JP2012224959A - Method and apparatus for adjusting injection angle position of sub-nozzle in air injection type loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus capable of precisely adjusting an injection angle position of a sub-nozzle depending on a weaving condition.SOLUTION: A method for adjusting injection angle positions of sub-nozzles in an air injection type loom including a number of the sub-nozzles arranged along a weft insertion channel, and a plurality of electromagnetic closing valves provided for supplying compressed air to the sub-nozzles, one or more of which are connected to each of the electromagnetic closing valves, and in which the sub-nozzles inject air in a unit of the plurality of electromagnetic closing valves to insert weft, comprises: driving at least one of the plurality of electromagnetic closing valves by at least one actuator when at least one of the one or more of the sub-nozzles connected to the at least one of the plurality of electromagnetic closing valves is taken as one adjustment unit; and adjusting the injection angle positions of the sub-nozzles included in the one adjustment unit by the same angle quantity.

Description

  The present invention relates to an air jet loom, in particular, a plurality of sub-nozzles disposed along a weft insertion path, and a plurality of electromagnetic on-off valves provided for supplying compressed air to the sub-nozzles. In an air-injecting loom having an electromagnetic on-off valve to which more than one sub-nozzle is connected, and the sub-nozzle performing air injection for each electromagnetic on-off valve and inserting wefts, for adjusting the injection angle position of the sub-nozzle The present invention relates to a method and an apparatus.

  The “injection angle position” in the present application is an angular position with respect to the axis of the air injection port around the axis of the sub nozzle. More specifically, as shown in FIG. When viewed from the angle, a straight line connecting the axis and the air injection port (center of the air injection port) 22a is an angle formed with respect to the weft insertion direction.

  In the air jet loom, in addition to the main nozzle that injects the weft, a large number of sub nozzles are arranged along the weft insertion path. Further, a plurality of electromagnetic on-off valves are provided to supply pressurized air to these sub-nozzles, and a plurality of sub-nozzles are usually connected to each electromagnetic on-off valve. When the weft insertion is performed, the compressed air is injected from the main nozzle, so that the weft is injected from the main nozzle and flies toward the counter-feeding side. In accordance with the opening and closing during the set period, the pressure air is ejected from the sub nozzle, and the flying of the weft is assisted by the pressure air ejected from the sub nozzle.

  In such an air jet loom, for example, when the machine is changed, the injection angle position of the sub-nozzle may be adjusted so that the flying state of the weft is in accordance with the changed weaving conditions. Conventionally, the adjustment operation of the injection angle position is generally a manual operation by an operator. However, this manual adjustment work is performed by performing a mechanical work for each sub-nozzle, and thus the work requires a great deal of labor and time.

  Therefore, Patent Document 1 discloses a technique using a rack and pinion mechanism as a conventional technique for facilitating the adjustment operation of the injection angle position of the sub nozzle and reducing the time required for the adjustment operation. More specifically, in the prior art disclosed in Patent Document 1, one rack extending along the weft insertion path is provided, and each sub-nozzle is mechanically connected to the rack so that the rack is fed on the yarn feeding side. By operating a rotation mechanism including a provided pinion, the rack is moved to the yarn supply side or the counter yarn supply side, and the injection angle positions of all the sub nozzles are adjusted simultaneously.

  Further, Patent Document 1 discloses that two sub-nozzles are divided into two groups of a yarn feeding side and a counter yarn feeding side, and two racks that extend separately along the yarn feeding side and the counter yarn feeding side of the weft insertion path. It is also disclosed that the ejection angle positions of a plurality of sub-nozzles included in each group are simultaneously adjusted by operating each rack with a rotation mechanism provided corresponding to each rack.

Japanese Utility Model Publication No. 3-15576

  However, in the prior art described in Patent Document 1, when adjusting the injection angle position of the sub nozzles, all the sub nozzles or the sub nozzles on the yarn feeding side and the counter yarn feeding side divided into two groups are adjusted simultaneously and with the same adjustment amount. I can only do it. Therefore, fine adjustment cannot be performed for the adjustment of the injection angle position of each sub nozzle.

  Moreover, since it can be adjusted only manually, it is impossible to adjust the injection angle position of each sub nozzle according to the weaving state during weaving. The term “weaving state” as used herein refers to weaving conditions such as the type of weft, the weaving structure, the rotation speed of the loom, and the time when the tip of the flying weft reaches a predetermined position in the weft insertion path. This refers to the flying state of the weft, such as timing.

  The present invention has been created in view of the above circumstances, and an object of the present invention is to provide a method and an apparatus that can finely adjust the injection angle position of the sub nozzle according to the weaving state.

  The present invention is a plurality of sub-nozzles arranged along a weft insertion path, and a plurality of electromagnetic on-off valves provided for supplying compressed air to the sub-nozzles, each having one or more sub-nozzles connected thereto. It is premised on an air-injecting loom that has an electromagnetic on-off valve and a sub-nozzle injects air for each electromagnetic on-off valve to insert weft.

  And the adjustment method of the injection angle position of the sub-nozzle according to the present invention in the air-jet loom is the method of adjusting the one or more sub-nozzles connected to the electromagnetic on-off valve for at least one of the plurality of electromagnetic on-off valves. At least one of them is driven by at least one actuator as one adjustment unit, and the injection angle position of the sub nozzle included in the one adjustment unit is adjusted by the same angular amount.

  In addition, the adjustment device for the injection angle position of the sub nozzle according to the present invention corresponding to such an adjustment method includes at least one of the plurality of electromagnetic on / off valves connected to the electromagnetic on / off valve. A drive unit that adjusts the ejection angle position of the sub nozzles included in the one adjustment unit with at least one of the sub nozzles as one adjustment unit, and the drive unit includes the sub nozzles included in the one adjustment unit with the same angular amount; And at least one actuator coupled to the sub-nozzle for rotational driving, and a control device for controlling the driving of the actuator so as to adjust the injection angle position of the sub-nozzle included in the one adjustment unit by the same angular amount. It is characterized by that.

According to the adjustment method and the adjustment device according to the present invention, the one adjustment unit is a sub-nozzle connected to one electromagnetic on-off valve, and is composed of at least one sub-nozzle. The minimum number of sub-nozzles in one adjustment unit may be one.
On the other hand, as the adjustment method, the one adjustment unit may include a plurality of sub-nozzles connected to one electromagnetic on-off valve.
Similarly, as the adjustment device, the drive device may include a drive transmission mechanism connected to a plurality of sub-nozzles connected to one electromagnetic on-off valve set as one adjustment unit.

Further, as the adjustment method and the adjustment device, a case where the injection angle position of the sub nozzle is adjusted as preset in the database can be considered.
Therefore, as an adjustment method, a database including the injection angle position corresponding to each of a plurality of weaving conditions that can be set for weaving with the air jet loom is set in advance, and the set weaving conditions are set. The corresponding injection angle position may be selected from the database, and the actuator may be driven based on the selected injection angle position.
Similarly, as the adjustment device, the control device sets a database including the injection angle position corresponding to each of a plurality of weaving conditions that can be set in the loom for weaving, and the setting device A drive controller that selects the injection angle position corresponding to the weaving condition set from the database and controls the driving of the actuator based on the selected injection angle position may be included.

