阅读说明：本技术 喷气织机的副喷嘴喷射方向调整装置 (Jet direction regulator for auxiliary nozzle of air jet loom ) 是由 滨口真崇 谷内宏史 于 2021-05-10 设计创作，主要内容包括：本发明涉及喷气织机的副喷嘴喷射方向调整装置。更高效地进行副喷嘴的喷射方向的调整。喷气织机的副喷嘴喷射方向调整装置(40)具备压力传感器(43)、计算部(51)、以及显示部(52)。压力传感器(43)在由3个以上的测定点构成的测定点组对来自副喷嘴(15)的空气喷射的风压进行测定。计算部(51)基于测定点组处的压力传感器(43)的测定值,对来自副喷嘴(15)的空气喷射的风压成为最大的最大风压位置进行计算。显示部(52)显示最大风压位置以及最大风压位置的目标位置,并且显示由使副喷嘴(15)沿以副喷嘴(15)的延伸的轴线为中心的周向(S12)旋转而产生的最大风压位置的移动轨迹以及目标位置的移动轨迹。(The invention relates to a device for adjusting the injection direction of a secondary nozzle of an air jet loom. The injection direction of the sub-nozzle is more efficiently adjusted. A sub-nozzle jet direction adjustment device (40) of an air jet loom is provided with a pressure sensor (43), a calculation unit (51), and a display unit (52). The pressure sensor (43) measures the wind pressure of the air jet from the sub-nozzle (15) at a measurement point group consisting of 3 or more measurement points. A calculation unit (51) calculates a maximum wind pressure position at which the wind pressure of the air jet from the sub-nozzle (15) is maximum, based on the measurement values of the pressure sensors (43) at the measurement point group. The display unit (52) displays the maximum wind pressure position and the target position of the maximum wind pressure position, and also displays the movement locus of the maximum wind pressure position and the movement locus of the target position, which are generated by rotating the sub-nozzle (15) in the circumferential direction (S12) around the axis of extension of the sub-nozzle (15).)

1. A device for adjusting the injection direction of a sub-nozzle of an air jet loom is provided with:

a main nozzle for picking;

a sub-nozzle for picking;

a reed having a plurality of reed teeth arranged in a picking direction; and

a reed passage formed by a plurality of guide recesses of the reed dent,

the device for adjusting the injection direction of the sub-nozzle of the air jet loom, which picks up a weft yarn through the reed passage by injecting air from the main nozzle and the sub-nozzle, is characterized by comprising:

a pressure sensor that measures a wind pressure of the air jet from the sub-nozzle at a measurement point group consisting of 3 or more measurement points;

a calculation unit that calculates a maximum wind pressure position including a position on a plane of the measurement point group and at which a wind pressure of the air jet from the sub-nozzle is maximum, based on measurement values of the pressure sensors at the measurement point group; and

and a display unit that displays the maximum wind pressure position and a target position of the maximum wind pressure position, and displays at least one of a movement trajectory of the maximum wind pressure position and a movement trajectory of the target position, which is generated by rotating the sub-nozzle in a circumferential direction around an axis of extension of the sub-nozzle, on a plane including the measurement point group.

2. The sub-nozzle jet direction adjusting device of an air jet loom according to claim 1,

the display unit displays the adjustment amount of the distance between the measurement point group and the sub-nozzle as a trajectory deviation between the movement trajectory of the maximum wind pressure position and the movement trajectory of the target position.

3. The sub-nozzle jet direction adjusting device of an air jet loom according to claim 1 or 2,

the display unit displays a rotation adjustment amount of the sub-nozzle in the circumferential direction as a positional deviation between the maximum wind pressure position and the target position.

4. The device for adjusting the jet direction of a sub-nozzle of an air jet loom according to any one of claims 1 to 3,

the pressure sensor measures the wind pressure of the air injected from the sub-nozzle at a preliminary measurement point group consisting of 3 or more measurement points located outside the measurement point group,

the display unit displays that preliminary adjustment of the distance of the measurement point group from the sub-nozzle is required, based on the measurement values of the pressure sensors at the preliminary measurement point group.

Technical Field

The invention relates to a device for adjusting the injection direction of a secondary nozzle of an air jet loom.

Background

In an air jet loom, a weft yarn is ejected by air from a main nozzle and an auxiliary nozzle, and the weft yarn is guided in a reed passage. For example, patent document 1 discloses a sub-nozzle ejection direction adjustment device that adjusts the direction of air ejected from a sub-nozzle. In the device for adjusting the injection direction of the sub-nozzle, a plurality of pitot tubes are arranged along the wall surface of the reed, and the highest wind pressure value generated by the air injection from the sub-nozzle is measured while moving the pitot tubes in the picking direction. Then, the worker adjusts the rotation angle and height of the sub-nozzle while observing the digital display and the bar display, thereby adjusting the position of the highest wind pressure value measurement to a desired position.

Patent document 1: japanese laid-open patent publication No. H09-176937

In the sub-nozzle spray direction adjusting device described in patent document 1, it is necessary to search for adjusting the spray direction of the sub-nozzle by moving the rotation angle and height of the sub-nozzle. Therefore, it is desired to more efficiently adjust the ejection direction of the sub-nozzle.

Disclosure of Invention

The present invention has been made to solve the above-described problems, and an object thereof is to provide a sub-nozzle injection direction adjusting device for an air jet loom, which can more efficiently adjust the injection direction of a sub-nozzle.

The device for adjusting the injection direction of the sub-nozzle of the air jet loom, which solves the above problems, comprises: a main nozzle for picking; a sub-nozzle for picking; a reed having a plurality of reed teeth arranged in a picking direction; and a reed passage formed by a plurality of guide recesses of the reed dent, and adapted to pick up a weft yarn through the reed passage by air injection from the main nozzle and the sub-nozzle, wherein the sub-nozzle injection direction adjusting device of the air jet loom includes: a pressure sensor for measuring a wind pressure of the air jet from the sub-nozzle at a measurement point group consisting of 3 or more measurement points; a calculation unit that calculates a maximum wind pressure position including a position on a plane of the measurement point group and at which a wind pressure of the air jet from the sub-nozzle is maximum, based on measurement values of the pressure sensors at the measurement point group; and a display unit that displays the maximum wind pressure position and a target position of the maximum wind pressure position, and displays at least one of a movement trajectory of the maximum wind pressure position and a movement trajectory of the target position, which are generated by rotating the sub-nozzle in a circumferential direction around an axis of extension of the sub-nozzle, on a plane including the measurement point group.

