WO2020147512A1 - Dispositif et procédé de réglage de la position d'éjection d'une buse auxiliaire dans un métier à tisser à jet d'air - Google Patents

Dispositif et procédé de réglage de la position d'éjection d'une buse auxiliaire dans un métier à tisser à jet d'air Download PDF

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Publication number
WO2020147512A1
WO2020147512A1 PCT/CN2019/127094 CN2019127094W WO2020147512A1 WO 2020147512 A1 WO2020147512 A1 WO 2020147512A1 CN 2019127094 W CN2019127094 W CN 2019127094W WO 2020147512 A1 WO2020147512 A1 WO 2020147512A1
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WO
WIPO (PCT)
Prior art keywords
nozzle
air
sub
auxiliary nozzle
control device
Prior art date
Application number
PCT/CN2019/127094
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English (en)
Chinese (zh)
Inventor
王安俭
李勇
刘井然
邢相虎
Original Assignee
王安俭
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 王安俭 filed Critical 王安俭
Publication of WO2020147512A1 publication Critical patent/WO2020147512A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3006—Construction of the nozzles
    • D03D47/302—Auxiliary nozzles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D03D47/3073—Detection means therefor
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/369—Communication systems

Definitions

  • the present invention relates to the field of weaving technology, in particular to an equipment and method for adjusting the spray position of an auxiliary nozzle in an air jet loom.
  • the current air jet loom generally includes a main nozzle for jetting weft yarns and a plurality of sub-nozzles arranged along the weft insertion path.
  • the main nozzle sprays compressed air so that the weft yarn is ejected from the main nozzle and travels toward the weft yarn arrival side.
  • the sub-nozzle sprays compressed air within a preset time, so that the compressed air sprayed from the sub-nozzle is used to assist the movement of the weft yarn.
  • the movement of the weft yarn is affected by the spray position of the sub-nozzle. Therefore, it is necessary to adjust the spray position of the sub-nozzle according to the knitting conditions.
  • the injection position of the sub-nozzle in the weft insertion remains constant, that is, the injection position of the sub-nozzle cannot be changed in response to the change of the weaving condition during the weaving operation, and thus cannot be optimized according to the weaving condition. Weft insertion.
  • the invention provides a device and method for adjusting the spray position of an auxiliary nozzle in an air jet loom, which is used to solve the technical problem that the spray position of a sub-nozzle cannot be changed in the weaving process in the prior art.
  • the present invention provides a device for adjusting the spray position of an auxiliary nozzle in an air jet loom, which includes: a weft insertion device, including a main nozzle for spraying weft yarn; and an auxiliary nozzle, including a plurality of sub-nozzles, which spray along the weft yarn
  • the weft insertion control device is electrically connected to the weft insertion device and the auxiliary nozzle, and the weft insertion control device includes a first solenoid valve connected to the main nozzle and a second solenoid valve connected to the sub-nozzle; and auxiliary nozzle control
  • the device is electrically connected to the weft insertion control device, and the auxiliary nozzle control device includes a drive unit for adjusting the height and angle of each sub-nozzle respectively, wherein the weft insertion control device and the auxiliary nozzle control device are both connected to the operating part Connected, the operating part is used to accept external instructions.
  • the drive unit includes a screw mechanism and a rack and pinion mechanism.
  • the rack and pinion mechanism is connected to the sub-nozzle to rotate the sub-nozzle along its axis.
  • the screw mechanism is connected to the rack and pinion mechanism to make the rack and pinion mechanism and the sub The nozzles rise and fall together.
  • the lead screw mechanism includes a lead screw, a slider that is threadedly connected with the lead screw, and a first motor connected to the lead screw.
  • the slider is connected to the rack and pinion mechanism and moves along the axis of the lead screw together.
  • the rack and pinion mechanism includes a second motor and a rack and gear that mesh with each other.
  • the gear is connected to the sub-nozzle, the rack is arranged in the limit slot of the slider, and the rack is connected to the output shaft of the second motor. Connected.
  • the auxiliary nozzle control device further includes a driving controller and a setting unit, the setting unit is signally connected to the operating part, and the driving controller is electrically connected to the first motor and the second motor, respectively.
  • an exhaust valve is provided on the air path between the sub-nozzle and the second solenoid valve, and the exhaust valve is used to remove the airflow remaining in the air pipe.
  • the weft insertion control device further includes an encoder for detecting the rotation angle of the main shaft, a signal generator connected to the encoder, and a weft insertion controller connected to the signal generator.
  • the weft insertion controller is connected to the The first solenoid valve and the second solenoid valve are electrically connected.
  • the weft insertion device further includes a yarn storage roller and a length measurement and storage device.
