JPS62263348A - Wefting method in jet loom - 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 Object of the Invention (Field of Industrial Application) The present invention relates to a weft insertion method in which weft yarns are pulled by a plurality of auxiliary nozzles within the weaving width.

(Prior Art) One method of inserting weft yarns using a jet of fluid is to inject the weft yarns from a main weft insertion nozzle into the warp opening and insert the weft yarns. Along the weft flight path? ! There is a method in which a number of auxiliary nozzles are arranged and the weft is pulled and flung by relay jets from these auxiliary nozzles, but relay jet control in the auxiliary nozzle is extremely important in improving weft insertion stability. This relay injection timing is greatly influenced by the known conditions such as weft insertion time conditions such as weft insertion start angle and weft insertion end angle, weave width, and weft 1 type.
In Japanese Patent No. 75645, the opening/closing timing of an electromagnetic valve that controls the supply of injection fluid to an auxiliary nozzle is set by key operations on an input setting operation panel.

(Problem to be Solved by the Invention) However, as disclosed in the same publication, even when performing a key input operation to set the opening/closing timing of the electromagnetic valve that controls the injection fluid, this input operation must be performed for each electromagnetic valve. Naturally, this input operation is complicated. Moreover, since the number of input setting operations is large, there is a risk of setting errors.

JP-A-59-125941 discloses a control device that automatically selects injection pressure, injection timing, etc. in a main nozzle for weft insertion of a water-gent loom based on input data such as weaving width, weft type, and machine rotation speed. But this input data.

A control method based solely on this cannot solve the unique problem of relay injection that exists in air jet rooms equipped with auxiliary nozzles.

Structure of the Invention (Means for Solving the Problems) Therefore, the present invention targets a jet loom that guides weft yarns by jetting fluids from a plurality of auxiliary nozzles within the weaving width, and the weft insertion start angle and the weft insertion end angle are For each combination of the weft insertion time condition such as the angle and the fabric condition such as the weave width, the relay injection timing of a plurality of electromagnetic valves that control fluid supply to the auxiliary nozzle is input and set in the control device, and the weft insertion time is set. The conditions and fabric conditions are input to the control device, and based on the input weft insertion time conditions and fabric conditions, the relay injection timing is adjusted to match the input weft insertion time conditions and fabric conditions from the input set relay injection timing. The timing is selected or calculated, and the selected or calculated relay injection timing is commanded from the control device.

(Function) That is, the combination of relay injection timings of the plurality of electromagnetic valves is input and set in advance to the control device for each of the weft insertion time conditions and fabric conditions, and the weft insertion time conditions and fabric conditions are input to the control device. , the relay injection timing is selected or calculated according to the weft insertion time condition and the fabric condition. The selected or calculated relay injection timing is then commanded by the control device, and the weft yarn is inserted.

Therefore, even if the weft insertion time conditions or fabric conditions change, the relay injection depending on these conditions is appropriately selected, and good weft insertion is always achieved. In addition, operability has been improved by automatically changing the relay jet just by changing the weft insertion time conditions and fabric conditions, and also eliminates mistakes in setting the weft insertion conditions that can lead to weft insertion errors. do.

(Example) Hereinafter, an example in which the present invention is embodied in a jet loom equipped with a winding type weft length measurement and storage device will be described based on the drawings.

Reference numeral 1 denotes a weft length measuring and storage device of a winding type, and the weft Y wound around the tram la of the device 1 is injected from a main weft insertion nozzle 2 into a warp opening. Storage of the weft length on the drum 1a is performed in synchronization with the machine rotation,
Length measurement storage of weft Y on drum 1a and drum 1a
The withdrawal from the lock pin 3a is controlled by the timing of the protrusion and retraction of the locking pin 3a which is operated to protrude and retract by the electromagnetic solenoid 3.

The injection timing in the weft insertion main nozzle 2 is controlled by an electromagnetic valve 11 connected to a compressed air supply tank 10, and the pressure inside the compressed air supply tank 10 is controlled by an electromagnetic regulator 12.

The weft Y, which has been injected and inserted into the warp opening, is passed through auxiliary nozzles 4A arranged at predetermined intervals within the weaving width.