According to the above configuration, when the movement locus of the maximum wind pressure position is displayed on the display unit, the worker adjusts the position of the measurement point group with respect to the sub-nozzle until the movement locus of the maximum wind pressure position displayed on the display unit includes the target position. When the movement trajectory of the target position is displayed on the display unit, the worker adjusts the position of the measurement point group with respect to the sub-nozzle until the maximum wind pressure position displayed on the display unit is located on the movement trajectory of the target position. When both the movement trajectory of the maximum wind pressure position and the movement trajectory of the target position are displayed on the display unit, the worker adjusts the positions of the measurement point groups with respect to the sub-nozzles until the movement trajectory of the maximum wind pressure position displayed on the display unit matches the movement trajectory of the target position. In this way, in a state where the position of the measurement point group with respect to the sub-nozzle is adjusted, the worker adjusts the rotation of the sub-nozzle in the circumferential direction until the maximum wind pressure position matches the target position, and can adjust the maximum wind pressure position to the target position. Thus, the injection direction of the sub-nozzle can be adjusted without adjusting the sub-nozzle in the axial direction. Therefore, the injection direction of the sub-nozzle can be more efficiently adjusted.

In the sub-nozzle injection direction adjusting device of the air jet loom, it is preferable that the display unit displays the adjustment amount of the distance between the measurement point group and the sub-nozzle as a trajectory deviation between a movement trajectory of the maximum wind pressure position and a movement trajectory of the target position.

According to the above configuration, the worker can adjust the position of the measurement point group by the distance adjustment amount displayed on the display unit, and can set the target position of the maximum wind pressure position on the movement locus of the maximum wind pressure position. Therefore, the injection direction of the sub-nozzle can be more efficiently adjusted than in the case where the operator adjusts the position of the measurement point group while viewing the display unit.

In the sub-nozzle injection direction adjusting device of the air jet loom, it is preferable that the display unit displays the rotation adjustment amount of the sub-nozzle in the circumferential direction as a positional deviation between the maximum wind pressure position and the target position.

According to the above configuration, the worker can adjust the rotation adjustment amount displayed on the display unit by rotating the sub-nozzle in the circumferential direction, thereby making the maximum wind pressure position coincide with the target position. Therefore, the injection direction of the sub-nozzle can be adjusted more efficiently than in the case where the worker adjusts the sub-nozzle by rotating in the circumferential direction while viewing the display unit.

In the sub-nozzle injection direction adjusting device of the air jet loom, it is preferable that the pressure sensor measures the wind pressure of the air injected from the sub-nozzle at a preliminary measurement point group consisting of 3 or more measurement points located outside the measurement point group, and the display unit displays that preliminary adjustment of the distance of the measurement point group from the sub-nozzle is required based on the measurement values of the pressure sensor at the preliminary measurement point group.

According to the above configuration, the worker adjusts the position of the measurement point group in accordance with the display that requires preliminary adjustment on the display unit, and can adjust the injection direction of the sub-nozzle in a state where the maximum wind pressure position of the sub-nozzle is located at the position surrounded by the measurement point group. Therefore, the injection direction of the sub-nozzle can be adjusted more efficiently than in the case where the worker adjusts the positions of the measurement point groups in a pseudo manner when adjusting the injection direction of the sub-nozzle.

According to the present invention, the injection direction of the sub-nozzle can be more efficiently adjusted.

Drawings

Fig. 1 is a schematic view showing a picking device of an air jet loom.

Fig. 2 is a schematic perspective view partially showing a picking device of an air jet loom.

Fig. 3 is a schematic side view showing a picking device of an air jet loom.

Fig. 4 is a schematic perspective view showing the sub-nozzle and the sub-nozzle ejection direction adjustment device.

Fig. 5 is a front view showing the pressure measuring apparatus.

Fig. 6 is a schematic diagram showing an enlarged display image displayed on the display unit.

Fig. 7 is a schematic diagram showing the display unit.

Fig. 8 is a schematic diagram showing the display unit.

Fig. 9 is a flowchart showing a processing procedure of the sub-nozzle ejection direction adjustment processing.

Description of reference numerals:

the L … distance; p1 … set of assay points; p2 … set of preliminary measurement points; pc … maximum wind pressure position; pt … target position; tp … movement trajectory; tt … target movement trajectory; y … weft yarn; 14 … reed; 14a … reed passage; 14b … guide recess; 14c … dents; 15 … secondary nozzle; 22 … primary nozzle; 40 … auxiliary nozzle jet direction adjusting device; 43 … pressure sensor; 51 … calculation part; 52 … display section.

Detailed Description

Hereinafter, an embodiment embodying the sub-nozzle injection direction adjusting device of the air jet loom will be described with reference to fig. 1 to 9. In the following description, with respect to the picking direction in which a weft yarn is picked into a warp shedding and conveyed, the side opposite to the picking direction is set as the upstream side, and the picking direction side is set as the downstream side. For convenience of explanation, the sub-nozzle ejection direction adjusting device will be described after the description of the picking device.

As shown in fig. 1, the picking device 10 includes a picking nozzle 11, a yarn feeder 12, a weft length measuring and storing device 13, a reed 14, a plurality of picking sub-nozzles 15, and a controller 16. The control device 16 is provided with a display device 16a having a display function and an input function. The yarn feeder 12 is disposed upstream of the picking nozzle 11. The weft yarn Y in the yarn supplying portion 12 is drawn out by rotation of a winding arm, not shown, of the weft length measuring and storing device 13, and is stored in a state of being wound around the storage tube 17.

