JPH0559639A - Controller for picking in jet loom - Google Patents

Abstract

PURPOSE:To obtain a device for controlling the picking starting period affecting the picking state, jetting starting period of a picking main nozzle and jetting stop period of picking auxiliary nozzles based on the rule of thumb. CONSTITUTION:A picking control program in which the rule of thumb is incorporated is included in a control computer (C) for controlling the excitation starting period of an electromagnetic solenoid 7 and solenoid valves (V1) and (V2) and demagnetizing period of a solenoid valve (V4) based on the picking starting period from a weft yarn unwinding sensor 9 and a weft yarn tip arrival period from a weft yarn sensor 6. In the picking control program, a sensing data sequence group prepared by classifying picking starting period data and weft yarn tip arrival period data on a sequential rule is made to correspond to a picking state control element sequence group obtained by classifying the picking state control elements such as excitation starting period of the electromagnetic solenoid 7 an excitation starting period data of the solenoid valve (V1) on a sequential rule with a specific relation based on the rule of thumb. Control elements corresponding to the sensed data are determined based on the picking control program.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to jetting of a weft released from the weft pull-out preventing means capable of switching the weft pull-out preventing state and the weft pull-out allowing state to a weft inserting main nozzle. The present invention relates to a weft insertion control device in a jet loom in which an injection weft insertion is performed by an action.

[0002]

2. Description of the Related Art In a jet loom, it is important for weaving a high quality woven fabric to achieve a good weft insertion state in which a weft reaches a predetermined weft insertion end position at a predetermined time. As the control elements that influence, there are, for example, the weft insertion start time and the injection timing of the weft insertion nozzle. Japanese Unexamined Patent Publication (Kokai) No. 62-117853 compares the actual arrival time of the weft end with a predetermined arrival time at a predetermined weft end arrival position in the weaving width region, and based on the result of this comparison, a winding type weft A weft insertion control means for controlling a weft release start timing of a weft locking pin on a length measuring and storage device is disclosed.

In this weft insertion control, the weft insertion start time is changed by a predetermined time when the arrival of the weft tip at the predetermined position is slow, and the weft insertion is changed by the same time when the arrival of the weft tip at the predetermined position is early. The start time is delayed.

[0004]

However, there are three cases where the front end of the weft reaches the predetermined position on the weft insertion start side: normal, slow, and early, and there are three similar states when weft insertion is started. .. Therefore, there are 9 combinations of only the weft insertion start state and the weft yarn tip reaching state,
Furthermore, there are innumerable weft insertion states that can be grasped by considering the degree of deviation from the set time. Therefore, the conventional simple weft insertion control method cannot achieve fine weft insertion control suitable for various weft insertion states.

According to the present invention, the weft-insertion timing such as the weft-insertion start timing and the injection timing of the weft-insertion nozzle is utilized by utilizing the empirical rule of a skilled person who sets the weft-insertion start timing and the weft yarn tip arrival timing. An object of the present invention is to provide a weft insertion control device in a jet loom in which control elements can be optimally set.

[0006]

To this end, according to the first aspect of the present invention, a weft insertion control device in a jet loom includes a data input means for data relating to weft insertion such as a weft insertion start time and a weft end arrival time, and a weft insertion time. And a control element determining means for determining a control element of the device relating to weft insertion, such as a weft inserting fluid injection timing, based on input data from the data input means, the control element determining means comprising: 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 Is equipped with.