4B, 5A, 5B, 6A, 6B, 7A, 7B, 8A, 8
Towed by B, 9A, and 9B. Auxiliary nozzle 4A~9
B is group 4.B in pairs starting from the main nozzle 2 side for weft insertion.
5, 6, 7, 8.9, and among these, the injection timing of auxiliary nozzle groups 4 to 8 is determined by the compressed air supply tank 13.
Solenoid valves 14, 15, 16, 17.18 connected to
The injection timing of the auxiliary nozzle group 9 is controlled by an electromagnetic valve 20 connected to the compressed air supply tank 19. The pressure within the compressed air supply tank 13 is controlled by an electromagnetic regulator 21, and the compressed air supply tank 19 is controlled by an electromagnetic regulator 22.

A weft yarn detector 27 is installed at the end position of the fabric (path shown), and is adapted to detect the tip of the weft yarn Y that has reached the end position of the fabric.

The electromagnetic solenoid 3 and electromagnetic valve 11°14-1 described above
8.20 and the electromagnetic regulators 12, 21.22 are controlled based on commands from the control device C, and the control device C is
It consists of a microcomputer 23, a solenoid control section 24 that performs operation control based on the calculation results of the computer 23, a valve control section 25, and a regulator control section 26. microcomputer 2
3, there are many weft insertion conditions including combinations of the timing of the locking pin 3a to come out and go, the opening and closing timing of each electromagnetic valve 11, 14 to 18.20, and the pressure control state of each electromagnetic regulator 12, 21.22. The micro combinator 23 is set in advance according to the time conditions, weaving conditions, and machine rotation speed, and the micro combinator 23 is set based on the input setting conditions of the weft insertion time conditions, weaving conditions, and machine conditions input from the input setting device 28. Weft insertion conditions matching the input setting conditions are selected from the plurality of weft insertion conditions. Further, the microcomputer 23 determines the difference between the set weft insertion end angle and the actual weft insertion end angle based on the detection signal from the weft detector 27 and the signal from a known coterie encoder 29 for detecting the machine rotation angle position. is calculated, and the selected weft insertion condition is corrected based on the calculation result. The aforementioned numerous weft insertion conditions are obtained from past data. Further, the weft insertion time condition means the weft insertion start angle and the weft insertion end angle, the fabric condition means the weaving width and the weft type, and the machine condition means the machine rotation speed. The weaving width determines the required number of auxiliary nozzles, and the weft insertion time condition influences the injection timing of the determined required number of auxiliary nozzles 4A to 9B. The weft type affects the opening angle and opening period of the electromagnetic valves 11.14 to 18.20, and the machine conditions affect the injection pressure.

To explain the input setting device 28 for setting the weft insertion conditions, the numbers displayed on the display section 31 on the operation string 30 are changed and displayed by the operation knob 32.
Through this display operation, for example, when the number 1 is displayed, it is possible to input and set the weft insertion time conditions, when the number 2 is displayed, it is possible to input and set the weaving conditions, and when the number 3 is displayed, the machine conditions can be input and set. Input settings are now possible. The numbers displayed on the display section 33 are changed and displayed using the operation knob 34, and the numbers displayed on the display section 35 are changed and displayed using the operation knob 34.
6 is changed and displayed. To set the weft insertion time conditions, display the number l on the display section 31 and
The numerical values of the weft insertion start angle (for example, 90°) and the weft insertion end angle (for example, 270°) are displayed on the display section 33 and on the display section 35, and the push buttons 37 and 38 are turned on. To set the fabric conditions, display the number 2 on the display section 31, display the weave width on the display section 33, display the numerical value indicating the weft type on the display section 35, and turn on the push buttons 37 and 38. To set the machine conditions, it is sufficient to display the number 3 on the display section 31, display the machine rotation speed on the display section 33, and turn on the push buttons 37 and 38. push button 39
is a call switch, and each time the button 39 is turned on, the timing angle of the protrusion and retraction of the locking pin 3a, the opening/closing timing angle of the electromagnetic valves 11°14 to 18.20, and the injection pressure controlled by the electromagnetic regulators 12, 21, and 22 are changed. Display section 4
Displayed as 0 or 41, this and the locking pin 3
a, numbers specifying the 8M valves 11.14 to 18.20 and the electromagnetic regulators 12 and 21.22 are displayed on the display section 42.

