JP2007321313A - System for preventing misoperation of loom - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique capable of preventing the trouble in terms of fabric quality even when a relevant operator makes an erroneous reverse operation in a loom realizing a medium-closed opening mode by reversing the main shaft of the loom while outputting an opening pattern reversed upside-down relative to the present opening pattern for the following opening pattern. <P>SOLUTION: A reverse-inhibitory angle is determined beforehand inside of a main shaft angle range for which a shedding motion is subject to drive based on the above-mentioned reverse opening pattern. When the main shaft angle comes to the reverse-inhibitory angle by an automatic reverse to a set angle after a halt of the loom's main shaft concomitantly with the occurrence of a frame halt cause or by a reverse concomitant with the input of a reverse button signal, the reverse action of the loom's main shaft concomitant with the input of the reverse button signal is locked. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technique for preventing inconvenience associated with an erroneous operation of a loom in such a stand-by state by preventing the weaving step by making the warp opening in a closed state (leveling state) and waiting when the loom stops. .

  There is also a demand for high-value-added textile weaving in recent years, and considering the compatibility with all kinds of textile structures, an opening device (for example, a dobby device, a jacquard device, or a punching device) that can easily edit the textile texture on a loom. There are an increasing number of weaving factories equipped with an electric opening device that performs opening movement by a dedicated motor provided for each frame. According to such an opening device, change weaving such as twill weave, satin weave and dobby pattern can be easily realized by the opening pattern corresponding to the fabric specification. However, any warp frame has an opening movement that maintains the same opening position for one pick or more. Therefore, even if the loom main shaft is reversed to the cross timing of the opening device and the weaving standby state is set, all warp openings Cannot be closed in the middle. For this reason, the problem that the weaving stage resulting from the tension difference (elongation of the warp) is generated is unavoidable when the worker arrives late and the stoppage time is long.

As a device for solving such a problem, for example, a technique of Patent Document 1 is known as a loom including an electronic dobby device with a leveling function. Roughly speaking, this technique uses an opening pattern in which the opening pattern used in the next step is turned upside down with respect to the opening pattern in the current opening after the loom is temporarily stopped due to the cause of the stoppage. While outputting the output, the loom main shaft is reversed to an angle corresponding to the cross timing of the opening device, thereby realizing the middle closing state. However, when starting the loom, it is necessary to remove the weft yarn after rotating it at a low speed to a predetermined angle in order to cancel the leveling state, such as when the weft stops, for example when the weft stops (i.e., driving after the reverse operation) In some cases, such as when operating other than the weft stop (at the time of warp stop), after the thread breakage has been repaired, the operation is continued without removing the weft, in other words, until the loom is restarted. Since the operation procedure differs depending on the cause of the stoppage, there is a problem that if the operator operates the loom incorrectly without recognizing the cause of the stoppage, the occurrence of a fabric defect is inevitable. On the other hand, in the technique of Patent Document 1, the operation after standby in the leveling state is unified to the return button or the operation button, and when either button is operated, the control device selects the activation sequence corresponding to the cause of the stoppage. A technique for starting the loom by rotating the loom spindle to a desired angle is shown.
JP-A-6-116841 (FIGS. 1 to 14)

  However, in the weaving factory, there are many looms in which the leveling function described above is set to be inactive depending on the fabric specifications even if the loom has an opening device that does not have a leveling function or the loom has a leveling function. . For example, in a loom that does not have a leveling function, when a weft stop occurs, the loom in a standby state is reversely operated to remove a weft insertion error yarn, and then the loom is reversely rotated to a predetermined starting position and then restarted.

  On the other hand, an operator who handles a large number of looms in which a leveling function is activated and a non-actuated loom operate intuitively by operating the operation buttons on the loom without fully recognizing such setting status. This can cause serious problems in fabric quality. More specifically, the leveling function is set where the operator should operate the return button and the operation button for the loom that is in the standby state with the leveling function of Patent Document 1 enabled. You may get confused with a loom that you don't have, and accidentally operate the reverse button. If the weaving machine is further reversed from the leveling standby state realized with the inverted opening pattern in this way, the tension relation of the warp in the opening state is inverted up and down, and the position of the weaving mouth is greatly displaced, and when the loom starts up When a new weaving step occurs or the weaving mouth displaced upward or forward in such a way continues to reverse without noticing that it is an erroneous operation, There is a problem that the quality of the fabric is greatly impaired.

  Such a problem is not limited to the loom in which the operation after standby in the leveling state described above is unified to a specific button, but the opening pattern used in the next step is an opening that is reversed with respect to the current opening pattern. This occurs similarly in a loom that realizes a middle-mouth closed state by reversing the loom spindle while outputting a pattern. However, no technology has been known so far to limit the operator's operation against a loom where there is a possibility that the quality of the fabric may be impaired due to such an erroneous operation.

  The present invention has been made in view of such circumstances, and a loom having an opening device with a leveling function, that is, an opening obtained by inverting the opening pattern used in the next step upside down with respect to the current opening pattern. This is a loom that realizes the middle mouth closed state by reversing the loom main shaft while outputting the pattern. Even if the operator performs a wrong reversing operation, it is generated by the above mechanism by preventing the reversing operation. An object of the present invention is to provide a technique capable of preventing inconveniences in the quality of fabrics.