Further, as the adjustment method and adjustment apparatus using the database, both the case where the adjustment is performed while the loom is stopped and the case where the adjustment is automatically performed during the weaving of the loom can be considered.
Among these, in the initial setting in the weaving preparation stage, the former needs to change the setting value of the weaving condition when the injection angle position is adjusted according to the weaving condition set by the operator or during the weaving. In this case, when the setting value is changed by the operator while the loom is stopped, the injection angle position is adjusted in accordance with the change.

On the other hand, in the latter case, when the air jet loom is a loom set to automatically change the weaving conditions during weaving, the jet angle position is adjusted correspondingly, As the adjustment method, as the weaving conditions are switched during weaving, the injection angle position corresponding to the weaving conditions after switching is selected from the database, and the actuator is selected based on the selected injection angle position. It may be driven.
Similarly, as the adjusting device, the drive controller may select the injection angle position corresponding to the weaving condition after switching from the database of the setting device as the weaving condition is switched during weaving. .

In particular, when the air jet loom is a multi-color weft insertion loom and the weaving condition is a weft selection pattern set for selectively wefting two or more wefts having different yarn types. As an adjustment method at that time, the injection angle position corresponding to each weft thread to be inserted into the database is set, and the weft thread after switching is handled as the weft thread is switched during weaving. The actuator may be driven based on the injection angle position.
Similarly, as the adjusting device, a database including the injection angle position corresponding to each weft thread inserted as the weaving condition is set as the weaving condition, and the drive controller is used for weaving. The injection angle position corresponding to the weft after switching may be selected from the database of the setting device with the switching of the middle weft.

  Further, in the adjustment method and the adjustment device as described above, it is detected by a sensor whether or not the adjustment is properly performed up to the set injection angle position, and the injection angle position is not a set value. In some cases, readjustment may be performed.

Specifically, as such an adjustment method, the injection angle position after the change of the injection angle position is detected, the detected value is compared with the injection angle position selected according to the weaving conditions, If there is a deviation between them, the actuator may be driven so as to eliminate the deviation.
Similarly, as such an adjusting device, an angular position detection sensor for detecting the injection angular position is provided, and the control device detects the detected value of the angular position detection sensor after changing the injection angular position and the weaving. A discriminator for comparing the injection angle position selected according to a condition; and the drive controller detects the selected injection angle position and the angular position detection sensor based on a comparison result by the discriminator. When there is a deviation between the values, the actuator may be driven so as to eliminate the deviation.

  Further, the adjustment method and the adjustment device according to the present invention are not limited to changing the injection angle position according to the change in the weaving condition as described above, but depending on the flying state of the weft detected by the sensor, This includes the case of adjusting the injection angle position.

In this case, as an adjustment method, the air jet loom includes a passage detection sensor that detects the passage of the tip of the weft thread to be inserted, and the rotation of the loom main shaft at the time when the tip of the weft thread passes the position of the passage detection sensor. A reference value for the angle is set in the setting device in advance, the reference value is compared with the rotation angle when the weft is actually detected, and if there is a deviation between the two, the deviation is eliminated. It is also possible to drive the actuator in the direction of movement.
Similarly, as the adjustment device in that case, the control device includes the passage detection sensor, and the control device compares the setter with the reference value and the rotation angle when the weft is actually detected, In the case where a deviation occurs between the two as a result of comparison by the comparator, a drive controller that controls the driving of the actuator in a direction to eliminate the deviation may be included.

  Here, “to drive the actuator in a direction to eliminate the deviation” means that the time point when the tip of the weft passes the position of the passage detection sensor to the reference value in order to reduce or eliminate the deviation. This means that the actuator is driven to rotate the sub-nozzle so that the approaching weft is in a flying state. However, the drive amount of the actuator in that case is not limited to the one that corresponds to the deviation and that the deviation is eliminated by a single drive, but is driven by a predetermined amount that is preset according to the direction of the deviation. It is good to do.

  According to the present invention, regarding the adjustment of the injection angle position, one or more sub nozzles of the sub nozzles connected to the electromagnetic on-off valve are set as one adjustment unit, and the injection angle position of the sub nozzle can be adjusted by the actuator in that unit. As a result, fine adjustment is possible according to the weaving state, optimal weft insertion according to the weaving state can be realized, and weaving property and quality of the woven fabric can be improved.

  Further, by providing a database relating to the injection angle position, selecting the injection angle position corresponding to the weaving condition from the database, and driving the actuator based on the selected injection angle position, When adjusting the sub nozzle injection angle position when setting or changing the weaving conditions with the loom stopped, the operator simply sets the weaving conditions necessary for weaving, and the weaving set accordingly. Since the injection angle position corresponding to the condition is selected from the database and the adjustment is performed, the setting work by the operator can be facilitated, and the labor and time required for the adjustment work can be reduced.

  Further, in the air jet loom in which the weaving conditions (for example, the weft insertion pattern for selectively wefting two or more wefts having different thread types) are changed during weaving, along with the change of the weaving conditions, The injection angle position corresponding to the changed weaving conditions is selected from the database, and the actuator is driven based on the selected injection angle position to automatically adjust the injection angle position. Without stopping, the injection angle position can be optimized according to each weaving condition during weaving, and optimum weft insertion is possible in weaving under each weaving condition.

  In addition, an angular position detection sensor for detecting the injection angle position of the sub-nozzle is provided. The angular position detection sensor detects the injection angle position adjusted in accordance with the change of the weaving condition, and the detected value and the changed value are changed. By comparing the injection angle position (set value) set according to the weaving conditions, and driving the actuator so as to eliminate the deviation when there is a deviation between the two, the injection angle The position can be surely optimized according to the weaving conditions.

  In addition, a passage detection sensor for detecting the passage of the tip of the weft is provided, and the tip of the weft passes the detection value of the passage detection sensor (the rotation angle of the loom main shaft when the weft is actually detected) and the position of the sensor. Compared to the reference value for the rotation angle of the loom main shaft at the time, and if there is a deviation between them, the actuator is driven in a direction to eliminate the deviation, so that the weft flying state is met Thus, the injection angle position is changed, and as a result, the flying state of the weft yarn that has changed due to the progress of weaving or disturbance can be corrected, and proper weft insertion can be maintained.

It is explanatory drawing which shows the principal part in the weft insertion apparatus of an air injection type loom, and the adjustment apparatus of the injection angle position of a sub nozzle. It is explanatory drawing which shows the structure of a sub nozzle, and its support structure. It is explanatory drawing which shows the modification of the Example of FIG. It is explanatory drawing which shows another Example in the adjustment apparatus of the injection angle position of a sub nozzle. FIGS. 5A to 5C are explanatory views showing an example of a structure for driving a sub nozzle indirectly through a drive transmission mechanism. It is explanatory drawing which shows the example of the structure which rotates two sub nozzles simultaneously. It is explanatory drawing of an injection angle position.

  FIG. 1 shows a main part of a loom equipped with a multicolor weft insertion device as an example of an air jet loom to which the present invention is applied. FIG. 1 also shows a two-color weft insertion device 11 for weft-inserting two types of weft yarns (the weft yarn a wound around the yarn feeder A and the weft yarn b wound around the yarn feeder B). The two-color weft inserting device 11 corresponds to the multi-color weft inserting device of the present invention.