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

According to the fourth aspect of the invention, the weft released from the weft pull-out preventing means that can switch between the state in which the weft pull-out is blocked and the state in which the weft pull-out is allowed is released by the jetting action of the main weft inserting nozzle. In a jet loom for injection weft insertion, weft insertion start timing detection means for detecting the weft insertion start timing, weft tip arrival timing detection means for detecting the weft tip arrival timing at a predetermined weft insertion position, and the weft insertion start timing and Weft insertion start timing data and weft end that are detected by weft insertion state control elements such as the weft withdrawal prevention release timing of the weft withdrawal prevention means, the injection timing of the weft insertion main nozzle, etc. And a control element determining means for determining the arrival time data based on the arrival time data. Detected data order group consisting of a plurality of weft insertion start time data order groups obtained by classifying according to the ordinal rule and a plurality of weft tip arrival time data order groups obtained by classifying the weft end arrival time data according to a predetermined order rule And the weft-insertion start timing data and the weft yarn tip arrival timing data based on a specific correspondence between the weft-insertion state control elements and a plurality of control element order groups obtained by classifying the weft-insertion state control elements according to a predetermined order rule. The control element determining means is provided with a function of selecting the weft insertion state control element.

[0009]

[Function] The weft insertion start time data is classified into a plurality of weft insertion start time data order groups, for example, with the order rules of "early", "somewhat early", "normal", "somewhat late", and "slow". To be done. The weft end arrival time data is, for example, “early”,
It is classified into a plurality of weft end arrival time data order groups with order rules of "somewhat early", "normal", "somewhat slow", and "slow". In addition, weft insertion state control elements such as the weft withdrawal prevention release timing of the weft withdrawal prevention means and the injection start timing of the weft insertion main nozzle are "slow", "somewhat slow", "normal", "somewhat early", It is classified into a plurality of control element order groups with an order rule such as "early". The detected data order group and the control element order group, which are the weft insertion start time data order group and the weft tip arrival time data order group, are linked by a specific correspondence relationship based on an empirical rule, and the control element determination means makes this specific correspondence. Based on the relationship, the control elements for the detection data such as the weft insertion start time data and the weft tip arrival time data are determined.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment embodying the present invention will now be described with reference to FIGS.
It will be described with reference to FIG. Reference numeral 1 denotes a winding type weft measuring and storing device, in which the weft Y measured and stored by the weft measuring and storing device 1 is injected and inserted from a weft inserting main nozzle 2A, and a plurality of weft inserting auxiliary nozzle groups 3 , 4, 5 relay injection. A tandem nozzle 2B is interposed between the weft measuring and storing device 1 and the weft inserting main nozzle 2A. The weft Y is propelled by the tandem nozzle 2B and ejected from the weft inserting main nozzle 2A.

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

Locking pins 7a are used to prevent the weft from being pulled out from the yarn winding surface 1a of the weft measuring and storing device 1 and to pull it out.
Is performed by the excitation / demagnetization of the electromagnetic solenoid 7 for driving the. The excitation / demagnetization control of the electromagnetic solenoid 7 is performed by a command from the control computer C, and the control computer C controls the excitation / demagnetization of the electromagnetic solenoid 7 based on the machine base rotation angle detection signal from the rotary encoder 8.

A weft unwinding detector 9 composed of a reflection type photoelectric sensor is arranged near the yarn winding surface 1a, and the weft Y unwound and unwound from the yarn winding surface 1a is detected by the weft unwinding detector 9. To be detected. The control computer C commands demagnetization of the electromagnetic solenoid 7 when the number of unwinding detections from the weft unwinding detector 9 reaches a set number, and the locking pin 7a engages with the thread winding surface 1a to prevent the weft drawing. ..

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

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

The machine base rotation angle range [Θ ₁₁ , Θ ₁₂ ] represents the excitation / demagnetization timing of the electromagnetic solenoid 7. Machine stand rotation angle range (Θ
₂₁ and Θ ₂₂ ] represents the excitation / demagnetization timing of the electromagnetic valve V ₁ , and the machine base rotation angle range [Θ ₃₁ , Θ ₃₂ ] represents the excitation and demagnetization timing of the electromagnetic valve V ₂ . In addition, the machine rotation angle range [α _i , β _i ] (i
= 1 to 3) represents the excitation / demagnetization timing of the electromagnetic valve V _{i + 2} .