The weft measuring length storage device 13 is provided with a weft yarn locking pin 18 and a balloon sensor 19 for detecting unwinding of the weft yarn Y from the weft measuring length storage device 13. The weft yarn locking pin 18 and the balloon sensor 19 are disposed around the storage cylinder 17. The weft yarn catching pin 18 is electrically connected to the control device 16. The weft yarn locking pin 18 unwinds the weft yarn Y stored in the storage tube 17 at a loom rotation angle preset by the control device 16. The moment when the weft yarn Y is unwound by the weft yarn locking pin 18 is the picking start moment.

The balloon sensor 19 is electrically connected to the control device 16. The balloon sensor 19 detects the weft yarn Y unwound from the storage tube 17 in the picking, and sends a weft unwinding signal to the control device 16. Upon receiving the weft unwinding signal a predetermined number of times (4 times in the present embodiment), the control device 16 activates the weft yarn locking pin 18. The weft yarn locking pin 18 locks the weft yarn Y unwound from the storage tube 17, and stops the picking.

In addition, the operating time for the weft yarn locking pin 18 to lock the weft yarn Y is set according to the number of windings required to store the weft yarn Y having a length corresponding to the weaving width TL in the storage tube 17. In the present embodiment, the control device 16 is set to: when the weft unwinding signal of the balloon sensor 19 is received 4 times, an operation signal for locking the weft Y is transmitted to the weft locking pin 18. Therefore, in the picking device 10 of the present embodiment, the weft yarn Y corresponding to the weft yarn reserve length of 4 rounds of the reserve tube 17 is picked.

The weft detection signal of the balloon sensor 19 is an unwinding signal of the weft Y from the storage tube 17, and the control device 16 recognizes this as a weft unwinding timing based on the loom rotation angle signal obtained from the encoder 20.

The picking nozzle 11 includes a serial nozzle 21 for drawing out the weft yarn Y in the storage tube 17, and a main nozzle 22 for picking the weft yarn Y to the reed passage 14a of the reed 14. In the air jet loom, the weft yarn Y is inserted through the reed passage 14a by air injection from the main nozzle 22 and the sub-nozzle 15. A brake 23 for braking the weft Y before the completion of picking is provided upstream of the tandem nozzle 21.

Main nozzle 22 is connected to main valve 22v via pipe 22 a. Main valve 22v is connected to main air tank 26 via pipe 22 b. The tandem nozzle 21 is connected to a tandem valve 21v via a pipe 21 a. The series valve 21v is connected to a main air tank 26 shared with the main valve 22v via a pipe 21 b.

The main air tank 26 is connected to a common air compressor 31 provided in a textile factory via a main pressure gauge 27, a main regulator 28, a raw pressure gauge 29, and a filter 30. The main air tank 26 stores compressed air supplied from an air compressor 31 and adjusted to a set pressure by a main regulator 28. The pressure of the compressed air supplied to the main air tank 26 is always detected by the main pressure gauge 27.

As an example of 1, the plurality of sub-nozzles 15 are divided into 6 groups, and each group is composed of 4 sub-nozzles 15. The 6 sub-valves 32 are provided corresponding to the respective groups, and the sub-nozzles 15 of the respective groups are connected to the respective sub-valves 32 via pipes 33. Each sub-valve 32 is connected to a common sub-air tank 34.

The sub air tank 34 is connected to a sub regulator 36 via a sub pressure gauge 35. The sub-regulator 36 is connected to a pipe 28a connecting the main pressure gauge 27 and the main regulator 28 via a pipe 36 a. The sub-air tank 34 stores compressed air supplied from the air compressor 31 and adjusted to a set pressure by the sub-regulator 36. The pressure of the compressed air supplied to the sub-air tank 34 is always detected by the sub-pressure gauge 35.

The main valve 22v, the series valve 21v, the sub valve 32, the original pressure gauge 29, the main pressure gauge 27, the sub pressure gauge 35, and the brake 23 are electrically connected to the control device 16. The control device 16 is preset with an operation timing and an operation period for operating the main valve 22v, the series valve 21v, the sub-valve 32, and the brake 23. The control device 16 receives detection signals from the original pressure gauge 29, the main pressure gauge 27, and the sub pressure gauge 35.

At a timing earlier than the picking start timing at which the weft engagement pin 18 is operated, an operation command signal is output from the control device 16 to the main valve 22v and the tandem valve 21v, and compressed air is injected from the main nozzle 22 and the tandem nozzle 21. An operation command signal is output from the control device 16 to the brake 23 at a timing earlier than the arrival timing of the leading end of the weft yarn, which is engaged with the weft yarn Y in the storage tube 17 by the operation of the weft yarn engaging pin 18. The brake 23 reduces the speed of the weft Y by braking the weft Y traveling at a high speed, and alleviates the impact of the weft Y at the time when the leading end of the weft reaches.

Various textile conditions and weaving conditions are registered and stored in the control device 16. The textile conditions include, for example, the weft type such as the material and the count of the yarn used for the weft Y, the weft density, the warp type such as the material and the count of the yarn used for the warp, the warp density, the weave width, and the textile weave. The weaving conditions include, for example, the rotational speed of the loom, the pressure of the compressed air in the main air tank 26 and the sub air tank 34, the opening degrees of the main valve 22v and the series valve 21v, the picking start time, the target weft yarn leading end arrival time, and the like.

Although not shown in the drawings, the tandem nozzle 21, the brake 23, the weft length measuring and storing device 13, and the yarn feeding portion 12 are fixed to a bracket or the like attached to a frame or a floor surface of the air jet loom.

As shown in fig. 2, the main nozzle 22, the sub-nozzle 15, and the reed 14 are arranged on a sley 24 and reciprocally swing in the front-rear direction of the air jet loom. The reed 14 is configured such that a plurality of dents 14c having a guide recess 14b are arranged in the picking direction. The reed passage 14a is formed by the guide recesses 14b of the plurality of dents 14 c.

The plurality of sub-nozzles 15 are fixed to the slay 24 via support blocks 25, respectively. The sub-nozzle 15 can move in and out of the opening for the warp yarn T between the rows of the warp yarn T in accordance with the swing of the slay 24.