  In the weft insertion device 11 of FIG. 1, the weft yarn a and the weft yarn b are drawn from the yarn feeders A or B supported by the respective yarn feeder stands 12, for example, the bobbin of the drum-type length measuring storage device 13. The yarn is wound around the outer peripheral surface of the drum 15 by the rotational movement of the yarn winding arm 14 while being guided to the inside of the winding arm 14 and being locked by the locking pin 16 on the outer peripheral surface of the drum 15 in a stationary state. As a result, the weft yarn a and the weft yarn b having a length required for one weft insertion are wound around the outer peripheral surface of the drum 15 and stored until the weft insertion.

  The length measuring storage device 13 (rotational movement of the yarn winding arm 14 and forward / backward movement of the locking pin 16) and the main nozzle 21 for weft insertion are made into a weft insertion pattern by the weft insertion control unit 44 of the weft insertion control device 43. It operates based on a selected weft selection pattern.

  When the locking pin 16 corresponding to the weft thread (weft thread b in the illustrated example) selected by the weft insertion control unit 44 is driven by the operating unit 17 at the weft insertion start timing and is retracted from the outer peripheral surface of the drum 15, the drum The weft b having a length necessary for one weft insertion wound around the outer periphery of the roller 15 is in a state where it can be unwound on the drum 15. The weft b passed from the drum 15 to the main nozzle 21 for weft insertion is unwound from the drum 15 and inserted by the main nozzle 21 performing an injection operation.

  The main nozzle 21 corresponding to the selected weft b starts injection of pressurized air toward the opening of the warp at the set weft insertion start timing, and continues the injection over the set injection period, A weft b having a predetermined length is injected and inserted into the opening. By this weft insertion operation, the weft b travels along the weft insertion path in the opening. The pressure air is supplied from a pressure air source 32, adjusted to an appropriate air pressure for weft insertion by a pressure regulator 33, and then supplied to the main nozzle 21 via an electromagnetic on-off valve 34. The electromagnetic on-off valve 34 operates based on the weft selection pattern defined in the weft insertion pattern under the control of the weft insertion control unit 44.

  As described above, the weft insertion device 11 of FIG. 1 corresponds to the weft insertion of two colors, but in the case of weft insertion of three colors or more, the yarn feeder, the length measuring storage device 13, the main nozzle 21 and the like (described later) The sub-nozzle 22, the stretch nozzle 23, and the weft feeler 31 are installed in accordance with the number of multiple colors (the number of wefts), and the weft insertion operation is performed according to the weft selection pattern defined in the weft insertion pattern. In the case of one color weft insertion, only one yarn feeder, length measuring storage device 13, main nozzle 21 and the like are installed.

  In the process in which the weft b injected from the main nozzle 21 flies along the weft insertion path in the opening, the multiple sub-nozzles 22 direct the pressurized air in the weft insertion path in the direction of the weft b. It sprays like a relay and assists the flying weft b in the weft insertion direction. More specifically, the plurality of sub-nozzles 22 are arranged at intervals along the weft insertion path, and more than one (four in the illustrated example) from the yarn feeding side toward the counter yarn feeding side. ) Are connected to a common electromagnetic switching valve 36. Thus, one sub-nozzle group is formed by the plurality of sub-nozzles 22 connected to the common electromagnetic switching valve 36. In the figure, the sub-nozzle groups are displayed as G1, G2, G3,.

  Further, the pressure air is supplied from the pressure air source 32, adjusted to an appropriate air pressure by the pressure regulator 35, and then supplied to the sub nozzles 22 of each sub nozzle group through each electromagnetic on-off valve 36. Each electromagnetic on-off valve 36 is under the control of the weft insertion control unit 44 at the time of weft insertion, supplies pressure air to the sub nozzles 22 of the corresponding sub nozzle group for the set injection period, and pressure air from the sub nozzles 22 is supplied. The flying weft b is assisted in the weft insertion direction.

  When the tip of the assisted weft b reaches the counter feed yarn side rather than the sub nozzle 22 positioned closest to the counter feed yarn side, tension is applied to the weft b by the injection of pressure air from the stretch nozzle 23. For this reason, the stretch nozzles 23 are arranged at a distance from the sub-feeding side rather than the sub-nozzles (most sub-feeding side sub-nozzles) 22 arranged along the weft insertion path. In addition, an electromagnetic on-off valve 37 is connected to the stretch nozzle 23.

  When the weft b is normally inserted by the injection operation of the main nozzle 21, the sub nozzle 22 of each sub nozzle group, and the stretch nozzle 23, the weft b is woven before weaving the woven fabric by a not-illustrated scissors movement. After being beaten and woven into the woven fabric, it is cut by a yarn feed cutter (not shown) on the weft insertion side and separated from the weft b inside the main nozzle 21. Whether or not the weft insertion has been normally performed is determined by a main controller (not shown) of the loom based on a signal from the weft feeler 31 that detects the arrival of the weft b. In the illustrated example, the weft feeler 31 is disposed outside a warp row (not shown) on the counterfeed side (on the counterfeed side from the stretch nozzle 23 along the weft insertion path).

  In order to detect the rotation angle of the main shaft 41, an encoder 42 is connected to the main shaft 41, and the encoder 42 generates a signal of the rotation angle of the main shaft 41 during weaving, which is not shown in the main controller of the loom, Also output to the weft insertion control unit 44 and the weft selection signal generation unit 45 of the weft insertion control device 43.

  The weft selection signal generation unit 45 of the weft insertion control device 43 grasps the weaving cycle of the loom based on the rotation angle from the encoder 42 and follows the weft selection pattern preset for the weft insertion pattern. The weft b) is selected for each weaving cycle, and a weft selection signal S1 corresponding to the selected weft is output to the weft insertion control unit 44 for each weaving cycle. The weft insertion control unit 44 controls the operation of the length measuring storage device 13, the main nozzle 21, the sub nozzle 22 and the like corresponding to the selected weft based on the set control value under an appropriate rotation angle and is selected. The weft insertion operation of the weft is executed.

  The weft insertion control device 43 described above is configured as a combination of blocks according to function. The weft insertion control device 43 may be realized by combining devices made up of blocks, or by installing predetermined software on a computer and executing the software, the computer input / output means, storage means, arithmetic operation It is also possible to configure each block in which the control means and software cooperate and to realize the combination by combining these blocks.

  An input / setting display device 46 is communicably connected to the weft insertion control device 43 in order to set the weaving condition data and the like for the weft insertion control device 43.

  The input / setting display device 46 is a display device. A part of the display screen also serves as a touch panel type input device, and various data input settings and display requests or various requests can be made by touching the buttons on the display screen. It is configured to enable such commands.

  In addition to the basic configuration described above, the weft insertion device 11 of the air jet loom is provided with a device for adjusting the injection angle position of the sub nozzle 22. In the illustrated example, as described above, each sub-nozzle group G1, G2,... Is composed of four sub-nozzles 22 connected to the corresponding electromagnetic on-off valves 36. In this embodiment, all sub-nozzle groups are groups to which the sub-nozzles 22 to be adjusted belong, that is, groups to be adjusted, and all (four) sub-nozzles 22 included in each sub-nozzle group are to be adjusted. Four sub nozzles 22 in each sub nozzle group are set as one adjustment unit. The adjustment device is configured as a drive device that adjusts the ejection angle positions of all the sub-nozzles 22 included in one adjustment unit by the same angle amount.