Machine rotation angle Θ ₁₁ indicating the excitation start timing of the electromagnetic solenoid 7, machine rotation angle Θ ₂₁ indicating the injection start timing of the weft insertion main nozzle 2A, and machine rotation indicating the injection start timing of the tandem nozzle 2B. The control computer C changes and controls the angle Θ ₃₁ and the machine rotation angle β ₂ that represents the injection stop timing of the auxiliary nozzle group 4 for weft insertion. The control computer C uses the weft insertion start timing To _j detected by the weft unwinding detector 9 and the weft leading edge arrival time Tw _j detected by the weft detector 6 to determine the weft unwinding timing Θ.
₁₁ , the injection start timing Θ _{21 of} the weft insertion main nozzle 2A, the injection start timing Θ ₃₁ of the tandem nozzle 2B, and the injection stop timing β ₂ of the weft insertion auxiliary nozzle group 4 are controlled. These timings Θ ₁₁ , Θ ₂₁ , Θ ₃₁ , and β ₂ are weft-insertion state control elements, and the control computer C determines each timing Θ based on the control element determination program shown in the flow charts of FIGS.
Determine ₁₁ , Θ ₂₁ , Θ ₃₁ , and β ₂ .

The functions g ₁ , g ₂ , g ₃ , g ₄ , g _{5 of FIG.}
Is a weft insertion start time data order group G ₁ , G ₂ , G ₃ , G in which weft insertion start time To _j is classified according to the order rule of magnitude.
It is set corresponding to ₄ and G ₅ . The weft insertion start time data order group G _m (m = 1 to 5) is the following set of weft insertion start times.

G₁= “Fast” weft insertion start angle (Θ₁~ Θ₂) G₂= “Somewhat faster” weft insertion start angle (Θ₁~ To) G₃= “Normal” weft insertion start angle (Θ₂~ Θ₃) G_Four= "Somewhat slow" weft insertion start angle (To ~ Θ_Four) G_Five= “Slow” weft insertion start angle (Θ₃~ Θ_Four) However, Θ₁<Θ₂<To <Θ₃<Θ_FourIs. Each of these
Machine rotation angle Θ₁, Θ ₂, To, Θ₃, Θ_FourIs an input device
12 is input to the control computer C.

Function g_m(M = 1-5) is the weft insertion start time
Data order group G_mRepresents the accuracy of the group element x in. Figure 4
Function h of₁, H₂, H₃, H_Four, H_FiveIs when the weft end is reached
Period Tw_jOf weft yarns classified according to the ordering rules of size
Arrival time data order group H₁, H₂, H₃, H _Four, H_FiveAgainst
It has been set accordingly. Weft end arrival time data
Order group H_n(N = 1 to 5) when the following weft end is reached
It is a gathering of periods.

H₁= "Early" weft end arrival time (Θ_Five~ Θ₆) H₂= "Somewhat early" weft end arrival time (Θ_Five~ Tw) H₃= “Ordinary” weft tip arrival angle (Θ₆~ Θ₇) H_Four= "Somewhat slow" weft tip arrival angle (Tw ~ Θ₈) H_Five= “Slow” weft end arrival time (Θ₇~ Θ₈) However, Θ_Five<Θ₆<Tw <Θ₇<Θ₈Is. Each of these
Machine rotation angle Θ_Five, Θ ₆, Tw, Θ₇, Θ₈Is an input device
12 is input to the control computer C.

The function h _n (n = 1 to 5) represents the accuracy of the group element y in the weft yarn arrival time data order group H _n . Function f ₁₁ in FIG. _{5, f 12, f 13,} f 14, f 15 is energized start timing change amount data sequence group A were classified with ordering rules of the magnitude of the excitation start timing change amount data relating to the electromagnetic solenoid 7
It is set corresponding to ₁ , A ₂ , A ₃ , A ₄ , and A ₅ . Excitation start time change amount data order group A _a (a = 1
5 to 5) are the following collections 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 amount (0 to −δ ₁₄ ) A ₅ = “large” negative angle change amount (−δ ₁₃ to −δ ₁₄ ) −δ ₁₄ <−δ ₁₃ <0 <δ ₁₂ <δ ₁₁ .

