JP2544724B2 - Weft insertion method in the jet room - Google Patents

Description

The present invention relates to a weft insertion condition setting method in a jet loom.

(Prior Art) As a method of inserting wefts by jetting fluid, a plurality of auxiliary nozzles are arranged along the flight path of the weft that is injected from the main nozzle for weft insertion into the warp opening, and these auxiliary nozzles are arranged. Although there is a method of pulling and flying the weft by the relay injection of No. 2, the relay injection control in the auxiliary nozzle is extremely important for improving the weft insertion stability. This relay injection timing largely depends on the weft insertion time conditions such as the weft insertion start angle and the weft insertion end angle, and the fabric conditions such as the weaving width and the weft type, and in JP-A-60-75645, the auxiliary nozzle The opening / closing timing of the electromagnetic valve that controls the supply of the injection fluid is set by operating the keys on the input setting operation panel.

(Problems to be Solved by the Invention) However, even when the opening / closing timing setting of the electromagnetic valve for controlling the injection fluid is key-operated as disclosed in the publication, this input operation must be performed for each electromagnetic valve. Therefore, this input operation is complicated. Moreover, since the number of input setting operations is large, there is a risk of setting errors.

Japanese Unexamined Patent Publication No. 59-125941 discloses a control device for automatically selecting an injection pressure, an injection timing, etc. in a main nozzle for weft insertion of a water jet room based on input data such as weaving width, weft type, and machine base rotation speed. Has been
The control method based only on this input data cannot be applied to solve the peculiar problem of relay injection existing in an air jet room equipped with an auxiliary nozzle.

The object of the present invention is to eliminate the problems existing in the above-mentioned conventional techniques, and before the normal operation of the loom, it is possible to easily set an appropriate weft inserting condition corresponding to the weft inserting time condition and the fabric condition. The purpose of the present invention is to provide a weft inserting condition setting method in a jet loom that eliminates a weft inserting condition setting error that may lead to a weft inserting error.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a plurality of auxiliary nozzles for ejecting the wefts injected from the weft-inserting main nozzle into the warp opening, and fluids from the auxiliary nozzles. In a jet loom equipped with a plurality of electromagnetic valves for controlling jetting in a relay-like manner and a regulator for controlling the jetting pressure of fluid supplied to the auxiliary nozzle, the weaving machine start-up angle and weft-insertion end angle are given to the weaving machine control device. The relay injection timing of the electromagnetic valve and the injection pressure of the fluid supplied to the auxiliary nozzle for each combination of the weaving time condition, the weaving width, the fabric condition such as the type of yarn to be used, and the machine rotation speed, or The calculation formula with the condition as a variable is input and set in advance, and before the start of the normal operation of the loom, a specific weft insertion time condition,
The fabric condition and the machine base rotation speed are input to the control device, and based on the input specific weft insertion time condition, the fabric condition and the machine base rotation speed, the relay injection timing and the injection pressure suitable for these conditions are selected. Alternatively, it is calculated, and the selected or calculated relay injection timing and injection pressure are set in the electromagnetic valve and the regulator, and then the loom is operated.

(Operation) That is, the relay injection timing of the electromagnetic valve for each combination of the weft insertion time condition such as the weft insertion start angle and the weft insertion end angle, the fabric condition such as the weaving width and the type of yarn used, and the machine rotation speed. And the injection pressure of the fluid to be supplied to the auxiliary nozzle, or a calculation formula using the above condition as a variable,
If the specific weft insertion time condition, the weaving condition and the machine stand rotation speed are input to the control device before the normal operation of the loom is started, the relay injection timing corresponding to this is set. And the injection pressure are selected or calculated, the relay injection timing and the injection pressure are selected for the electromagnetic valve and the regulator, and then the loom is operated.

Therefore, even when the weft insertion time condition and the fabric condition are changed, the relay injection depending on these conditions is properly selected, and good weft insertion is always achieved. In addition, the operability is improved that the relay injection is automatically changed only by changing the weft insertion time condition and the fabric condition.
Moreover, it eliminates the mistake of setting the weft insertion conditions that would lead to weft insertion errors.

(Example) An example in which the present invention is embodied in a jet loom equipped with a winding type weft measuring and storing device will be described below with reference to the drawings.

Reference numeral 1 denotes a winding type weft measuring and storing device, in which a weft Y wound on a drum 1a of the device 1 is injected from a main weft insertion nozzle 2 into a warp opening. The length measurement storage of the weft yarn on the drum 1a is performed in synchronization with the rotation of the machine base, and the length measurement storage of the weft yarn Y on the drum 1a and the withdrawal from the drum 1a are engaged and retracted by an electromagnetic solenoid 3.
It is controlled by the appearance timing of 3a. The injection timing in the weft insertion main nozzle 2 is controlled by an electromagnetic valve 11 connected to the compressed air supply tank 10, and the pressure in the compressed air supply tank 10 is controlled by an electromagnetic regulator 12.

