A device for measuring the air pressure ejected from a sub-nozzle, a reed for an air-jet loom equipped therewith, and a method for adjusting the sub-nozzle.

Abstract

To provide a measuring device capable of achieving both downsizing of a body and high measurement accuracy.SOLUTION: There is provided a measuring device 10 of pressure of air jetted from a sub-nozzle 5. The measuring device 10 is mountable on a reed for an air jet loom. The reed for an air jet loom comprises an upper frame 3 for holding the upper end of a plurality of dents 2, and the sub-nozzle 5 for jetting air to weft passes 4 formed on the front of the plurality of dents 2. The measuring device 10 comprises a rail 20 having an attachment part 21 fitted to the upper frame 3, and a device body 30 having a Pitot tube 31 into which air flows and supported by the rail 20. The device body 30 is movable along the rail 20.SELECTED DRAWING: Figure 1

Description

Technical Field

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[0001] The present invention relates to a measuring device for air pressure injected from a sub-nozzle, a reed for an air jet loom provided with the same, and a method for adjusting the sub-nozzle.

Background Art

[0002] Conventionally, a reed for an air jet loom is known that includes an upper frame that holds the upper end of the reed and a sub-nozzle that injects air into a weft path formed on the front surface of the reed (for example, Patent Document 1). In the reed described in Patent Document 1, the weft yarn ejected from the main nozzle is assisted by the air ejected from the sub-nozzle and is conveyed within the weft path.

[0003] Here, a device for measuring the injection direction of the sub-nozzle has been proposed (for example, Patent Document 2). The device described in Patent Document 2 has, as one of its purposes, miniaturization, and includes a Pitot tube into which the air ejected from the sub-nozzle flows, a carrier having a display device (such as a liquid crystal device) that displays the flow rate of the air flowing into the Pitot tube, and a permanent magnet attached to the back surface of the carrier. According to Patent Document 2, the carrier can be moved in the weft insertion direction while being adsorbed to the reed by the magnetic force of the permanent magnet.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In recent years, with regard to reeds for air-jet looms, such as those described in Patent Document 1, there has been a demand for a device that measures the air pressure ejected from a sub-nozzle (hereinafter sometimes simply referred to as "air pressure"), which is expected to achieve both miniaturization and high measurement accuracy.

[0006] However, the apparatus described in Patent Document 2 had the problem that the carrier was still large. As a result, even if the carrier was moved to the end in the latitude direction, the pitot tube may not be able to reach the air injection position of the sub-nozzle that can be positioned at the end in the latitude direction. Attempting to reach the pitot tube to the air injection position could cause the carrier to fall off the reed.

[0007] In the apparatus described in Patent Document 2, the carrier comprises a first guide positioned on one end in the weft insertion direction and a second guide having a pitot tube on the other end in the weft insertion direction, and these guides are inserted into the weft path. The movement of the carrier, which is attracted to the reed by the magnetic force of a permanent magnet, in the weft insertion direction is guided by two points (the first guide and the second guide) that are separated by a predetermined distance. On the other hand, in such devices, the smaller the carrier is made to be, the smaller the width of the carrier in the lateral insertion direction tends to be, and in this case, the distance between the two points mentioned above must be brought closer. As a result, the movement stability of the carrier, which is attracted to the reed by the magnetic force of the permanent magnet, tends to decrease (for example, the carrier tends to become unstable when moving in the weft insertion direction), and as a result, it becomes difficult to achieve high measurement accuracy. It is also conceivable to mount an encoder on the carrier in such a device in order to obtain the sliding position on the reed. However, in this case, from the viewpoint of avoiding damage due to friction between the encoder on the carrier, which is attracted to the reed by the magnetic force of the permanent magnet, and the reed, the pressing force of the encoder on the reed must be kept below a predetermined value. As a result, it is expected that the encoder will tend to slip against the reed, and the sliding position information will become unclear.

[0008] Therefore, the inventors have found that, firstly, a device for measuring the air pressure sprayed from a sub-nozzle requires a function for measuring air pressure and a function for supporting the main body having this function on the reed, and secondly, that there is dead space above the reed. One of the objectives of the present invention is to provide a measuring device that can achieve both miniaturization of the main body and high measurement accuracy by distinguishing between the function for measuring air pressure and the function for supporting the main body having this function on the reed, and by effectively utilizing the space above the reed. [Means for solving the problem]

[0009] Examples of embodiments of the present invention are listed below. [1] A device for measuring the air pressure injected from a sub-nozzle, The aforementioned measuring device can be mounted on the reed of an air jet loom. The aforementioned reed for the air jet loom is An upper frame that holds the upper ends of multiple reed feathers, The measuring device comprises a sub-nozzle that injects air into the weft thread path formed on the front surface of the plurality of reeds, and the measuring device is A rail having a mounting portion that fits the upper frame, The device comprises a main body having a pitot tube through which the aforementioned air flows, and supported by the aforementioned rail, A measuring device in which the main body is movable along the rail. [2] The measuring device according to [1], wherein the mounting portion has a hook shape that can be hooked onto the upper frame. [3] The rail comprises a frame portion having a plate shape extending in a predetermined direction, The mounting portion is arranged on one side of the frame portion, and is the measuring device according to [1] or [2]. [4] The measuring device according to [3], wherein the frame portion is made of a material harder than the mounting portion. [5] The rail has the mounting portion and the rail gear, The main body comprises the pitot tube and the main body gear, A measuring device according to any one of [1] to [4], wherein the position of the main body on the rail can be adjusted by the meshing of the rail gear and the main body gear. [6] The measuring device according to [5], wherein the rail gear is a rack gear along the extending direction of the rail. [7] The measuring device according to [5] or [6], wherein the main gear is a pinion gear that rotates around its shaft. [8] The measuring device according to any one of [5] to [7], wherein the rail gear is arranged in a positional relationship when the rail is attached to the reed, including a position above the mounting portion. [9] The main body comprises a first auxiliary roller having an axis along the shaft portion of the main body gear, The measuring device according to any one of [5] to [8], wherein the first auxiliary roller abuts against the front surface of the rail in the positional relationship when the main body is attached to the rail.