The angle change amount data order group A _a is an element for controlling the weft insertion state, and functions f ₁₁ , f ₁₂ , f ₁₃ ,
f ₁₄ and f ₁₅ represent the accuracy of group elements in the weft-insertion state control element order group A _a .

The functions f ₂₁ , f ₂₂ , f ₂₃ , f ₂₄ , f _{25 of FIG.}
Is the excitation start timing change amount data for the electromagnetic valve V ₁ ,
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 B _b (b = 1 to 5) is a collection of the following machine base 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 amount (0 to −δ ₂₄ ) B ₅ = “Large” negative angle change amount (−δ ₂₃ to −δ ₂₄ ) −δ ₂₄ <−δ ₂₃ <0 <δ ₂₂ <δ ₂₁ .

The injection start timing change amount data sequence group B _b is an element for controlling the weft insertion state, and functions f ₂₁ ,
f ₂₂ , f ₂₃ , f ₂₄ , and f ₂₅ are weft-insertion state control element order group B
_It represents the accuracy of the group element in _b .

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

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

The injection start timing change amount data sequence group C _c is an element for controlling the weft insertion state, and functions f ₃₁ ,
f ₃₂ , f ₃₃ , f ₃₄ , and f ₃₅ are weft-insertion state control element order group C
_It represents the accuracy of the group element in _c .

The functions f ₄₁ , f ₄₂ , f ₄₃ , f ₄₄ and f _{45 of FIG.}
Degauss timing change amount data on electromagnetic valve V _4, i.e. the weft insertion auxiliary nozzle groups injection stop timing change amount ejection stop timing change amount data was classified with ordering rules of the magnitude of 4 data sequence group D _1, D ₂ , D ₃ , D ₄ and D ₅ are set. The injection stop timing change amount data order group D _d (d = 1 to 5) is the following set of 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 amount (0 to −δ ₄₄ ) D ₅ = “Large” negative angle change amount (−δ ₄₃ to −δ ₄₄ ) However, −δ ₄₄ <−δ ₄₃ <0 <δ ₄₂ <δ ₄₁ .

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

The weft insertion start time To _j and the weft yarn front end arrival time Tw _{j are} the detection data order groups G _m , H _n and the control element order groups A _a , B _b , C _c , D _d, and the locking pin 7a. This is based on the empirical rule of a skilled person who performs the work of setting the appearance time and the setting of the injection timing, and the classification of the control element order groups A _a , B _b , C _c , D _d is also a rule of thumb of the expert. It is done in the light of. The correspondence between the detected data order group G _m , H _n and the control element order group A _a , B _b , C _c , D _d is specified by the rule R _{m, n} in the following table (1), and is a rule of thumb of an expert. Are incorporated into the rule R _{m, n} .

[0035]

[Table 1]

The control computer C controls the weft detector 6 and the weft.
The detection data obtained from the yarn unwinding detector 9 and the table (1)
Rule R_{m, n}Flowchart of FIGS.
The control element determination program shown in FIG. Control
Pewter C starts weft insertion obtained from weft unwinding detector 9.
Time To_jAnd reaching the weft end obtained from the weft detector 6.
Time Tw_jIs sampled in N units, and sampled
The average values x and y for each ring number N are calculated. Control computer
Ta C is the weft insertion start to which the calculated weft insertion start time x belongs.
Start time data order group G_mAnd when the calculated weft end is reached
Weft end arrival time data order group H to which period y belongs_nGrasp
Group G to hold 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}Accuracy g_m(x), g_{m + 1}(x), h_n(y), h_{n + 1}(y)
To calculate. In the example of FIGS. 3 and 4, x is the ordered group G₂, G
₃Belongs to, and y is the ordered group H₃, H_FourBelong to. That
And the group G of x₂, G₃The accuracy at is g₂(x), g
₃(x) and the member group H of y₃, H _FourThe accuracy at is h
₃(y), h_Four(y).

The control computer C controls the group G ₂ , G belonging to x.
Table (1) showing the rules corresponding to the groups H ₃ and H ₄ of ₃ and y
Select 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 as follows, for example. 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 selected R ₃₄ ... control element order group _{a 3, B 3, C 3} , D 2 selective addition, accuracy all rules R _m, and has a maximum value selected for _n.