  Accordingly, the loom premised on the present invention includes a main controller for controlling the driving of the loom main spindle by inputting an operation button signal including a reverse button signal, and an opening pattern in advance over a plurality of steps. Are set, and according to the selected opening pattern, the opening device drives a plurality of ridges corresponding to the rotation of the main shaft, and is used in the next step by the output of the leveling command generated from the main controller. An opening device that switches the opening pattern to a reversing opening pattern in which the vertical position of the reed is reversed with respect to the current opening pattern, and when the cause of stopping is generated during the weaving operation, the main control The machine stops the weaving machine spindle and then automatically reverses the weaving machine spindle to the set angle while outputting the leveling command. It can be a loom to mouth closed state. For such a loom, in the present invention, the main controller has a reverse rotation prohibition angle determined in advance inside a main shaft angle section in which the opening device is driven based on the reverse opening pattern. When the main shaft angle reaches the reverse rotation prohibition angle by the automatic reverse rotation after the loom main shaft stops or the reverse rotation due to the input of the reverse rotation button signal, the loom main shaft rotates in the reverse direction according to the input of the reverse rotation button signal. The gist is to make it inoperative.

  The “set angle” used when stopping the automatic reversal of the above-described loom main shaft is set at or near the cross timing of the warp opening device (the angle at which the driven heel is closed). The cross timing of the opening device is a setting parameter related to the connection phase between the loom main shaft 24 and the drive shaft 52, and generally refers to the loom main shaft angle at which the opening amount of the kite during vertical driving is zero. ing. However, the closed state in the present invention is not limited to the definition that the warp opening amount becomes zero, and the warp opening amount that is hardly noticeable or relatively inconspicuous is several cm or less. The shape (more specifically, 2 cm or less) is defined to be included, and in the range in the vicinity of the cross timing as the setting range of the “setting angle”, the warp opening amount due to the driving warp is several cm. The following main shaft angle is included.

  For the above-mentioned “section in which the aperture device is driven based on the reverse aperture pattern”, more specifically, after the output corresponding to the reverse pattern used in the next step is performed, the eaves frame is actually driven based on the information. Specifically, it may be a section of 180 ° front and back (360 ° in total length) centered on the cross timing of the so-called opening device that is converted into a main shaft angle and becomes a closed state by reversal. it can. Therefore, the reverse rotation prohibition angle determined inside the section excludes the main shaft angle that is the start point and the end point of the driven section, that is, the main shaft angle that maximizes the warp opening amount.

  According to the above summary, even if the operator erroneously operates the reverse rotation button, the main controller controls the loom exceeding the determined reverse rotation prohibition angle in the section in which the opening device is driven based on the reverse opening pattern. Prevents reverse rotation of the spindle. Therefore, as a result of the loom main shaft and thus the warp opening device being driven by an erroneous reversing operation, the above-mentioned deterioration of the fabric quality, such as the weaving step caused by the movement of the weaving position and the cloth tearing caused by the beating, can be prevented. it can.

  The reverse rotation prohibition angle is determined to be an angle at which the problem of the fabric quality does not actually occur. The reverse rotation prohibition angle may be an angle determined in advance by the manufacturer in consideration of the above, or may be freely changed by the user.

  The preferred reverse rotation prohibition angle may be determined at the cross timing (closing timing) of the opening device and its vicinity in the same manner as the “set angle” described above. It includes a range of the main shaft angle that is several cm or less (for example, a range of 50 ° before and after the cross timing of the opening device). Thereby, it is possible to prevent a reverse operation in which the position of the weave is greatly displaced. More preferably, the reverse rotation prohibiting angle is determined to be the same angle as the set angle at which the automatic reverse rotation operation is stopped. As a result, the loom that has been waiting in a closed state due to the cause of the stoppage cannot perform manual reversal operation, so that the quality of the fabric is not impaired as described above.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows an internal block diagram of a control device 10 of a loom and an opening device 50 that generates a warp opening motion. The loom control device 10 functioning as a controller roughly controls the loom using a setting device 12 for setting various weaving parameters, and setting parameters and other input data input to the setting device 12. Main controller 14 to be included.

  The main controller 14 includes an input port 16 that receives an input signal, an output port 18 that outputs an output signal, a central processing unit (CPU) 20 that outputs a control signal to various circuit devices, and various information. And a storage device 22 for storing. A plurality of control programs (control routines) created on the machine manufacturer side are stored in the storage device 22 in advance, and control data such as current control values can be temporarily stored.

  In addition to the drive circuit 28 for driving the spindle motor 26 and the drive circuit 32 for driving the electromagnetic brake 30, the main controller 14 that functions as the main controller further drives the take-up motor, although not shown below. A winding control circuit, a sending control circuit for driving the sending motor, a weft insertion control device for controlling the weft insertion, and the like are connected. These circuits are controlled by signals output from the main controller 14 via the output port 18.

  The main control unit 14 includes an operation button 41 that is operated when the loom is operated, an inching button 42 that is a low-speed normal rotation button that is operated when the jogging is normal, and a low-speed reverse operation that is operated when the loom is reversely operated. A reverse button 43 as a button and a stop button 44 that is operated when stopping the loom during continuous operation are connected. Operation signals from the operation buttons, that is, a driving 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 to the input port 16, respectively. In addition to the above operation signals, the main controller 14 also includes a weft insertion error signal S10 from the weft detection circuit 47, a warp break signal S11 from the warp break sensor 48, and an angle signal generator 46 connected to the loom main shaft 24. Is received by the input port 16, the CPU 20 executes a control program (control routine) stored in the storage device 22, outputs one or more control signals via the output port 18, and is connected. In addition to the circuit 28, the circuit 32, and the circuit (not shown), the aperture controller 56 described later can be controlled.

  A known angle signal generator (ENC) 46 such as an absolute encoder is connected to the main shaft 24 functioning as a crank shaft of the loom in order to detect an angle θ as a rotational phase. The spindle angle signal θ can be output with the beat timing of 0 °. In the main controller 14, the main shaft angle signal θ is used for controlling the entire operation such as operation and stop of the loom, and as will be described later, the loom is put in a state where the loom is in the middle-mouth closed state due to the occurrence of the stoppage. Therefore, it is also used for stop control such as reverse rotation stop at a set angle.