[10] The main body comprises a second auxiliary roller having an axis along the shaft portion of the main body gear, The measuring device according to any one of [5] to [9], wherein the second auxiliary roller abuts against the back surface of the rail in the positional relationship when the main body is attached to the rail.

[11] The main body is equipped with a third auxiliary roller having an axis that intersects the shaft portion of the main body gear, The measuring device according to any one of items [5] to

[10] , wherein the third auxiliary roller contacts the upper surface of the rail in the positional relationship when the main body is attached to the rail.

[12] The measuring device according to any one of [5] to

[11] , wherein the main body is divisible into a first unit having the main body gear and a second unit having the Pitot tube.

[13] The first unit has a plurality of pins protruding from the side opposite to the main gear, The second unit is the measuring device according to

[12] , which has a plurality of holes corresponding to the plurality of pins.

[14] The main body is the measuring device according to any one of [5] to

[13] , which has a rotation speed sensor for detecting the rotation speed of the main body gear.

[15] The main body is the measuring device according to any one of [5] to

[14] , which includes a controller that transmits at least one of information regarding the rotation speed of the main body gear and information regarding the air pressure to the outside. [[ID=I0]]

[16] The measuring device according to any one of [1] to

[15] , and an upper frame that holds the upper ends of a plurality of reed blades, and a sub-nozzle that injects air into the weft path formed on the front surface of the plurality of reed blades, a reed for an air jet loom.

[17] A method for adjusting a sub-nozzle, which uses the measuring device according to any any one of [1] to

[15] and adjusts the sub-nozzle based on the measurement result obtained by the measuring device.

[18] The method for adjusting a sub-nozzle according to

[17] , which adjusts at least one of the angle and arrangement of the sub-nozzle.

[19] The method for adjusting a sub-nozzle according to

[17] or

[18] , in which the measurement result is displayed on a mobile terminal outside the measuring device. [[ID=2I]]

Advantages of the Invention

[0010] According to the present invention, by paying attention to and distinguishing between the function of measuring air pressure and the function of supporting the main body having the function on the reed, and effectively using the space above the reed, it is possible to provide a measuring device that can achieve both miniaturization of the main body and high measurement accuracy. Further, according to the present invention, it is possible to provide a reed for an air jet loom including such a measuring device and a method for adjusting a sub-nozzle.

Brief Description of the Drawings

[0011] [Figure 1] A diagram showing an example of mounting a measuring device according to Embodiment 1 of the present invention. [Figure 2] A diagram showing an example configuration of a measuring device according to Embodiment 1 of the present invention. [Figure 3] A diagram showing an example configuration of a measuring device according to Embodiment 1 of the present invention. [Figure 4] A diagram showing an example configuration of a measuring device according to Embodiment 1 of the present invention. [Figure 5] A diagram showing an example configuration of a measuring device according to Embodiment 2 of the present invention. [Modes for carrying out the invention]

[0012] The embodiments of the present invention (hereinafter abbreviated as "embodiments") will be described below. However, the present invention is not limited to the following embodiments and can be implemented with various modifications within the scope of its gist. The scale and shape of each component shown in the drawings may be exaggerated or omitted in part for clarity.

[0013] [Embodiment 1] 《A device for measuring the air pressure ejected from a sub-nozzle》 Figure 1 shows an example of mounting of a device for measuring the air pressure injected from a sub-nozzle (hereinafter also referred to simply as "measuring device") according to this embodiment.

[0014] As shown in the figure, the measuring device 10 can be mounted on a reed for a so-called air jet loom. The reed 1 according to this embodiment includes an upper frame 3 that holds the upper ends of a plurality of reed blades 2, a sub-nozzle 5 that injects air into the weft path 4 formed on the front surface of the plurality of reed blades 2, and the measuring device 10. In the reed 1, the weft yarn W ejected from the main nozzle 6 is transported through the weft path 4 with assistance from the air injected from the sub-nozzle 5. Some of the reed blades 2 are omitted from the illustration in the figure. In this specification, the left-right direction of the reed 1 (the direction along the weft path 4) is also referred to as the first direction X, the front-back direction of the reed 1 is also referred to as the second direction Y, and the up-down direction of the reed 1 is also referred to as the third direction Z. The first direction X and the second direction Y are along the horizontal direction, and the third direction Z is along the direction of gravity.

[0015] Multiple sub-nozzles 5 are arranged along the first direction X. The sub-nozzles 5 may be located at the end of the first direction X. Because the main body 30 of the measuring device 10 is small, the pitot tube 31 can reach sufficiently to the air injection position of the sub-nozzles 5 located at the end of the first direction X.