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

The control computer C determines the area center of gravity K (z ₁ of the hatched portion in FIG. 5 based on the selected control element order groups A ₂ and A ₃ and the accuracies g ₂ (x) and g ₃ (x). ) Is calculated. The control computer C calculates the calculated area center of gravity K.
The machine rotation angle change amount z ₁ corresponding to (z ₁ ) is set as the weft insertion start timing change amount, and the weft insertion start timing Θ ₁ up to then is changed to Θ ₁ + z ₁ .

Jet opening at the main nozzle 2A for weft insertion
Start time change amount z₂, Tandem nozzle 2B injection opening
Start time change amount z₃And injection stop in auxiliary nozzle group 4
Timing change amount z_FourIs a combination of control element order group and accuracy [B
₂, B₃, G₂(x), g₃(x)], [C₂, C₃, G₂(x),
g₃(x)] and [D₂, D₃, H_Four(y), g₃(x)]
And calculated in the same manner as above. Detection start time of detection of Fig. 9
x is faster than in the case of FIG.
The arrival time y represents a state later than that in FIG. 9 and 1
Each change amount z obtained from the detection data of 0₁, Z₂，
z₃, Z_Four5 to FIG.
This is clearly different from the change amount in the case of 8. That is, the detection date
Change for weft insertion control even if the difference between x and y is slight.
Further amount z₁, Z ₂, Z₃, Z_FourIs different, finely detailed
Control becomes possible.

The weft insertion state represented by the detection data x and y in FIGS. 3 and 4 is the same as the weft insertion state represented by the detection data x and y in FIGS. Sho 6
There is no difference in the degree of control in the weft insertion control method disclosed in Japanese Patent Publication No. 2-117853, 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 detected data x and y, and if the rule R _{m, n} is set appropriately, good weft insertion control is possible. Becomes

The rule R _{m, n} is set in accordance with the rule of thumb of the expert, but the rule of thumb of such expert is very accurate. The rule R _{m, n} is easily set from the viewpoint of the experience rule of the expert, and the experiment is conducted on the excitation start timing of the electromagnetic solenoid 7, the injection start timing of the nozzles 2A and 2B, and the injection stop timing of the auxiliary nozzle group 4. There is no need to rely on the time-consuming task of specifying in. In particular, four output data z ₁ , z ₂ , from two detection data x, y,
In the work of identifying z ₃ and z ₄ by experiments, the number of combined states becomes innumerable, and it is practically impossible to carry out such experiment work. However, in this embodiment, it is possible to easily specify the _four output data z ₁ , z ₂ , z ₃ and z ₄ with respect to the two input data x and y only by the rule of thumb of a skilled person.

Of course, the present invention is not limited to the above-mentioned embodiment, and 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 controlled to be changed is also possible.

Although the above embodiment shows an example of weft insertion control during the operation of the loom, the present invention selects the control element of the weft insertion control section even at the time of initial setting before starting the operation of the loom.
It is also possible to modify it so that it is set. That is, the data regarding the weft insertion is converted into the detectors 6 and 9 as in the above embodiment.
Instead of inputting this as the data from the above, the target data is manually input by the operator, etc., and based on that, the control element of the weft insertion control unit is selected and automatically set by the same method as the above-mentioned embodiment. be able to. Then, after operating the loom with the automatically set value, the data concerning the weft insertion start time To _j and the weft yarn tip arrival time Tw _j from the detectors 6 and 9 are input to the control computer C as in the above-described embodiment. Then, various timings of the weft insertion control unit can be corrected based on the value obtained as a result.

Further, in the above-mentioned embodiment, the weft insertion start time To _j and the weft yarn end arrival time Tw _j are used as the input data to the data input means. Alternatively, the weaving width, the diameter of the weft measuring drum, etc. can be used as data input by an operator, etc., and can be modified so as to create a plurality of data order groups classified by the order rule for each data. ..