According to such a configuration, the microcomputer 23 to which the weft insertion time conditions, fabric conditions, and machine machine conditions are inputted by the input setting device 28 determines the preset timing of protrusion and retraction of the locking pin 3a and the respective TsKl valves 11, 14. ~18.2
0 and a combination of the control states of the electromagnetic regulators 12, 21, and 22, a weft insertion condition that matches each of the input conditions is selected, and the operation is performed according to the selected weft insertion condition. The signal is sent to the solenoid control section 24, valve $II control section 25, and regulator control section 2.
It is output from 6. Therefore, after the weft yarn Y is stored for a predetermined length in the weft measuring and storage device 1, it is ejected from the weft insertion main nozzle 2 with appropriate injection pressure and injection timing, and is inserted into each auxiliary nozzle. Flight guidance is provided with proper relay injection and injection pressure from groups 4-9. That is, by only a few input setting operations on the operation panel 30, the timing of the locking pin 3a's appearance and retraction, and the solenoid valves 14 to 1 can be adjusted.
The opening/closing timing of 8.20 and the injection pressure control state of electromagnetic regulator 11゜21.22 are immediately selected, eliminating the need for the conventional troublesome operation of multiple input settings such as opening/closing timing settings for each electromagnetic valve. With,
Weft insertion conditions are set appropriately. Furthermore, weft insertion condition setting errors that lead to weft insertion errors are avoided by improving the operability of weft insertion condition setting in that the weft insertion conditions are immediately and appropriately set by a simple operation of the input setting device 28.

In addition, in this embodiment, the weft detector 27 installed at the end of the weaving width
The arrival time of the weft Y is ascertained, and if this arrival time deviates significantly from the set weft insertion end angle, the selected weft insertion conditions (especially the injection pressure) are corrected. A more stable weft insertion state is achieved.

Of course, the present invention is not limited to the above-mentioned embodiments. For example, the present invention is not limited to the above-mentioned embodiments. Input the same number of equations as the number of regulator control status settings into the control device,
The weft insertion conditions can be calculated from the above formula based on the weft insertion time conditions, fabric conditions, and machine frame conditions input from the input setting device, and the length can be measured using a locking pin that is mechanically synchronized with the machine drive motor. The present invention can also be applied to a jet loom equipped with a winding type weft length measuring device for controlling storage, or a jet loom equipped with an air bubble type weft length measuring and storage device. Furthermore, it is also possible to apply the present invention only to the injection timing control of the auxiliary nozzle, which is extremely important for stabilizing weft insertion and requires a large number of individual input settings, such as relay injection. is not necessarily necessary. Furthermore, the present invention can also be applied to so-called multicolor weft insertion in which different types of weft yarns are inserted.

Effects of the Invention As detailed above, according to the present invention, relay injection, which is extremely important for stabilizing weft insertion and requires a large number of individual input settings, can be achieved by using a small number of input data such as weft insertion time conditions and fabric conditions. Since the weft insertion conditions such as the injection timing of the auxiliary nozzle are automatically selected or calculated and commanded, the appropriate weft insertion conditions that match the set weft insertion time conditions and fabric conditions can be immediately obtained, and this can prevent weft insertion errors. This has the excellent effect of eliminating errors in setting the weft insertion conditions.

[Brief explanation of drawings]

The drawing is a block diagram showing an embodiment embodying the present invention. Solenoid valves 11, 14 to 18, 20, input setting device 28
, control device C1 weft Y.

Claims (1)

[Claims] 1. In a jet loom that guides the flight of weft yarns within the warp shedding by fluid jets from multiple auxiliary nozzles, each combination of weft insertion time conditions such as weft insertion start angle and weft insertion end angle and fabric conditions such as weaving width is First, the relay injection timing of a plurality of electromagnetic valves that control the fluid supply to the auxiliary nozzles is input and set in the control device, the weft insertion time conditions and the fabric conditions are input into the control device, and the input weft Select or calculate a relay injection timing that matches the input weft insertion time conditions and fabric conditions from the input set relay injection timings based on the input weft insertion time conditions and fabric conditions, and use the selected or calculated relay injection timing. A weft insertion method in a jet loom commanded by the control device.