[0016] The angle of the sub-nozzle 5 in the up, down, left, and right directions, and / or its position along the first direction X, can be tuned by the user. It is preferable that the sub-nozzle 5 is adjusted so that the weft yarn W is suitably conveyed by air pressure. Such adjustments can be made manually or automatically, but in either case, fine manual adjustments are often necessary. In some cases, replacement of the sub-nozzle 5 itself may be considered. In addition to adjustments to the angle and / or position of the sub-nozzle 5, replacement of the sub-nozzle itself is also included in "sub-nozzle adjustment" as described herein.

[0017] The lower ends of the multiple reed blades 2 are held by the lower frame 7. On the other hand, in an air-jet loom reed like the reed 1, there is dead space (space S) above the upper frame 3. This space S is effectively utilized, and the measuring device 10 is placed on the upper frame 3.

[0018] Figures 2 to 4 show examples of the configuration of the measuring device 10 according to this embodiment. Of these, Figure 2 is a perspective view, Figure 3 is a side view, Figure 4(a) is a bottom view, and Figure 4(b) is a rear view. The first direction X, the second direction Y, and the third direction Z in the figures correspond to all figures, including Figure 1.

[0019] As shown in the figure, the measuring device 10 is A rail 20 having a mounting portion 21 that fits the upper frame 3 and a rail gear 22, It comprises a main body 30 having a pitot tube 31 into which air flows, and a main body gear 32, The meshing of the rail gear 22 and the main body gear 32 allows the position of the main body 30 on the rail 20 to be adjusted.

[0020] Of the measuring device 10, the main body 30 has a measuring function (hereinafter also simply referred to as the "measuring function") for measuring air pressure in relation to the other parts, and the rail 20 has a supporting function (hereinafter also simply referred to as the "supporting function") for supporting the main body 30 having the measuring function on the upper frame 3 in relation to the other parts. Such a measuring device 10 is arranged in the dead space, the space S above the reed 1. With the measuring device 10, by distinguishing between the measuring function and the supporting function, and by effectively utilizing the space S above the reed 1, it is possible to miniaturize the main body 30 and improve the stability of the main body 30 relative to the reed 1, thereby improving the measurement accuracy.

[0021] <rail> (Support function) The rail 20, in conjunction with the other parts, has a support function that allows the main body 30 to be supported by the upper frame 3. Even if the rail 20 itself is bulky, it eliminates the need for the main body 30 to achieve the support function alone, thus allowing for miniaturization of the main body 30. The miniaturized main body 30 is lightweight and highly portable. Because the rail 20 effectively performs its support function, it is easier to suppress unintended collisions between the reed 1 and the main body 30 (causing damage due to collisions), as well as friction between the reed 1 and the main body 30 (causing damage due to friction), compared to conventional technologies (for example, technologies that use the magnetic force of permanent magnets to attract the carrier to the reed while moving the carrier).

[0022] (Mounting part) The rail 20 has a mounting portion 21 that fits into the upper frame 3. This allows for effective use of the space S and improves the stability of the rail 20, and by extension the main body 30, relative to the reed 1. "Fitting into the upper frame" means, for example, having a shape that corresponds to the upper frame, being able to be hooked onto the upper frame, or being able to be fitted into the upper frame, so as to be able to be temporarily or permanently fixed to the upper frame.

[0023] The mounting portion 21 has a hook shape that can be hooked onto the upper frame 3. The mounting portion 21, which is a hook, comprises a support column portion 21a and a claw portion 21b that rises from the tip of the support column portion 21a. This makes it easy to attach and detach the rail 20 to the upper frame 3, and because the claw portion 21b bites into the upper frame 3 when it receives a load, it becomes easier to stably position the rail 20, and by extension the main body 30, on the upper frame 3.

[0024] The claw portion 21b has a claw width (hook width) that corresponds to the width of the upper frame 3 (width in the second direction Y). This allows the claw portion 21b to be fitted into the upper frame 3, making it easier to more stably position the rail 20, and by extension the main body 30, on the upper frame 3. Alternatively, the mounting portion 21 may be equipped with a mechanism to make the hook width variable. Examples of mechanisms to make the hook width variable include a ratchet mechanism, a mechanism using a slide, a mechanism using an elastic member, and so on.

[0025] The mounting portion 21 is made of, for example, resin. This makes it less likely for the upper frame 3 to be damaged when attaching or detaching the mounting portion 21 to the upper frame 3. The type of resin is not limited, and suitable materials can be used alone or in combination.

[0026] (Frame section) The rail 20 includes a frame portion 23. The frame portion 23 has a plate shape extending in a predetermined direction. A mounting portion 21 is provided on one side 23a of the plate-like frame portion 23. Therefore, when the rail 20 is attached to the upper frame 3, the other side 23b of the frame portion 23 faces the front. The mounting portion 21 is provided along the extending direction of the frame portion 23. This makes it easier to more stably position the rail 20, and by extension the main body 30, on the upper frame 3. The mounting portion 21 may be provided intermittently along the extending direction of the frame portion 23, but it is preferable that it be provided continuously from the viewpoint of the stability of the rail 20 relative to the upper frame 3.