As shown in fig. 3, an ejection port 15a for ejecting air is formed at the tip of the sub-nozzle 15. The sub-nozzle 15 injects air from the injection port 15a toward the guide recess 14b of the reed dent 14c, thereby performing air injection into the reed passage 14 a.

The sub-nozzle 15 is adjusted in the air jetting direction by the worker every time the textile condition or the weaving condition set in the control device 16 is changed. The adjustment of the ejection direction of the sub-nozzle 15 is performed by moving the sub-nozzle 15 relative to the support block 25 along the axial direction in which the sub-nozzle 15 extends, and rotating the sub-nozzle 15 relative to the support block 25 in the circumferential direction around the axis of the sub-nozzle 15. Hereinafter, the axial direction of the sub-nozzle 15 is simply referred to as the axial direction S11. The circumferential direction around the axis of the sub-nozzle 15 is simply referred to as a circumferential direction S12.

As shown in fig. 4, when the ejection direction of the sub-nozzle 15 is adjusted, the adjusting dents 114c, the sub-nozzle 15, and the sub-nozzle ejection direction adjusting device 40 are provided on the slay 24. The adjusting dents 114c are provided at the installation position of the reed 14 on the slay 24. The adjusting dents 114c have the same shape as the dents 14c, and have adjusting guide recesses 114b having the same shape as the guide recesses 14b of the dents 14 c. The space defined by the adjustment guide recess 114b is referred to as an adjustment reed passage 114 a. The adjusting reed passage 114a is formed at the same position as the reed passage 14a formed by the guide recess 14b of the dent 14 c.

When the worker attaches the sub-nozzle 15 to the slay 24, the protrusion length of the sub-nozzle 15 from the support block 25 in the axial direction S11 is set to a predetermined protrusion length. The predetermined protrusion length is a value set according to the textile conditions and the weaving conditions. After the worker adjusts the sub-nozzle 15 in the axial direction S11, the sub-nozzle 15 is fixed to the support block 25 so as to have a protruding length corresponding to the textile condition or the weaving condition.

The injection direction of the sub-nozzle 15 is adjusted using the sub-nozzle injection direction adjusting device 40. The sub-nozzle ejection direction adjustment device 40 includes a pressure measurement device 41, a calculation unit 51, and a display unit 52. The pressure measuring device 41, the calculating unit 51, and the display unit 52 are electrically connected. The display unit 52 includes a 1 st screen 52a, a 2 nd screen 52b, and a 3 rd screen 52 c.

The pressure measuring device 41 measures the wind pressure of the air injected from the sub-nozzle 15. The pressure measuring device 41 is attached to the downstream side of the adjusting reed passage 114a by the worker. The pressure measuring device 41 includes a sensor base 42 that is attachable to and detachable from the sley 24, and a pressure sensor 43 attached to the sensor base 42. The sensor base portion 42 has a rectangular columnar base shaft portion 42a and a rectangular plate-like base main body portion 42b located at the 1 st end in the axial direction of the base shaft portion 42 a. The 2 nd end portion side of the base shaft portion 42a opposite to the base main body portion 42b in the axial direction is attached to the slay 24. The base body part 42b is positioned downstream of the adjusting dents 114c in the picking direction so as to be aligned with the adjusting dents 114 c.

The pressure sensor 43 is constituted by a plurality of pitot tubes 44 that measure the velocity of the flow of the fluid. The pressure sensor 43 of the present embodiment has 8 pitot tubes 44. Each pitot tube 44 extends from the base main body portion 42b in the picking direction toward the adjusting dents 114 c. The pressure sensor 43 can measure the wind pressure of the air jet from the sub-nozzle 15 at 8 measurement points by the respective pitot tubes 44.

As shown in fig. 5, each pitot tube 44 is positioned so as to overlap the inside of the adjustment guide recess 114b in the adjustment dent 114c, the edge of the adjustment dent 114c formed by the adjustment guide recess 114b, and the portion around the adjustment guide recess 114b when viewed from the upstream side in the picking direction. When viewed from the upstream side in the picking direction, the 4 pitot tubes 44 are positioned so as to form a square having a length of one side of the length 1 st length a. The 4 pitot tubes 44 are referred to as 1 st pitot tube 44 a. When viewed from the upstream side in the picking direction, 4 pitot tubes 44 other than the 1 st pitot tube 44a are positioned so as to form a square having a length of one side of the square having the 2 nd length B. The 4 pitot tubes 44 are referred to as pitot tube 2 b. The 2 nd length B is longer than the 1 st length a. When viewed from the upstream side in the picking direction, the 2 nd pitot tube 44b is positioned outside the 41 st pitot tubes 44 a.

As shown in fig. 6, the 1 st screen 52a of the display unit 52 displays the 4 measurement points at the 1 st pitot tube 44a as a measurement point group P1 composed of 4 measurement points, and displays the 4 measurement points at the 2 nd pitot tube 44b as a preliminary measurement point group P2 composed of 4 measurement points. As with the positional relationship between the 1 st pitot tube 44a and the 2 nd pitot tube 44b, the 4 measurement points of the preliminary measurement point group P2 are located outside the 4 measurement points of the measurement point group P1. The 1 st screen 52a displays an XY coordinate system having orthogonal X and Y axes, and the measurement points of the measurement point group P1 and the measurement points of the preliminary measurement point group P2 are displayed as coordinate points.

The 4 measurement points in measurement point group P1 displayed on screen 52a 1 are referred to as measurement point 1P 11, measurement point 2P 12, measurement point 3P 13, and measurement point 4P 14. The X-coordinate values of the 1 st measurement point P11 and the 2 nd measurement point P12 are the same. The Y coordinate values of the 2 nd measurement point P12 and the 3 rd measurement point P13 are the same. The X-coordinate values of the 3 rd measurement point P13 and the 4 th measurement point P14 are the same. The X-coordinate values of the 3 rd measurement point P13 and the 4 th measurement point P14 are larger than the X-coordinate values of the 1 st measurement point P11 and the 2 nd measurement point P12. The Y coordinate values of the 4 th measurement point P14 and the 1 st measurement point P11 are the same. The Y coordinate values of the 4 th measurement point P14 and the 1 st measurement point P11 are larger than the Y coordinate values of the 2 nd measurement point P12 and the 3 rd measurement point P13.

