JPH0318526Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Industrial Application Field) The present invention is designed to improve the pressure response of intermittent supply of jet air supplied from a nozzle in an air jet room where weft insertion is carried out by making the weft fly in the weft guide space using jet air. This invention relates to an improved air supply device. (Prior Art) As is well known, an air jet loom is a weft guide passage formed by deformed reeds or guide pieces arranged in parallel on a slay, by means of an air flow injected from a main nozzle provided on the slay. A conveying air flow is formed and the weft is placed on the conveying air flow to insert the weft, or sub-nozzles provided on the slay are arranged at appropriate intervals on the sides of the weft guide passage, and the weft is inserted from the main nozzle. Weft insertion is performed while accelerating the weft yarn by jet air that is supplied to the weft yarn guide passage one after another from sub-nozzles as the weft yarn jetted into the guide passage flies, and the main nozzle The sub-nozzle intermittently supplies air into the weft guide passage depending on the flying position of the weft. These main nozzles and sub-nozzles are supported by Slay support rods on a rocking shaft that is centered on a rotational axis that extends in the longitudinal direction of the machine frame of the air jet room, and is rotated by a drive unit to the center of the rocking shaft. A pressurized air supply source that supplies pressurized air to the main nozzle or sub-nozzle, and the pressurized air supply source is disposed on a sleigh that performs a swinging motion about an axis, together with a deformed reed or a guide piece. A solenoid valve for intermittently injecting air from the nozzle is usually disposed at a fixed part of the machine frame 200 to 300 mm away from the sley. FIG. 6 shows a main nozzle in which a large number of guide pieces 6 are arranged in a row on the upper surface of the slay 3 on the shed side of the reed 4, a weft guide passage is formed by the guide pieces 6, and the weft yarn 8 is ejected into the weft guide passage. 5 and sub-nozzles 7 which are arranged at appropriate intervals and eject air into the weft guide passage are arranged on the upper surface of the slay 3, and installed in the machine frame (not shown) of the air jet room in the longitudinal direction. The slay 3 is fixed by a slay support rod 2 to a locking shaft 1 which is rotatably supported around an extending central axis. This shows a freely movable air jet room, but conventionally, as shown in the figure, air tanks 10, 10 connected to an air supply source were fixed to a fixed part of the machine frame of the air jet room, and the input port a solenoid valve 9a for the main nozzle that communicates with the air tank 10, and solenoid valves 9b, 9c, 9 for the sub nozzles that communicate each input port with the air tank 10.
d and 9e are attached to the upper surface of the air tank 10 whose longitudinal direction extends over the entire weaving width of the air jet loom, and the output ports of each electromagnetic valve 9a, 9b, etc. are connected to the main nozzle via a flexible tube 13. 5. It was connected to each sub-nozzle 7. In such a configuration, each nozzle 5, 7 and each solenoid valve 9a, 9b,
Since the distance with 9c etc. is 200 to 300 mm,
The length of the flexible tube 13 is at least longer than this interval, and the tube is designed to withstand the above-mentioned rocking motion. (Problems to be solved with the invention) In the air jet room, the main nozzle 5 must supply air at a sufficiently high air pressure from its injection port 14 each time a new weft is inserted into the weft guide path. No. Also, sub nozzle 7
While the tip of the weft yarn flies in the section of the weft guide passage where air for conveyance is supplied by the sub-nozzle 7, the bending of the tip of the weft is minimized, the knots at the tip of the yarn are eliminated, and the tip of the weft is In order to prevent fabric defects due to non-arrival, the injection timing must be set so that conveying air is supplied at a sufficiently high air pressure from the injection port 15 immediately before the weft tip reaches the section. That is, the air injection from the main nozzle 5 and the sub nozzle 7 must supply conveying air of sufficiently high pressure to the weft guide passage intermittently and at accurate timing. However, in the prior art, the solenoid valves 9a, 9b, 9c, 9d, 9e, etc. that perform intermittent air supply are not connected to the nozzles 5, 7, which are undergoing rocking motion.