  In the present embodiment, the driving device is configured by a dedicated actuator 51 provided for each sub nozzle 22 and a sub nozzle control device 61a as a control device. Further, as the actuator 51, a direct drive motor (hereinafter referred to as “DD motor”) that directly drives a drive object without using a drive transmission mechanism such as a gear is used. The sub-nozzle control device 61a controls the driving of the DD motor 51 so as to adjust the injection angle positions of all the sub-nozzles 22 included in one adjustment unit by the same angle amount, although details will be described later. To do.

  Furthermore, in the present embodiment, the adjustment of the injection angle position of the sub nozzle 22 is changed by the driving device in accordance with the selection pattern of the weft yarn as the weaving condition as the weft type is changed during weaving.

  FIG. 2 shows the sub nozzle 22 and its supporting structure.

  The sub-nozzle 22 is a hollow rod that extends in a straight line. The base end of the sub-nozzle 22 opens and serves as a supply port for pressurized air. The tip of the sub-nozzle 22 is closed in a bag shape and air is injected onto the side of the tip. A mouth 22a is formed. The air injection port 22 a penetrates in a direction substantially orthogonal to the axial direction of the sub nozzle 22. Each sub-nozzle 22 is formed thicker in a step shape toward the outside in the radial direction on the base end side than the distal end portion where the air injection port 22a is provided, and is provided for each sub-nozzle 22 in this thick step-shaped portion 22b. It is supported by a dedicated nozzle holder 24 so as to be rotatable. Such a dedicated nozzle holder 24 is fixed to the lead holder 25 at intervals along the weft insertion path, whereby each sub nozzle 22 is arranged along the weft insertion path. Note that the lead holder 25 supports a hook (not shown).

  The nozzle holder 24 includes a bearing 26 that rotatably supports the sub nozzle 22 and a DD motor 51 as a drive source that rotates the sub nozzle 22. The bearing 26 is disposed concentrically with the sub nozzle 22 inside the nozzle holder 24, and the inner ring is assembled to the sub nozzle 22 so as not to rotate, and the outer ring is assembled to the nozzle holder 24 so as not to rotate.

  The DD motor 51 is disposed concentrically with the sub-nozzle 22 inside the nozzle holder 24, and is provided so as to face the inner peripheral surface of the stator 51a, and a stator 51a that is non-rotatably assembled to the nozzle holder 24 on the outer peripheral surface. And the rotor 51 b fixed to the outer peripheral surface of the sub nozzle 22. Accordingly, when the rotor 51b is driven to rotate, the sub nozzle 22 rotates together with the rotor 51b, whereby the air injection port 22a rotates about the axis of the sub nozzle 22 and the injection angle position of the sub nozzle 22 changes. Is done. Each DD motor 51 is connected to the sub-nozzle control device 61a, and is driven to rotate by being supplied with an excitation current from the sub-nozzle control device 61a to the stator 51a.

The sub-nozzle control device 61 a includes a drive controller 62 and a setting device 63. The setting device 63 is communicably connected to the input / setting display device 46. Then, to the setting device 63, a database relating to the injection angle position of each sub-nozzle group input and set by the input operation in the input / setting display device 46 is transferred from the input / setting display device 46, and the transferred database is set. Is done. In this database, the injection angle position of each sub-nozzle group (specifically, the injection angle of the sub-nozzle 22 included in each sub-nozzle group, which is one adjustment unit) in a form corresponding to the weft type (each of the weft a and the weft b). Position) is set.
That is, in this database, for example, in the case where the weft type to be inserted corresponding to each of the weft yarns a and b is the weft yarn a, the injection angle position θ of each sub-nozzle group is set as the sub-nozzle group G1: θ =. x1 °, sub-nozzle group G2: θ = x2 °, sub-nozzle group G3: θ = x3 °, and so on. : Θ = y2 °, sub nozzle group G3: θ = y3 °,...

  The drive controller 62 is communicably connected to the setting device 63 and is also communicably connected to the weft selection signal generator 45 in the weft insertion control device 43. A DD motor 51 is connected to the drive controller 62. Then, the weft selection signal S1 output from the weft selection signal generator 45 for each weaving cycle in order to switch the weft inserted during weaving is also input to the drive controller 62. Accordingly, the drive controller 62 reads the set value of the injection angle position corresponding to the weft selection signal S1 from the weft selection signal generator 45 from the database set in the setting unit 63. Then, the drive controller 62 drives the DD motor 51 by supplying an excitation current to the DD motor 51 in accordance with the setting value read from the setting device 63.

The apparatus for adjusting the injection angle position of the sub-nozzle 22 adjusts the injection angle position of the sub-nozzle 22 by a method including the following procedure.
(1) At the weaving preparation stage, the input / setting display device 46 sets a database of the above-described contents for the setting device 63.
(2) During weaving, the weft selection signal generator 45 selects the weft according to the set weft selection pattern based on the rotation angle (hereinafter referred to as “crank angle”) signal of the main shaft 41 from the encoder 42. The signal S1 is output to the weft insertion control unit 44 every weaving cycle. The weft insertion control unit 44 selects a weft insertion condition corresponding to the selected weft among a plurality of set weft insertion conditions based on the weft selection signal S1, and electromagnetically opens and closes according to the selected weft insertion condition. The valves 34, 36, 37, etc. are driven to execute the weft insertion of the selected weft. In this embodiment, the weft selection signal S1 is output from the weft selection signal generator 45 after the end of weft insertion and before the start of the next weaving cycle (crank angle 340 °) (for example, crank angle 340 °). Shall be.
(3) The weft selection signal S1 from the weft selection signal generator 45 is also output to the drive controller 62 of the sub nozzle control device 61a for each weaving cycle. The drive controller 62 reads the set value of the injection angle position of each sub-nozzle group corresponding to the selected weft type from the setter 63 in response to the input of the weft selection signal S1.
(4) Next, the drive controller 62 sets the injection angle position of each sub-nozzle group (more specifically, the injection angle position of the sub-nozzle 22 included in each sub-nozzle group) to the set value based on the read setting value. The corresponding DD motors 51 are driven all at once. Specifically, the drive controller 62 obtains an angle difference between the set value of the current injection angle position and the read set value of the injection angle position, and drives the rotor 51b of the DD motor 51 by the rotation angle of the angle difference. An excitation current is supplied to the stator 51a of the DD motor 51 so as to rotate, the rotor 51b of the DD motor 51, and then the sub nozzle 22 is rotated, and the injection angular position of the sub nozzle 22 is read out. Change to the set value.
(5) After changing the injection angle position of the sub nozzle 22 by the rotational drive of the rotor 51b of the DD motor 51, the drive controller 62 sets the excitation current to the level of the holding current so as to hold the changed injection angle position. The drive of the DD motor 51 is controlled.

  The change in the injection angle position of the sub nozzle 22 (driving the DD motor 51) by the drive controller 62 in (4) is, for example, the time when weft insertion is started in the next weaving cycle when the weft selection signal S1 is generated. Completed before. However, since the weft selection signal S1 is output every weaving cycle, in the case of a weft selection pattern in which wefts of the same type are successively inserted, the set value of the read injection angle position is It may be the same as the last weft insertion. In that case, the drive controller 62 determines that the angle difference is zero, and controls the drive of the DD motor 51 so as to hold the rotation angle of the rotor 51b (the injection angle position of the sub nozzle 22) at the current position.

  In the apparatus for adjusting the injection angle position of the sub-nozzle 22 according to the present invention described above as an example, the injection angle position is changed according to the weft type to be inserted in the above embodiment, but the present invention is not limited to this. Alternatively, the injection angle position may be changed in accordance with other weaving conditions (woven fabric structure, loom rotational speed, etc.).

