JP2008063672A - Method for controlling selvedge device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent starting trouble caused by tracking delay of a motor for exclusive use without producing slackness of weft yarns when starting of a loom in the loom equipped with a selvedge device starting operation by idling start accompanying low-speed rotation for preventing weaving bars, and driven by the motor for exclusive use. <P>SOLUTION: A controller for the motor for exclusive use is designed to perform first control for driving in a synchronous driving state to a corresponding main shaft angle during weaving operation, second control for releasing the synchronous driving and keeping the motor for exclusive use in a stopped state, and third control for releasing the synchronous driving and keeping the motor for exclusive use in a driving state of normal rotation. The controller for the motor for exclusive use performs the second control in a step of rotating the main shaft at a low speed, starts the third control during empty weaving operation at latest, and starts the first control during the period of the subsequent empty weaving operation at latest or till a determined period set during from the period after the start of the weaving operation to the completion of one cycle. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a loom that starts operation with a spear idle start of a loom accompanied by a low-speed rotation of a loom main shaft in order to prevent a stop stage, and more specifically, an earring device is synchronized with a low-speed rotation of a main shaft. The present invention relates to drive control of an ear brace apparatus that can reduce problems such as looseness of a weft thread and excessive tightening caused by driving.

  In a weaving loom, every time weft is inserted into a woven fabric, it is cut according to the woven width of the woven fabric. On both sides of the woven fabric, there are ears for preventing fraying of the woven fabric. It is necessary to form an organization. As a mechanism for that purpose, a planetary gear type ear assembly device is widely known. (For example, refer to Patent Document 1.) In this system, two planetary gears are pivotally supported on one sun gear, and each planetary gear is supported by an ear thread bobbin and a yarn guide. The revolving of the planetary gear by driving the gear realizes the opening movement of the ear thread released from each ear thread bobbin, and can twist the ear thread depending on the point of the planetary gear. In order to optimally set the twist direction and the number of the ear threads at this time, a technique of interposing a change gear between the sun gear and the planetary gear as necessary has been proposed. (For example, refer to Patent Document 2.) Since such an ear assembly device must be driven while maintaining a synchronous relationship with the movement of the loom, the ear assembly device and the loom are used as means for realizing the synchronous relationship. The ear assembly device is configured to be driven by a dedicated motor that is provided separately from the loom main shaft motor, and the dedicated motor is driven synchronously with the rotation of the loom main shaft. Is called. (See, for example, Patent Document 3)

  On the other hand, as a technique for preventing the weaving step that occurs when the loom starts, the loom main shaft is rotated in the reverse rotation direction at the start of the loom, and then the loom main shaft is started in the normal rotation direction until the above-mentioned reverse amount is reached. There is known a method of starting a loom called a blanking start with so-called reverse rotation, in which a beating state is made and then weft insertion is started. (For example, refer to Patent Document 4) According to this technology, since weft insertion is started after the beating force is recovered after the idle driving period of the kite after starting the loom, in a transient rotation state at the time of so-called loom starting. It is possible to eliminate the weaving steps caused by the decrease in the hammering force. Such a weaving step prevention technique is also applied to a loom equipped with the above-described ear braiding device driven by a dedicated motor.

  However, in a loom in which the ear assembly device is always driven synchronously with the loom main shaft angle, the ear assembly device and the warp opening device are similarly reversed, for example, when the main shaft is rotated at low speed at the start of idle driving. For this reason, when weaving a highly elastic weft fabric, there is a problem that the weft yarn that has already been woven is not restrained by the warp and the ear yarn due to the reverse rotation, so that the weft yarn is loosened and a so-called fabric defect occurs. is there. In such an ear assembly driven by a dedicated motor, when reversing the loom main spindle at the time of starting the loom, for example, the synchronous control of the special motor is interrupted and the special motor is stopped, and the loom main spindle is It is also conceivable to prevent the loosening of the weft by preventing the opening of the ear thread during the reverse rotation by recovering the synchronous control of the dedicated motor with respect to the main shaft from the time when the rotation is forward by the amount of the reverse rotation. However, according to such an apparatus, when the synchronous drive is recovered after the loom is restarted, the spindle has already been rotated at a high speed. The dedicated motor cannot immediately follow the spindle angle in the high-speed rotation state, and a follow-up delay of the ear assembly device occurs. As a result, immediately after the start of the loom, there is a start-up trouble that causes a weft insertion error due to an ear thread opening defect due to a delay in tracking of the ear assembly device, or the ear tightening of the part woven immediately after start-up is in another part. There are also problems with fabric quality, such as worsening.

In addition, the problem of such tracking delay of the ear setting device is not limited to the planetary gear type ear setting device that is synchronously driven by a dedicated motor as in Patent Document 3. For example, as in an ear assembly device disclosed in Patent Document 5, a thread twist portion for twisting an ear thread and a bobbin retaining device for retaining an ear thread bobbin are configured separately, and the thread twist portion and the bobbin retaining device include This also occurs in a device that is provided with a dedicated motor and that performs an ear thread opening motion (twisting motion) by synchronously driving each dedicated motor in one direction corresponding to the rotation of the loom. Further, when starting the loom, the loom is not limited to the above-described loom that is started with the idle driving start with the reverse rotation, but is the same with the loom that is started with the empty driving with the forward rotation to prevent the weaving step, for example. More specifically, with respect to such an idle driving start with forward rotation, first, the loom (main shaft) is rotated forward at a low speed by a predetermined rotation amount, and then weft insertion is not performed until the loom is rotated by a predetermined rotation amount while starting the loom. The empty weaving operation is executed, and then the weaving operation is started. Therefore, the ear assembly device is rotated forward in synchronization with the main shaft angle until the weaving operation is started, so that excessive twist of the ear thread occurs, in other words, the ear thread has a hump, There is also a problem that the ear tissue is too tight compared to the woven portion.
Japanese Utility Model Publication No. 43-18767 JP 59-47439 A JP-A 63-145446 JP 61-124651 A JP 2002-294532 A

  In this way, for looms that are started by idle driving with low-speed rotation, and equipped with an electric ear assembly device driven by a dedicated motor, weft loosening due to the reverse rotation is prevented, and a dedicated motor is installed. So far, there is no known technology that can eliminate both of the tracking delay in synchronous driving.

  The present invention has been made in view of such circumstances, the object of the present invention is a loom that is started by idle driving start, and a loom including an ear assembly device driven by a dedicated motor. The purpose is to efficiently produce high-quality woven fabric by preventing weft loosening at the start of operation, loom start-up trouble, and ear abnormalities.

Means for solving the problems / effects of the invention

  Therefore, the control method of the ear setting device according to the present invention includes a main controller that controls the driving of the main shaft through the driving motor by the input of the loom operation signal, the ear setting device driven through the dedicated motor, A dedicated motor controller for controlling the driving of the dedicated motor, wherein the main controller rotates the main shaft at a low speed by a first rotation amount in a predetermined direction, and then activates the main shaft to correct the second rotation amount. The present invention is applied to a loom that is moved to a weaving operation with a weft insertion after performing a blank weaving operation for one cycle or more without a weft insertion until it is turned. As a feature of the present invention, the dedicated motor controller determines in advance a first control for driving the dedicated motor in synchronization with the spindle angle, a second control for stopping the dedicated motor, and a dedicated motor. The third control for forward rotation driving according to the drive pattern is made executable, and the dedicated motor controller executes the second control during the process of rotating the main shaft at the low speed, and at the latest performs the empty weaving operation. In some cases, the third control is started and the predetermined time determined in the subsequent empty weaving operation period or the predetermined time determined between the start of the weaving operation and the end of one cycle. The gist of this is to start the control.