The 4 measurement points in the preliminary measurement point group P2 displayed on the 1 st screen 52a are referred to as a 1 st preliminary measurement point P21, a 2 nd preliminary measurement point P22, a 3 rd preliminary measurement point P23, and a 4 th preliminary measurement point P24. The X-coordinate values of the 1 st preliminary measurement point P21 and the 2 nd preliminary measurement point P22 are the same. The Y coordinate values of the 2 nd preliminary measurement point P22 and the 3 rd preliminary measurement point P23 are the same. The X-coordinate values of the 3 rd preliminary measurement point P23 and the 4 th preliminary measurement point P24 are the same. The X-coordinate values of the 3 rd and 4 th preliminary measurement points P23 and P24 are larger than the X-coordinate values of the 1 st and 2 nd preliminary measurement points P21 and P22. The Y coordinate values of the 4 th preliminary measurement point P24 and the 1 st preliminary measurement point P21 are the same. The Y coordinate values of the 4 th preliminary measurement point P24 and the 1 st preliminary measurement point P21 are larger than the Y coordinate values of the 2 nd preliminary measurement point P22 and the 3 rd preliminary measurement point P23.

The 1 st screen 52a displays the wind pressure distribution centered around the maximum wind pressure position Pc based on the measurement value measured by the 1 st pitot tube 44 a. The wind pressure distribution displayed on the 1 st screen 52a is illustrated by dotted hatching. Further, a display part of the wind pressure distribution of the 1 st screen 52a is enlarged in fig. 6. The maximum wind pressure position Pc is a position at which the wind pressure of the air jet from the sub-nozzle 15 becomes maximum. In the 1 st screen 52a, the wind pressure is indicated to be lower as the wind pressure distribution is located more outward than the maximum wind pressure position Pc so as to form a circle around the maximum wind pressure position Pc. Since the preliminary measurement point group P2 is located outside the measurement point group P1, when the maximum wind pressure position Pc is surrounded by the measurement point group P1, the wind pressure measured by the preliminary measurement point group P2 is lower than the wind pressure measured by the measurement point group P1.

As shown in fig. 4 and 6, the display unit 52 displays that preliminary adjustment of the distance L between the measurement point group P1 and the sub-nozzle 15 is necessary, based on the measurement values of the pressure sensors 43 at the preliminary measurement point group P2. Specifically, when the deviation of the measurement values between the measurement points in the preliminary measurement point group P2 is equal to or greater than a predetermined threshold value, the display unit 52 displays that preliminary adjustment is necessary and instructs the operator to perform the preliminary adjustment. When the variation in the measurement values between the measurement points in the preliminary measurement point group P2 is less than the threshold value, the threshold value is set to a value that can be estimated that the maximum wind pressure position Pc is located at a position surrounded by the measurement point group P1.

The calculation unit 51 calculates the position of the maximum wind pressure position Pc based on the measured value of the 1 st pitot tube 44 a. In other words, the calculation unit 51 calculates the maximum wind pressure position Pc based on the measurement values of the pressure sensors 43 at the measurement point group P1. The calculation unit 51 of the present embodiment calculates the maximum wind pressure position Pc based on the measurement values at the 1 st measurement point P11, the 2 nd measurement point P12, and the 3 rd measurement point P13. The maximum wind pressure position Pc is a position on a plane including the measurement point group P1.

When calculating the maximum wind pressure position Pc, the calculation unit 51 first calculates the difference between each of the measurement values at the 1 st measurement point P11 and the 2 nd measurement point P12 and an arbitrary constant set in advance as the 1 st representative value. Further, as an arbitrary constant, for example, the wind pressure at the maximum wind pressure position Pc preset by the operator is given. Then, the calculation unit 51 calculates a ratio of the 1 st representative value corresponding to the 1 st measurement point P11 to the 1 st representative value corresponding to the 2 nd measurement point P12.

Next, the calculation unit 51 calculates a difference between each of the measurement values at the 2 nd measurement point P12 and the 3 rd measurement point P13 and an arbitrary constant set in advance as a 2 nd representative value. Further, as an arbitrary constant, for example, the wind pressure at the maximum wind pressure position Pc preset by the operator is given. Then, the calculation unit 51 calculates a ratio of the 2 nd representative value corresponding to the 2 nd measurement point P12 to the 2 nd representative value corresponding to the 3 rd measurement point P13.

The calculation unit 51 calculates the maximum wind pressure position Pc based on the calculated ratio of the 1 st representative value and the ratio of the 2 nd representative value. Specifically, a line connecting points at which the ratio of the calculated 1 st representative values is equal to the ratio of the distances between the 1 st measurement point P11 and the 2 nd measurement point P12 is defined as the 1 st measurement line L1. A line connecting points at which the ratio of the calculated 2 nd representative value is equal to the ratio of the distance between the 2 nd measurement point P12 and the 3 rd measurement point P13 is defined as a 2 nd measurement line L2. Then, the calculation unit 51 calculates the intersection of the 1 st measurement line L1 and the 2 nd measurement line L2 as the maximum wind pressure position Pc. For convenience of explanation, the 1 st line L1 and the 2 nd line L2 are shown by broken lines in the 1 st screen 52a shown in fig. 6, but the 1 st line L1 and the 2 nd line L2 may not be displayed or may be displayed in the 1 st screen 52 a.

The calculation of the maximum wind pressure position Pc by the calculation unit 51 is based on the assumption that the maximum wind pressure position Pc is located at a position surrounded by the measurement point group P1. Therefore, when the maximum wind pressure position Pc is located at a position surrounded by the measurement point group P1, the calculation unit 51 calculates the maximum wind pressure position Pc, and the 1 st screen 52a displays the maximum wind pressure position Pc. On the other hand, when the maximum wind pressure position Pc is not located at the position surrounded by the measurement point group P1, the calculation of the maximum wind pressure position Pc is not performed by the calculation unit 51, and the maximum wind pressure position Pc is not displayed on the 1 st screen 52 a.