[0027] The mounting portion 21 and the frame portion 23 may be integrally constructed from the same material from the viewpoint of structural integrity. On the other hand, the mounting portion 21 and the frame portion 23 may be deliberately constructed from different materials. This makes it easier to suitably provide the mounting portion 21 with the function of attaching the rail 20 to the upper frame 3, and the frame portion 23 with the function of receiving the main body 30 (for example, the first auxiliary roller 33a of the main body 30). In this embodiment, the two are made of different materials and are fixed to each other (for example, fixed with screws; not shown).

[0028] The frame portion 23 is constructed of a material that is harder than the mounting portion 21, for example. This makes it easier to ensure that the frame portion 23 has durability against the movement of the main body 30 (such as wear resistance against the rolling of the first auxiliary roller 33a). The mounting portion 21 is made of resin, for example, and the frame portion 23 is made of metal, for example. The types of resin and metal are not limited, and suitable materials can be used alone or in combination. The frame portion 23 may optionally have weight-reducing holes 24.

[0029] (Rail gear) The rail 20 has a rail gear 22. The rail gear 22 meshes with the main body gear 32. The meshing of the rail gear 22 and the main body gear 32 allows the position of the main body 30 on the rail 20 to be adjusted. The meshing action of the gears allows the main body 30 to be moved along the extending direction (first direction X) of the rail 20. The gears receive resistance and come to rest at a predetermined meshing position. The stopping of the gears at the meshing position suppresses slippage of the main body 30 on the reed 1.

[0030] The rail gear 22 is a rack gear aligned with the extending direction of the rail 20. This makes it easier to realize the gear mechanism of the rail 20 and the main body 30. The rail gear 22, being a rack gear, has multiple teeth 22a that protrude in the opposite direction to the mounting portion 21. Therefore, in the positional relationship when the rail 20 is attached to the upper frame 3, the multiple teeth 22a face the front side. The teeth 22a perform the function of meshing with the main body gear 32.

[0031] Furthermore, the rail gear 22, which is a rack gear, has a substantially flat back surface 22b on the opposite side of the multiple teeth 22a. Therefore, in the positional relationship when the rail 20 is attached to the upper frame 3, the back surface 22b faces the rear side. The back surface 22b performs the function of supporting the main body 30 (for example, the second auxiliary roller 33c of the main body 30).

[0032] The rail gear 22 is positioned on the side of the frame portion 23 between one side 23a and the other side 23b. Therefore, in the positional relationship when the rail 20 is attached to the upper frame 3, the rail gear 22 is positioned above the frame portion 23 (upper position along the third direction Z). This makes it easier to realize the gear mechanism of the rail 20 and the main body 30.

[0033] From the viewpoint of structural integrity, the rail gear 22 may be integrally configured with at least one of the mounting portion 21 and the frame portion 23. In this embodiment, the rail gear 22 is made of resin, is integrally configured with the mounting portion 21, and is fixed to each other (for example, by screws; not shown).

[0034] (Rolling surface) Each part of the rail 20 constitutes a rolling surface for the auxiliary rollers 33 on the main body 30. The front surface of the rail 20 (the other surface 23b of the frame portion 23) constitutes the rolling surface for the first auxiliary roller 33a, the back surface of the rail 20 (the back surface 22b of the rail gear 22) constitutes the rolling surface for the second auxiliary roller 33c, and the top surface of the rail 20 (the top surface 21c of the mounting portion 21) constitutes the rolling surface for the third auxiliary roller 33e. Therefore, in the positional relationship when the measuring device 10 is attached to the upper frame 3, the rail 20 assists the movement of the main body 30 on the rail 20 with at least three surfaces: the front, top, and back. This further improves the stability of the rail 20, and by extension the main body 30, relative to the reed 1.

[0035] <Main body> (Measurement function) The main body 30, in conjunction with the other parts, has a measuring function for measuring the air pressure ejected from the sub-nozzle 5. As described above, since the rail 20 has a support function, it is not necessary for the main body 30 to achieve the support function by itself. This allows for a more compact and denser main body configuration, and therefore, the main body 30 can be made smaller. Because the main body 30 is small, the pitot tube 31 can reach sufficiently to the air ejection position of the sub-nozzle 5 located at the end of the first direction X. Since the main body 30 is positioned on the upper frame 3 via the rail 20, improved stability of the main body 30 relative to the reed 1 can also be achieved, resulting in higher measurement accuracy.

[0036] (Pitot tube) The main body 30 is equipped with a pitot tube 31 into which air flows. In the positional relationship when the measuring device 10 is attached to the upper frame 3, the pitot tube 31 protrudes from the lower end of the main body 30 toward the reed blades 2, and its tip is located within the weft thread path 4. The pitot tube 31 has a known configuration, so a detailed explanation is omitted here. The air flowing into the pitot tube 31 is guided to the wind pressure sensor 38 through a nylon tube (not shown) (in Figure 3, the airflow between the pitot tube 31 and the wind pressure sensor 38 is shown by a dashed line for convenience). Information regarding the air pressure measured by the wind pressure sensor 38 is transmitted to the controller 39 in the main body 30.

[0037] (Main body gear) The main body 30 has a main body gear 32 that meshes with the rail gear 22. The main body gear 32 meshes with the rail gear 22. The meshing of the rail gear 22 and the main body gear 32 allows the position of the main body 30 on the rail 20 to be adjusted. As described above, the meshing action of the gears allows the main body 30 to be moved along the extending direction (first direction X) of the rail 20, and the stopping of the gears at the meshing position suppresses the slippage of the main body 30 on the reed 1.