  In the above loom, since the weaving operation without weft insertion is performed for one cycle or more after the loom spindle is started, the weft thread is beaten with an increased punching force after weft insertion is resumed. Steps can be eliminated. On the other hand, in the ear assembly device, the weft thread can be restrained by keeping the ear thread closed by turning off the dedicated motor during the process of rotating at low speed. Then, during the empty weaving operation at the latest after the loom is started, the third control is started and the dedicated motor is driven to rotate forward, and then the synchronous driving with respect to the main shaft angle is started from the time when the main shaft angle reaches the synchronous driving angle. Execute. Since such a synchronous drive angle is determined at the latest from the start of the subsequent empty weaving operation period or the start of the weaving operation to the end of one cycle, the dedicated motor is accelerated in preparation for the subsequent synchronous driving. Therefore, compared with the case where the dedicated motor that is in a stopped state is suddenly synchronously driven when the synchronous driving angle is reached as in the conventional device, the follow-up delay of the ear assembly device with respect to the main shaft can be reduced, which has conventionally occurred. It can also prevent fabric quality problems such as weft insertion errors, ear tissue loosening and overtightening.

  As for the low speed rotation of the main shaft executed at the start of the loom operation, either low speed reverse rotation or low speed normal rotation can be considered. More specifically, with respect to the form of reverse rotation at a low speed, the main shaft is reversely rotated at a low speed by a first rotation amount in a predetermined direction, then the main shaft is started and the second rotation amount is set to be substantially the same as the first rotation amount. An empty weaving operation that does not involve weft insertion until the rotation amount is rotated forward is performed for one cycle or more, and then the operation proceeds to a weaving operation with weft insertion. In other words, the first rotation amount is (in other words, The second rotation amount is also appropriately set in consideration of the weaving stage situation. Such a method of starting operation of the loom is referred to as idling start with reverse rotation. According to this operation starting method, it is possible to prevent the weaving step caused by the lack of the beating force after the start-up, and to prevent the weft from loosening and the follow-up delay of the dedicated motor.

  On the other hand, in the mode of normal rotation at low speed, more specifically, the main shaft is rotated in the normal direction at a low speed by the first rotation amount, and then the main shaft is started and the second rotation amount is normally rotated. The weaving operation without a weft insertion is performed for one cycle or more, and then the weaving operation with a weft insertion is performed. The first amount of rotation matches the amount of rotation corresponding to the multiple of the number of repeats of the fabric structure, and is appropriately set corresponding to the strength of the step. It is determined in advance so that the relationship is established. The operation start method of the loom that is started in this way is referred to as idle start with forward rotation. In this case, the weaving operation prevents the weaving step due to the lack of the striking force after the start-up, and the excessive forward rotation of the earring device in the low-speed forward rotation and the empty weaving operation is not performed. Since the forward rotation drive is executed as much as it contributes to the drive, it is possible to prevent over-tightening of the ear tissue (such as a bump due to an over-twisted ear thread), and to prevent the follow-up delay of the dedicated motor. If the follow-up delay of the dedicated motor, that is, the phase delay of the ear assembly device increases, the weft insertion stability immediately after the start of the weaving machine will be affected by the weft insertion error due to the ear thread opening defect, but such a delay can be suppressed. As a result, the operation of the loom becomes more stable.

  Preferably, the dedicated motor controller includes the third motor so that when the predetermined time is reached, the phase of the dedicated motor matches the phase of the synchronous drive state corresponding to the spindle angle during the weaving operation. The control start time and the normal rotation driving amount in the control period are set in advance. As a result, when the dedicated motor that is normally driven after the start of the loom main shaft is switched to the first control, it can be smoothly shifted to the synchronous drive state with respect to the loom main shaft angle.

  The start timing of the third control for starting the forward rotation drive of the dedicated motor may be determined in consideration of the acceleration characteristics of the dedicated motor, and is after the end of the low-speed rotation of the main shaft and within the empty weaving operation period. Can be determined. More specifically, the start time of the second control may be determined to be before or after the empty weave operation start time.

  In the forward rotation drive in the third control, the dedicated motor may be gradually accelerated toward the synchronous speed during the weaving operation, or at a predetermined speed determined to be a value equal to or less than the synchronous speed during the weaving operation. A dedicated motor may be rotated, and any drive mode is included in the present invention.

  More preferably, the dedicated motor controller can execute a fourth control for driving the dedicated motor in a reverse direction, and the dedicated motor controller includes a dedicated motor at the time of the execution of the fourth control. Is set in advance, and the main controller temporarily stops the loom main spindle after the process of rotating the main spindle at a low speed is completed, then starts the main spindle and the dedicated motor controller has the main spindle The fourth control may be executed while the operation is temporarily stopped.

  In the state where the low-speed rotation of the main spindle is finished, the warp is in a state of restraining the weft. Therefore, even if the reverse rotation of only the dedicated motor is executed by the fourth control and the ear thread releases the weft, the warp opening Continues to restrain the weft. Therefore, loosening of the weft does not occur during this period. Then, after the loom is started, the third control of the dedicated motor is executed, and when the synchronous drive angle is reached, the dedicated motor is accelerated in the forward rotation direction in the phase state before the fourth control is executed. In addition, the ear thread opening phase is substantially the same as that in the normal weaving operation, and thereafter, the state is shifted to the synchronous driving state with respect to the main shaft. For this reason, excessive twisting of the ear thread does not occur when the loom is restarted, which is more preferable in terms of fabric quality.

  Hereinafter, specific modes for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows an overall view of the loom viewed from the weaving width direction.

  FIG. 1 shows an overall view of the loom 10. In the loom 10, a plurality of warps 12 are drawn out in a sheet form from the warp beam 14, and are continued to the weaving front 22 through a back roller 16, a plurality of reeds 18 and reeds 20. Further, the warp 12 is inserted through each of the reeds 18 and 18 attached to the plurality of reed frames 19 and opened by the reciprocating motion of the reeds 18 and 18. A weft 46 is inserted into the opening 24 of the warp 12 via a weft insertion device (not shown). The wefts 46 inserted into the weft are struck against the woven fabric 22 by the reed 20 to form a woven fabric 26. Then, the woven fabric 26 reaches the clothing roll 30 through the guide roll 28 from the cloth 22, is sent out by the clothing roll 30 and a pair of press rolls 32, and is wound around the fabric roll 34.

  The scissors 20 and the scissors frames 19 and 19 are driven by a scissor driving device 36 and an opening driving mechanism 38, respectively. The hammering device 36 and the opening drive mechanism 38 are configured by a known mechanism that converts the rotational motion of the main shaft 42 into a desired reciprocating motion, and a predetermined hammering motion and warp opening motion via the hammer 20 and the plurality of hammer frames 19. To do.