The weft Y injected into the warp shed is inserted into the weft width at predetermined intervals and the auxiliary nozzles 4A, 4B, 5A, 5B, 6A, 6B,
Towed by 7A, 7B, 8A, 8B, 9A, 9B. Auxiliary nozzle 4A-9
B is a group 4,5, in pairs from the main weft insertion nozzle 2 side in order.
6,7,8,9, of which auxiliary nozzle groups 4-8
The timing of relay injection is controlled by electromagnetic valves 14, 15, 16, 17, 18 connected to the compressed air supply tank 13, and the timing of relay injection of the auxiliary nozzle group 9 is controlled by an electromagnetic valve connected to the compressed air supply tank 19. It is controlled by the valve 20.
The pressure in the compressed air supply tank 13 is controlled by the electromagnetic regulator 21, and the compressed air supply tank 19 is controlled by the electromagnetic regulator 22.

A weft yarn detector 27 is installed at the end position of the weaving width (not shown) so as to detect the tip of the weft yarn Y reaching the weft width end position.

The electromagnetic solenoid 3 and the electromagnetic valves 11, 14 to 18, 20 described above
The electromagnetic regulators 12, 21, and 22 are controlled based on a command from the control device C, and the control device C includes a microcomputer 23, a solenoid control unit 25 that performs operation control based on a calculation result in the computer 23, and The valve control unit 26. The microcomputer 23 has a number of weft insertion conditions, which are combinations of the timing of retracting the locking pin 3a, the timing of opening / closing each electromagnetic valve 11, 14-18, 20 and the pressure control state of the electromagnetic regulators 12, 21, 22. It is preset according to the putting time condition, the fabric condition and the machine base rotation speed, and the microcomputer 23 is based on the input setting conditions such as the weft inserting time condition, the fabric condition and the machine base condition input from the input setting device 28. A weft inserting condition suitable for the input setting condition is selected from the plurality of weft inserting 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 yarn detector 27 and the signal from the known rotary encoder 29 for detecting the machine base rotation angle position. Is calculated, and the selected weft inserting condition is corrected based on the calculation result. The large number of weft insertion conditions are obtained from past data.
The weft insertion time condition means the weft insertion start angle and the weft insertion end angle, the woven condition means the weaving width and the weft type, and the machine stand condition means the machine stand rotation speed. The weaving width determines the required number of auxiliary nozzles, and the weft insertion time condition affects the injection timing of the determined required number of auxiliary nozzles 4A to 9B.

The weft type influences the opening start advance angle and the opening period of the electromagnetic valves 11, 14 to 18, 20 and the machine base condition influences the injection pressure.

The input setting device 28 for setting the weft inserting condition will be described. The number displayed on the display unit 31 on the operation panel 30 is changed and displayed by the operation knob 32. For example, the number 1 is displayed by this display operation. When displayed, the weft insertion time condition can be input and set, when the number 2 is displayed, the fabric condition can be input and set, and when the number 3 is displayed, the machine frame condition can be input and set. The numbers displayed on the display section 33 are changed and displayed by the operation knob 34.
The numbers displayed on the display unit 35 are changed and displayed by the operation knob 36. To set the weft insertion time condition, the numeral 1 is displayed on the display unit 31, the weft insertion start angle (for example, 90 °) is displayed on the display unit 33, and the weft insertion end angle (for example, 270 °) is displayed on the display unit 35. Is displayed, and push buttons 37 and 38 are turned on.
do it. To set the fabric condition, the numeral 2 is displayed on the display unit 31, the weaving width is displayed on the display unit 33, the numerical value indicating the weft type is displayed on the display unit 35, and the push buttons 37 and 38 are turned on. To set the machine conditions, display the number 3 on the display 31.
Is displayed, and the machine speed is displayed on the display unit 33.
It is sufficient to turn on the push buttons 37 and 38. The push button 39 is a call switch, and every time the button 39 is turned on, the locking pin 3a
The emergence timing angle, 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, 22 are displayed on the display section 40 or 41, and together with this, the locking pin 3a, the electromagnetic valve. Numbers designating 11, 14 to 18, 20 and electromagnetic regulators 12, 21, 22 are displayed on the display unit 42.