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 elements of the weft measuring and storing device 1 are used as control elements. The solenoid 7 and the electromagnetic cutter for cutting the weft yarn can be modified to use the operation start timing and the operation stop timing.

That is, FIG. 22 to FIG.
6, the yarn types are classified into span type and filament type, and for each yarn type, the initially set yarn thickness, the weft insertion start time To, and the weft end arrival time Tw.
The membership functions of are created as shown in FIGS. At the time of creation, the order rule of big and small or fuzzy set, for example, about the thickness of the cotton yarn of the span type,
“Very thin”, “thin”, “normal”, “thick”, and “very thick”, the weft insertion start time To and the weft yarn tip arrival time Tw are “early” as in the above embodiment.
“Somewhat fast”, “normal”, “somewhat slow”, and “slow”.

Initially set yarn count and weft insertion start time T
Weft cutting under the conditions of o and the value of the weft end arrival time Tw
ON / OFF timing of the cutter 20 (see FIG. 1)
The if-then rule that decides
Incorporates the rules of thumb of experts. For example, of cotton thread
In the case of if-then rule, rule 1 if
Thread thickness is "normal", To is "normal", Tw is "normal"
, Then cutter ON timing "normal", OFF
Imming “normal”, rule 2 if thread thickness “thick”
Then, if To is “somewhat fast” and Tw is “normal”, then
ON timing "early", OFF timing "normal"
"If-then rule like this is a span system.
Not only for wefts of filament type, 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 is electrically charged.
Magnetic valve V₁, V₂, V _FourOr electromagnetic solenoid 7 is turned on
(Cutter operation start), OFF (Cutter operation stop)
Created for Imming. The number of fuzzy sets is
About thickness, start time of weft insertion and arrival time of weft end
There are 5 types, so there are 125 types for each thread type.
Is created. Each electromagnetic valve V₁, V₂, V_FourNitsu
The fuzzy set in this case is the same as that in the above embodiment.

22 to 24, for example, when the yarn count of cotton yarn is 30, the weft insertion start time To is 88 °, and the weft yarn tip arrival time Tw is 233 °, the initial settings are as follows:
If the yarn count “30” is applied to the Y axis of the membership function of the thread thickness in FIG. 22 and the accuracy or membership function value for each belonging group is obtained, “normal” 0.6, “thick”
0.5, and similarly from FIG. 23, weft insertion start time To
24, the membership function values of "weak" 0.4, "normal" 0.6, and from FIG. 24, the membership function values of the weft thread tip arrival time Tw are "normal" 0.7, "slow" 0.
It is 3. This is applied to the if-then rule described above to make an inference, and the ON / OFF timing of the weft cutting cutter 20 or the like is derived. At the time of derivation, the initially set thread thickness, weft insertion start time To, and weft thread tip arrival time T
ON, OF of small value of Y axis of membership function of w
The value is on the Y-axis of the F-timing membership function.
Then, when there are a plurality of conclusions of ON and OFF timings, the larger value of the Y axis of the membership function is taken.

That is, when the above-mentioned condition is applied to the if-then rule and a small value of the Y axis is taken, rule 1 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, so if a value with a high accuracy of the membership function of To and Tw is selected, as shown in FIGS. 25 and 26, the cutter ON timing is “normal” 0.6 “fast” 0 .4 Cutter OFF timing "normal" max [0.6, 0.
4] = 0.6. Therefore, the area center of gravity of the shaded portion shown in FIGS. 25 and 26 is calculated as in the above embodiment, and the value on the X axis at which the perpendicular line intersects, that is, 24 ° and 50 ° is the cutter ON / OFF timing. It becomes the initial setting value of. And
After actually starting the operation of the loom with these initial set values, the data of the weft insertion start time To _j and the weft end arrival time Tw _j obtained from the detectors 6 and 9 are used to determine if-th.
The en rule is created, the set values of various ON and OFF timings of the weft insertion system are obtained again by the above-mentioned procedure, and these become new set values.