The flexible tubes 13 are arranged at regular intervals on the upper surface of the air tanks 10 that extend across the entire weaving width below the slay 3, which is 200 to 300 mm apart, and each solenoid valve and nozzle are connected by a flexible tube 13. As shown by the broken line in Figure 7, even if air is supplied with a rectangular pulse-like pressure waveform at a set pressure P ₁ and a set time T ₁ , the pressure waveform at the nozzle injection port will be affected by the piping capacity and length of the pipe. As shown by the solid line, the ejection pressure P ₂ is lower than the set pressure P ₁ due to pressure loss, and it becomes a trapezoidal waveform with a rise delay time T ₂ and a fall delay time T ₃ until reaching the ejection pressure, and especially the falling response. There was a considerable delay. Therefore, when setting the timing of air injection from each nozzle, it is necessary to always consider the delay in the rise and fall of the air pressure at the nozzle injection port. That is, in the main nozzle 5, when the air pressure is sufficiently increased after the injection of conveying air is started, the weft gripping device, which had been closed until then, must be opened and the insertion of the weft 8 must be started. Slay 3 downstream of main nozzle 5
In the sub-nozzle 7 located first at the top, the first group of guide pieces 6 is activated by the solenoid valve 9b almost simultaneously with the start of air supply to the main nozzle 5 by the solenoid valve 9a.
The supply of air for conveyance is started within the section of the weft guide path formed by
Before reaching the section of the guide piece 6 of the group, it is necessary to sufficiently increase the pressure of the air injected into the section, and then the solenoid valve 9b for the sub-nozzle of the second group and subsequent groups is activated in accordance with the flight of the weft yarn 8. , 9c, 9d, 9e, etc., are activated in sequence, and these sub nozzles 7, 7...
It is necessary to set the timing of the injection so that the tip of the weft passes through an area where the pressure of the air injected from ... is sufficiently high. Moreover, since the flying speed of the weft differs depending on the position of the weft guide passage in the weft insertion direction, the solenoid valve 9 that supplies air to each sub-nozzle 7
The setting of injection timings such as b, 9c, 9d, and 9e was complicated. In addition to this, if the rise of the air pressure injected from the injection port of each nozzle is slow, the air will be blown wastefully until the pressure is sufficiently increased, and if the fall of the pressure is slow, the weft threads will be Even after reaching the end of the width, air continues to be blown, increasing the amount of air consumed. Furthermore, the slow rise and fall of pressure means that unnecessary air is allowed to act on the weft for a long time before weft insertion and after weft insertion, which causes untwisting of the yarn and causes breakage of the weft yarn. It was becoming. (Means for solving the problem) The present invention increases the rising and falling pressure response speed of the air pressure that is ejected from the injection port of the nozzle that supplies conveying air into the weft guide passage in the air jet room. The purpose of this is to improve the running stability of the weft yarn and reduce the amount of air consumption. In order to achieve the above object, the present invention includes a rocking member that is provided with a reed and is movably supported on a base by a rocking shaft, at least one nozzle that supplies air for conveyance for weft flight, A solenoid valve includes a pressure air supply source, a valve body that opens and closes an air passage connecting the nozzle and the pressure air supply source, and a solenoid that operates the valve body, and the solenoid valve is connected to the swinging member. By disposing the valve body at a position close to the nozzle at the top and arranging the moving direction of the valve body parallel to the rotation center axis of the locking shaft, the pressure response of the conveying air jetted from the nozzle can be improved. It was designed to improve the situation. The solenoid valve according to the present invention may be assembled into a nozzle base portion to which the nozzle is attached to a swinging member, or attached to or incorporated into a slay to which a reed and a nozzle are mounted in the swaying member, or mounted on the rocking shaft or the sley to a rocking shaft. The nozzle may be attached to or incorporated into a member to be fixed to the sled, and the nozzle may be placed on the slay near one end of the sled so as to convey the conveying air along with the weft throughout the length of the weft insertion. Alternatively, the nozzles may be arranged along the reed at predetermined intervals and sequentially eject conveying air as the weft yarns fly. (Function of the invention) According to the invention, the electromagnetic valve that opens and closes the air passage connecting the pressure air supply source and the nozzle is provided on the swinging member provided with the nozzle at a position close to the nozzle. The air capacity and length of the passage from the valve to the injection port of the nozzle can be made as short as possible, and the centrifugal force caused by the swinging of the swinging member does not affect the valve body of the solenoid valve, so the nozzle This increases the pressure response speed of the rise and fall of the ejection pressure at the injection port. (Embodiment of the invention) FIG. 1 is a cutaway front view of essential parts illustrating a first embodiment of the invention on a single air jet room. In the figure, the locking shaft 1, sley support rod 2, sley 3, and reed 4 are the same as those in the conventional air jet room shown in FIG. As shown in FIGS. 4 and 5, which will be described later, the guide piece 6 is made of a thin plate material, and its thickness direction is aligned with the weft insertion direction, so that it is placed on the upper surface of the sleigh 3 on the shed side of the reed 4. A large number of through holes 16 are arranged in parallel in the upper end of the holes 16 to form weft guide passages.