  Further, as a modification of the embodiment, in an air jet loom (for example, a pile loom) in which a plurality of weaving conditions are switched simultaneously during weaving, an injection angle position for each weaving pattern in which the plurality of weaving conditions are switched. May be changed. In this case, the injection angle position for each weaving pattern set in the database is set in consideration of the plurality of weaving conditions.

  In the above-described embodiment, the drive controller 62 starts control for adjusting the injection angle position in response to the input of the weft selection signal S1, and the change of the injection angle position starts the weft insertion in the next weaving cycle. However, instead of this, the injection angle position may be changed at a preset crank angle. In this case, the crank angle (set value) is set in the setter 63, and the crank angle signal from the encoder 42 is also output to the drive controller 62 (see the dotted arrow in FIG. 1). When the crank angle reaches the set value set in the setting device, the drive controller 62 starts control for adjusting the injection angle position, and adjusts the injection angle position of the sub nozzle 22.

  And when the drive controller 62 controls according to the crank angle set in that way, it changes into changing the injection angle position of all the sub nozzles 22 used as adjustment object simultaneously like the said Example. Thus, the injection angle position may be changed according to the injection timing of each sub nozzle 22. That is, when the sub-nozzles 22 of a plurality of sub-nozzle groups are to be adjusted in units of sub-nozzle groups as in the above-described embodiment, the injection start time of each sub-nozzle group is different, so the adjustment time according to each injection start time May be different.

  Further, when adjustment is performed during weaving according to the set value of the injection angle position, the injection angle position of the sub-nozzle 22 to be adjusted is detected after adjustment, and the adjusted injection angle position is set to the set injection angle position. If a positional deviation occurs, the positional deviation may be corrected. By the way, `` when misalignment occurs '' means that the injection angle position reaches the set value due to malfunction of the control due to the influence of disturbance, other parts such as warp, or malfunction of the device. This refers to the case where there is a gap between the adjusted injection angle position and the set value without adjustment.

  FIG. 3 shows a sub-nozzle control device 61b in the apparatus for adjusting the injection angle position of the sub-nozzle 22 capable of correcting such positional deviation as a modification of the sub-nozzle control device 61a of the embodiment of FIG. . In addition, this adjustment device is provided with a sensor (angular position detection sensor) that is a sensor (not shown) provided in each actuator 51 or each sub-nozzle 22 and detects the ejection angle position of the sub-nozzle 22. The sub nozzle control device 61b includes a discriminator 64 connected to the angular position detection sensor in addition to the drive controller 62 and the setting device 63 of the sub nozzle control device 61a in the embodiment of FIG.

  The discriminator 64 in the sub-nozzle control device 61b is also communicably connected to the drive controller 62. In such a sub nozzle control device 61b, after adjusting the injection angle position of the sub nozzle 22, the injection angle position is detected by the angle position detection sensor, and the detected value of the detected injection angle position is sent to the discriminator 64. Are output. The discriminator 64 compares the detected value with the set value read from the drive controller 62, and outputs a discrimination result to the drive controller 62 when there is a deviation between the two as a comparison result. .

More specifically, the adjusting device corrects the positional deviation of the injection angle position of the sub nozzle 22 by the method according to the following procedure.
(1) The drive controller 62 rotationally drives the DD motor 51 for adjusting the injection angle position, and then the set value of each sub-nozzle group to be adjusted read from the setting unit 63 (more specifically, each sub-nozzle group Are set to the discriminator 64).
(2) The angular position detection sensor detects the injection angular position of the sub nozzle 22, and indicates the detected value at a predetermined timing (for example, a preset crank angle) after the rotation driving of the DD motor 51 is completed. A detection signal is output to the discriminator 64.
(3) The discriminator 64 compares the set value and the detected value for each sub-nozzle group, and if a deviation (deviation) occurs, a deviation signal indicating the deviation amount (deviation amount of the rotation angle). Is output to the drive controller 62 as a discrimination result. If there is no deviation, it is assumed that there is no deviation amount (= 0), and a deviation signal indicating the deviation amount = 0 is output to the drive controller 62 or a deviation signal is output to the drive controller 62. do not do.
(4) If there is a deviation, the drive controller 62 eliminates the deviation amount on the basis of the deviation signal. Specifically, the drive controller 62 indicates the DD motor by the rotation angle of the angular difference where the deviation amount = 0. The DD motor 51 is driven by supplying an excitation current to the stator 51a of the DD motor 51 so that the rotor 51b of the 51 is rotated.
If there is no deviation, the drive controller 62 moves the rotor 51b of the DD motor 51 to the current angular position based on a deviation signal indicating that the deviation amount = 0 or no deviation signal. The drive of the DD motor 51 is controlled so as to be held at the same time.

  In the modified example of FIG. 3, in the above description, an angular position detection sensor is provided for each actuator 51 or each sub nozzle 22 so as to detect the injection angle position of each sub nozzle 22, and a response is made based on each detection result. However, in place of this, one of the plurality of sub nozzles 22 included in one adjustment unit is used as a representative, and the injection of the sub nozzle 22 is performed. An angular position detection sensor may be provided so as to detect only the angular position, and control related to the above-described positional deviation correction of all the sub-nozzles 22 included in one adjustment unit may be performed based on the detection result.

  In the modification of FIG. 3, it is determined whether or not there is a positional deviation every time the injection angle position is adjusted. However, the present invention is not limited to this, and the position is changed every time the injection angle position is adjusted a plurality of times. It may be determined whether or not a deviation has occurred.

  In the embodiment described above, the injection angle position is changed for each weaving condition as the weaving condition is switched. Instead, the flying state of the weft is detected and the detection is performed. The injection angle position may be changed based on the result.

  That is, in the embodiment of FIG. 1, it is assumed that the flying state of the weft changes with the switching of the weaving conditions, and the injection angle position is changed with the switching of the weaving conditions. However, the change in the weft flying state is caused by the weft unwinding resistance with the progress of weaving even in the weft unwound from the same yarn feeder (yarn feeder A or yarn feeder B). This may occur due to changes in Therefore, it is good also as what detects the flying state of a weft and adjusts an injection angle position based on the detection result. Regarding the detection of the weft flying state, the timing (crank angle) when the tip of the weft passes a predetermined position in the weft insertion path changes when the weft flying state changes. For example, a sensor that detects the passage (arrival) of the tip of the weft yarn may be provided at a predetermined intermediate position or a predetermined position on the counter yarn feeding side, and the flying state may be detected by the detection.

  Hereinafter, an embodiment of an adjusting device that adjusts the injection angle position of the sub nozzle 22 based on the detection result of the weft flying state as described above will be described with reference to FIG. 4. However, since the adjustment device according to this embodiment is basically the same as the embodiment of FIG. 1 except for the sub nozzle control device, only the sub nozzle control device 61c according to this embodiment is shown in FIG. The sub-nozzle control device 61c will be mainly described.

  As shown in FIG. 4, the sub nozzle control device 61c has a comparator 65 in addition to the drive controller 62 and the setting device 63 of the sub nozzle control device 61a in the embodiment of FIG. Further, it is assumed that the comparator 65 in the sub-nozzle control device 61c is communicably connected to the drive controller 62, the setting device 63, and a main control device (not shown).