[0038] The main gear 32 is a pinion gear that rotates around its shaft 32a. This makes it easier to realize the gear mechanism of the rail 20 and the main body 30. The main gear 32, which is a pinion gear, is made of resin, and therefore has excellent structural compatibility with the rail gear 22, which is also made of resin.

[0039] (First unit and second unit) The main body 30 can be divided into, for example, a first unit 30A having a main body gear 32 and a second unit 30B having a pitot tube 31. This allows each unit to be specialized for a specific function. The first unit can be made general-purpose and the second unit specialized, or vice versa. The fact that the main body 30 is a divisible body also improves portability.

[0040] In one example, the second unit 30B, which has a Pitot tube 31, is equipped with various sensors and / or a control unit for suitably measuring air pressure. It is a preferred embodiment that such a second unit 30B can be maintained, managed, and carried separately from the other units. The main body 30 may be configured to be divided into three or more parts.

[0041] The first unit 30A and the second unit 30B are divisible parts that can be separated in the front-to-back direction, depending on their positional relationship when the measuring device 10 is attached to the upper frame 3. This makes it easier to attach and detach the second unit 30B to the first unit 30A while the first unit 30A remains attached to the rail 20. However, each unit may also be a divisible part that can be separated in the vertical direction.

[0042] It is preferable that corresponding uneven surfaces are formed between the first unit 30A and the second unit 30B. This makes positioning easier when attaching the two units, as the uneven surfaces act as guides. The term "uneven surface" here is a concept that includes simple stepped surfaces. Therefore, any so-called discontinuous surface is included in the term "uneven surface".

[0043] In this regard, it is preferable that the first unit 30A and / or the second unit 30B have a convex portion and a recess corresponding to the convex portion on their opposing parts. With this configuration, the restrictive force provided by the convex portion and the recess makes it difficult for the first unit 30A and the second unit 30B to shift in the first direction X even with respect to the acceleration force and inertial force of the main body 30 along the first direction X. The first unit 30A has a convex portion and the second unit 30B has a recess, the first unit 30A has a recess and the second unit 30B has a convex portion, or the first unit 30A and the second unit 30B have both a convex portion and a recess.

[0044] In one example, the first unit 30A has a plurality of pins 34 protruding from the opposite side of the main gear 32, and the second unit 30B has a plurality of holes 35 corresponding to the plurality of pins 34. This allows for the insertion and removal of the pitot tube 31 into and out of the weft path 4 simultaneously with the attachment and detachment of the first unit 30A and the second unit 30B. The number of pairs of pins 34 and holes 35 is, for example, two, but it may be one or three or more. However, from the viewpoint of the integrated stability of the first unit 30A and the second unit 30B, two or more are preferred. Other components, such as elastic material, may be interposed between the first unit 30A and the second unit 30B. The first unit 30A and the second unit 30B may have an optional holding mechanism to maintain their positioned state.

[0045] (Encoder disk and rotation speed sensor) The main body 30 (for example, the first unit 30A) has an encoder disk 36 that is directly or indirectly connected to the shaft 32a of the main body gear 32. This makes it easier to detect information about the rotational speed of the main body gear 32 based on the rotational speed of the encoder disk 36, which rotates in accordance with the rotation of the shaft 32a of the main body gear 32. The encoder disk 36 protrudes from the connection surface of the first unit 30A to the second unit 30B. In one embodiment, the encoder disk 36 may be directly connected to the shaft 32a of the main body gear 32. On the other hand, as shown in other embodiments described later, the encoder disk 36 may be indirectly connected to the shaft 32a of the main body gear 32 (i.e., via another gear).

[0046] The main unit (for example, the second unit 30B) has, for example, a rotation speed sensor 37 that detects the rotation speed of the main unit gear 32. This makes it easier to accurately detect information regarding the rotation speed of the main unit gear 32. In one example, the rotation speed sensor 37 includes a light-emitting part 37a and a light-receiving part 37b that receives light emitted from the light-emitting part 37a. The light-emitting part 37a and the light-receiving part 37b are arranged with a predetermined space (bracket 37c) in between. Also, in one example, an opening formed in the second unit 30B communicates with the bracket 37c. When the first unit 30A and the second unit 30B are combined, the encoder disk 36 is inserted into the bracket 37c through the opening in the second unit 30B. The encoder disk 36 has slit holes formed at equal intervals, and light from the light-emitting part 37a is detected by the light-receiving part 37b through the slit holes at a frequency corresponding to the rotation speed of the encoder disk 36. This configuration is preferred because it makes it easier to detect the rotational speed of the encoder disk 36 on the second unit 30B side. Information regarding the rotational speed of the main gear 32, detected by the rotational speed sensor 37, is transmitted to the controller 39.

[0047] (Auxiliary roller) The main body 30 is equipped with auxiliary rollers 33. The auxiliary rollers 33 assist in the movement of the main body 30 on the rail 20. In this embodiment, in the positional relationship when the measuring device 10 is attached to the upper frame 3, the auxiliary rollers 33 contact at least three surfaces of the rail 20: the front, top, and back. Then, in accordance with the meshing operation of the gears, the auxiliary rollers 33 roll on these surfaces. This further improves the stability of the main body 30 relative to the rail 20.