  On the other hand, the warp beam 14 is driven via a feed motor (not shown) to feed the warp 12 into a sheet. On the other hand, the clothing roll 30 is driven via a winding motor (not shown), and sends the woven fabric 26 toward the cloth roll 34 in cooperation with the pair of press rolls 32 and 32. During the weaving operation of the loom, the feed motor rotates the warp beam 14 in accordance with a signal output so as to maintain a desired warp tension from a feed control device (not shown), and the take-up motor The winding roll 30 is driven to rotate in accordance with a signal output from the control device to be rotated at a peripheral speed corresponding to the set weft density.

  The loom main shaft 42 is connected to a main shaft motor 40 and an electromagnetic brake 43, and the main shaft 42 is driven by the main shaft motor 40 and braked by the operation of the electromagnetic brake 43.

  On the other hand, planetary gear type ear assembly devices 50 </ b> A and 50 </ b> B as ear assembly devices driven by a dedicated motor are arranged between the collars 18 and 18 and the back roller 16 at both end positions of the woven fabric 26. Ear threads 48A and 48B drawn out in pairs from each ear assembly device are connected to the front end 22 of the woven cloth 26 at both ends thereof, and the ear threads 48A and 48B are opened by rotation of a dedicated motor. Movement (torsional movement) can be performed.

  The structure of the planetary gear-type ear assembly devices 50A and 50B will be described with reference to FIG. Broadly speaking, the planetary gear-type ear assembly device 50A is a plurality of gears each having a large number of teeth engraved on the outer peripheral edge thereof, and a cellage gear 52 that is rotatably supported around the sun axis 54, A sun gear 53 that is coaxially mounted on the sun shaft 54 so as not to rotate relative to the sun shaft 54, and idle gears 56A and 56B that are rotatably mounted about a shaft that is provided at a radially distant position on the cellage gear 52. And planetary gears 55A and 55B. The planetary gear 55 </ b> A and the planetary gear 55 </ b> B are arranged on the cellage gear 52 with the position facing each other with the sun axis 54 interposed therebetween. A mail 58A for guiding the ear thread bobbin 57A and the ear thread 48A is integrally attached to the planetary gear 55A. Similarly, the planetary gear 55B guides the ear thread bobbin 57B and the ear thread 48B. A mail 58B is attached integrally to the gear 55B. The ear threads 48A and 48B drawn from the ear thread bobbins 57A and 57B are connected to the fabric 22 via the corresponding mails 58A and 58B. As a mechanism for feeding the ear thread while holding the ear thread bobbin, there is provided a known mechanism (not shown) for rotating the ear thread bobbins 57A and 57B by a certain amount and feeding the ear threads 48A and 48B as each ear thread tension increases. It has been.

  On the other hand, the sun shaft 54 is relatively non-rotatably attached to a loom frame (not shown), and the sun gear 53 is relatively non-rotatably attached to the end of the sun shaft 54 extending through the cellage gear 52. It is done. On the other hand, on the side of the servage gear 52, an idle gear 56A is arranged so as to mesh with the sun gear 53 and the planetary gear 55A, while an idle gear 56B is arranged so as to mesh with the sun gear 53 and the planetary gear 55B. . For this reason, when the cellage gear 52 is rotated once around the sun shaft 54, the idle gears 56A and 56B meshed with the sun gear 53 rotate while revolving around the sun gear 53, and this rotation motion is It is also transmitted to the planetary gears 55A and 55B engaged with each other. As a result, the ear thread opening movement is performed so that the centers of the mails 58A and 58B rotated together with the planetary gears 55A and 55B draw a locus shown by a two-dot chain line. Such a planetary gear ear assembly device is a known device.

  A drive gear 51 is attached to the output shaft of the pulse motor 59A as a dedicated motor, and the drive gear 51 having a large number of gears is arranged on the outer peripheral edge thereof so as to mesh with the cellage gear 52. The assembly device 50A can be driven to rotate at a predetermined reduction ratio. During the weaving operation, the pulse motor 59A is driven so that the cellage gear 52 rotates once while the main shaft of the loom rotates twice, and constitutes a planetary gear type ear assembly device driven by a so-called dedicated motor. . Needless to say, a drive gear 51 and a pulse motor 59B similar to those described above are also provided for the ear assembly device 50B. Further, in the above example, each ear assembly device 50A, 50B is provided with a corresponding pulse motor 59A, 59B, respectively. However, as an example of other ear assembly devices, one shared ear motor is used. The two ear assembly devices 50A and 50B may be driven by a pulse motor.

  Further, such ear assembly devices 50A and 50B are arranged on both sides of the woven fabric 26, and each ear assembly device 50A and 50B, and further, pulse motors 59A and 59B for driving the ear assembly devices 50A and 50B are provided. Corresponding to the change of the weaving width, the mounting position with respect to the loom frame can be adjusted relative to the loom frame.

  FIG. 3 shows an internal block diagram of the control device 60 of the loom. Roughly speaking, the loom control device 60 functioning as a loom controller includes a setting device 62 for setting various weaving parameters, and a loom using the setting parameters and other input data input to the setting device 62. And an ear group controller 90 for controlling the pulse motors 59A and 59B for driving the planetary gear type ear group device.

  The main controller 64 includes an input port 66 that receives an input signal, an output port 68 that outputs an output signal, a central processing unit (CPU) 70 that outputs a control signal to various circuit devices, and various information. And a storage device 72 for storing. In the storage device 72, a plurality of control programs (control routines) created by the machine manufacturer are stored in advance, and control data such as current control values can be temporarily stored.

  The main controller 64 further includes a drive circuit 74 that drives the spindle motor 40, a drive circuit 76 that drives the electromagnetic brake 43, a weft insertion control device 78 that controls weft insertion, and a weft thread that has been inserted. And a weft detection circuit 80 that determines whether the weft insertion is correct or not and generates a weft insertion error signal. These circuit devices 74 to 80 are controlled by signals output from the main controller 64.

  Further, the main controller 64 includes an operation button 81 that is operated when the loom is operated, an inching button 82 that is a low-speed forward rotation button that is operated when the inversion forward rotation is performed, and a low-speed reverse rotation that is operated when the loom is reversed. A reverse button 83 as a button and a stop button 84 that is operated when stopping the loom during continuous operation are connected. Operation signals from the operation buttons, that is, an operation signal S1, an inching operation signal S2, and reverse rotation are connected. An operation signal S3 and a stop operation signal S4 are input. In addition to the above operation signal, the main controller 64 also receives a weft insertion error signal S11 from the weft detection circuit 80, a main shaft angle signal θ from the angle signal generator 85 connected to the loom main shaft 42, and the like to the input port 66. The CPU 70 of the main controller 64 controls the circuits 74 to 80 by executing a control program (a control routine executed in the storage device 72 and outputting a control signal via the output port 68). Can do.

  A known angle signal generator (ENC) such as an absolute encoder or an incremental encoder is connected to the main shaft 42 as an angle signal generator 85 in order to detect an angle θ as a rotational phase. The main shaft angle signal θ is used by the main controller 64 for controlling the loom operation and the loom as well as for controlling the overall operation of the loom. It is also used for control for waiting, control for switching each process at the start of blanking in which a predetermined number of blank weaving is performed when operating the loom.