[0052]

As described above in detail, according to the present invention, a plurality of weft-insertion start-time data order groups obtained by classifying the weft-insertion start-time data according to the order rule and the weft-insertion-end-arrival time data are classified according to the order rule. Specific correspondence based on an empirical rule between the detected data order group consisting of multiple weft tip arrival time data order groups and the plurality of control element order groups in which weft-insertion state control elements are classified according to order rules Since we have selected the control element for the detection data based on the relationship,
A control element is properly and uniquely selected from the control element order group classified according to the experience rule possessed by a skilled person,
It has an excellent effect that an appropriate weft-insertion state control element can be determined without relying on a very troublesome task of specifying based on experimental data.

[Brief description of drawings]

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

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

FIG. 3 is a graph showing the accuracy of an ordered group of detection data called weft insertion start time.

FIG. 4 is a graph showing the accuracy of an ordered group of detection data called a weft yarn tip arrival time.

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

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

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

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

FIG. 9 is a graph showing the accuracy of an ordered group of detection data, which is a weft insertion start time.

FIG. 10 is a graph showing the accuracy of an ordered group of detection data called a weft yarn tip arrival time.

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

FIG. 12 is a graph showing the accuracy of an ordered group of weft-insertion state control elements, which is an injection start timing change amount of the weft-insertion main nozzle.

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

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

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

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

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

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

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

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

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

FIG. 22 is a graph in which the thickness of the weft yarn is representatively converted into a membership function for cotton yarn.

FIG. 23 is a graph in which a weft insertion start time as a target value is converted into a membership function.

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

FIG. 25: Turning on the weft cutting cutter when using cotton yarn
It is the graph which made timing into the membership function.

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

[Explanation of symbols]

2A ... main nozzle for weft insertion, 2B ... tandem nozzle,
3, 4, 5 ... Auxiliary nozzle group for weft insertion, 6 ... Weft detector which serves as a weft yarn tip arrival time detection means, 7 ... Electromagnetic solenoid for specifying a weft insertion start time, 9 ... Weft thread which serves as a weft insertion start time detection means Unwinding detector, C ... A control computer serving as a control element determining means.

Claims (4)

[Claims] 1. A weft insertion control device in a jet loom, the control device comprising a data input means for data regarding weft insertion such as a weft insertion start time and a weft yarn end arrival time, and a weft insertion time and a weft insertion fluid. And a control element determining means for determining a control element of the device relating to weft insertion such as injection timing based on the input data from the data input means, the control element determining means having a sequence rule for each data relating to the weft insertion. A jet room including means for selecting a control element for the input data based on a specific correspondence relationship between a plurality of classified data order groups and a plurality of control element order groups classified by the control elements with order rules. 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 the type of weft and the thickness of the weft. 3. The control element for weft insertion is an operation start timing and a stop timing of an apparatus for weft insertion.
The weft insertion control device in the jet loom described in. 4. A weft that has been released from the pull-out blocking action of the weft pull-out blocking means that can be switched between a weft pull-out blocking state and a weft pull-out allowing state is injected by the jet action of the weft-inserting main nozzle. In the jet loom, weft insertion start timing detection means for detecting the weft insertion start timing, weft thread arrival time detection means for detecting the weft thread arrival time at a predetermined weft insertion position, the weft insertion start time and the weft thread arrival time The weft insertion start timing data and the weft yarn tip arrival timing data are used to detect weft insertion state control elements such as the weft withdrawal prevention release timing of the weft withdrawal prevention means, the injection timing of the weft insertion main nozzle, etc. The weft insertion start time data is divided according to a predetermined order rule. The weft insertion start time data sequence group and the weft tip arrival time data sequence group obtained by classifying the weft tip arrival time data according to a predetermined order rule; Weft insertion state for the weft insertion start time data and the weft tip arrival time data based on a specific correspondence relationship between a plurality of control element order groups obtained by classifying the insertion state control elements by a predetermined order rule. A weft insertion control device in a jet loom, wherein the control element determining means has a function of selecting a control element.