It is of a known type in which a weft outlet 17 for taking out the weft 8 inserted through the through-hole 16 into the shed of the reed 4 is connected, and the lower end thereof is set on a nozzle base 18. On the nozzle base 18, thin tubular sub-nozzles 7 are installed at approximately equal intervals, one for every several or ten or so guide pieces 6. ), the nozzle base 18 is divided into units, and the nozzle base 18 is fitted into a groove 19 formed on the upper surface of the slay 3 in the weft insertion direction and fixed. Each sub nozzle 7 has a guide piece 6
It is arranged between the guide pieces 6 that are parallel to each other at the position corresponding to the weft outlet 17 of The distribution channel 20 is connected to the distributing path 20 provided therein. Nozzle base 18
An air inlet 2 communicating with the distribution passage 20 is provided at the bottom of the
1 is formed. The air tanks 10, 10 are provided at a fixed portion of the machine frame (not shown) in the air jet room, as in FIG. The present invention, as indicated by the symbol A in FIG.
A mode in which the solenoid valve 9 is installed in a nozzle base for fixing the main nozzle 5 or sub nozzle 7 to the slay 3, or as shown by reference numeral B, the solenoid valve 9 is attached to a surface such as the bottom surface of the slay 3, Furthermore, as shown by symbol C, the solenoid valve 9 is installed on the outer peripheral surface of the locking shaft 1 or between the locking shaft 1 and the Sley 3 like the Sley support rod 2. There is a mode in which it is attached to or incorporated into a member. In the embodiment A, the capacity of the air passage between the solenoid valve 9 and the nozzle is zero or extremely close to zero, and the pressure response of the nozzle is extremely good. On the other hand, since the solenoid valve is built into the nozzle base, there are some design restrictions, and since it is attached to a large part of the swinging radius of the swinging member, it is most affected by centrifugal force and acceleration due to swinging motion. Therefore, it is necessary to make it more compact. In the embodiment B, the solenoid valve 9
The capacity of the air passage between the and the nozzle is slightly increased compared to the embodiment A, and the pressure response is slightly lower, but the maintenance of the solenoid valve is better, and the shape of the solenoid valve is almost free from restrictions. do not have. In the embodiment C, the capacity of the air passage between the solenoid valve 9 and the nozzle is increased compared to the embodiment A, and the pressure response is slightly lower than in the embodiment B, but the maintenance of the solenoid valve is is even better than the embodiment B above, and since the solenoid valve is attached to a part of the swinging member with a small swing radius, the force received by centrifugal force and acceleration due to swinging motion is reduced, and the durability of the solenoid valve is improved. At the same time, the moment of inertia due to the swinging of the swinging member is reduced, and less power is required for swinging the swinging member. Each electromagnetic valve 9 includes a main shaft valve that controls opening and closing of an air passage, a movable member 31 consisting of a plunger made of a ferromagnetic material fixed to the main shaft valve, and an insulated bobbin made of an insulating material. A solenoid 32 made of a coil of copper wire wound, a core made of a ferromagnetic material fixed in the axial direction in the center hole of a bobbin, and a solenoid holder made of a ferromagnetic material that houses the solenoid 32. and air inlet 2
1. A valve housing communicating with the air outlet 22 to form a valve chamber for accommodating the main shaft valve, and a return spring disposed within the valve housing, and when current is passed through the coil, the solenoid holder, core and A magnetic circuit is formed between the plungers to generate an attractive force between the plungers and the core,
Move the plunger into the center hole of the bobbin along its center axis against the elasticity of the return spring,
The main shaft valve is moved together with the plunger to communicate the input port 33 and the output port 34 of the valve housing, and when the current is cut off, the movable member 31 consisting of the main shaft valve and the plunger is returned to its original position by the elasticity of the return spring, and the valve housing is opened. Output port 3
4 from the input port 33. In the present invention, when assembling or attaching the solenoid valve according to the embodiments A, B, or C, the movable member 31 of the solenoid valve 9 as shown in FIG.