  The drive circuit 28 controls the main shaft motor 26 according to the type of signal output from the main control device 14 (operation signal S5, forward rotation signal S6, reverse rotation signal S7). Rotation, low-speed reversal, etc.) For example, when the main shaft motor 26 is configured by an induction motor, the drive circuit 28 can be configured by a known inverter device that generates AC power having a frequency corresponding to the driving mode of the main shaft motor 26, or alternatively. In addition, a low-frequency output inverter device as a low-speed drive power supply, a commercial power supply as a high-speed drive power supply, and an electromagnetic switch provided so that these outputs can be selectively fed to the primary winding of the spindle motor 26, It is also possible to configure a known drive circuit including

  During the operation of the loom, the drive circuit 28 rotates the main shaft motor 26 at high speed by the ON output of the operation signal S5 from the main control device 14 (ON operation signal S5) to maintain the loom in the normal operation state. Further, the drive circuit 28 rotates the main shaft motor 26 at a low speed by the ON output of the forward rotation signal S6 (ON forward rotation signal S6) at the time of the low speed forward rotation of the loom, and the ON output of the reverse rotation signal S7 at the time of the low speed reverse rotation of the loom. The spindle motor 26 can be reversed at a low speed by the (ON reverse rotation signal S7).

  The drive circuit 32 is required for the electromagnetic brake 30 to brake the main shaft 24 by the ON output of the braking signal S8 from the main control device 14 (ON braking signal S8) when the forward rotation, reverse rotation and operation of the loom are finished. A lot of power. The electromagnetic brake 30 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.

  The weft detection circuit 47 is in the 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 weft end of the weft flying path on the side opposite to the yarn feeding side. This is a known circuit that determines whether the weft insertion is correct or not and generates a weft insertion error signal S10 indicating a weft insertion error or blowout. The warp break sensor 48 has a plurality of pins that are inserted individually for each warp, for example, and is a known sensor that generates a warp break signal S11 by electrically detecting a pin that is dropped along with the warp break. is there.

  The setting device 12 is configured by a so-called touch panel that has, for example, a display function for displaying the setting status of each setting parameter, control information of the loom, and the like, and a setting information input function as a setting device. The setting device 12 is capable of transmitting and receiving information to and from each circuit such as the main controller 14 and an opening controller 56 described later. Parameters set in the setting device 12 include various parameters for weaving in addition to setting parameters for starting the loom and for stopping the loom (the specific operation will be described with reference to FIG. 2). The various parameters for weaving include, for example, set values for the weft density, warp tension, weft and warp thread type information, weft insertion control device, weft detection circuit 47 and warp breakage sensor 48, and warp opening pattern for warp opening device 50. And information such as the weft selection mode. When an operator inputs a setting value to such a setting device 12, the operator touches the display screen of the setting value, touches a screen such as a selection menu (not shown) displayed, a numeric keypad for inputting a numerical value, and the like. Can do. In addition, the setting device 12 can input selection information such as operation / non-operation of a control function for the electronic dobby device described above, for example, a leveling function described later by operating a screen (not shown).

  On the other hand, the loom 1 is provided with a warp opening device 50. In this embodiment, as a warp opening device, an electronic selection signal is output in accordance with an opening pattern that has been created and stored in advance for each opening step number, and the opening movement of each reed frame can be arbitrarily switched. A dobby device will be described as an example.

  The opening device 50 roughly includes an opening device drive shaft 52 connected to the main shaft 24 of the loom, an opening controller 56, and an opening drive mechanism 58. A large number of reeds 63 arranged in the weaving width direction and the warp running direction are respectively held by a plurality of reed frames (not shown) extending in the width direction, and the opening drive mechanism 58 independently supports each reed frame. It is a known device that can be driven. Further, the opening drive mechanism 58 incorporates a selection solenoid 57 having a plurality of solenoids corresponding to each collar frame, and the opening device 50 drives each collar frame in accordance with the operation mode of the plurality of solenoids. Constructs a dobby opening device. The drive shaft 52 is mechanically connected to the opening drive mechanism 58 to transmit the rotational force of the main shaft 24 and contribute as a power source for each frame motion, while generating a dog signal for generating two step signals S16 and S17. 53, and sensors 54 and 55 for detecting the detection body of the dog 53 with an angular delay relative to each other are arranged. Step signals S16 and S17 from the sensors 54 and 55 are sent to the opening controller 56.

  In the opening controller 56, the movement mode (selection of up / down movement of the frame) and information such as output modes of various selection signals used for multi-color weft insertion and driving density switching are displayed in the opening controller 56. Each number is set in advance via the setting device 12, and these pieces of information are stored in a built-in storage device. Therefore, the opening controller 56 detects the rotation direction of the drive shaft 52, in other words, the loom main shaft 24, based on the step signals S16 and S17 from the sensors 54 and 55, and increases or decreases the opening step number by one according to the number of rotations. Then, the opening pattern and the selection pattern are updated one by one, and based on this, the selection signal S18 of the frame is associated with each frame to be driven in the movement mode in the next opening step through an electronic circuit not described in detail. In addition to outputting to each selection solenoid 57 as an actuator, various selection signals S13 such as a weft selection signal are output to each circuit on the loom, or in an inversion prohibition section in the rotational direction that unavoidably exists on the mechanism of the electronic dobby device. When entering, main control is applied to the reverse prohibition signals S15a and S15b for prohibiting the reverse rotation. And to output the location 14. When the opening controller 56 receives the leveling command S14 from the main control device 14, the reversing opening pattern used in the next opening step at the time of reversing is reversed with respect to the one corresponding to the current opening step number. By outputting as a signal S18 based on the opened pattern, it has a so-called leveling function that changes the warp opening state to the middle mouth closing state.