  The drive circuit 74 controls the spindle motor 40 according to the type of signal output from the main controller 64 (operation signal S6, forward rotation signal S7, reverse rotation signal S8), and the drive mode (high speed forward rotation, low speed forward rotation). Rotation, low-speed reversal, etc.) For example, a known low frequency output inverter device as a low-speed drive power source, a commercial power source as a high-speed drive power source, and an electromagnetic switch that selectively supplies these outputs to the primary winding of the spindle motor 40 The drive circuit can be configured.

  During the operation of the loom, the drive circuit 74 keeps the loom in the normal operation by rotating the spindle motor 40 at high speed in the forward direction by the ON output of the operation signal S6 from the main controller 64 (ON operation signal S6). Further, the drive circuit 74 rotates the main shaft motor 40 at a low speed by the ON output of the forward rotation signal S7 (ON forward rotation signal S7) during the forward rotation of the loom, and the ON output (ON of the reverse rotation signal S8 when the loom reverses. The spindle motor 40 is reversely rotated at a low speed by the reverse signal S8).

  When the driving circuit 76 finishes normal rotation, reverse rotation and operation of the loom, the drive circuit 76 electromagnetically generates electric power necessary for braking the main shaft 42 based on the ON output of the braking signal S9 from the main controller 64 (ON braking signal S9). Send to brake 43. The electromagnetic brake 43 only needs to generate a braking force in response to the output of a braking command, and is not limited to one that generates a braking force by attracting a disk by excitation.

  For example, in the case of an air jet loom, the weft insertion control device 78 includes a weft length measurement storage device, a weft insertion nozzle (main nozzle and a plurality of sub nozzles), and a weft insertion control that controls fluid ejection from these devices and the weft insertion nozzle. Includes circuitry. During operation of the loom (when the operation signal S6 is ON), the weft insertion control device 78 is used for weft insertion while unwinding one pick of weft insertion from the weft length measuring storage device from the weft length measuring storage device. Are injected in a relay manner from the main nozzle and the plurality of sub nozzles, and the weft is inserted into the warp opening. However, during the empty weaving period (while the empty weaving signal S10 is ON), the weft insertion is not performed without weft unraveling or jetting of the weft inserting nozzle even if the operation signal S6 is output ON.

  The weft detection circuit 80 determines whether the weft insertion is normal or not during normal operation of the loom by a yarn signal from a feeler head such as an H1 feeler and an H2 feeler (not shown) provided in the vicinity of the weaving end on the non-feed side. This is a known circuit that generates a weft insertion error signal S11 indicating a weft insertion error. The weft detection circuit 80 does not perform the weft detection operation (that is, generates the weft insertion miss signal S11) during the empty weaving period (when the empty weave signal S10 is ON output) even if the operation signal S6 is ON output. do not do).

  For each circuit of such a control device 60, the setting device 62 has, for example, a display function for displaying the setting status of each setting parameter, control information of the loom, etc. in characters, numbers or graphics and an information input function as a setting device. The setting device 62 is configured to be capable of transmitting and receiving information to and from the main controller 64, the circuit devices 74 to 80, and an ear group controller 91 to be described later via a set value signal S13. Has been. The parameters set in the setting device 62 include various parameters for weaving in addition to setting parameters for starting the loom and for stopping the loom, and for the various parameters for weaving, for example, weft density, warp tension, weft In addition to setting information for the yarn type information of the warp and the weft insertion control device 78 and the weft detection circuit 80, the selection information of the starting method at the start of the loom operation, the low-speed rotation amount of the loom main shaft and the empty weaving for the selected starting method Information that is set electrically, such as a set value such as an operation period, and further, a cross timing of the ear assembly device with respect to the ear assembly control unit 90 and an ear thread opening pattern are included. When an operator inputs a setting value to such a setting device 62, the operator touches the selection information display field or the setting value display field and displays a selection menu (not shown) displayed on the screen, a numeric keypad for inputting a numerical value, and the like. It can be set by touching.

  On the other hand, the ear group controller 90 roughly includes an ear group controller 91 capable of controlling two pulse motors and drive circuits 92A and 92B provided corresponding to the pulse motors 59A and 59B. While the spindle angle signal θ from the angle signal generator 85 is branched and input to the input unit of the ear group controller 91, the control mode signal S12 from the main controller 64 is input to the input unit, Speed command signals S14a and S14b as drive amount signals are connected to the two drive circuits 92A and 92B so that they can be output. Further, the set value signal S13 from the setting device 62 is connected to the ear group controller 91.

  In this embodiment, the dedicated motor is an example of a so-called multiphase pulse motor, and the drive circuits 92A and 92B are connected with pulse currents corresponding to the signals S14a and S14b inputted in the form of speed command signals. A so-called open loop control system is configured to output to the pulse motors 59A and 59B. However, as the dedicated motor, other motors that can control the rotation speed or the rotation amount may be used. For example, the drive circuits 92A and 92B may have an actual rotation speed signal or an actual rotation amount signal of the dedicated motor connected thereto. Can be fed back to form a closed loop control system for the input command signal.

  A control mode signal S12 for the ear setting device from the main controller 64 is input to the ear setting controller 91, and the ear setting controller 91 signals driving of the pulse motors 59A and 59B from a plurality of control modes. A mode corresponding to S12 is selected and controllable. In this embodiment, at the start of operation of the loom, the control for the ear assembly device is sequentially switched to the following four controls. The four control modes that can be executed by the ear group controller 91 include the following.

(A) First control The pulse motors 59A and 59B are each driven to rotate at a phase corresponding to the angle signal θ of the loom main shaft 42. During this control execution period, the pulse motors 59A and 59B Driven synchronously with θ. This control is selected at a time other than when the loom is activated (more specifically, during the weaving operation, during the weaving of the loom or during reverse rotation at the time of repairing yarn breakage, etc.). If the loom main shaft is driven forward by executing this control mode, the pulse motors 59A and 59B that drive the ear setting device are also rotated in the forward direction according to the amount of rotation of the main shaft, and the loom main shaft is driven in reverse. Then, the pulse motors 59A and 59B are also rotated in the reverse direction in accordance with the rotation amount of the main shaft.

(B) Second Control Rather than driving the pulse motors 59A and 59B as in the first control, the synchronous state with respect to the loom main shaft 42 is released, and the pulse motors 59A and 59B are transmitted with the angle signal θ of the main shaft 42. It is a stop state regardless of the above. This control is selected when the ear setting device is stopped when the loom is activated.

(C) Third control Rather than the synchronous drive that follows the loom main shaft angle as in the first control, the synchronous state with respect to the loom main shaft 42 is canceled, and the pulse motors 59A and 59B are set in a preset drive pattern. Therefore, it is normally rotated. This control is selected before the first control is executed after the second control is executed at the time of starting the loom, and the pulse motors 59A and 59B in the stopped state reach the steady rotational speed. It is selected when accelerating to a phase that can be driven synchronously with respect to the main axis.