  In this embodiment, the weft feeler (see FIG. 1) provided outside the warp row on the non-feed side of the air jet loom is used as a sensor (passage detection sensor) for detecting the passage (arrival) of the tip of the weft. Reference) 31 is used. The weft feeler 31 (passage detection sensor) is connected to the main control device, detects that the front end of the weft inserted has reached its detection area, and accordingly sends a weft detection signal. Output to the main controller. Then, based on this weft detection signal, the main control device obtains the weft arrival timing (actual weft arrival timing (detection value)) and outputs the obtained detection value to the comparator 65.

On the other hand, a reference value that is a target arrival timing is set in the setting unit 63 of the sub-nozzle control device 61c, and a sub-nozzle corresponding to the deviation amount between this reference value and the actual weft arrival timing (detection value). An angle adjustment amount of 22 is set.
The comparator 65 of the sub-nozzle control device 61c reads out the reference value from the setting device 63 in response to the input of the detection value, and compares the detection value with the reference value. If there is a deviation between the two as a comparison result, the comparator 63 outputs a deviation signal indicating the deviation amount to the drive controller 62.

More specifically, the adjusting device changes the injection angle position of the sub nozzle 22 by the method according to the following procedure.
(1) When the passage detection sensor (weft feeler 31) detects the passage of the tip of the weft thread inserted, it outputs a detection signal indicating this to a main controller (not shown).
(2) The main control device obtains the actual weft arrival timing (detection value) based on the detection signal, and outputs the obtained detection value to the comparator 65.
(3) The comparator 65 reads the target arrival timing (reference value) from the setter 63 according to the input of the detection value, and compares the read reference value with the detection value.
(4) If there is a deviation between the reference value and the detected value as a result of the comparison, the comparator 65 outputs a deviation signal indicating the deviation amount to the drive controller 62. If there is no deviation, it is determined that there is no deviation amount (= 0), and a deviation signal indicating the deviation amount = 0 is output to the drive controller 62 or no deviation signal is output to the drive controller 62. .
(5) If there is a deviation, the drive controller 62 drives the rotor 51b of the DD motor 51 in a direction to eliminate the deviation based on the deviation signal, and changes the injection angle position. Specifically, the drive controller 62 reads the angle adjustment amount corresponding to the deviation amount from the setting device 63, and rotates the rotor 51b of the DD motor 51 by the rotation angle corresponding to the read angle adjustment amount. An excitation current is supplied to the stator 51 a of 51 to drive the DD motor 51.
Further, when there is no deviation, the drive controller 62 moves the rotor 51b of the DD motor 51 to the current angular position based on a deviation signal indicating that deviation amount = 0 or no deviation signal. The drive of the DD motor 51 is controlled so as to be held at the same time.
The above processes (1) to (5) may be performed every weft insertion, or may be performed periodically, such as once every several times, or at a specially set time. It may be done.

  In the adjustment method of the present embodiment described above, the setting device 63 uses the deviation amount as a parameter and the angle adjustment amount according to the deviation amount is set. However, the deviation amount and the sub nozzle 22 before adjustment are set. The injection angle position may be used as a parameter, and an angle adjustment amount corresponding to them may be set. For example, when the deviation amount is γ and the injection angle position of the sub-nozzle 22 before adjustment is θ1, the angle adjustment amount is α, and even if the deviation amount is γ, the sub-nozzle 22 before adjustment is the same. When the injection angle position is θ2, the angle adjustment amount is β. In this way, the setting of the injection angle adjustment amount becomes more precise.

  In addition, the angle adjustment amount corresponding to the deviation amount is set in advance and the DD motor 51 is driven according to the obtained deviation amount. Instead, the angle adjustment amount is determined based only on the direction of the deviation. It is also possible to adjust only the angle adjustment amount. The direction of deviation referred to here is the magnitude relationship of the detected value with respect to the reference value, and is either + or-. In this case, only a predetermined angle adjustment amount is set in the setting device 63 instead of the angle adjustment amount according to the deviation amount. However, the angle adjustment amount set in the setting device 63 may be different depending on the deviation direction (+, −).

  Specifically, in the control (5), when a deviation occurs, the drive controller 62 reads the angle adjustment amount from the setting device 63 according to the input of the deviation signal, and indicates the deviation signal. An excitation current is supplied to the stator 51a of the DD motor 51 so that the rotor 51b of the DD motor 51 is rotated by a rotation angle corresponding to the read angle adjustment amount in a direction corresponding to the deviation direction. 51 is driven. Then, the above-described (1) to (4) and the process of (5) including the current correspondence considering only the direction of the deviation are repeated until the deviation is eliminated.

  By the way, in the above, the detection of the weft flying state is detected at the timing when the tip of the weft reaches the arrangement position of the weft feeler 31 provided on the non-feed side of the weft insertion path. The detection is not limited to this, and may be performed by detecting the timing at which the leading end of the weft reaches the predetermined position (hereinafter referred to as “intermediate predetermined position”) in the weft insertion path in the weaving width direction. Instead of the weft feeler 31 on the counter feed yarn side, a unwinding sensor attached to the length measuring storage device 13 or a dedicated sensor provided at an intermediate predetermined position is used.

  For example, in the case where an unwinding sensor is used, this unwinding sensor is attached to the length measurement storage device 13 described in the embodiment of FIG. 1 and is wound around the drum 15 of the length measurement storage device 13. It detects the unwinding of each weft yarn. More specifically, a weft having a length necessary for one weft insertion is wound around the outer peripheral surface of the drum 15 of the length measuring storage device 13 shown in FIG. Has been. At the start of weft insertion, the locking pin 16 retreats from the outer peripheral surface of the drum 15 to release the weft locking, and the main nozzle 21 performs the injection operation, so that the weft is unwound from the drum 15. Weft insertion is performed. At this time, the unwinding sensor detects the number of times the unwound weft has crossed the sensor area of the unwinding sensor, and outputs the signal to the weft insertion control device 43 (weft insertion control unit 44) and the like. As a result, the weft insertion control device 43 grasps that the weft of a predetermined length has been unwound from the drum 15, and based on that, the weft thread is again locked by the locking pin 16, so that the predetermined length is reached. Insert the weft.

  In the case where the unwinding sensor is used, for example, if wefts of a length necessary for one weft insertion are four turns with respect to the drum 15, two wefts are unwound during actual weft insertion ( The detection timing corresponds to the end of the weft reaching an intermediate predetermined position. Thus, based on the signal from the unraveling sensor, for example, the main controller may determine the timing (detected value) based on the crank angle and output the determined detected value to the comparator 65. In this case, the setting unit 63 is set with a crank angle as a reference value for the timing at which the two wefts are unwound. And the comparator 65 should just compare the said reference value and the said detected value.

  When a dedicated sensor is used, a sensor is provided so that the tip of the weft can be detected in the vicinity of an intermediate predetermined position, and the setting device 63 has a timing at which the tip of the weft passes through the position of the sensor. It is assumed that the reference value is set by the crank angle. Then, based on the signal from the sensor, for example, the main controller determines the arrival timing (detection value) of the weft at an intermediate predetermined position based on the crank angle, and the comparator 65 calculates the detection value and the What is necessary is just to compare with a reference value.

  The present invention is not limited to the embodiments described above, and the following modifications are possible.