  FIG. 2 is a chart showing the loom operation state transition using the loom main shaft angle θ as the horizontal axis and the output mode of each signal and the actual opening pattern of the warp as the vertical axis. More specifically, FIG. 2 shows the step signal S16 from the sensors 54 and 55 together with the warp actual opening pattern and the pattern numbers of the hook frame patterns output by the opening controller 56 for forward rotation and reverse rotation in order from the top of the drawing. , S17, and the output logic of the loom main shaft as an angular transition of the loom main shaft, the angle (timing) at which the weft insertion error signal S10 is generated as a center, and downward in time series. Show. In addition, the output logic of the warp actual opening pattern when the leveling command S14 is output to the opening controller 56 and the output logic of the reverse reed frame pattern output from the opening controller 56 are shown side by side.

  Here, in a loom in a continuous operation state with weft insertion, processing from the occurrence of blowout of weft, which is one of the causes of stoppage, until the loom is restarted will be described as an example. The weft blown out shall be repaired by the operator himself instead of using a so-called automatic repairing device, and the loom will wait with the warp opening state set to the so-called middle mouth closing state until the worker arrives. And Further, details are shown as an example in which an electronic dobby leveling function, which will be described later, is used to wait in the middle mouth closed state. Each operation including a leveling function is executed mainly by various commands output from the main control device 14, and these are control programs (control routines) stored in the main control device 14 and the opening controller 56. It is realized by executing. Hereinafter, this will be specifically described with reference to FIG.

  First, referring to FIG. 2, when a stop factor occurs in the continuous operation state of the loom, the main controller 14 determines which cause is caused by a plurality of signals from various sensors. Then, processing corresponding to each stop factor is performed. In this example, it is assumed as an example that a weft blowout has occurred. First, the weft detection circuit 47 detects a blowout of the weft insertion yarn, and a weft insertion error signal S10 is generated at a main shaft angle of 310 °. As a result, the main control device 14 immediately turns off the output of the operation signal S5 and outputs the braking signal S8 over a predetermined period, so that the drive circuit 28 stops power supply to the main shaft motor 26 and the drive circuit 32. Feeds the electromagnetic brake 30 and activates it to stop the loom main spindle 24. As a result, as shown in FIG. 2, the loom stops at an angle of 320 ° after about one rotation after detecting the weft insertion error. Needless to say, when a cause of stoppage other than the above-described weft insertion error occurs, such as warp breakage, a corresponding process is performed.

  Next, the main control device 14 outputs the braking signal S8 OFF and the reverse rotation signal S7 ON to place the loom 1 in the weaving standby state, and the set angle at which the warp opening of the loom main shaft 24 is in the middle mouth closed state. It automatically reverses approximately 1 turn to 300 °. Here, the spindle angle to be set to the standby state is the spindle angle at which the collar frame is in the middle mouth closing position, that is, 300 ° which is the set cross timing of the opening device 50, and this reverse operation is preset in the setting device 12. This is realized by executing a control routine that continuously reverses the loom main spindle 24 until the set angle reaches 300 °. Note that the cross timing of such an opening device is appropriately set by adjusting the connection phase between the loom main shaft 24 and the drive shaft 52, and is converted into a loom main shaft angle by several tens of degrees before and after the fabric specification. It adjusts suitably in the range. FIG. 2 shows an example in which the opening timing of the opening device is set to 300 °.

  Here, the operation of the electronic dobby device (opening controller 56) will be briefly described. In the example shown in FIG. 2, the actual opening pattern is set as 5 cycles as 2 → 3 → 4 → 5 → 1..., That is, one repeat every 5 rotations of the loom spindle. Then, by inputting the step signal S16 and the step signal S17 from the sensor 54 and the sensor 55, the forward rotation frame pattern contributing to the opening pattern during rotation in the forward rotation direction is preceded by one cycle before the actual opening pattern, 3 → 4 → A predetermined opening movement is realized by sequentially generating 5 → 1 → 2. When the loom main shaft is rotated in the reverse direction, in other words, when the actual opening pattern is changed from the right side to the left side of the page, from 5 → 4 → 3 → 2..., The input of step signal S16 and signal S17 Opening motion is generated by sequentially generating a reverse frame pattern that contributes to the opening pattern during rotation in the reverse rotation direction as 4 → 3 → 2 → 1... Is realized. The solenoid selection opening pattern signal is output for a predetermined period during which the opening operation of one cycle moves to the opening operation of the next cycle, that is, in the vicinity of the main shaft angle that is the maximum opening amount of the opening device. is there.

  Further, the step signals S16 and S17 from the sensors 54 and 55 are the basis of the inversion prohibition signals S15a and S15b output from the opening controller 56. This is because, in the electronic dobby device, there is a section where the reversal of the rotation direction is prohibited in the drive shaft 52, in other words, the loom main shaft 24, due to the convenience of the frame frame motion selection mechanism. This is because when the rotation is reversed, a selection error (so-called twill) of the frame is generated. Therefore, the opening controller 56 determines the rotation direction of the drive shaft 52 when the output of the operation signal S5, the forward rotation signal S6, and the reverse rotation signal S7 from the main control device 14 is turned on, and according to the determined rotation direction. The inversion prohibiting signal S15a or the signal S15b is selectively output in synchronization with the step signal S16 or the step signal S17. More specifically, when rotated in the forward direction, only the reverse prohibition signal S15b in the reverse direction is output in synchronization with the step signal S17, and when rotated in the reverse direction, it is reversed in the forward direction. Only the inhibition signal S15a is output in synchronization with the step signal S16. The inversion prohibition signals S15a and S15b are input to the main control device 14, and when the main control device 14 operates a manual operation button or starts automatic rotation operation, inversion of the rotation direction is prohibited by these signal input states. It can be configured not to execute the rotating operation.