(D) Fourth control Rather than forward rotation as in the third control, the synchronous state with respect to the loom main shaft 42 is canceled, and the pulse motors 59A and 59B are driven in reverse according to a preset drive pattern. It is. At the time of starting the loom, which will be described later, twisting of the ear thread is generated by the driving by the third control with respect to the pulse motor in a period not involving weft insertion (so-called empty weaving period). In the case of a fabric that is unacceptable due to a problem, it is executed before the third control by setting to execute this control.

  The driving amount pattern used in the third control and the fourth control described above is determined based on the elements constituting the pattern. Specifically, there are driving time and driving speed (or driving amount) as such elements, which are determined in advance in consideration of the followability of the pulse motors 59A and 59B with respect to the change in the rotational speed of the loom spindle. It is stored in advance in a storage device (not shown) of the set controller 91. For this reason, the ear group controller 91 receives the control mode signal S12 for selecting the third control or the fourth control from the main controller 64, and thereby the speed command signal S14a according to the stored drive amount pattern. , S14b is output.

  Therefore, a specific operation mode related to the ear braiding device to which the present invention is applied to a loom that is idle-started with low-speed rotation will be specifically described with reference to a diagram shown in FIG.

  The idle driving start with reversal shown in the first embodiment below is performed by performing the weaving operation without weft insertion while starting the loom main shaft while the loom main shaft is rotated at a low speed by a predetermined amount, and at the same time the above-mentioned low speed reversal is performed. The weaving operation with weft insertion is started by rotating in the forward rotation direction by the predetermined reverse rotation amount. The main controller 64 is preprogrammed with a plurality of activation methods including at least one idle start with low-speed rotation as a method for starting the loom at the start of the loom operation, and is input to the setting device 62. According to the selection information related to the starting method, the corresponding starting method is selected and the operation can be started.

  The dedicated motor-driven ear assembly device, which is a feature of the present invention, activates the ear assembly device in the normal direction by driving the ear assembly device in the normal direction when starting the loom main shaft after low-speed reversal, and then accelerates the ear assembly device with respect to the loom main shaft angle. It is driven synchronously. The embodiment shown in FIG. 4 is more preferable, and when shifting to the weaving operation by reversing the phase of the ear assembly device in advance by the amount of rotation corresponding to the forward rotation operation at the time of starting the spindle. This is an example of preventing excessive twisting of the ear thread, and this example will be described below as a first embodiment.

  In the apparatus that realizes this, the setting condition regarding the loom activation and the setting condition for the ear group control unit 90 are set in advance via the setting unit 62. The main controller 64 is preprogrammed with a plurality of activation methods including at least one idle start with low-speed rotation as a method for starting the loom at the start of the loom operation, and is input to the setting device 62. According to the selection information related to the starting method, the corresponding starting method is selected so that the operation can be started, and the setting device 62 is selected to select the idle driving with reverse rotation as the setting condition for starting the loom. In addition to the information, the main shaft angle at which the operation is performed and the main shaft reversal amount during low-speed reversal (in other words, the first main shaft rotation amount) can be set using the number of main shaft rotations and the main shaft rotation angle as a scale. ing. In the case of the idle driving with reverse rotation, the length of the blank weaving operation period (in other words, the second rotation amount of the main shaft) is determined to be the same value as the main shaft reverse rotation amount at the low speed reverse rotation. In the present embodiment, the setting device 62 has selection information for selecting the idle driving with reverse rotation as the setting condition for starting the loom, the main shaft angle to be operated is “300 °”, and the empty weaving operation period. The number of rotations of the spindle related to the length is set to “1”, and the stop angle of the spindle is set to “120 °”. With this setting, in the low speed reverse rotation, the loom main shaft is rotated up to 120 ° before one rotation, and then the loom main shaft is started from this position while performing the empty weaving operation without weft insertion, and after the next one and a half rotations. It is assumed that the weaving operation with weft insertion is performed from the time when the angle reaches 300 °.

  Then, as setting conditions for the ear group control unit 90, cross timing when the opening angle of the ear thread becomes zero (that is, the ear thread is closed) with the main shaft angle as a scale, driving in the third control (C) described later The set values of each execution period (time) and the rotation amount (number of rotations) as each component of the quantity pattern are preset independently for each of the left and right ear assembly devices 50A and 50B. Further, in the present embodiment, as a countermeasure against the fabric in which excessive twisting of the ear yarn accompanying the execution of the third control at the start of the loom operation is a problem, the fourth control (D ) Is selectively executed, and the setting device 62 includes selection information related to the execution of the fourth control (D) as well as a component of the drive amount pattern in the fourth control (D) control. The set value of the reverse rotation amount of the ear assembly device is input in advance. In the present embodiment, the setting device 62 sets the normal rotation amount of the third control as “one rotation” in consideration of the acceleration characteristics of the pulse motors 59A and 59B as a setting condition for the ear group controller 90. In addition, the selection information for executing the fourth control for preventing excessive twisting of the ear thread at the start of the loom operation, and the reverse rotation amount in the fourth control are the same as those in the third control. It is assumed that it is set as “one rotation” which is the same as the forward rotation amount. Note that the amount of rotation of the ear assembly device here refers to the amount of rotation of the cellage gear 52.

  The drive amount pattern to be used is generated according to an algorithm not described in detail by either the setting device 62 or the ear group controller 91, and more specifically, the mechanical amount such as the set rotation amount and the transmission ratio of the gear mechanism. The target rotation amount of the pulse motors 59A and 59B is calculated based on various parameters and the like, and this is patterned in the form of the speed command amount of the pulse motor corresponding to the elapsed time or the rotation angle of the spindle during the output period. And is stored in the earset controller 91 in advance.

(1) First Example Referring to FIG. 4, after the loom stops rotating during the weaving operation due to the cause of the stoppage, the warp opening is in a closed state in order to prevent warp elongation. The loom main shaft is reversely rotated to the standby position (main shaft angle 300 °), and the cause of the stoppage is repaired and is in a standby state. On the other hand, the ear assembly device is in a state where the first control mode (control mode A) is selected by the control mode signal S12 from the main controller 64, and as a result, is in a synchronous drive state with respect to the main shaft angle. In the loom in such a standby state, the ground warp yarn and the ear yarn are both in a closed state as shown by the circled numeral 1 in FIG.

  When the operator depresses the driving button 85 and the driving operation signal S1 is generated (time t1), the main controller 64 outputs the reverse rotation signal S8 and sets the loom main spindle in advance, that is, the current position. The main shaft is rotated at a low speed from the main shaft angle of 300 °, which is the standby position, to 120 °, which is approximately one and a half rotations before this. On the other hand, the main controller 64 outputs an output for switching the output of the control mode signal S12 to the ear setting device from A to B at time t2, which is set at substantially the same time as time t1, so that the ear setting controller 91 is in control mode. Is switched from the first control (A) to the second control (B). Thereby, the ear group controller 91 can hold the ear group device (that is, the pulse motors 59A and 59B) in a stopped state regardless of the main shaft rotation angle.