The operating direction of the rocking shaft 1 is arranged parallel to the axial direction of the rocking shaft (rocking shaft 1) of the rocking member. In addition, when arranging the solenoid valve, the movable member 3 of the solenoid valve 9
A mode in which the operating direction of the movable member 31 of the solenoid valve 9 is arranged in the circumferential direction with respect to the swing axis, and a mode in which the operating direction of the movable member 31 of the solenoid valve 9 is arranged in the radial direction with respect to the swing axis. Conceivable. When the solenoid valve is attached to the swinging member as described above, centrifugal force and acceleration act on the movable member of the solenoid valve due to the swinging of the swinging member. In an embodiment in which the movable member 31 is disposed in the radial direction with respect to the swing axis, centrifugal force acts on the movable member 31 as an inertial force, and swing acceleration acts on the movable member 31 as a frictional force.
Furthermore, in an embodiment in which the movable member 31 is disposed in the circumferential direction with respect to the swing axis, the centrifugal force acts as a frictional force, and the acceleration due to the swing of the swing member moves the movable member 31 in the direction of its movement. It acts as an inertial force that causes the object to move. In the case of the present invention in which the movable member 31 is disposed parallel to the swing axis, both centrifugal force and swing acceleration act as frictional force on the movable member 31. Here, the weight of the movable member is 12.5g, the maximum acceleration in the circumferential direction at the position of the movable member on the swinging member is 30G (top position of the sleigh), the maximum angular velocity at this position is 20rad/sec, and the swinging radius 180mm,
When calculating the coefficient of friction between the movable member and its supporting member as 0.15, the effects on the movable member due to centrifugal force and rocking acceleration due to rocking motion are as shown in the following table. least affected.

[Table] (Example) Fig. 2 shows a cross section of the main part of the first embodiment in which the electromagnetic valve 9 to be assembled to the main nozzle 5 of the present invention is implemented in the mode A described above as shown in Fig. 1. show. In FIG. 2, the movable member 31 of the solenoid valve 9 is
A main shaft valve 36 made of synthetic resin and equipped with a valve body 35 having a truncated conical surface, and a plunger 37 made of ferromagnetic material are attached to both ends of a plunger pin 38 made of synthetic resin, which is a non-magnetic material. It is connected and fixed. The solenoid 32 is formed by winding a coil 40 of insulated copper wire around a hollow cylindrical bobbin 39 made of an insulating material.
A movable member 31 is slidably inserted into the center hole 9 in the axial direction thereof. Further, a hollow cylindrical core 41 made of a ferromagnetic material is fixed to the center hole of the bobbin 39 on the side of the main shaft valve 36 of the movable member 31, and a plunger pin 38 of the movable member 31 is fixed to the center hole of the core 41. It is slidably inserted. solenoid 3
2 and a solenoid holder 42 formed in a box shape from a ferromagnetic material to cover the outer periphery of the core 41. A stopper 43 made of rubber is fixed to the end surface of the solenoid holder 42 on the opposite side from the core 41. One limit of axial movement of 37 is defined. The solenoid holder 42 is connected to the nozzle base 22 of the main nozzle 5 fixed to the top surface of the slay 3.