  FIG. 3A shows an example of the setting state of the normal opening pattern for weaving in relation to five rib frames H1, H2,..., H5. In the same figure, the x mark portion indicates the upper position of the frame, and the blank portion indicates the state of the lower position of the frame. In the process of changing the opening step number from “1” to “5” in the vertical direction of the page, in other words, in the process of changing the opening pattern from pattern “1” to pattern “5”, one rib frame is set at the upper position. The pattern is set at the lower position.

  The opening controller 56 reverses the loom main shaft by one rotation during the leveling operation to set the leveling state. Prior to that, the current solenoid selection pattern is changed to the reverse pattern of the current actual opening pattern and output as a reverse frame pattern. In the figure, the reverse pattern is displayed with a bar on the number. FIG. 3B shows an inversion pattern with respect to the normal opening pattern. The reverse pattern here means that the vertical relationship of the vertical frame of the normal opening pattern is set in reverse.

  Therefore, the main controller 14 outputs the leveling command S14 to the opening controller 56, reverses the signal output to the opening solenoid 56 to the selection solenoid 57, that is, the solenoid selection opening pattern, and reverses the braking signal S8 while outputting the OFF signal. The signal S7 is turned on to reverse the loom spindle about one revolution. The actual opening pattern changes according to the reversal pattern by the reversal of one rotation at this time. As a result, all the hook frames H1, H2,... H5 move in the vertical direction. That is, in the normal actual opening pattern 4, the four collar frames H 1, H 2, H 4 and H 5 are set downward, and the other collar frame H 3 is set upward. The reversal pattern 4 moves the upper reed frame H1, H2, H4, H5 upward, and the upper reed frame H3 moves downward. 300 °), all the hook frames H1, H2,... H5 can be set at the leveling position, that is, in the middle of the upper and lower sides. Such a function is not limited to a normal opening pattern that is repeated once every five cycles, but also applies to a plain weave opening pattern and other opening patterns of a woven structure.

  Returning to FIG. 2, when the main controller 14 reverses the loom main shaft from the current angle of 320 °, the main controller 14 converts the loom main shaft angle into a leveling command before ½ rotation (180 ° before) of the cross timing. S14 is output to the opening controller 56 to execute the leveling function, thereby outputting the opening pattern reversed with respect to the current opening pattern to the selection solenoid 57 and outputting the braking signal S8 off, while the reverse rotation signal S7 is output. Turns on and reverses the loom spindle at low speed. When the main shaft angle θ reaches the set angle 300 ° by such reverse rotation, the main controller 14 turns off the output of the leveling command S14 and stops the loom main shaft 24. Further, the main control device 14 turns on a tower lamp (not shown) or makes a display to that effect on the display screen of the setting device 12 to notify the operator that the loom is in a standby state. As a result, as shown in FIG. 6, all the heel frames are moved to the intermediate position, and the middle mouth closed state (medium mouth leveling) of the warp opening is realized.

  Here, the warp opening state when the leveling function is deactivated and stopped at an angle of 300 ° is shown in FIG. 5 for reference. When entering the standby state in the warp opening state of FIG. 5, the warp yarn in the opening state is stretched as the stopping time elapses, and this causes the weaving step (that is, the twill pillow). In this way, when the entire reed frame is in the middle-opened state, the warp thread inserted through any reed is uniformly stretched, so that such a weaving step does not occur.

  In FIGS. 5 to 6, the periphery of the ridge 64 of the loom 1 as seen from the right side direction is schematically shown. A number of warp yarns 61 are unwound from a warp beam (not shown), and all are passed through back rolls (not shown) and the corresponding scissors 63 and 64 via warp breakage sensors, and are connected to the weave 62. Further, the woven fabric 60 connected to the weaving port 62 is guided to the front of the loom via the temple device 65 and is wound around the fabric winding roll via a guide roll and a clothing winding roll (not shown). The scissors 64 are converted into a swinging motion through a motion conversion mechanism (not shown) connected to the main shaft 24 and driven by striking. Further, the warp 61 travels from the left side to the right side of the drawing.

  Now, the operator manually performs blowout weft repair, reverse operation to the start position, and the like for the machine stand-by in the middle-mouth closed state. However, if a manual operation performed by the operator is mistaken at this time, problems in the fabric quality such as weaving steps and tearing due to weaving movement, which is a problem to be solved by the present invention, occur. Therefore, for the convenience of explanation, first, the correct operation that should be originally performed by the operator will be explained first, and then the details of this apparatus will be explained.

  In order to start the loom that is in the standby state in the middle mouth closed state, the operator moves the warp opening from the middle mouth closed state based on the reverse pattern described above to the opening state based on the normal opening pattern. Is operated to rotate the loom main spindle 24 at a low speed. At this time, the angle at which the manual forward rotation is finished may be any time when the frame driving is started by the normal opening pattern. Main controller 14 continues forward rotation signal S6 until it escapes from the rotation inversion prohibition section in the electronic dobby device (specifically, until 210 ° after signal S15b output in synchronization with step signal S16 is turned off). The loom main shaft 24 may be rotated at a low speed in a normal manner.

  When the leveling state is released in this way, the operator operates the reverse rotation button 43. The main controller 14 has already output the leveling command S14 to the OFF state, and receives the reverse operation signal S3 and outputs the reverse signal S7 to the angle at which the blown weft is exposed before weaving (specifically, Until the loom spindle reaches 180 °). On the other hand, the opening controller 56 outputs the opening pattern as a pattern 3 which is a normal opening driving mode and drives the reed frame according to the OFF state of the signal S14, so that the generated weft insertion error yarn is exposed and removed before weaving. It becomes possible. Therefore, the operator removes the blown-off weft from the weaving port, operates the reverse button 43 again, and reverses the loom main shaft 24 at a low speed to an angle of 300 ° which is a predetermined operation start position. When the operator depresses the operation button 41, the main controller 14 outputs the operation signal S5 while turning off the braking signal S8, so that the loom main shaft 24 is activated and enters the high speed forward rotation state. Starts to enter the continuous operation state. In this way, a series of processes from when the weft insertion error signal S10 as a stop signal is generated until the loom is restarted is executed.

