzle,
3, 4, 5 ... weft insertion auxiliary nozzle group, 6 ... weft detector serving as weft leading end arrival detection means, 7 ... electromagnetic solenoid for specifying the weft insertion start time, 9 ... weft serving as weft insertion start time detection means Unwinding detector, C ... Control computer as control element determining means.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-117853 (JP, A) JP-A-62-2222974 (JP, A) JP-A-2-91250 (JP, A) JP-A-3-3 104961 (JP, A) JP-A-4-34045 (JP, A) JP-A-4-281042 (JP, A) JP-A-61-239057 (JP, A) (58) Fields investigated (Int. ⁷ , DB name) D03D 47/30-47/38

Claims (4)

(57) [Claims] 1. A weft insertion control device for a jet loom, the control device comprising: a data input means for data relating to weft insertion such as a weft insertion start time and a weft leading end arrival time; and a weft insertion time and a weft insertion fluid. Control element determining means for determining a control element of the device relating to weft insertion such as injection timing based on input data from the data input means, wherein the control element determining means converts each data relating to the weft insertion according to an order rule. A jet loom comprising means for selecting a control element for the input data based on a specific correspondence between a plurality of classified data sequence groups and a plurality of control element sequence groups in which the control elements are classified according to a sequence rule; Weft insertion control device. 2. The weft insertion control device for a jet loom according to claim 1, wherein the data input to the data input means relating to the weft insertion includes a type of the weft and a thickness of the weft. 3. The weft insertion control element is an operation start timing and a stop timing of the weft insertion device.
A weft insertion control device for a jet loom according to Claim 1. 4. The weft released from the pull-out inhibiting action of the weft pull-out inhibiting means, which can be switched between a state in which the pull-out of the weft is prevented and a state in which the pull-out is permitted, is injected by the injection nozzle of the weft inserting main nozzle. In the jet loom, a weft insertion start time detecting means for detecting a weft insertion start time, a weft tip arrival time detecting means for detecting a weft tip arrival time at a predetermined weft insertion position, the weft insertion start time and the weft tip arrival The weft withdrawal inhibition release time of the weft withdrawal prevention means, which controls the timing, the weft insertion state control elements such as the injection timing of the weft insertion main nozzle, the detected weft insertion start time data and the weft tip arrival time data. Control element determining means for determining the weft insertion start time data according to a predetermined order rule. A detection data sequence group consisting of a plurality of weft tip arrival time data sequence groups obtained by classifying a plurality of weft insertion start time data sequence groups and the weft tip arrival time data obtained according to a predetermined order rule; and A weft insertion state for the weft insertion start time data and the weft tip arrival time data based on a specific correspondence between a plurality of control element order groups obtained by classifying the insertion state control elements according to a predetermined order rule. A weft insertion control device in a jet loom in which a function of selecting a control element is provided to the control element determining means.