When the maximum wind pressure position Pc is not displayed on the 1 st screen 52a, the display unit 52 displays a preliminary adjustment instruction. The worker receives the display, moves the pressure measuring device 41 in the picking direction, and adjusts the distance L of the measuring point group P1 with respect to the sub-nozzle 15. Thus, when the maximum wind pressure position Pc is located at the position surrounded by the measurement point group P1, the calculation unit 51 calculates the maximum wind pressure position Pc, and the maximum wind pressure position Pc is displayed on the 1 st screen 52 a.

The calculation unit 51 calculates a movement locus Tp of the maximum wind pressure position Pc generated by rotating the sub-nozzle 15 in the circumferential direction S12 based on the calculated maximum wind pressure position Pc. The display unit 52 displays the movement locus Tp calculated by the calculation unit 51 on the 1 st screen 52 a. The movement locus Tp is a locus on a plane including the measurement point group P1. In addition, the movement locus Tp is a straight line including the calculated maximum wind pressure position Pc and showing a linear function having a slope set based on the set textile condition and weaving condition. The movement locus Tp shown in the 1 st frame 52a is displaced in the Y-axis direction with the same slope according to the distance L between the measurement point group P1 and the sub-nozzle 15 under the same textile condition and the same weaving condition.

Further, the 1 st screen 52a displays the target position Pt of the maximum wind pressure position Pc of the sub-nozzle 15 and the movement locus of the target position Pt. The movement locus of the target position Pt is set as a target movement locus Tt. The target position Pt is a maximum wind pressure position Pc that is set in advance based on textile conditions and weaving conditions. The target movement trajectory Tt is a straight line including the target position Pt and showing a linear function having a slope set in advance based on the set textile condition and weaving condition. The target position Pt and the target movement trajectory Tt are located on a plane including the measurement point group P1. Fig. 6 shows a display image of the 1 st screen 52a in the case where the maximum wind pressure position Pc coincides with the target position Pt. In this case, the movement locus Tp also coincides with the target movement locus Tt.

As shown in fig. 7, the display unit 52 displays the trajectory deviation between the movement trajectory Tp and the target movement trajectory Tt. Specifically, the display unit 52 displays the distance adjustment amount Lb, which is the adjustment amount of the distance L in the picking direction of the measurement point group P1 with respect to the sub nozzle 15, as the trajectory deviation on the 2 nd screen 52 b. The distance adjustment amount Lb is a value at which the movement locus Tp coincides with the target movement locus Tt when the distance L is adjusted by the distance adjustment amount Lb, and a value corresponding to the movement locus Tp is set for each set textile condition and weaving condition.

Fig. 7 shows a display image of the display unit 52 in a case where the movement locus Tp is offset from the target movement locus Tt. The 1 st frame 52a shows that the movement locus Tp is shifted in the Y-axis direction with the same slope as the target movement locus Tt. On the 1 st screen 52a, the maximum wind pressure position Pc is displayed on the movement locus Tp, and the target position Pt is displayed on the target movement locus Tt. Therefore, the maximum wind pressure position Pc and the target position Pt are displayed in a shifted manner on the 1 st screen 52 a.

The X-coordinate value is the same 3 rd coordinate value X3, the Y-coordinate value on the movement locus Tp is the 1 st coordinate value Y1, and the Y-coordinate value on the target movement locus Tt is the 2 nd coordinate value Y2. The display unit 52 displays the distance adjustment Lb on the 2 nd screen 52b based on the 1 st deviation Δ Y, which is the difference between the 1 st coordinate value Y1 and the 2 nd coordinate value Y2. That is, the display unit 52 displays the distance adjustment amount Lb on the 2 nd screen 52b based on the shift amount in the Y axis direction between the movement trajectory Tp and the target movement trajectory Tt. The worker can adjust the distance L of the measurement point group P1 with respect to the sub nozzle 15 by the distance adjustment amount Lb by moving the pressure measurement device 41 in the picking direction by the distance adjustment amount Lb displayed on the 2 nd screen 52 b.

As shown in fig. 8, when the adjustment of the distance L by the worker is completed by the distance adjustment amount Lb, the movement locus Tp matches the target movement locus Tt. On the 1 st screen 52a, a movement locus Tp and a target movement locus Tt which match each other are displayed.

The display unit 52 displays the positional deviation between the maximum wind pressure position Pc and the target position Pt calculated by the calculation unit 51. Specifically, the display unit 52 displays the rotation adjustment amount Lc of the sub-nozzle 15 in the circumferential direction S12 on the 3 rd screen 52c as the positional deviation. When the rotation adjustment amount Lc is adjusted in the circumferential direction S12 by the sub-nozzle 15 in a state where the movement locus Tp coincides with the target movement locus Tt, the rotation adjustment amount Lc is a value at which the maximum wind pressure position Pc coincides with the target position Pt. The rotation adjustment amount Lc is set to a value corresponding to the maximum wind pressure position Pc according to each set textile condition and weaving condition.

Fig. 8 shows a display image of the display unit 52 in a case where the movement locus Tp coincides with the target movement locus Tt and the maximum wind pressure position Pc is shifted from the target position Pt. The X-coordinate value of the target position Pt is set to the 4 th coordinate value X1, and the X-coordinate value of the maximum wind pressure position Pc is set to the 5 th coordinate value X2. The display unit 52 displays the rotation adjustment amount Lc on the 3 rd screen 52c based on the 2 nd deviation Δ X, which is the difference between the 4 th coordinate value X1 and the 5 th coordinate value X2. That is, the display unit 52 displays the rotation adjustment amount Lc on the 3 rd screen 52c based on the offset amount in the X axis direction between the maximum wind pressure position Pc and the target position Pt. The operator adjusts the rotation adjustment amount Lc displayed on the 3 rd screen 52c by rotating the sub-nozzle 15 in the circumferential direction S12 so that the movement locus Tp is kept consistent with the target movement locus Tt and the maximum wind pressure position Pc is shifted in the X-axis direction to coincide with the target position Pt.