  As described above, when the loom in the standby state is re-operated, it is re-operated through some operations of the operator such as yarn repair and manual operation, but the operator does not always perform a predetermined operation. For example, for a loom waiting in a closed state due to a weft stop, it is necessary to release the leveling state by moving the loom in a forward and reverse direction, and then removing the weft while it is necessary to perform a reverse operation. In particular, an operator who is paying attention to the situation often performs the reverse operation intuitively without performing such inching forward rotation. Therefore, as illustrated by the dotted arrow in FIG. 2, it is assumed that the frame is further reversed from the position of the cross timing 300 ° within the section driven based on the reverse opening pattern, and the cross timing 300 °. FIG. 7 shows a warp opening state in which the rotation is further reversed by about ½ turn from that (angle 180 °, shown by a circle letter C in FIG. 2). Thus, once the position of the weaving mouth 62 moves greatly, even if an opening operation based on a normal opening pattern is performed thereafter, it cannot be returned to the normal position, and a weaving step occurs. . In addition, since the collar frame is driven based on a reversal pattern instead of the normally used opening pattern, even if the weft insertion error occurs at the same angle, the weft insertion error yarn is not released from the warp, and the operator Cannot remove the weft insertion error yarn. On the other hand, the operator may further reverse the loom about 1/2 turn without noticing that the cause of the mistaken yarn removal cannot be the previous erroneous operation. Assuming a reversed state (an angle of 300 °, indicated by a circular letter D in FIG. 2), the warp opening state at this time is shown in FIG. As a result, the heel 64 and the weave 62 that are advanced as the main shaft 24 reverses interfere with each other, and as a result, the cloth tears. In FIGS. 5 and 7 to 8, the paths of the woven fabric and the warp yarn in the middle-mouth closed state of FIG. 6 are shown by dotted lines for reference.

  On the other hand, the erroneous operation preventing apparatus as the present embodiment is determined in advance even if the operator performs a reverse button operation on the loom in which the warp frame is driven based on such a reverse pattern. By executing a control routine that prevents the reverse rotation beyond the reverse rotation inhibition angle, it is possible to prevent erroneous operation of the loom. In this embodiment, the loom operation button signal is input, and the main controller 14 that controls the entire operation of the loom has the function of an erroneous operation prevention device.

  FIG. 4 shown below is a processing flow executed by the main control device 14 and shows a processing flow when an operation button signal is input in a loom stop state. When the operator operates one of the operation buttons 44 from the plurality of manual operation buttons 41 (processing step ST001), the process proceeds to the next processing step ST002. In processing step ST002, main controller 14 determines the input state of a plurality of operation button signals, and performs a process of branching to a processing step corresponding to the determination result of the operation signal, and reverse operation signal S3 is turned on. As a result of the input, the process branches to the next processing step ST003.

  In processing step ST003, the main control device 14 determines whether the leveling function is enabled / disabled, and branches to the next step corresponding to the determination result. The invalid information is set in advance in the setting device 12 prior to the continuous operation of the loom such as when the machine is started. For example, if this is set to be effective, when the loom after the cause of the stoppage is caused to stand by, a leveling command S14 is output and driving based on the inverted opening pattern as shown in FIGS. 2 and 5 is performed. If the middle mouth closed state is realized and this setting is set to invalid, the leveling command S14 is not output, so that the driving is performed based on the normal opening pattern.

  The processing relating to reverse rotation prevention during driving with the reverse pattern, which is a feature of the present invention, only needs to be performed when the leveling function is enabled, and when it is determined invalid in processing step ST003 (that is, determination) When the result is NO), the determination described later is omitted, and the process immediately branches to the processing step ST006 in which the loom control mode is set to the manual reversal mode. When it is determined that the determination result in processing step ST003 is valid (that is, when the determination result is YES), the process proceeds to next processing step ST004.

  In process step ST004, the main controller 14 determines whether or not the current warp heel frame is being driven based on an inverted opening pattern (reverse frame pattern) generated for so-called middle-mouth leveling. To do. The main control device 14 is configured to be able to control the entire operation of the loom from the occurrence of the stop cause until it is restarted, and has a function of controlling the output of the leveling command S14, as well as the main spindle angle signal θ and the opening. Signals S15a and S15b from the device side are input. More specifically, the signals S15a and S15b are referred to as a forward rotation prohibition signal and a reverse rotation prohibition signal, and are output regardless of the presence or absence of a leveling function as in the present case, depending on the rotation direction of the drive shaft 52. This is an output signal. More specifically, when either the operation signal S5 or the forward rotation signal S6 is input, the opening controller 56 outputs the signal S15a as the forward rotation inhibition signal to the OFF state and outputs the signal S15b as the reverse rotation inhibition signal. When the reverse signal S7 is input in synchronization with the input of the step signal S17 and the reverse signal S7 is input, the signal S15b as the reverse rotation prohibition signal is output in the OFF state, while the signal S15a as the forward rotation prohibition signal is output from the step signal S16. Output is synchronized with the input.