  • the length measurement and storage device is electrically connected to the weft insertion controller.
  • the weft yarn is separated from the storage roller and passes through the length measurement and storage device. Ejected from the main nozzle.
  • the length measuring and storing device includes an operating drum and a yarn winding arm arranged on the drum.
  • a stopper is arranged on the drum near the main nozzle, and the stopper is electrically connected to the weft insertion controller. .
  • the present invention also provides a method for adjusting the spray position of the auxiliary nozzle in the air jet loom, which is adjusted by using the above-mentioned equipment.
  • the advantage of the present invention is that the weft insertion control device and the auxiliary nozzle control device communicate with each other, so the weft insertion control device sends the change information of the weaving state during the weaving operation to the auxiliary nozzle control device to drive
  • the unit can respond to the above-mentioned changes, so that the jet position of the sub-nozzle can be adjusted during the weaving operation during weft insertion, thereby optimizing the weft insertion.
  • Fig. 1 is a schematic structural diagram of a device for adjusting the spray position of an auxiliary nozzle in an air-jet loom in an embodiment of the present invention
  • Fig. 2 is a front view of the drive unit shown in Fig. 1
  • Fig. 3 is a drive shown in Fig. 1
  • the side view of the unit
  • Figure 4 is a schematic diagram of the three-dimensional structure of the sub-nozzle in an embodiment of the present invention
  • Figure 5 is a cross-sectional view of the sub-nozzle shown in Figure 4
  • Figure 6 is a cross-sectional view of the exhaust valve in an embodiment of the present invention
  • Figure 7 is a cross-sectional view of the exhaust device shown in Figure 6.
  • the present invention provides a device for adjusting the spray position of an auxiliary nozzle in an air jet loom, including a weft insertion device 1, an auxiliary nozzle 2, and a weft insertion control device 3. And auxiliary nozzle control device 4.
  • the weft insertion device 1 includes a main nozzle 11 for jetting weft yarns, and the auxiliary nozzle 2 includes a plurality of sub-nozzles 21, which are arranged side by side along the jetting direction of the weft yarns. Specifically, the sub-nozzle 21 is supported by a support body so that its spray position is adjustable.
  • the supporting body is a special nozzle holder 28 of the sub-nozzle 21, which is fixed on the reed holder 29, wherein the reed support is used to support the reed (the reed is not shown in the figure).
  • the weft insertion control device 3 is electrically connected to the weft insertion device 1 and the auxiliary nozzle 2 respectively.
  • the weft insertion control device 3 includes a first solenoid valve 31 connected to the main nozzle 11 and a second solenoid valve 32 connected to the sub-nozzle 21.
  • the first solenoid valve 31 and the second solenoid valve 32 are both connected to a pressure regulator.
  • the pressure regulator adjusts the pressure of the compressed air in the air source 7 to a pressure suitable for weft insertion, so that the compressed air passes through the first solenoid valve 31.
  • the second solenoid valve 32 is supplied to the main nozzle 11 and the sub nozzle 21.
  • the auxiliary nozzle control device 4 is electrically connected to the weft insertion control device 3, and includes a driving unit 41 for adjusting the height and angle of each sub-nozzle 21 respectively.
  • Both the weft insertion control device 3 and the auxiliary nozzle control device 4 are connected with the operating part 6, and the operating part 6 is used for receiving external commands.
  • the operation part 6 may be an input/setting display.
  • the adjustment target of the driving unit 41 is at least one of the aforementioned sub-nozzles 21.
  • the specific implementation of adjusting the height and angle of each sub-nozzle 21 is as follows: the driving unit 41 includes a screw mechanism 42 and a rack and pinion mechanism 43.
  • the rack and pinion mechanism 43 is connected to the sub-nozzle 21 so that the sub-nozzle 21 Rotating along its axis, the screw mechanism 42 is connected to the rack and pinion mechanism 43, so that the rack and pinion mechanism 43 and the sub-nozzle 21 are raised and lowered together.
  • the screw mechanism 42 includes a screw 421, a slider 422 that is threadedly connected to the screw 421, and a first motor 423 connected to the screw 421.
  • the slider 422 is connected to a rack and pinion.
  • the mechanism 43 is connected and moves along the axis of the screw 421 together.
  • the rack and pinion mechanism 43 includes a second motor 433 and a rack 431 and a gear 432 that mesh with each other.
  • the gear 432 is connected to the sub-nozzle 21.
  • the rack 431 is disposed in the limiting groove of the slider 422.
  • the rack 431 and the second motor The output shaft of 433 is connected.
  • the auxiliary nozzle control device 4 further includes a driving controller 44 and a setting unit 45.
  • the setting unit 45 is signally connected to the operating part 6 and the driving controller 44 is electrically connected to the first motor 423 and the second motor 433, respectively.
  • the drive controller 44 can respond to the injection position where the sub-nozzle 21 as the adjustment target is in the weaving state.
  • the setting unit 45 can set adjustment values, such as setting different standard values for different countries, or the type of weft yarn, the weaving structure, and the rotation speed of the loom.