  Regarding the air-injecting loom as a premise of the present invention, in the above embodiment, a plurality of (four in the above embodiment) sub-nozzles 22 are connected to one electromagnetic on-off valve 36, and a plurality of sub-nozzle groups are provided. However, the present invention is not limited to this, and only one sub nozzle 22 may be connected to one electromagnetic on-off valve 36. In this case, although no group is actually formed, it can be said that one sub-nozzle 22 corresponds to one sub-nozzle group. In this case, the maximum number of sub nozzles 22 included in one adjustment unit is one. That is, the injection angle position of the sub nozzle 22 is adjusted in units of one. In the case where one sub-nozzle group is composed of a plurality of sub-nozzle groups, the number of the sub-nozzle groups is not limited to four in the above embodiment, but may be three or less, or five or more.

  Moreover, in the said Example, about the sub-nozzle group comprised by the sub nozzle connected to the common electromagnetic switching valve 36, all the sub-nozzle groups are the groups used as the above-mentioned adjustment object, ie, the group to which the sub-nozzle 22 used as the adjustment object belongs. And adjusting the injection angle positions of all the sub-nozzles 22 included in each sub-nozzle group, that is, adjusting all the sub-nozzles 22 on the loom, but the adjustment device according to the present invention is not limited thereto. In this case, one or more sub nozzles connected to at least one electromagnetic on-off valve 36 may be adjusted.

  For example, when one adjustment unit is set for each sub-nozzle group, the sub-nozzle group that is positioned closest to the counter-feeding side has a large influence on the degree of extension of the weft thread that has been inserted, and therefore is positioned closest to the counter-feeding side. Multiple sub-nozzle groups including only the sub-nozzle group to be processed or the sub-nozzle group on the most counter-feeding side, and a smaller number of sub-nozzle groups (for example, three sub-nozzle groups on the counter-feeding side) The sub-nozzles 22 included in each group as the adjustment unit may be set as one adjustment unit in the sub-nozzle group unit. Further, only the sub-nozzle group positioned closest to the yarn supplying side, or a plurality of sub-nozzle groups including the sub-nozzle group positioned closest to the yarn supplying side, and only the sub-nozzles 22 included in a smaller number of sub-nozzle groups than all the sub-nozzle groups are included. The adjustment target may be an adjustment target, and only the sub nozzles 22 included in one or more sub nozzle groups located in the middle in the weaving width direction may be the adjustment target.

In the embodiment, in the air jet loom in which the sub nozzle group is composed of a plurality of sub nozzles 22, one adjustment unit is composed of all the sub nozzles 22 included in one sub nozzle group. However, the present invention is not limited to this, and the number of sub-nozzles 22 smaller than the total number of sub-nozzles 22 constituting one sub-nozzle group may be one adjustment unit.
For example, in the case where there are four sub-nozzles 22 constituting one sub-nozzle group, a plurality of sub-nozzles 22 of three or less may be used as one adjustment unit, and the sub-nozzle group is constituted by a plurality of sub-nozzles 22. However, only one sub nozzle 22 may be used as one adjustment unit.

  Further, in the above embodiment, when a plurality of sub-nozzle groups are set as adjustment targets, the number of sub-nozzles 22 constituting one adjustment unit in each sub-nozzle group to be adjusted is the same (four). However, the present invention is not limited to this, and the number of sub-nozzles 22 constituting one adjustment unit may be different from other sub-nozzle groups for some sub-nozzle groups.

In the above embodiment, only one adjustment unit exists in one sub-nozzle group. However, the present invention is not limited to this, and one adjustment unit is included in a sub-nozzle group composed of a plurality of sub-nozzles 22. There may be two or more.
For example, in a sub-nozzle group composed of four sub-nozzles 22, there are two one-adjustment units in such a manner that two yarn-feeding sides and two counter-feeding-side yarns each have one adjustment unit. May be.

  Moreover, in the said Example, DD motor 51 which is provided for every sub nozzle 22 and drives the sub nozzle 22 directly as a structure of the drive device which changes the injection angle position of the sub nozzle 22 is used. However, the drive device in the adjusting device according to the present invention is not limited to this, and uses a drive transmission mechanism and other actuators (drive motor, rotary solenoid, etc.) 74 connected to the sub nozzle 22 via the drive transmission mechanism, The sub nozzle 22 may be driven indirectly. The drive transmission mechanism in this case includes a rotation gear, a worm gear / worm wheel, a rack / pinion, a belt, a chain, and the like, and specific examples are shown in FIGS.

  FIG. 5 (a) shows a drive transmission mechanism 71a using a rack and pinion and an AC motor 74 as an actuator. This is because the pinion 72 is concentrically fixed to the base end side of the sub nozzle 22, and the pinion 75 concentrically fixed to the output shaft of the AC motor 74 is meshed with the rack 73 meshed with the pinion 72. Is. Then, by driving the AC motor 74, the sub nozzle 22 rotates by an amount corresponding to the rotation amount of the output shaft of the AC motor 74, and the ejection angle position of the sub nozzle 22 is adjusted.

  FIG. 5B shows a drive transmission mechanism 71b using a worm gear / worm wheel and an AC motor 74. In this configuration, a worm wheel 76 is concentrically fixed to the proximal end side of the sub nozzle 22, and a worm gear 77 fixed concentrically to the output shaft of the AC motor 74 is meshed with the worm wheel 76. Then, by driving the AC motor 74, the sub nozzle 22 rotates by an amount corresponding to the rotation amount of the output shaft of the AC motor 74, and the ejection angle position of the sub nozzle 22 is adjusted.

  FIG. 5C also shows a drive transmission mechanism 71c using a worm gear / worm wheel and an AC motor 74. This is the same configuration as the example shown in FIG. 5B, but instead of the worm wheel 76, it is fixed concentrically to the output shaft of the AC motor 74 on the outer peripheral surface of the base end side of the sub nozzle 22. An annular tooth groove 78 meshing with the worm gear 77 is formed.

  In the above embodiment, one actuator (AC motor) 74 is provided for one sub nozzle 22. However, the present invention is not limited to this. In the case where a plurality of sub nozzles 22 are included in one adjustment unit. A configuration in which a plurality of sub nozzles 22 smaller than all the sub nozzles 22 in one adjustment unit, or all the sub nozzles 22 in one adjustment unit are driven by a single actuator 74 via a drive transmission mechanism. good.

  FIG. 6 shows an example of such a configuration. In the illustrated example, the drive device drives the two sub-nozzles 22 and 22 by a single actuator 74, and includes a drive transmission mechanism 71d using a rack and pinion and an AC motor 74. Has become. Specifically, a pinion 72 is concentrically fixed to the base end side of each of the sub-nozzles 22 and 22, and a rack 73 meshed with these two pinions 72 and 72 is concentric with the output shaft of the AC motor 74. The pinion 75 fixed to the mesh is engaged. Then, by driving the AC motor 74, the two sub-nozzles 22 and 22 are simultaneously rotated by the same angular amount, and the ejection angle positions of the two sub-nozzles 22 and 22 are adjusted.

  Moreover, in the said Example, although adjustment (change) of the injection angle position of the sub nozzle 22 was performed with the change of the weaving state during weaving (during continuous operation of the loom), the adjustment according to the present invention described above is performed. The adjustment method of the injection angle position of the sub nozzle 22 using the apparatus is not limited to this, and when the adjustment (setting) of the injection angle position of the sub nozzle 22 is performed in the weaving preparation stage before weaving start or in the loom stop state during weaving. Is also applicable. In this case, for example, the injection angle position of the sub nozzle 22 may be automatically set based on the weaving conditions set by the operator in the weaving preparation stage. Further, when the setting of the weaving condition is changed by the operator while the loom is in the middle of weaving, the injection angle position of the sub nozzle 22 may be automatically changed accordingly.