  For this reason, the main controller 14 turns on the internal processing flag A on the assumption that the driving state is based on the reversal pattern for leveling by switching the input logic of the signal S15b from the off state to the on state while the leveling command S14 is output. By setting the state and counting the number of subsequent signal inputs (in other words, the number of times of passage of this angle), it is possible to cope with a plurality of reverse rotations. Also, if such a state is reached again, the drive shaft is rotated forward and the signal s15a is switched from the on state to the off state, thereby reducing the count value of the number of outputs by one and eventually the count value becomes zero. As a result, the internal processing flag A is set to the OFF state. Such processing can be executed as a control routine of the main controller 14.

  In other words, if the logic of the internal processing flag A is in the on state, it can be recognized that the driving state is based on the inverted opening pattern for leveling, and if it is in the off state, the driving state is based on the normal opening pattern. . In view of this, in processing step ST004, main controller 14 determines whether or not driving is performed with an inverted opening pattern according to the set state of internal processing flag A. If internal processing flag A is in the on state, the reverse pattern It is determined that it is in the driving state, and the process proceeds to the next processing step (ST005).

  In process step ST005, the main controller 14 determines whether or not the current main shaft angle θ has reached the reverse rotation prohibition angle preset in the setting device 12, and if not, sets the loom control mode to the manual reverse mode. Then, the process proceeds to process step ST006 for driving the loom, and the process proceeds to process step ST007 in which the control mode of the loom is set to the stop mode when the reverse rotation inhibition angle is reached.

  In the next processing step ST006, the loom control mode is set to the manual reverse rotation mode, the brake signal S8 is turned off to release the electromagnetic brake 30, and the reverse rotation signal S7 is turned on to reverse the loom main shaft 24 at low speed. On the other hand, in process step ST007, the signals S5, S6, and S7 are all output off while the braking signal S8 is turned on in order to set the loom control mode to the stop mode and put the loom in the stopped state.

  Further, in the above processing step ST002, when a signal other than the reverse operation signal S3, that is, the driving operation signal S1, the jogging operation signal S2, and the stop operation signal S4 are input, the process branches to the processing step ST0XX not described in detail and necessary determination is made. Switching between processing and control modes is performed, and a corresponding signal is output to drive the loom corresponding to the operation button. When the inching operation signal S2 and the reverse operation signal S3 are turned off, the process branches to processing step ST007 in accordance with the flow shown by the circled letter A, the loom control mode is set to the stop mode, and the forward rotation signal S6 that has been output so far. And the reverse signal S7 are all turned off, and the braking signal S8 is turned on to stop the loom.

  Further, when the determination result regarding the leveling function setting is NO in the processing step ST003 or when the determination result regarding the presence / absence of driving by the inversion pattern in the processing step ST004 is NO, both of them immediately branch to the processing step ST006. Then, the manual reverse rotation mode is entered, and the low speed reverse rotation operation of the loom is immediately executed.

  Such a series of processing flow shown in FIG. 4 is repeatedly executed while the loom is in a stopped state. While the reverse rotation button 43 is pressed, the low speed reverse rotation operation is continuously performed through the processing steps ST004 and ST005. Executed. Then, when the reverse rotation button 43 is continuously pressed, the main shaft angle reaches the manual reverse rotation prohibition angle preset in the setting device 12 in the processing step ST005 (that is, the determination result is YES), thereby processing step ST007. The loom is automatically stopped at the reverse rotation prohibiting angle. Here, the reverse rotation prohibition angle that is determined in advance can be set via the setting device 12, or may be automatically determined in conjunction with, for example, the setting of the cross timing of the opening device. Various forms such as using values determined on the manufacturer side are conceivable. In this embodiment, an example in which the setting is made via the setting device 12 is assumed, and the reverse rotation prohibiting angle is set in advance to an angle of 280 ° included in a range of several tens of degrees with respect to the angle of 300 ° that is the cross timing of the opening device. Assume that it is set.

  Now, as shown in FIG. 2, for the loom that is stopped at the main shaft angle of 300 ° and is waiting in the middle-mouth closed state, the operator originally performs the inching forward rotation operation to release the middle-mouth closed state. Assuming that the manual reverse operation is performed by mistake, in the processing flow shown in FIG. 4, since each determination result in processing steps ST003 and ST004 is YES, the process proceeds to processing step ST005, and the spindle Since the angle θ has not reached the reverse rotation prohibition angle 280 degrees, the determination result is NO and the process proceeds to processing step ST006, so that the loom further starts low-speed reverse rotation. On the other hand, the processing flow of FIG. 4 is repeatedly executed in a short time period, and when the spindle angle reaches a preset reverse rotation inhibition angle of 280 degrees due to low speed reverse rotation, the determination result in processing step ST005 becomes YES and processing is performed. As a result of shifting to step ST007, the loom control mode is switched to the stop mode, the low speed reverse rotation is immediately stopped, and the loom is stopped. As a result, even if the operator subsequently operates the reverse button 43 again, as long as the leveling state is not released (in other words, the operator rotates forward to the main shaft angle at which the normal opening pattern opens, and the internal processing flag A is set). Since the reverse rotation operation is prevented (unless it is turned off), the operator can notice that an erroneous reverse operation has been performed. Then, the operator performs the inching forward rotation operation which is the correct operation that should be performed originally, cancels the leveling state to the driving state based on the normal opening pattern, and then performs the reverse rotation operation to cause the weft insertion. You can repair mistakes and yarn breaks and restart the loom. In this way, it is possible to reliably prevent serious defects in the fabric quality such as weaving steps and cloth tears caused by erroneous operations.