  • the sub-nozzle 21 includes a nozzle 22 and a nozzle seat 23.
  • the nozzle tube 22 is provided with an upper cavity 24 and the nozzle seat 23 is provided with a lower cavity 25.
  • the upper end of one side of the nozzle 22 is provided with a spray hole 26, and the lower end of the nozzle 22 is inserted into the lower cavity 25 of the nozzle 23 from the top of the nozzle 23, and an air inlet 27 is also provided at the bottom of the nozzle 23,
  • the spray hole 26, the upper cavity 24, the lower cavity 25 and the air inlet 27 are communicated with each other, and an air inlet 27 is provided at the bottom of the upper cavity 25 in the nozzle 22.
  • the nozzle 22 includes an upper section 221, a transition section 222, and a lower section 223.
  • the lower section 223 is cylindrical, and the lower section 223 is installed in the nozzle seat 23 by resin glue.
  • At least one side of the top of the upper section 221 forms an inclined surface, and the spray hole 26 is opened on the inclined surface.
  • the nozzle hole 26 is configured as a tapered hole with a large inside and a small outside.
  • a layer of polytetrafluoroethylene is also coated on the inner surface of the nozzle 22, the outer surface of the transition section 222 and the upper section 221, and the hole wall of the nozzle hole 26.
  • the present invention When the present invention is in use, after the airflow enters the nozzle seat 23, because the bottom opening of the nozzle tube 22 is small, it will first be accumulated in the nozzle seat 23 in front of the nozzle tube 22 and then enter the nozzle tube 22.
  • the entire upper cavity 25 is sprayed with polytetrafluoroethylene, which has a high surface finish, which greatly reduces the resistance loss of air flow.
  • the spray hole 26 When the airflow enters the transition section 222, because the cavity in the transition section 222 shrinks and becomes smaller, the effect of pressurization is achieved.
  • the spray hole 26 performs the third Secondary pressurization, and because the airflow is also accumulated before entering the nozzle 22, the pressurization effect is better. Through one accumulation and three times of pressurization, the energy consumption is smaller, and the flying speed of the weft can be increased.
  • the upper section 221 of the nozzle 22 is relatively thin, and the surface is coated with polytetrafluoroethylene, which greatly reduces the friction between the nozzle 22 and the yarn and further improves the flying speed of the weft yarn.
  • an exhaust valve 5 is provided on the air path between the sub-nozzle 21 and the second solenoid valve 32, and the exhaust valve 5 is used to remove the airflow remaining in the air pipe.
  • the second solenoid valve 32 is a two-position three-way solenoid valve.
  • the exhaust valve 5 includes a valve body 51 and an exhauster 52.
  • the valve body 51 is provided with a cavity 53, which is connected to the first air inlet 531, respectively.
  • the first air outlet 532, the second air inlet 533 and the second air outlet 534 are in communication, and the exhauster 52 is arranged in the cavity 52.
  • the first air inlet 531 is connected with an air hole of the second solenoid valve 32
  • the second air inlet 533 is connected with another air hole of the second solenoid valve 32
  • the first air outlet 532 is connected to the sub-nozzle 21 through the air pipe. Connected.
  • An exhaust sleeve 521 is provided inside the exhauster 52, and a core 523 is provided inside the exhaust sleeve 521. Both the exhauster 52 and the exhaust sleeve 521 are provided with an air inlet and an air outlet. A nozzle 522 is provided at the air outlet of the, and the core 523 is provided in the nozzle 522.
  • the core 524 of the core 523 is an elongated hole, and the cavity formed between the exhaust sleeve 521 and the core 523 communicates with the air outlet of the exhaust 52 through the gap between the nozzle 21 and the core 523; One end of the 523 is in communication with the cavity 52, and the other end of the core 523 is in communication with the air outlet of the exhauster 52.
  • the first air inlet 531 and the first air outlet 532 form the air path of the auxiliary jet air flow through the cavity 52
  • the second air inlet 533 and the second air outlet 534 form the exhaust air flow generating channel through the nozzle 522
  • the auxiliary jet The air path of the air flow and the generation channel of the exhaust air flow are connected by the core 524 of the core 523.
  • the diameter of the first air inlet hole 531 is more than two times larger than the diameter of the second air inlet hole 533; when the auxiliary jet airflow is generated, the air consumption is large; when the exhaust airflow is generated, the air consumption is small.
  • the time control system of the second solenoid valve 32 is divided into three control time periods.
  • the first section is high-pressure excitation to speed up the starting speed of the valve; the second section is maintained at low pressure to keep the valve open; the third section is switched at lower pressure.
  • the working time of the exhaust valve 5 is more than twice longer than the working time of generating the auxiliary jet flow.
  • the working principle of the exhaust valve 5 of the present invention is as follows: the airflow enters the exhauster 52 from the second air inlet 533, the airflow enters the gap between the exhauster sleeve 52 and the core 523, and the high-pressure airflow passes through the core 523 and The inner flow path between the nozzles 522 flows through the gap between the core 523 and the nozzle 522, and uses the difference between the supply pressure and the ambient atmospheric pressure to generate a high-speed jet airflow, which is directed from the core of the core 523