  Now, at time t3 when the main shaft angle reaches a predetermined start position (angle 120 °) due to the low speed reverse rotation of the main shaft, as shown by the circled numeral 2 in FIG. At the same time, the warp opening is largely crossed with the woven weft so that the weft is held. Accordingly, the main controller 64 switches the output of the control mode signal S12 of the ear setting device from B to D at the subsequent time t4, so that the ear control controller 91 controls the drive of the pulse motors 59A and 59B to the second. The control mode is switched from the control (B) to the fourth control (D). Thereby, the ear group controller 91 executes the fourth control (D) and follows the drive amount pattern generated in advance for the ear group devices 50A and 50B (that is, the pulse motors 59A and 59B) regardless of the main shaft rotation angle. Reverse at low speed.

  The forward rotation amounts of the ear assembly devices 50A and 50B in the third control mode are set to “one rotation” in consideration of the acceleration characteristics of the loom main shaft 42 and the pulse motors 59A and 59B, and in the fourth control mode. The amount of reverse rotation of the ear setting devices 50A and 50B is set to the same amount of “one rotation”, and finally stored in the ear setting controller in advance as drive amount patterns in the third control mode and the fourth control mode. Has been. For this reason, the ear group controller 91 outputs signals S14a and S14b of the speed command value sv1 sufficient to be reversed by one rotation over the period P1 according to the drive amount pattern for the fourth control mode, and the ear group device 50A. , 50B is stopped at a position reversed by one rotation. When reaching the time t5 when the fourth control is completed, the main controller 64 outputs the control of the control mode signal S12 of the ear setting device so as to switch from D to B. The control mode of the pulse motors 59A and 59B is switched from the fourth control (D) to the second control (B), and each ear assembly device is stopped. At the time point t5 when the period P1 ends, the ear setting device is stopped at a phase reversed by one rotation, and the phase is maintained even after the control mode is switched. The state of the ground warp yarn and the ear yarn at this time is indicated by a circle numeral 3 in FIG. 4. The ear yarn is twisted one turn with respect to the state of the previous circle numeral 2. In other words, by the time the transition to the state of the round numeral 3, the ear thread is in a state of releasing the weft once, but since the ground warp is in a state of holding the weft, the shrinkage of the weft woven into the woven fabric is still Not generated.

  Thereafter, when the time t6 for starting the loom main shaft is reached, the main controller 64 turns on the operation signal S6 to start the loom main shaft and gradually accelerate it toward the speed v2. By turning on S10, the loom 10 performs an empty weaving operation without weft insertion. Further, the main controller 64 still outputs B as the control mode signal S12 of the ear setting device when the time t6 is reached. However, when the subsequent time t7 is reached, the main controller 64 outputs the control mode signal S12 to switch from B to C, so that the ear group controller 91 changes the drive control mode of the pulse motors 59A and 59B to the second. The control (B) is switched to the third control (C). Thereby, the ear group controller 91 starts the third control (C) for driving the pulse motor in accordance with the third control driving amount pattern set in advance over the period P2, and turns the pulse motors 59A and 59B on. Accelerate in the forward rotation direction.

  Note that the period P2 during which the third control mode is executed can be obtained from the relationship with the forward rotation amount F1 determined in consideration of acceleration characteristics and acceleration characteristics of the pulse motors 59A and 59B. The time t7 at which the control mode is started is set to be the above-determined period P2 minutes before the time t9 at which the loom main shaft angle is assumed to reach the angle (300 °) for starting the synchronous driving of the ear setting device. Can be determined. The calculation of the period P2, the generation of the driving amount pattern, the calculation of the time t7, and the like are executed by processing not described in detail by the setting device 62 or the ear group controller 91, and the obtained time t7 is obtained via the set value signal S13. To the main controller 64.

  As a result, over the period P2 in which the third control is performed, the ear group controller 91 gradually increases the speed command values of the output signals S14a and S14b. The pulse motors 59A and 59B are accelerated and accelerated so as to reach a speed sv2 at which the synchronous drive can be smoothly performed at time t10, which is the subsequent synchronous drive start timing. At time t7 when the control is switched to the third control, as shown by a circled numeral 4 in FIG. 4, the ear yarn is still twisted once and the weft is constrained, and the synchronous drive is started at time t10. At time t8 when the main spindle angle reaches 180 ° earlier than that, as shown by the circled numeral 5 in FIG. 4, the ground warp is in a state in which the weft is released, but it still remains due to acceleration in the forward rotation direction of the ear setting device. The weft is held by being twisted about 1/2 turn, and the weft is not loosened at this stage.

  When reaching the time t10 at which the ear setting device is accelerated to the speed sv2 that can be driven synchronously with respect to the main shaft angle, the main controller 64 outputs the control mode signal S12 from C to A, whereby the ear setting controller 91 The drive mode of the pulse motors 59A and 59B is switched from the third control (C) to the first control (A). As a result, the ear group controller 91 performs synchronous driving for the pulse motors 59A and 59B to follow the rotation angle of the loom main shaft. Thereafter, the ear group controller 91 synchronously drives the pulse motors 59A and 59B based on the angle signal θ of the main shaft. Thereafter, at time t11 (main shaft angle 300 °) when the main shaft is rotated forward by an amount of main shaft reversal corresponding to the amount of low speed reversal performed earlier, the ground warp yarn is in a closed state and the twist of the ear yarn is eliminated. Thus, the phase is almost the same as that at the previous time t1.

  When the time t11 is reached, the main controller 64 outputs the empty weaving signal S10 off to start the weaving operation with weft insertion. In the weaving control device 78 and the weft detection circuit 80, the operation signal S6 has already been turned on and the signal S10 has been turned off. Later wetting will start from the next cycle. The weft insertion control device 78 starts the weft insertion by injecting the weft insertion nozzle in accordance with the injection timing of the weft insertion nozzle preset via the setting device, and the weft detection circuit 80 starts the weft insertion with respect to the weft insertion yarn. The error detection operation starts. Further, since the ear group controller 91 has already executed the first control, the ear group devices 50A and 50B are continuously driven in the normal rotation direction in synchronization with the rotation of the main shaft of the loom. In this way, the weaving operation of the loom is started.

  As described above, in a loom that starts operation by idle driving with low-speed rotation of the loom main shaft, the weaving operation without weft insertion is performed for one or more cycles after starting the loom main shaft. The weaving force against the weft thus formed is increased, and the weaving step can be eliminated. On the other hand, in the ear assembly device, the wefts are restrained by stopping the pulse motors 59A and 59B and closing the ear yarns during the process of rotating at a low speed, and during the empty weaving operation at the latest after the loom is started. Starts the third control to rotate the pulse motors 59A and 59B in the normal direction, and then executes synchronous driving with respect to the main shaft angle from the time when the main shaft angle reaches the synchronous driving angle. Moreover, since such a synchronous drive angle is determined at the latest from the start of the subsequent weaving operation period or the start of the weaving operation until the end of several cycles, the pulse motors 59A and 59B are provided for the subsequent synchronous driving. It can be fully accelerated. Accordingly, the follow-up delay with respect to the main shaft can be reduced as compared with the case where the pulse motors 59A and 59B in the stopped state are synchronously driven when the synchronous driving angle is reached as in the conventional device, and a weft insertion error that has occurred in the past, This prevents fabric quality problems such as loosening and over-tightening of the ear tissue.