  The present invention is not limited to the air jet loom that wefts the two types of wefts described in the above embodiment, and can be applied to an air jet loom that wefts one type or three or more types of wefts.

A feed body B feed body a weft b weft S1 weft selection signal

11 Weft insertion device 12 Yarn feeder stand 13 Length measuring storage device 14 Yarn winding arm 15 Drum 16 Locking pin 17 Operator 21 Main nozzle 22 Sub nozzle 22a Air injection port 22b Stepped portion 23 Stretch nozzle 24 Nozzle holder 25 Lead holder 26 Bearing 31 Weft feeler 32 Pressure air source 33 Pressure regulator 34 Electromagnetic on / off valve 35 Pressure regulator 36 Electromagnetic on / off valve 37 Electromagnetic on / off valve 41 Main shaft 42 Encoder 43 Weft insertion control unit 44 Weft insertion control unit 45 Weft selection signal generation unit 46 Input・ Setting display device 51DD motor (actuator)
51a stator 51b rotor 61a sub nozzle control device (control device)
61b sub-nozzle control device (control device)
61c sub-nozzle control device (control device)
62 drive controller 63 setter 64 discriminator 65 comparator 71a drive transmission mechanism 71b drive transmission mechanism 71c drive transmission mechanism 71d drive transmission mechanism 72 pinion 73 rack 74 AC motor (actuator)
75 pinion 76 worm wheel 77 worm gear 78 tooth groove

Claims (14)

A plurality of sub-nozzles arranged along a weft insertion path, and a plurality of electromagnetic on-off valves provided for supplying compressed air to the sub-nozzles, each of which is connected to one or more sub-nozzles In the air-injecting loom that wefts are inserted by the sub-nozzles performing air injection for each electromagnetic on-off valve,
At least one of the plurality of electromagnetic on-off valves is driven by at least one actuator using at least one of the one or more sub-nozzles connected to the electromagnetic on-off valve as an adjustment unit,
A method for adjusting a sub-nozzle injection angle position in an air-jet loom, wherein the sub-nozzle injection angle position included in the one adjustment unit is adjusted by the same angle amount.   2. The method according to claim 1, wherein the one adjustment unit includes a plurality of sub nozzles connected to one electromagnetic on-off valve. A database including the injection angle position corresponding to each of a plurality of weaving conditions that can be set for weaving with the air jet loom is set in advance,
3. The sub nozzle according to claim 1, wherein the injection angle position corresponding to a set weaving condition is selected from the database and the actuator is driven based on the selected injection angle position. 4. Adjustment method of injection angle position. The air jet loom is a loom that changes the weaving conditions during weaving,
Along with switching of the weaving conditions during weaving, the injection angle position corresponding to the weaving conditions after switching is selected from the database, and the actuator is driven based on the selected injection angle position. The method for adjusting the injection angle position of the sub nozzle according to claim 3. The air jet loom is a loom having a multi-color weft insertion device that selectively wefts two or more wefts having different yarn types in accordance with a weft selection pattern set as the weaving condition,
In the database, the injection angle position corresponding to each weft thread inserted is set,
The method according to claim 4, wherein the actuator is driven based on the injection angle position corresponding to the weft after switching as the weft is switched during weaving.   The injection angle position after the change of the injection angle position is detected, and the detected value is compared with the injection angle position selected according to the weaving condition. 6. The method according to claim 4 or 5, wherein the actuator is driven so as to eliminate the sub-nozzle. The air jet loom comprises a passage detection sensor for detecting the passage of the tip of a weft thread to be inserted,
A reference value related to the rotation angle of the loom main shaft at the time when the tip of the weft passes through the position of the passage detection sensor is set in advance,
The reference value is compared with the rotation angle when the weft is actually detected, and when a deviation occurs between the two, the actuator is driven in a direction to eliminate the deviation. The adjustment method of the injection angle position of the sub nozzle as described in 1, 2 or 3. A plurality of sub-nozzles arranged along a weft insertion path, and a plurality of electromagnetic on-off valves provided for supplying compressed air to the sub-nozzles, each of which is connected to one or more sub-nozzles A sub-nozzle injection angle position adjusting device in an air-injecting loom for inserting a weft into each electromagnetic on-off valve.
With respect to at least one of the plurality of electromagnetic on-off valves, injection of sub-nozzles included in the one adjustment unit with at least one of the one or more sub-nozzles connected to the electromagnetic on-off valve as one adjustment unit Including a drive for adjusting the angular position;
The drive device drives the actuator so that the at least one actuator connected to the sub nozzle included in the one adjustment unit and the injection angle position of the sub nozzle included in the one adjustment unit are adjusted by the same angular amount. And a control device for controlling the sub-nozzle jet angle position adjusting device in the air jet loom.   9. The air injection type according to claim 8, wherein the drive device has a drive transmission mechanism connected to a plurality of sub nozzles connected to one electromagnetic on-off valve set as the one adjustment unit. A device for adjusting the injection angle position of a sub nozzle in a loom.   The control device sets a database including the injection angle position corresponding to each of a plurality of weaving conditions that can be set in the loom for weaving, and the controller corresponding to the weaving conditions set from the database 10. A sub-nozzle in an air-jet loom according to claim 8, further comprising a drive controller that selects an injection angle position and controls driving of an actuator based on the selected injection angle position. Adjusting device for injection angle position. The air jet loom is a loom that changes the weaving conditions during weaving,
11. The air according to claim 10, wherein the drive controller selects an injection angle position corresponding to the weaving condition after switching from the database of the setting device according to switching of the weaving condition during weaving. The adjustment apparatus of the injection angle position of the sub nozzle in an injection type loom. The air jet loom is a loom having a multi-color weft insertion device that selectively wefts two or more wefts having different yarn types in accordance with a weft selection pattern set as the weaving condition,
In the setting device, a database including the injection angle position corresponding to each of the wefts to be wefted as the weaving condition is set,
The air injection according to claim 11, wherein the drive controller selects the injection angle position corresponding to the weft after switching from the database of the setting device as the weft is switched during weaving. Device for adjusting the injection angle position of the sub nozzle in the loom. An angular position detection sensor for detecting the injection angular position;
A discriminator for comparing the detection value of the angular position detection sensor after the control device changes the injection angle position and the injection angle position selected according to the weaving condition;
When there is a deviation between the injection angle position selected as the comparison result by the discriminator and the detection value of the angular position detection sensor, the drive controller is configured to cancel the deviation. The apparatus for adjusting the injection angle position of the sub-nozzle in the air jet loom according to claim 11 or 12. The air jet loom comprises a passage detection sensor for detecting the passage of the tip of a weft thread to be inserted,
The control device includes a setter for setting a reference value related to the rotation angle of the loom main shaft at the time when the tip of the weft passes through the position of the passage detection sensor, and the rotation when the reference value and the weft are actually detected. A comparator for comparing the angle, and a drive controller for controlling the driving of the actuator in a direction to eliminate the deviation when a deviation occurs as a comparison result by the comparator. The adjustment apparatus of the injection angle position of the sub nozzle in the air injection type loom of Claim 8, 9 or 10.

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