  • the air flow entering 524 is to discharge the residual air flow in the air path of the auxiliary jet air flow, and then eliminate the residual air flow in the auxiliary jet air pipe.
  • the air resistance can be reduced, the time for the airflow to pass through the air pipe can be shortened, and the outlet velocity of the auxiliary jet airflow can be increased.
  • the response speed of the auxiliary nozzle outlet airflow can be improved, the airflow control force of the auxiliary nozzle can be enhanced, and the high-speed adaptability of the air jet loom can be improved.
  • an exhaust valve 5 can also be provided on the air path between the main nozzle 11 and the first solenoid valve 31, which will not be repeated here.
  • the weft insertion control device 3 also includes an encoder 33 for detecting the rotation angle of the main shaft, a signal generator 34 connected to the encoder 33, and a weft insertion controller 35 connected to the signal generator 34.
  • the weft insertion controllers 35 respectively It is electrically connected to the first solenoid valve 31 and the second solenoid valve 32.
  • the weft insertion device 1 also includes a yarn storage roller 12 and a length measuring and storing device 13.
  • the length measuring and storing device 13 is electrically connected to the weft insertion controller 35.
  • the weft yarn is separated from the yarn storing roller 12 and passes through the length measuring and storing device 13 Then it is ejected from the main nozzle 11.
  • the length measuring and storing device 13 includes an operating drum 131 and a yarn winding arm 132 arranged on the drum 131.
  • the drum 131 is provided with a stopper 133 on the side close to the main nozzle 11, the stopper 133 and a weft insertion controller 35 Electrical connection.
  • a method for adjusting the spray position of an auxiliary nozzle in an air jet loom is adjusted by using the above-mentioned equipment.
  • the spray height position and spray angle position including each sub-nozzle 21 are set in the operation section 6.
  • the signal generator 34 outputs the weft selection signal S1 to the weft insertion controller 35 in each knitting cycle. Based on the signal of the rotation angle of the main shaft obtained from the encoder 33, the weft selection signal S1 is output according to the set weft selection mode.
  • the weft insertion controller 35 selects a weft insertion condition corresponding to the selected weft from a plurality of set weft insertion conditions based on the weft selection signal S1.
  • the weft insertion controller 35 drives the first solenoid valve 31 and the second solenoid valve 32 according to the selected weft insertion condition, thereby performing the insertion of the selected weft yarn.
  • the weft selection signal S1 is output from the signal generator 34 in the period from the end of the weft insertion to the beginning of the next weaving cycle.
  • the weft selection signal S1 from the signal generator 34 is also output to the drive controller 44 in each weaving cycle.
  • the height position control part of the drive controller 44 that is, the screw mechanism 42 reads from the setting unit 45 the setting value of the jet height position corresponding to the selected weft type of each sub-weft; similarly; Specifically, based on the weft selection signal S1, the angular position control part of the drive controller 44, that is, the rack and pinion mechanism 43, reads the setting value of the jet angle position corresponding to each type of weft selected from the setting unit 45.
  • the screw mechanism 42 simultaneously drives each first motor 423 based on the setting value read from the setting unit 45 so that the spray height position of each sub-nozzle 21 is adjustable. Specifically, the screw mechanism 42 determines the deviation between the current set value of the ejection height position and the set value of the ejection height position read from the setting unit 45, and supplies the excitation current to each setting unit so that the first The rotation of the output shaft of a motor 42 corresponds to the angle of the deviation. The rotation of the output shaft of each first motor 423 changes the ejection height position of each sub-nozzle 21 to the set value of the ejection height position read from the setting unit 45.
  • the rack and pinion mechanism 43 performs processing similar to that performed by the screw mechanism 42.
  • the rotation of the output shaft of each second motor 433 changes the ejection angle position of each sub-nozzle 21 to the set value of the ejection angle position read from the setting setting unit 45.
  • a sensor may be provided to detect whether the injection position has been appropriately adjusted to the set injection position. If it is not adjusted to the set position, you can adjust it again.
  • the adjustment method may further include the steps of detecting the spraying position after the spraying position is changed, comparing the detection value obtained as the detection result with the spraying position selected according to the knitting condition, and when the detection value and the spraying position are eliminated by the drive unit 41 The deviation between the selected injection positions.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