[0048] For example, the main body 30 (for example, the first unit 30A) is equipped with a first auxiliary roller 33a having an axis 33b aligned with the shaft portion 32a of the main body gear 32. In the positional relationship when the measuring device 10 is attached to the upper frame 3, the axis 33b is aligned with the second direction Y, and the first auxiliary roller 33a is in contact with the front surface of the rail 20. The first auxiliary roller 33a rolls along the front surface of the rail 20, which is the rolling surface, as the main body 30 moves.

[0049] Furthermore, for example, the main body 30 (for example, the first unit 30A) is equipped with a second auxiliary roller 33c having an axis 33d aligned with the shaft portion 32a of the main body gear 32. In the positional relationship when the measuring device 10 is attached to the upper frame 3, the axis 33d is aligned with the third direction Z, and the second auxiliary roller 33c is in contact with the back surface of the rail 20. The second auxiliary roller 33c rolls along the back surface of the rail 20, which is the rolling surface, as the main body 30 moves. The second auxiliary roller 33c is positioned opposite the main body gear 32, and the rail gear 22 is sandwiched between the second auxiliary roller 33c and the main body gear 32.

[0050] Furthermore, for example, the main body (for example, the first unit 30A) is equipped with a third auxiliary roller 33e having an axis 33f that intersects the shaft portion 32a of the main body gear 32. In the positional relationship when the measuring device 10 is attached to the upper frame 3, the axis 33f is along the second direction Y, and the third auxiliary roller 33e is in contact with the upper surface of the rail 20. The third auxiliary roller 33e rolls on the upper surface of the rail 20, which is the rolling surface, in accordance with the movement of the main body 30.

[0051] (controller) The main unit (for example, the second unit 30B) includes a controller 39 that detects at least one of the following: information regarding the rotational speed of the main unit gear 32 and information regarding the air pressure measured by the Pitot tube 31. This allows for the appropriate collection of the above information, and by using the collected information, the sub-nozzle 5 can be appropriately adjusted. Specifically, each control unit in the controller 39 is realized by the execution of a program by a microcomputer.

[0052] The controller 39 is connected to an external mobile terminal (symbol M shown in Figure 1) by wire or wireless connection. The measurement results obtained by the controller 39 are displayed on this mobile terminal M. This makes it optional for the main unit 30 to be equipped with an LCD and meter for displaying pressure, thus making it easier to further miniaturize the main unit 30. Examples of mobile terminals M include smartphones, smartwatches, and notebook PCs. The controller 39 may transmit data to the mobile terminal M via a relay point.

[0053] 《How to adjust the sub-nozzle》 In this embodiment, the method for adjusting the sub-nozzle 5 involves using a measuring device 10 and adjusting the sub-nozzle 5 based on the measurement results obtained from the measuring device 10. This makes it easier to achieve a suitable air injection.

[0054] The adjustment method for the sub-nozzle 5 involves adjusting at least one of the angle and position of the sub-nozzle 5. This makes it easier to achieve a suitable air injection. The measurement results are displayed on a portable terminal M located outside the measuring device 10. The user can adjust the sub-nozzle 5 based on the results displayed on the portable terminal M.

[0055] In addition to the above, the mobile terminal M may also display an example of the recommended angle and / or recommended placement of the sub-nozzle 5. This allows the user to tune the sub-nozzle 5 using such recommended information as a guide, making it easier to achieve optimal air injection.

[0056] [Embodiment 2] Figure 5 shows an example configuration of the measuring device 100 according to this embodiment. The measuring device 100 differs from the measuring device 10 of Embodiment 1 in that it does not have rail gears and body gears. Hereinafter, the same reference numerals will be used to denote the components corresponding to Embodiment 1 in this embodiment.

[0057] The rail 200 has sliding surfaces. In Embodiment 1, the surface on which the teeth 22a of the rail gear 22 are formed is flat and is designated as the sliding surface 220a. Also in Embodiment 1, the back surface 22b of the rail gear 22 is designated as the sliding surface 220b. Furthermore, the upper surface 21c of the rail 200 is designated as the sliding surface 210c. In the positional relationship when the main body 300 (first unit 300A) is attached to the rail 200, the first unit 300A contacts at least three sliding surfaces (sliding surface 220a, sliding surface 220b, and sliding surface 210c). The main body 300 (first unit 300A) is movable along the rail 200 by sliding on the sliding surfaces.

[0058] In other words, the measuring device 100 according to this embodiment is Rail 200 having a mounting portion 21, It comprises a main body 300 having a pitot tube 31 and supported by a rail 200, The main unit 300 can move along the rail 200. This configuration also allows for the distinction between the function of measuring air pressure and the function of supporting the main body 300, which has this function, on the reed, and enables effective use of the space above the reed. This makes it possible to achieve both miniaturization of the main body 300 and high measurement accuracy.

[0059] In one embodiment, it is preferable that at least one of the sliding surfaces 220a, 220b, and 210c contains a low-friction material or is coated with a low-friction material. Examples of low-friction materials include, but are not limited to, polytetrafluoroethylene (PTFE). In one embodiment, the surface on the main body 300 side corresponding to at least one of the sliding surfaces 220a, 220b, and 210c may contain a low-friction material or be coated with a low-friction material.