Next, the ejection direction adjustment processing of the sub-nozzles 15 by the sub-nozzle ejection direction adjustment device 40 will be described together with the operation of the present embodiment. Further, the ejection direction adjustment processing of the sub-nozzles 15 is performed for each sub-nozzle 15 provided in the slay 24. That is, each time the adjustment of the ejection direction is completed with respect to 1 sub-nozzle 15, the worker adjusts the ejection direction of the sub-nozzle 15 while sequentially moving the adjusting dents 114c and the pressure measuring device 41 to the position corresponding to the next sub-nozzle 15.

When adjusting the ejection direction of the sub-nozzle 15, first, the sub-nozzle 15, the adjusting dents 114c, and the pressure measuring device 41 are attached to the sley 24 by the worker. Then, the operator operates the sub-nozzle injection direction adjusting device 40 to start the processing of the sub-nozzle injection direction adjusting device 40.

As shown in fig. 9, when the process of the sub-nozzle ejection direction adjusting device 40 is started, first, it is determined whether or not the ejection of the sub-nozzles 15 is started (step S1). Here, when the pressure sensor 43 detects the measurement value at the preliminary measurement point group P2 corresponding to the 2 nd pitot tube 44b, it is determined that the injection from the sub-nozzle 15 is started. While it is not determined that the injection from the sub-nozzle 15 is started (NO in step S1), the determination in step S1 is repeated. When the operator operates the sub-nozzle 15 to start the injection, it is determined that the injection from the sub-nozzle 15 is started (step S1: yes).

Next, it is determined whether or not the variation in the measurement values between the measurement points in the preliminary measurement point group P2 is equal to or greater than a predetermined threshold value (step S2). When the deviation of the measurement values between the measurement points in the preliminary measurement point group P2 is equal to or greater than the threshold value (yes in step S2), the operator moves the pressure measurement device 41 after the display unit 52 indicates that preliminary adjustment is necessary (step S3). When the worker moves the pressure measuring device 41 and determines that the deviation of the measured values between the measurement points in the preliminary measurement point group P2 is less than the threshold value (no in step S2), the process proceeds to the next process.

Then, the calculation unit 51 calculates the maximum wind pressure position Pc and the movement locus Tp based on the measurement values at the measurement point group P1 (step S4). Further, the maximum wind pressure position Pc, the movement locus Tp, the target position Pt, and the target movement locus Tt are displayed on the 1 st screen 52a of the display unit 52 (step S5).

Next, it is determined whether or not the movement locus Tp matches the target movement locus Tt (step S6). When the movement locus Tp does not coincide with the target movement locus Tt (no in step S6), the operator moves the pressure measuring device 41 by the distance adjustment amount Lb after displaying the distance adjustment amount Lb corresponding to the locus offset amount of the movement locus Tp from the target movement locus Tt on the 2 nd screen 52b of the display unit 52 (step S7). When the operator moves the distance adjustment amount Lb of the pressure measuring device 41 and determines in step S6 that the movement locus Tp matches the target movement locus Tt, the process proceeds to the next step (step S6: yes).

Next, it is determined whether or not the maximum wind pressure position Pc and the target position Pt coincide with each other (step S8). When the maximum wind pressure position Pc does not coincide with the target position Pt (no in step S8), the operator rotates the sub-nozzle 15 in the circumferential direction S12 by the rotation adjustment amount Lc after the rotation adjustment amount Lc corresponding to the positional offset amount of the maximum wind pressure position Pc from the target position Pt is displayed on the 3 rd screen 52c of the display unit 52 (step S9). When the adjustment of the rotation adjustment amount Lc of the sub-nozzle 15 in the circumferential direction S12 is performed by the operator and the maximum wind pressure position Pc is determined to match the target position Pt in step S8 (yes in step S8), it is determined that the adjustment of the injection direction of the sub-nozzle 15 is completed and the process is ended.

According to the present embodiment, the following effects can be obtained.

(1) The display unit 52 displays the maximum wind pressure position Pc, the target position Pt, the movement locus Tp of the maximum wind pressure position Pc, and the target movement locus Tt. The operator adjusts the position of the measurement point group P1 with respect to the sub-nozzle 15 until the movement locus Tp displayed on the display unit 52 matches the target movement locus Tt. In this way, in a state where the position of the measurement point group P1 with respect to the sub-nozzle 15 is adjusted, the worker adjusts the rotation of the sub-nozzle 15 in the circumferential direction S12 until the maximum wind pressure position Pc matches the target position Pt, and can adjust the maximum wind pressure position Pc to the target position Pt. Thus, the injection direction of the sub-nozzle 15 can be adjusted without adjusting the sub-nozzle 15 in the axial direction S11. Therefore, the injection direction of the sub-nozzle 15 can be more efficiently adjusted.

(2) The display unit 52 displays the distance adjustment amount Lb of the measurement point group P1 with respect to the sub-nozzle 15 as the trajectory deviation between the movement trajectory Tp and the target movement trajectory Tt. Therefore, the operator can adjust the position of the measurement point group P1 by the distance adjustment amount Lb displayed on the display unit 52, and can bring the target position Pt on the movement locus Tp. Therefore, the injection direction of the sub-nozzle 15 can be more efficiently adjusted than in the case where the worker adjusts the position of the measurement point group P1 while viewing the display unit 52.

(3) The display unit 52 displays the rotation adjustment amount Lc of the sub-nozzle 15 in the circumferential direction S12 as the positional deviation between the maximum wind pressure position Pc and the target position Pt. Therefore, the operator can adjust the rotation adjustment amount Lc displayed on the display unit 52 by rotating the sub-nozzle 15 in the circumferential direction S12, thereby making the maximum wind pressure position Pc coincide with the target position Pt. Therefore, the injection direction of the sub-nozzle 15 can be adjusted more efficiently than in the case where the worker adjusts the sub-nozzle 15 by rotating in the circumferential direction S12 while viewing the display unit 52.