Un dispositif pour régler une position d'éjection d'une buse auxiliaire dans un métier à tisser à jet d'air comprend un dispositif d'insertion de tramage (1), une buse auxiliaire (2), un dispositif de commande d'insertion de tramage (3) et un dispositif de commande de buse auxiliaire (4). La buse auxiliaire comprend de multiples sous-buses (21) ; le dispositif de commande de buse auxiliaire comprend une unité d'entraînement (41) pour régler respectivement la hauteur et l'angle de chaque sous-buse ; le dispositif de commande d'insertion de tramage et le dispositif de commande de buse auxiliaire sont en communication l'un avec l'autre. Le dispositif de commande d'insertion de tramage envoie des informations de changement d'un état de tissage pendant une opération de tissage au dispositif de commande de buse auxiliaire de telle sorte que l'unité d'entraînement peut répondre aux changements, la position d'éjection de la sous-buse peut être réglée dans une période d'insertion de tramage pendant l'opération de tissage, et l'insertion de tramage est optimisée.
PCT/CN2019/127094 2019-01-17 2019-12-20 Dispositif et procédé de réglage de la position d'éjection d'une buse auxiliaire dans un métier à tisser à jet d'air WO2020147512A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910042697.1 2019-01-17
CN201910042697.1A CN109457371A (zh) 2019-01-17 2019-01-17 用于调节喷气织机中辅助喷嘴的喷射位置的设备及方法

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WO2020147512A1 true WO2020147512A1 (fr) 2020-07-23

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* Cited by examiner, † Cited by third party
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CN109457371A (zh) * 2019-01-17 2019-03-12 王安俭 用于调节喷气织机中辅助喷嘴的喷射位置的设备及方法

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Publication number Priority date Publication date Assignee Title
JPH11229251A (ja) * 1998-02-20 1999-08-24 Nissan Techsys Kk 空気噴射式織機の緯入れ装置
CN102747512A (zh) * 2011-04-20 2012-10-24 津田驹工业株式会社 空气喷射式织机的副喷嘴的喷射角度位置的调整方法和装置
EP2535446A2 (fr) * 2011-06-13 2012-12-19 Tsudakoma Kogyo Kabushiki Kaisha Procédé et appareil de réglage de position d'éjection de buse auxiliaire dans un métier à tisser à jet d'air
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CN109457371A (zh) * 2019-01-17 2019-03-12 王安俭 用于调节喷气织机中辅助喷嘴的喷射位置的设备及方法

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