The center axes of the bobbin 39 and the core 41 are fixed parallel to the center axis of the locking shaft 1 (not shown), and the nozzle base 22 is passed through the center axis coaxially with the center axes of the bobbin 39 and the core 41. Insert the main shaft valve 36 into the stepped hole 44 formed by
A connecting portion of the main shaft valve 36 with the plunger pin 38 is fitted into the small diameter portion of the stepped hole 44 and is slidably supported therein, and a valve cap having a U-shaped cross section is fitted into the opening of the large diameter portion of the stepped hole 44. 45 are hermetically fitted and fixed, and the end of the main shaft valve 36 facing the valve cap 45 in the axial direction is slidably supported on the inner peripheral surface of the valve cap 45, and the end of the main shaft valve 36 is slidably supported on the inner peripheral surface of the valve cap 45. A return spring 46 formed in a coil shape is interposed in a compressed state between the valve cap 45 and the valve cap 45, and its elastic force acts in the direction of the center axis of the bobbin 39 and the core 41. In the large diameter portion of the stepped hole 44 of the nozzle base 22, there is a valve body approximately in the center between the stepped portion and the valve cap 45, the outer diameter of which is larger than the outer diameter of the connecting portion with the plunger pin 38 of the main shaft valve 36. An annular valve seat 47 having an inner diameter smaller than the outer diameter of the valve body 35 is formed concentrically protruding from the inner wall thereof at right angles to the axial direction, and the truncated conical surface of the valve body 35 is pressed against the valve seat by the elastic force of the return spring 46. 47 is seated. The input port 33 and the output port 34 are formed in the nozzle base 22 and each have a stepped hole 4.
The output port 34 also serves as the air inlet 21 of the main nozzle 5 and is connected to the injection port 1 of the main nozzle 5.
4. As is clear from the above, in this embodiment, the valve housing of the solenoid valve 9 is connected to the nozzle base 2 of the main nozzle 5.
2 also serves as the nozzle base 22, and a part of the solenoid valve 9 is incorporated into the nozzle base 22. The main nozzle 5 is fixed to the upper surface of the sley 3 by its nozzle base 22, and the input port 33 of the nozzle base 22 has a flexible tube 13 that is inserted into a through hole 48 formed in the sley 3 and has one end fixed to the air tank 10. The cylindrical part at the other end is fixed, and the input port 33 is connected to the air tank 10, and the coil 4 of the solenoid 22 is connected to the input port 33.
0 is connected to a lead wire 50 inserted into a through hole 49 drilled in the sleigh 3, and connected to a power source via a switch (both not shown) in the same manner as in the prior art. This embodiment corresponds to one in which a solenoid valve 9 is incorporated in a position of a nozzle base 22, which is conventionally formed to fix a main nozzle 5 to a sley 3. 36 and the plunger pin 38 are made of resin, and in order to reduce the sliding resistance of the main shaft valve 36, the air seal, which was previously done with a rubber ring, is fitted and fitted, and the coil 4
Conventional commercially available solenoid valves have been improved by optimizing the coil wire diameter and number of turns to improve the rise of current when current flows through zero. According to this embodiment, when a valve opening signal is input to the solenoid valve control circuit at the timing of starting weft insertion in the air jet room, a current flows through the coil 40, and a magnetic circuit is formed between the solenoid holder 42, the core 41, and the plunger 37. is formed, a suction force is generated between the plunger 37 and the core 41, the plunger 37 moves toward the core 41 against the elasticity of the return spring 46, and the valve body 35 of the main shaft valve 36 Since it is separated from the seat 47, the constant pressure air supplied to the input port 33 from the air tank 10 passes through the output port 34 to the air inlet 2.
1 to the main nozzle 5, and is injected from the injection port 14. Next, when a valve closing signal is input to the solenoid valve control circuit at the end of weft insertion, the current flowing through the coil 40 is cut off, and the attractive force between the plunger 37 and the core 41 disappears.