  Further, in the first embodiment, the ear group controller 91 is capable of executing the fourth control for bringing the pulse motors 59A and 59B into the reverse drive state. The ear group controller 91 is preliminarily input with the amount of reverse rotation with respect to the pulse motors 59A and 59B at the time of execution of the fourth control in consideration of the normal rotation driving amount in the third control. 91 executes the fourth control from time t4 to time t5 from the end of the step of rotating the main shaft at a low speed to the start of the main shaft. When the low-speed rotation of the main shaft is completed, the warp is in a state of restraining the weft. Therefore, even when the reverse rotation by the fourth control of the pulse motors 59A and 59B is executed and the ear thread releases the weft, the warp Since the opening does not change and the weft is kept restrained, so-called weft loosening does not occur. When the synchronous drive angle is reached (time t10) by the third execution after the main shaft of the loom is started, the pulse motors 59A and 59B are in the phase state before the fourth control is executed and in the normal state. In other words, since the ear thread opening phase is substantially the same as that in the normal weaving operation, excessive twisting of the ear thread does not occur when the loom is restarted. For this reason, it is more suitable in terms of fabric quality.

  The above embodiment can be modified as follows. Regarding the amount of rotation of the ear assembly device in the third control and the fourth control of the above-described ear assembly device, in the above-described embodiment, an example in which the number of rotations of the ear assembly device is set as a scale so as to be “1 rotation”. However, the phase angle of the ear assembly device (selvage gear 52) may be set as a scale.

  In addition, the relationship between the set normal rotation amount F1 of the ear setting device in the third control and the set reverse rotation amount R1 in the fourth control is set to the same amount in the above embodiment, but the fabric quality is significantly impaired. Different values may be set within a range that does not exist.

(2) Second Example In the above-described first example, before the loom main shaft is started, the dedicated motor is reversely rotated in advance by an amount corresponding to the normal rotation amount in the third control, so-called This is an example of eliminating excessive twisting of the ear thread during the re-operation of the loom, and can be said to be the most preferred embodiment. However, the present invention is not limited to the embodiment for obtaining such a high-quality woven fabric. For example, depending on the woven fabric, there are some woven fabrics in which excessive twisting of the ear thread several times does not matter so much in terms of the fabric quality. When weaving such a fabric, the operation for preventing excessive twisting, that is, the fourth control (D) may be omitted. In the following, the second embodiment shown in FIG. 5 is an embodiment in which the fourth control which is performed before the loom main shaft is started in the first embodiment is omitted. The second embodiment will be described below with reference to FIG. 5, but the same components as those in FIG. 4 are denoted by the same reference numerals and detailed description thereof is omitted.

  As shown in FIG. 5, when the operation signal S1 is generated, the low speed reverse rotation of the loom main shaft is started from time t1, and until the low speed reverse rotation is stopped at time t3, the same as in the first embodiment (FIG. 4). Since the control mode of the ear setting device is switched from A to B at time t2, which is substantially the same time as time t1, the ear setting device is released from the synchronized state with respect to the loom main shaft, and is independent of the rotation of the loom main shaft. However, in the point that the fourth control (D) for reversing only the earring device at a low speed is omitted with respect to the first embodiment, in that it is the same as the first embodiment. This is different from the first embodiment. For this reason, the state of the ground warp and the ear thread at the time t6 in FIG. 5 is the same as the previous time t3.

  Then, the main controller 64 generates an operation signal to start the loom at time t6, so that the loom main shaft is rotated in the forward rotation direction and accelerated toward the steady rotation speed v2, and the main controller 64. Reaches time t7 and switches the control mode signal S12 of the ear setting device from B to C to accelerate the ear setting device in the forward rotation direction. As a result, since the state at time t7 shown in circled number 4 in FIG. 5 is intermediately rotated at time t8 as shown by circled number 5, the ear thread is further twisted. Even if the ground warp yarn is in an open state and the already woven weft yarn is exposed before weaving, the weft yarn is not shrunk because it is restrained by the ear yarn. At time t11 when the ear assembly device is in the synchronous drive state with respect to the main shaft of the loom, the warp opening is closed as shown by the circled numeral 6 in FIG. 5, and the ear yarn is rotated by one rotation from the state at time t7. In this closed state, the ear assembly device is driven synchronously in accordance with the main shaft angle.

(3) Modification Examples The following two embodiments can be modified as follows. In addition, this point can be similarly applied to the second and later embodiments described later without departing from the gist thereof.

  First, regarding the relationship between the time t1 at which the loom spindle starts low-speed reverse rotation and the time t2 at which the control mode of the ear setting device is switched from A to B, in the above embodiment, the time t2 is set to be substantially the same as the time t1, It may be determined in the vicinity (before and after time t1).

  Regarding the front-rear relationship between the time t6 at which the loom main shaft is activated and the time t7 at which the control mode of the ear setting device is switched from B to C, the time t6 at which the loom main shaft is activated precedes the time t7. A later configuration is also possible. In this case, it is possible to configure the ear assembly device using a smaller capacity dedicated motor.

  In the above embodiment, the speed command signals S14a and S14b are set to the speed sv2 corresponding to the spindle speed v2 during steady operation in the driving mode of the ear assembly device (dedicated motor) during the period in which the third control mode is executed. However, the speed command value determined to a value less than this may be gradually increased by outputting it in one or more stages.

  In the two embodiments described above, the idle driving start with the low-speed reverse rotation is shown as the idle driving start with the low-speed rotation which is the starting method of the loom. More specifically, as shown in FIG. 6, when the operation button is pressed from the main shaft angle of 300 ° which is set in the standby state after removing the weft insertion error yarn, the loom main shaft is moved to about 1 from this. After rotating at a low speed to an angle of 120 ° in front of the rotation half, and then starting the loom spindle, performing so-called empty weaving operation without weft insertion and hitting it once or more, and rotating from the starting position by one rotation and half forward It is configured to shift to a weaving operation with weft insertion from an angle of 300 ° or later (more precisely, after beating at an angle of 0 °).

  However, the idle driving start with the low speed rotation of the present invention is not limited to the above-described reverse rotation, and can be, for example, the empty driving start with the forward rotation shown in FIG. The embodiment shown in FIG. 8 is a fabric structure in which the number of repeats of the warp opening pattern is 3 (for example, a fabric in which the warp opening phase returns to the original opening state when the loom main shaft rotates 3 times, such as a 1/2 twill structure. Tissue) It is assumed that, during weaving, for example, the loom main shaft requires a two-turn empty weaving operation from the relationship of the weaving step strength. In this case, when the loom starts, the main controller 64 outputs a normal rotation signal S7 from the angle 300 °, which is the current operation start position, and rotates the loom main shaft at a low speed in the normal rotation direction. Thereafter, the operation signal is output as S6 to start the loom main shaft, and until the main shaft is rotated twice, the empty weaving signal S10 is turned on to perform the empty weaving operation without weft insertion, and then the empty weaving signal S10. Is output to shift to weaving operation with weft insertion.