[0060] In one embodiment, the encoder disk 36 in the first unit 300A may be omitted, and the aperture and rotation speed sensor 37 in the second unit 300B may be omitted. Alternatively, the main body 300 (second unit 300B) may be equipped with an encoder 360 on its side. The encoder 360 is equipped with a rotor 360a and functions as a rotation speed sensor capable of detecting its rotation speed. The rotor 360a or its shaft is biased in the direction of protrusion of the Pitot tube 31 by a biasing means (not shown; for example, a spring, an elastic member, etc.) via an arbitrary receiving part. In the positional relationship when the main body 300 is attached to the rail 200, the rotor 360a abuts against the frame portion 23 of the rail 200. As the main body 300 moves, the rotor 360a rotates due to friction between the rotor 360a and the rail 200, and the amount of rotation is detected. Information regarding the rotation speed is transmitted to a controller in the main body 300.

[0061] Similar to Embodiment 1, this embodiment has a support function in which the rail 200, in conjunction with other parts, supports the main body 300 on the upper frame. Since the rail 200 and the rotor 360a rub against each other, friction (damage due to friction) between the reed 1 and the main body 300 is easily avoided. As the need to consider damage to the reed 1 due to friction is reduced, it is easier to increase the frictional force between the rotor 360a and the rail 200 by changing the material of the rotor 360a or increasing the biasing force of the biasing means. Increasing the frictional force between the rotor 360a and the rail 200 leads to a decrease in the free-spinning tendency of the rotor 360a, i.e., higher measurement accuracy.

[0062] [Other embodiments] The measuring device according to this embodiment has been described above. However, the present invention is not limited to the above configuration. Both the embodiment with a rail gear and a main body gear, as shown in Embodiment 1, and the embodiment without a rail gear and a main body gear, as shown in Embodiment 2, are included in the present invention.

[0063] Furthermore, in one embodiment, unlike the configuration of Embodiment 1, the rail side may have a continuous pinion gear and the main body side may have a rack gear. With such a configuration, the position of the main body on the rail can also be adjusted. In addition, other gears may be interposed between the rail gear and the main body gear. In addition, other gears may be interposed between the encoder disc and the shaft portion of the main body gear. Furthermore, the rail may have rail gears on its upper surface and / or back surface, and the main body may have a pinion gear that meshes with such rail gears. Moreover, the measuring device of Embodiment 2 may have gears other than the rail gear and the main body gear as needed.

[0064] In one embodiment, the encoder disc shown in Embodiment 1 may be arranged on the second unit side of the main body. In this case as well, the shaft portion of the encoder disc can be connected to the rail gear via other gears as needed. Alternatively, the encoder shown in Embodiment 2 may be arranged on the first unit side of the main body. Furthermore, the controller may be arranged on the first unit side of the main body. Various sensors may also be arranged on either the first unit side or the second unit side. Encoders and / or controllers may be arranged on the first unit side and the second unit side, respectively.

[0065] The main body may not have a display unit (LCD and / or meter, etc.) for displaying pressure. On the other hand, the main body may have a display unit for displaying pressure, to the extent that it does not hinder miniaturization. The first unit and the second unit may be configured as a single unit. The first unit and the second unit may be a divided body that can be separated vertically in the positional relationship in which the measuring device is mounted on the upper frame.

[0066] In both Embodiments 1 and 2, the main body can be suitably supported by rails. Therefore, unlike the conventional technology (for example, the technology of inserting two separate guides into the weft path to guide the carrier to the reed), even if a configuration is adopted in which "a single guide having a Pitot tube is inserted into the weft path," the movement stability of the main body can be improved. In other words, both miniaturization of the main body and high measurement accuracy can be achieved. In one embodiment, the main body may be equipped with a Pitot tube (or a guide having a Pitot tube) starting from a point including the center position in its first direction X (width direction). This makes it easier to further miniaturize the main body. However, the main body may have two or more guides that can be inserted into the weft path, to the extent that it does not hinder miniaturization.

[0067] The constituent materials of each part of the rail and main body are not limited to those described above. The receiving parts for the second and third auxiliary rollers may be made of metal material. The rail may have auxiliary rollers. The rail and / or main body may have auxiliary rollers other than those described above.

[0068] The auxiliary roller equivalent may be made using balls. In this case, balls are placed in grooves that constitute the ball receiving section, and a cover with holes smaller than the diameter of the balls is attached on top, allowing the heads of the balls to protrude from the holes. However, these auxiliary rollers and / or balls may be replaced with structures other than those described above, for example, a gear structure as a configuration involving rotational motion, or a structure with excellent sliding properties as a configuration that does not involve rotational motion. [Industrial applicability]

[0069] The present invention is suitably applicable in the fields of a device for measuring the air pressure ejected from a sub-nozzle, a reed for an air-jet loom equipped therewith, and a method for adjusting the sub-nozzle. [Explanation of symbols]