The main shaft valve 36 returns to its original position due to the elasticity of the return spring 46, and its valve body 35 seats on the valve seat 47, cutting off communication between the input port 33 and the output port 34, and supplying air to the main nozzle 5. will be stopped. In this embodiment, the output port 3 of the solenoid valve 9
4 also serves as the air inlet 21 of the main nozzle 5 located directly above, so that the passage capacity between the output port 34 and the air inlet 21 is zero, so that the ejection pressure at the injection port 14 of the main nozzle 5 is reduced. The rise and fall pressure responsiveness is extremely good as shown by the solid line in Fig. 3, and the jet pressure at the injection port 14 instantly reaches the set pressure P shown by the dashed-dotted line when current is supplied to the coil 40. ₁ and when the current supply to the coil 40 is cut off, the ejection is completely stopped with an extremely short fall delay. When compared with the pressure response diagram of the conventional method (see Fig. 7) shown in broken lines for reference in Fig. 3, the solenoid valve 9
output port 34 and air inlet 2 of main nozzle 5
The difference in pressure loss, rise delay and fall delay characteristics due to the difference in passage capacity between the Even if the weft is released at the same time as the air is ejected from the main nozzle 5 by the insertion start timing signal, the tip of the weft can be conveyed by the ejected air with sufficiently high ejection pressure, which is not necessary in the conventional method. This eliminates the need to start air injection from the main nozzle 5 prior to the weft insertion start timing signal, and eliminates wasteful blowing after weft insertion, which conventionally occurred before weft insertion and after weft insertion. Spray breakage due to untwisting of the weft is almost eliminated, stabilizing weft insertion and reducing air power consumption by 20 to 30%. In addition, in this embodiment, since the operating direction of the movable member of the solenoid valve is arranged parallel to the locking shaft 1, it is not affected by the inertial force due to centrifugal force or acceleration as shown in the table above, and is not affected by the frictional force. The operation of the solenoid valve is stable because there is little space, and since the solenoid valve 9 is incorporated into the nozzle base, which was conventionally provided only for fixing the main nozzle 5, space is used effectively and the design is more compact. has been achieved. FIG. 4 shows a main part of a second embodiment of the electromagnetic valve 9 to be assembled to the sub-nozzle 7 of the present invention, which is implemented in the embodiment B shown in FIG. 5 is a sectional view taken along a plane perpendicular to the weft insertion direction. The nozzle base 18 and the base of the reed 4 are arranged in a groove 19 on the upper surface of the slay 3 with their longitudinal directions aligned with the weft insertion direction, and a rod-shaped auxiliary member is provided in the remaining space of the groove 19. 23 is tightly fitted to fix the nozzle base 18 and the reed 4 to the upper surface of the slay 3. The solenoid valve 9 has a structure in which a stepped hole 44 is formed in the valve housing 51, and the main shaft valve 36 of the movable member 31 is inserted into the stepped hole 44. 9 has a configuration in which the nozzle base 22 is also used as a valve housing, the only difference is that an independent valve housing 51 is provided and the solenoid holder 42 is fixed to this, and the remaining configuration is the same as that of the solenoid valve. Same as 9.
Therefore, the same parts are given the same reference numerals and the description thereof will be omitted. The valve housing 51 has a flat portion formed on its upper surface, and is fixed to the lower surface of the sley 3 by the flat portion. A passage 52 communicating with 34 is formed. Note that between the lower surface of the nozzle base 18 and the bottom surface of the concave line 19 of the slay 3, and between the lower surface of the slay 3 and the upper surface of the valve housing 51, there are the air inlet 21 of the nozzle base 18 and the passage 52, and the passage 52 and the valve housing. A ring-shaped rubber seal 53 is interposed between each input port 51 and the input port 34 for air sealing. In the second embodiment, the guide piece 6 has a through hole 16
It is made of a thin plate-like material which communicates with a weft outlet 17 for taking out the weft from the through hole 16 to the shed of the reed 4, and the thin tubular sub-nozzle 7 has a side edge of the through hole One or more injection ports 15 are drilled at positions corresponding to the parts, and pressurized air supplied from the air inlet 21 of the nozzle base 18 through the distribution path 20 is distributed from the injection ports 15 in parallel as is known. Air is injected into the weft guide path formed by the through holes 16 of the guide pieces 6 in the weft insertion direction and in the direction toward the back wall facing the through holes 16 of the plurality of downstream guide pieces 6. do. Therefore, the tip of the weft yarn flying in the weft guide path is accelerated by the air jetted out from the injection port 15 of the sub-nozzle 7 and made to fly along the weft guide path, and the output port of the electromagnetic valve 9 34 and the air inlet 21 of the nozzle base 18 is only the volume of the passage 52 formed in the slay 3, so it is about 6% of the passage volume of the conventional method, and the volume of the passage between the air inlet 21 of the sub-nozzle 7 The response time for the rise and fall of the ejection pressure is the same as in the first embodiment.