According to such a configuration, the microcomputer 23 to which the weft insertion time condition, the fabric condition and the machine base condition have been input by the input setting device 28 is set in advance, and the retracting timing of the locking pin 3a, the electromagnetic valves 11 and 14 are set. ~ 18,20 and weft insertion conditions that match the above-mentioned input set conditions are selected from a number of weft insertion conditions consisting of combinations of the control states of the electromagnetic regulators 12,21,22. A corresponding operation signal is output from the solenoid control unit 24, the valve control unit 25, and the regulator control unit 26. Therefore, the weft Y is measured and stored by the weft measurement storage device 1 by a predetermined amount, and then the weft Y is injected from the weft insertion main nozzle 2 at an appropriate injection pressure and injection timing, and the auxiliary nozzle groups 4 to 9 are inserted. The flight is guided by the appropriate relay injection and injection pressure from. That is, only a few input setting operations on the operation panel 30 cause the engagement / disengagement timing of the locking pin 3a, the electromagnetic valves 11,1
Opening timing of 4 to 18, 20 and electromagnetic regulator 12, 21,
The 22 injection pressure control states are immediately selected, which eliminates the need for the cumbersome operation of multiple input settings such as the opening / closing timing setting for each electromagnetic valve, and the weft insertion condition is set appropriately. Moreover, the operability of setting the weft inserting condition, in which the weft inserting condition is immediately and properly set by a simple operation of the input setting device 28, can prevent a weft inserting condition setting error which leads to a weft inserting error.

Further, in this embodiment, the weft detector 27 installed at the end of the weaving width
Therefore, the arrival time of the weft Y is grasped, and when the arrival time is largely deviated from the set weft insertion end angle, the selected weft insertion condition (particularly the injection pressure) is corrected. A more stable weft insertion state is achieved.

The present invention is of course not limited to the above-mentioned embodiment, and for example, an expression having variables of weft insertion time conditions, fabric conditions and machine frame conditions obtained from past weft flying data (open / close timing of electromagnetic valve, electromagnetic regulator) The same number of equations as the set number of control states, etc.) are input to the control device, and weft insertion time conditions, fabric conditions, input from the input setting device,
Equipped with a winding type weft measuring and storing device that calculates the weft inserting condition from the above formula based on the machine base condition and controls the length measuring storage with a locking pin that is mechanically synchronized with the machine base drive motor. The present invention can be applied to a jet loom or a jet loom equipped with an air pool type weft measuring and storing device. Further, the present invention can be applied only to the injection timing control of the auxiliary nozzle, which is extremely important for the stability of weft insertion called relay injection and has a large number of individual input settings. Further, the present invention can be applied to so-called multicolor weft insertion in which weft insertion of different kinds of wefts is performed.

(Effect of the invention) As described above, according to the present invention, before the normal operation of the loom, a small amount of input data such as the weft insertion time condition, the fabric condition and the machine base condition is used to stabilize the weft insertion of the relay injection. Is very important and automatically selects or calculates weft insertion conditions for the injection timing and injection pressure of auxiliary nozzles with a large number of individual input settings, so it is appropriate to meet the set weft insertion time conditions and fabric conditions. It is possible to obtain such a weft insertion condition immediately and to eliminate an error in setting the weft insertion condition which leads to a weft insertion error.

[Brief description of drawings]

The drawings are block diagrams showing an embodiment of the present invention. Electromagnetic valve 11,14 to 18,20, electromagnetic regulator 12,21,22,
Input setting device 28, control device C, weft Y.

 ─────────────────────────────────────────────────── --Continued from the front page (56) References JP 59-125941 (JP, A) JP 55-26293 (JP, A) JP 60-110952 (JP, A) JP 56- 107046 (JP, A) Actual development Sho 59-109786 (JP, U)

Claims (1)

(57) [Claims] 1. A plurality of auxiliary nozzles for flying the wefts injected from the main weft insertion nozzle into the warp opening, a plurality of electromagnetic valves for controlling the fluid injection from the auxiliary nozzles in a relay manner, and the auxiliary. In a jet loom equipped with a regulator that controls the injection pressure of the fluid supplied to the nozzle,
The control device of the loom, the weft insertion start angle and weft insertion end angle weft insertion time conditions, weaving width and type of yarn, etc. The timing and the injection pressure of the fluid to be supplied to the auxiliary nozzle, or a calculation formula with the above condition as a variable is input and set in advance, and before the normal operation of the loom is started, a specific weft insertion time condition, a fabric condition and a machine condition are set. The platform rotation speed is input to the control device, and based on the input specific weft insertion time condition, the fabric condition and the machine base rotation speed, the relay injection timing and the injection pressure suitable for these conditions are selected or calculated, After setting the selected or calculated relay injection timing and injection pressure in the electromagnetic valve and regulator, the weft insertion conditions are set in the jet loom for operating the loom. Method.