(4) In addition to the measurement point group P1, the pressure sensor 43 measures the wind pressure of the air injected from the sub-nozzle 15 at the preliminary measurement point group P2 located outside the measurement point group P1. The display unit 52 displays that preliminary adjustment of the distance L between the measurement point group P1 and the sub-nozzle 15 is necessary, based on the measurement values of the pressure sensors 43 at the preliminary measurement point group P2. Therefore, the worker can adjust the position of the measurement point group P1 in accordance with the display of the display unit 52 that requires preliminary adjustment, and can adjust the injection direction of the sub nozzle 15 in a state where the maximum wind pressure position Pc of the sub nozzle 15 is surrounded by the measurement point group P1. Therefore, the adjustment of the injection direction of the sub-nozzle 15 can be performed more efficiently than in the case where the worker adjusts the position of the measurement point group P1 in a pseudo manner when adjusting the injection direction of the sub-nozzle 15.

The above embodiment can be modified and implemented as follows. The above-described embodiments and the following modifications can be combined and implemented within a range not technically contradictory to each other.

The adjusting dents 114c are not essential for adjusting the ejection direction of the sub-nozzle 15. In other words, the ejection direction of the sub-nozzle 15 may be adjusted by using the reed dent 14c of the air jet loom. In this case, the specifications of the calculating unit 51 or the display unit 52, the specification of the wind pressure measurement by the pressure sensor 43, and the like, and the specification of the sub-nozzle injection direction adjusting device 40 may be changed according to the specification of the reed dent 14 c.

The pressure sensor 43 may also have a pitot tube 44 surrounded and positioned by 41 st pitot tubes 44 a. The position of the pitot tube 44 is, for example, a position where the distances between the pitot tube 44 and the 1 st pitot tube 44a are all equal. The pitot tube 44 can measure the wind pressure at the center of the wind pressure distribution.

In addition to the need to perform preliminary adjustment of the distance L of the measurement point group P1 from the sub-nozzle 15, the display unit 52 may display information related to the preliminary adjustment based on the measurement values of the pressure sensors 43 at the preliminary measurement point group P2. For example, the display unit 52 may display the adjustment direction of the measurement point group P1 in which the measurement point group P1 is moved away from or closer to the sub-nozzle 15. In this case, the display unit 52 displays "+" when the preliminary adjustment for separating the measurement point group P1 from the sub-nozzle 15 is necessary, and "-" when the preliminary adjustment for approaching the measurement point group P1 to the sub-nozzle 15 is necessary, for example. For example, the display unit 52 may display the adjustment amount of the distance L between the measurement point group P1 and the sub-nozzle 15.

The number of the 2 nd pitot tubes 44b of the pressure sensor 43 can be changed as appropriate as long as it is 3 or more. In short, the wind pressure at the preliminary measurement point group P2 including 3 or more measurement points located outside the measurement point group P1 may be measured by the 2 nd pitot tube 44 b.

The 2 nd pitot tube 44b may also be omitted from the pressure sensor 43. In this case, a plurality of set values of the distance L are set in advance according to various textile conditions and weaving conditions, and when adjusting the ejection direction of the sub-nozzle 15, the worker adjusts the position of the measurement point group P1 with respect to the sub-nozzle 15 at the set value of the distance L corresponding to the textile conditions and weaving conditions. In the sub-nozzle injection direction adjusting device 40, the measurement of the wind pressure at the preliminary measurement point group P2 and the display of the preliminary adjustment at the display unit 52 are omitted. In the sub-nozzle ejection direction adjustment processing shown in fig. 9, the processing of step S2 and step S3 is omitted.

The number of the 1 st pitot tubes 44a of the pressure sensor 43 can be changed as appropriate as long as it is 3 or more. In short, the wind pressure at the measurement point group P1 including 3 or more measurement points may be measured by the 1 st pitot tube 44 a.

Instead of displaying the distance adjustment amount Lb, the display unit 52 may display that the position adjustment of the measurement point group P1 with respect to the sub-nozzle 15 is necessary. In this case, in step S7 shown in fig. 9, the display unit 52 displays that the position adjustment of the measurement point group P1 with respect to the sub-nozzle 15 is necessary. The display unit 52 may omit the display of the distance adjustment amount Lb and the display of the position adjustment of the measurement point group P1 with respect to the sub-nozzle 15. In this case, the process of step S7 shown in fig. 9 is omitted, and the process of step S6 is repeated while a negative determination is made in step S6.

Instead of displaying the rotation adjustment amount Lc, the display unit 52 may display that the rotation adjustment of the sub-nozzle 15 is necessary. In this case, in step S9 shown in fig. 9, the display unit 52 indicates that the rotation adjustment of the sub-nozzle 15 is necessary. The display unit 52 may omit display of the rotation adjustment amount Lc or display of the rotation adjustment of the sub-nozzle 15. In this case, the process of step S9 shown in fig. 9 is omitted, and the process of step S8 is repeated while a negative determination is made in step S8.

The display unit 52 may not display the target movement trajectory Tt. In this case, the display unit 52 displays the maximum wind pressure position Pc, the target position Pt, and the movement locus Tp. When the target position Pt displayed on the display unit 52 is not on the movement trajectory Tp, the operator adjusts the position of the measurement point group P1 with respect to the sub-nozzle 15 until the movement trajectory Tp includes the target position Pt.

The display unit 52 may not display the movement locus Tp. In this case, the display unit 52 displays the maximum wind pressure position Pc, the target position Pt, and the target movement trajectory Tt. When the maximum wind pressure position Pc displayed on the display unit 52 is not on the target movement trajectory Tt, the operator adjusts the position of the measurement point group P1 with respect to the sub-nozzle 15 until the maximum wind pressure position Pc is on the target movement trajectory Tt.

As described above, even when the display unit 52 does not display any of the target movement trajectory Tt and the movement trajectory Tp, the operator adjusts the rotation of the sub-nozzle 15 in the circumferential direction S12 after the position adjustment of the measurement point group P1, and can adjust the maximum wind pressure position Pc to the target position Pt. Thus, according to this modification, the injection direction of the sub-nozzle 15 can be adjusted without adjusting the sub-nozzle 15 in the axial direction S11, and thus the injection direction of the sub-nozzle 15 can be more efficiently adjusted.