The time has been reduced by 40 to 50%, and the need for air injection, which was performed in advance of the arrival of the weft yarn in the conventional method in consideration of the delay in start-up, is almost eliminated. This makes it possible to shorten the response time and reduce the power consumption of air as in the first embodiment. Also in the second embodiment, since the operating direction of the movable member 31 of the solenoid valve 9 is arranged parallel to the rotation center axis of the locking shaft 1,
Like the first embodiment, it is not affected by centrifugal force or inertial force due to rocking acceleration, and the frictional force is even lower, resulting in excellent durability. Nozzle base 18 shown in the second embodiment of the present invention
Usually, one solenoid valve 9 is arranged for a nozzle base 18 with a length of 200 mm. For example, in an air jet room with a weaving width of 1.6 m, eight solenoid valves 9 are installed on the bottom surface of the slay 3 or on the bottom surface of the slay 3. and the locking shaft 1, and are arranged in parallel in the weft insertion direction, solenoid valves are sequentially opened and closed in accordance with the flight of the weft thread, and air is injected into the weft guide passage sequentially in a relay-like manner. It is something that makes you fly. In such an air jet room, a main nozzle 5 is disposed at one end of the slay 3 and the weft 8 is supplied from the main nozzle 5 to the weft guide path each time the beating is performed. The jet air that is jetted from each sub-nozzle 7 with a high pressure is used only to compensate for a decrease in the conveyance speed of the jet air (weft conveying air) jetted from the main nozzle 5, and when the jet air is jetted from the main nozzle 5. In some cases, the pressure of the ejected air is kept at a level sufficient to supply the weft thread 8 to the weft guide passage, and then the weft thread is conveyed by the ejected air sequentially ejected from the sub-nozzles 7 in a relay manner. Furthermore, in a narrow air jet room, weft insertion may be performed without providing the sub-nozzle 7, using only the air ejected from the main nozzle 5 as air for weft conveyance. (Effect of the invention) In the present invention, there is provided a rocking member which is provided with a reed and is swingably supported on a base by a rocking shaft, and a rocking member which is attached to the rocking member and which rotates in relation to the reeding movement. In an air jet room equipped with at least one nozzle equipped with an injection port for ejecting air for conveyance that causes the weft to fly in the weft direction, the nozzle and a pressurized air supply for supplying air for conveyance to the nozzle. A solenoid valve including a valve body that opens and closes the passage and a solenoid that operates the valve body is disposed in a passage connecting the passage to the power source, and the solenoid valve is arranged such that the direction of movement of the valve body is controlled by the locking shaft. Since the electromagnetic valve is disposed parallel to the axial direction of the central axis of rotation, and the electromagnetic valve is mounted on the electric member and close to the nozzle, there is a connection between the air output port of the electromagnetic valve and the air inlet of the nozzle. The volume of the passage between them can be zero or extremely small, and the pressure of the air jetted from the injection port of the nozzle can be made almost equal to the supply pressure at the air input port of the solenoid valve to reduce pressure loss. In addition, since the centrifugal force or the inertial force of the swinging acceleration caused by the beating motion of the swinging member is not applied to the valve body of the solenoid valve, the ejected air injected from the injection port of the nozzle is When the solenoid valve is activated, the supply pressure is instantaneously raised without any start-up delay, and when the solenoid valve is stopped, air injection is stopped in an extremely short time without a large fall delay. , there is no need to set the timing for inputting the valve opening signal to the solenoid valve control circuit in consideration of the rise and fall delays of the pressure of the conveying air supplied from the nozzle injection port, and the weft opening timing or the weft Conveying air can be injected accurately according to the flight speed of the yarn, and it eliminates wasted air jets that are unnecessary for weft insertion due to delays in the rise and fall of the conveying air pressure. This has extremely practical effects, such as being able to prevent jetting from running out and making stable weft insertion possible. According to experiments, compared to the conventional air jet room, the passage capacity between the air output port of the solenoid valve and the air inlet of the nozzle is reduced by 70 to 100%, so the ejected air at the nozzle injection port is The pressure rise response time has been improved by 50 to 70%, the pressure fall response time has been improved by 30 to 50%, and there is almost no pressure loss in the ejection air pressure at the nozzle injection port, and the air power consumption is 20 to 20%. The above-mentioned practical effects of the present invention were confirmed as the reduction was 30%.