[0070] 1: Reed (reed for air jet loom) 2: Multiple reed feathers 3: Top frame 4: Weft Path 5: Sub-nozzle 6: Main nozzle 7: Bottom frame 10: Measuring device (air pressure measuring device) 20: Rail 21: Mounting part 21a: Support section 21b: Claw part 21c:Top surface 22: Rail gear (rack gear) 22a: Teeth 22b: Back 23: Frame section 23a: One side 23b: Other side 24: Weight reduction holes 30: Main unit 30A: First Unit 30B: Second Unit 31: Pitot tube 32: Main gear (pinion gear) 32a:Shaft part 33: Auxiliary roller 33a: First auxiliary roller 33b: Axis of the first auxiliary roller 33c: Second auxiliary roller 33d: Axis of the second auxiliary roller 33e: Third auxiliary roller 33f: Axis of the third auxiliary roller 34: Pin 35: Hole 36: Encoder disk 37: Rotation speed sensor 37a: Light-emitting part 37b: Light receiving part 37c: Bracket 38: Wind pressure sensor 39: Controller 100: Measuring device (air pressure measuring device) 200: Rail 210c: Sliding surface 220a: Sliding surface 220b: Sliding surface 300: Main unit 300A: First Unit 300B: Second Unit 360: Encoder 360a: Rotor M: Mobile device S: Space W: Weft thread X: First direction (left / right direction) Y:Second direction (back and forth direction) Z: Third direction (vertical direction)

Claims

1. A device for measuring the air pressure injected from a sub-nozzle, The aforementioned measuring device can be mounted on the reed of an air jet loom. The aforementioned reed for the air jet loom is An upper frame that holds the upper ends of multiple reed feathers, The measuring device comprises a sub-nozzle that injects air into the weft thread path formed on the front surface of the plurality of reeds, and the measuring device is A rail having a mounting portion that fits the upper frame, The device comprises a main body having a pitot tube through which the aforementioned air flows, and supported by the aforementioned rail, The rail has the mounting portion and the rail gear, The main body comprises the Pitot tube, a main body gear, and a rotation speed sensor for detecting the rotation speed of the main body gear. The meshing of the rail gear and the body gear allows the position of the body on the rail to be adjusted. A measuring device in which the main body is movable along the rail.

2. A device for measuring the air pressure injected from a sub-nozzle, The aforementioned measuring device can be mounted on the reed of an air jet loom. The aforementioned reed for the air jet loom is An upper frame that holds the upper ends of multiple reed feathers, The measuring device comprises a sub-nozzle that injects air into the weft thread path formed on the front surface of the plurality of reeds, and the measuring device is A rail having a mounting portion that fits the upper frame, The device comprises a main body having a pitot tube through which the aforementioned air flows, and supported by the aforementioned rail, The rail has the mounting portion and the rail gear, The main body comprises the Pitot tube, a main body gear, and a controller that transmits to the outside at least one of the following: information relating to the rotational speed of the main body gear and information relating to the air pressure. The meshing of the rail gear and the body gear allows the position of the body on the rail to be adjusted. A measuring device in which the main body is movable along the rail.

3. The measuring device according to claim 1 or 2, wherein the mounting portion has a hook shape that can be hooked onto the upper frame.

4. The rail comprises a frame portion having a plate shape extending in a predetermined direction, The measuring device according to claim 1 or 2, wherein the mounting portion is arranged on one side of the frame portion.

5. The measuring device according to claim 4, wherein the frame portion is made of a material harder than the mounting portion.

6. The measuring device according to any one of claims 1 to 5, wherein the rail gear is a rack gear along the direction of extension of the rail.

7. The measuring device according to any one of claims 1 to 6, wherein the main gear is a pinion gear that rotates around its shaft.

8. The measuring device according to any one of claims 1 to 7, wherein the rail gear is arranged in a positional relationship when the rail is attached to the reed for the air jet loom, including a position above the mounting portion.

9. The main body comprises a first auxiliary roller having an axis along the shaft portion of the main body gear, The measuring device according to any one of claims 1 to 8, wherein, in the positional relationship when the main body is attached to the rail, the first auxiliary roller abuts against the front surface of the rail.

10. The main body comprises a second auxiliary roller having an axis along the shaft portion of the main body gear, The measuring device according to any one of claims 1 to 9, wherein, in the positional relationship when the main body is attached to the rail, the second auxiliary roller abuts against the back surface of the rail.

11. The main body is equipped with a third auxiliary roller having an axis that intersects the shaft portion of the main body gear, The measuring device according to any one of claims 1 to 10, wherein, in the positional relationship when the main body is attached to the rail, the third auxiliary roller abuts against the upper surface of the rail.

12. The measuring device according to any one of claims 1 to 11, wherein the main body is divisible into a first unit having the main body gear and a second unit having the Pitot tube.

13. The first unit has a plurality of pins protruding from the side opposite to the main gear, The measuring device according to claim 12, wherein the second unit has a plurality of holes corresponding to the plurality of pins.

14. The measuring device according to any one of claims 1 to 13, An upper frame that holds the upper ends of multiple reed feathers, A reed for an air jet loom, comprising a sub-nozzle for injecting air into the weft thread path formed on the front surface of the plurality of reed fins.

15. A method for adjusting a sub-nozzle, comprising using the measuring device described in any one of claims 1 to 13, and adjusting the sub-nozzle based on the measurement results obtained by the measuring device.

16. A method for adjusting a sub-nozzle according to claim 15, comprising adjusting at least one of the angle and arrangement of the sub-nozzle.

17. The method for adjusting a sub-nozzle according to claim 15 or 16, wherein the measurement results are displayed on a portable terminal located outside the measuring device.

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