  The low-speed rotation of this embodiment corresponds to the low-speed normal rotation of the one rotation. Even in a loom in which such idle driving with forward rotation is executed, control unique to the present invention can be performed, and more specifically, at the time when low-speed forward rotation of the main shaft is started or thereafter. From the determined time point, the control mode of the ear setting device is switched to the above-described second control (B), the synchronous operation with respect to the main shaft is released, and the ear setting device is stopped. Then, after the low-speed forward rotation of the main shaft is completed, the control mode of the ear assembly device is switched to the above-described third control (C) before the loom main shaft is started or after the loom main shaft is started, and the ear assembly device is previously set. By accelerating by rotating forward according to the generated driving amount pattern and then reaching the synchronous driving angle determined from the start of weaving operation period or weaving operation to the end of several cycles, The control mode is switched from the third control (C) to the first control (A) described above. Thus, the ear assembly device is driven in synchronization with the rotation of the main shaft.

  In this way, in a loom activated by idle driving with forward rotation, for example, the dedicated motor that drives the ear assembly device is stopped regardless of the main shaft angle after the main shaft of the loom is activated, and then the weft Compared to the technology that drives synchronously with the spindle angle just before the insertion starts, the earring device is driven in the normal direction in advance and synchronously driven from the accelerated state. Can prevent trouble.

  Regarding the main controller 64 that constitutes the above embodiment, in the above embodiment, each of the steps for starting the idle driving with low speed rotation at the time of starting the loom and the control for switching the control mode of the ear setting device are switched over time. However, it is also possible to configure such that the control mode of the ear setting device is switched by detecting a preset spindle angle.

  In the above embodiment, the ear group controller 91 that controls the rotation of the ear group device is provided separately from the main controller 64 that controls the entire operation of the loom, but the main controller has the function of the ear group controller 91. It is also possible to control by an integrated circuit.

  The present invention can be variously modified without departing from the gist of the claims. In addition, the looms to be applied are non-woven looms including fluid jet looms, etc., and are looms that are activated by idle driving with low-speed rotation when the looms are activated, and the planetary gear earring device is dedicated. The invention can be applied to a loom driven by a motor, and the ear assembly device to be applied is not limited to a so-called planetary gear ear assembly device, but is also used for driving a holding device that holds an ear thread twist portion and a bobbin holder. A dedicated motor is provided, and can be widely applied to the ear assembly device in which the dedicated motor is synchronously driven in the normal rotation direction in response to the rotation of the loom main shaft during the weaving operation.

It is a figure which shows the whole loom seen from the weaving width direction. It is a figure which shows the rough structure of the planetary gear type ear assembly apparatus on which this invention is based. It is a block diagram which shows the internal structure of the control apparatus of the loom which comprises the principal part of this invention, and the control apparatus of an ear assembly apparatus. It is a diagram explaining the 1st Embodiment of this invention. It is a diagram explaining the 2nd Embodiment of this invention. It is a diagram explaining the starting method of the loom which this invention presupposes, and is a figure explaining the idle driving start accompanied by low-speed reversal in more detail. Similarly to FIG. 6, it is a diagram for explaining a starting method of the loom, and more specifically, a diagram for explaining an idling start with low-speed forward rotation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Loom 12 Warp 14 Warp beam 16 Back roller 18 １９ 19 綜 絖 Frame 20 筬 22 Before weaving 24 Opening 26 Weaving fabric 28 Guide roll 30 Clothing roll 32 Press roll 34 Fabric winding roll 36 Driving device 38 Opening drive mechanism 40 Main shaft motor 42 Main shaft 42 Loom main shaft 43 Electromagnetic brake 46 Weft 48A, 48B Ear yarn 50A, 50B Planetary gear type ear assembly device 51 Drive gear 52 Cellage gear 53 Sun gear 54 Sun shaft 55A, 55B Planetary gear 56A, 56B Idle gear 57A, 57B Ear yarn bobbin 58A, 58B Mail 59A, 59B Pulse motor 60 Control device 62 Setting device 64 Main controller 66 Input port 68 Output port 72 Storage device 74, 76 Drive circuit 78 Weft insertion control device 80 Weft detection circuit 81 Operation button 82 inch Button 83 reverse rotation button 84 stop button 85 angle signal generator (encoder)
90 Ear group controller 91 Ear group controller 92A, 92B Drive circuit θ Spindle angle signal H1, H2 Feeler F1 Forward rotation amount P1, P2 Period R1 Reverse rotation amount S1 Driving operation signal S2 Jog operation signal S3 Reverse operation signal S4 Stop operation signal S6 Operation signal S7 Forward rotation signal S8 Reverse rotation signal S9 Braking signal S10 Weaving signal S11 Weft insertion error signal S12 Control mode signal S13 Set value signals S14a, S14b Speed command signals t1 to t11 Time

Claims (6)

A main controller that controls the driving of the main shaft via a prime motor by input of a loom operation signal;
An ear assembly device driven through a dedicated motor;
A dedicated motor controller for controlling the driving of the dedicated motor;
The main controller rotates the main shaft at a low speed by a first rotation amount in a predetermined direction, and then performs a one-cycle empty weaving operation without a weft insertion until the main shaft is started and the second rotation amount is normally rotated. In the loom that is transferred to the weaving operation with the weft insertion performed as described above,
The dedicated motor controller includes a first control for driving the dedicated motor in synchronization with the main shaft angle, a second control for stopping the dedicated motor, and a first drive for driving the dedicated motor in a normal rotation according to a predetermined drive pattern. 3 control is enabled,
The dedicated motor controller executes the second control during the step of rotating the main shaft at the low speed, and starts the third control at the latest during the empty weaving operation, and the subsequent empty weaving operation. A control method for an ear assembly device, wherein the first control is started by a predetermined time determined in a period or by a predetermined time determined between the start of the weaving operation and the end of one cycle.   When the predetermined time is reached, the dedicated motor controller starts the third control so that the phase of the dedicated motor matches the phase of the synchronous drive state corresponding to the spindle angle during the weaving operation. The method for controlling an ear assembly device according to claim 1, wherein the forward rotation driving amount in the timing and the control period is preset.   The method for controlling an ear brace apparatus according to claim 1, wherein the start time of the third control is set either before or after the time when the empty weaving operation is started. The dedicated motor controller can execute a fourth control for driving the dedicated motor in a reverse direction, and the dedicated motor controller has a reverse rotation amount of the dedicated motor at the time of the execution of the fourth control. Preset,
The main controller temporarily stops the loom main spindle after the process of rotating the main spindle at a low speed is completed, and then starts the main spindle,
The said exclusive motor controller performs said 4th control, while the main shaft is stopped once, The one of Claim 1 to 3 characterized by the above-mentioned. A method of controlling the ear assembly device.   The method of controlling the ear assembly device according to claim 1, wherein the main controller rotates the main shaft at a low speed in the reverse rotation direction by a first reverse rotation amount as the low-speed rotation.   The main controller rotates the main shaft at a low speed in the normal rotation direction by the first normal rotation amount as the low speed rotation, and the main controller includes the first rotation amount to be rotated at a low speed and the The first rotation amount is determined in advance so that the sum of the second rotation amounts operated in the air weaving operation matches a rotation amount corresponding to a multiple of the number of repeats of the fabric structure. Item 2. A method for controlling an ear assembly device according to Item 1.

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