[Brief explanation of the drawing]

Fig. 1 is a cutaway front view of essential parts of an air jet room for explaining an embodiment of the present invention, Fig. 2 is a sectional view of essential parts of the first embodiment of the present invention, and Fig. 3 is a front view of main parts of an air jet room for explaining an embodiment of the present invention.
A diagram showing the pressure response at the injection port of the nozzle in the embodiment, FIGS. 4 and 5 are sectional views of main parts of the second embodiment of the present invention, and FIG. 6 is a slope view of a conventional air jet room. , FIG. 7 is a diagram showing the pressure response at the injection port of a nozzle in a conventional air jet room. In the figure, the following symbols indicate the following parts, respectively. 1... Locking shaft, 2... Slay support rod, 3... Slay, 4, 80... Reed, 5... Main nozzle, 6... Guide piece, 7... Sub nozzle,
9... Solenoid valve, 10... Air tank, 13... Flexible tube, 14, 15... Injection port, 1
8... Nozzle base, 21... Air inlet, 31...
...Movable member, 32... Solenoid, 33... Input port, 34... Output port, 35... Valve body, 3
6...Main shaft valve, 37...Plunger, 39...Bobbin, 40...Coil, 41...Core, 46...
Return spring, 47, 67... Valve seat, 51
...Valve housing.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A rocking member that is provided with a reed and is swingably supported on a base by a rocking shaft, and a weft inserting device that is attached to the rocking member and that is connected to the reed beating movement. at least one nozzle provided with an injection port for ejecting air for conveyance that causes the weft to fly in the direction; a pressurized air supply source for supplying the air for conveyance to the nozzle; The electromagnetic valve comprises a solenoid valve that is mounted in close proximity to each other and includes a valve body that opens and closes a passage connecting the nozzle and the pressurized air supply source, and a solenoid that operates the valve body. An air supply device for an air jet room, characterized in that the direction of movement is parallel to the axial direction of the rotation center axis of the rocking shaft. (2) The air supply device for an air jet room according to claim 1, wherein the solenoid valve is incorporated in a nozzle base portion that attaches the nozzle to the swinging member. . (3) The air supply in an air jet room as set forth in claim 1 of the utility model registration claim, wherein the solenoid valve is attached to or incorporated in a tray to which a reed and a nozzle are attached in the swinging member. Device. (4) The solenoid valve is attached to or incorporated in a rocking shaft of the rocking member or a member fixed to the rocking shaft, as set forth in claim 1 of the utility model registration claim. Air supply device in air jet room. (5) In the air jet room according to claim 1, wherein the nozzle is a nozzle that is located near one end of the reed and blows out conveying air together with the weft yarn. Air supply device. (6) The utility model registration claim 1 is characterized in that the nozzles are arranged in rows along the reed at predetermined intervals and sequentially eject conveying air as the wefts fly. An air supply device in the air jet room according to item 1.