  The reverse rotation prohibiting angle used in this way may be freely set within a range in which a serious defect does not occur in the woven fabric. For example, in the lower part of the horizontal axis (spindle angle) in FIG. 2, two setting ranges for the reverse rotation prohibition angle are shown with round alphabetic characters a to b. The setting range indicated by the circled letter a specifically indicates a section in which the opening device is driven based on the reverse opening pattern, and the spindle angle at which the warp opening amount is maximum is set within the setting range as indicated by the white circle in the figure. More specifically, as a range of 180 ° front and back around an angle of 300 ° (that is, a range of 120 ° to 120 ° of the next pick, but excluding 120 ° at both ends) Yes. The range indicated by the circled letter b is a preferable setting range, which indicates that the range is several tens of degrees around the cross timing of the opening device, and more specifically, around the angle 300 °. This is an example of a range of 50 ° (ie, a range of 250 ° to 350 °). With such a setting, at least the weaving step due to a large displacement of the weaving position can be prevented.

  More preferably, the reverse rotation prohibition angle may be set to the same angle as the cross timing 300 ° as the set angle, or may be set to an angle after the cross timing such as 320 °. As a result, after the primary stop of the loom due to the cause of the stoppage, the loom is automatically reversed to the set angle of 300 ° and waits in the closed state of the middle mouth. However, when this automatic reverse rotation is completed, the reverse rotation prohibition angle has already been exceeded. Therefore, even if the reverse button is operated in such a standby state, in the processing flow shown in FIG. 4, the determination result in processing step ST005 is always “YES”, and the loom control mode is set to the stop mode. Since the process branches to process step ST007, the reverse rotation operation is prevented.

  In the said Example, the loom stop time accompanying the stop cause generation | occurrence | production was shown as an example, However, It is not restricted to the above as conditions to make it a standby state in a middle exit closed state. For example, the present invention can be similarly applied to a case where the closed state of the middle opening is realized by operating a manual leveling button provided separately and automatically reversing the loom spindle and outputting a reverse pattern from the opening controller.

  The above-described embodiment can be modified as follows. In the above-described embodiment, the main controller 14 determines whether or not the warp is driven with a leveling reversal pattern on the main controller 14 side. The determination circuit may be configured to share such a determination processing function. Specifically, the opening controller 56 generates a manual reverse rotation prohibiting signal during the period in which the warp is driven based on the leveling reversal pattern, and the main controller 14 temporarily performs the reverse rotation operation while this signal is output. Even if the signal S3 is input, it can be realized by not to output the reverse rotation signal S7.

  In the above embodiment, a loom equipped with a so-called electronic dobby opening device as an opening device has been described as an example. However, the present invention is not limited to such an opening device, and the same applies to a device that drives a warp according to an electrical selection signal based on a preset opening pattern. As such an opening device, specifically, an electronic jacquard device that drives the heel to open by an electromagnetic actuator provided corresponding to the warp, a so-called electric opening device that drives the heel frame by an electric motor provided for each heel frame The present invention can also be applied to a loom equipped with such a device. Further, applicable looms are not limited to fluid jet looms such as air jet looms, and can be applied to plain looms such as rapier looms.

FIG. 3 is an internal block diagram of a loom control device and an opening control device that function as an erroneous operation prevention device of the loom. It is explanatory drawing which shows the operation | movement aspect of the opening apparatus after the weft blowout which is one of the weft insertion mistakes generate | occur | produces, and a weaving machine waits in a closed state of a middle opening | mouth until a weaving machine is restarted. Below the main spindle rotation angle), two possible setting ranges for the reverse rotation prohibition angle are shown with circle alphabetic characters a to b. It is explanatory drawing of two opening patterns, (A) shows a normal opening pattern, (B) shows the inversion pattern of a normal opening pattern. It is a main control device as an operation error prevention device of the present invention, and is a flow chart showing processing contents validated after stopping in a middle mouth closed state. It is explanatory drawing which shows the warp opening and the weave opening position state in the main-axis angle shown by the circular alphabet A in FIG. FIG. 3 is an explanatory view showing a state of warp opening and weaving position at a main shaft angle indicated by a circle letter B in FIG. 2. FIG. 3 is an explanatory view showing warp opening and weaving position states at a main shaft angle indicated by a circular letter C in FIG. 2. FIG. 3 is also an explanatory view showing warp opening and weaving position states at a main shaft angle indicated by a circular letter D in FIG. 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loom 10 Control apparatus 12 Setting device 14 Main control apparatus 16 Input port 18 Output port 20 Central processing unit (CPU)
DESCRIPTION OF SYMBOLS 22 Memory | storage device 24 Main shaft 26 Main shaft motor 28, 30 Drive circuit 30 Electromagnetic brake 41 Operation button 42 Inching button 43 Reverse rotation button 44 Stop button 46 Angle signal generator 47 Weft detection circuit 48 Warp breakage sensor 50 Opening device 52 Drive shaft 53 Dog 54, 55 Sensor 56 Opening controller 57 Selection solenoid 58 Opening drive mechanism 60 Woven fabric 61 Warp 62 Weaving port 63 綜 絖 64 ６５ 65 Temple device θ Main shaft angle signal S1 Operation operation signal S2 Jog operation signal S3 Reverse operation signal S4 Stop operation signal S5 Operation signal S6 Forward rotation signal S7 Reverse rotation signal S8 Braking signal S10 Weft insertion miss signal S11 Warp breakage signal S13 Selection signal S14 Leveling commands S15a, S15b Inversion prohibition signals S16, S17 Step signal S18 Selection signal

Claims (3)

A main controller that controls the driving of the loom main spindle by inputting an operation button signal including a reverse rotation button signal, as well as a loom main spindle angle signal;
A plurality of opening patterns are set in advance over a plurality of steps, and an opening device that drives a plurality of scissors corresponding to the rotation of the main shaft according to the selected opening pattern, by the output of a leveling command generated from the main controller An opening device that switches and drives the opening pattern used in the next step to an inverted opening pattern in which the vertical position of the heel is inverted with respect to the current opening pattern;
When a cause of a stoppage occurs during weaving operation, the main controller stops the loom main spindle, and then automatically reverses the loom main spindle to a set angle while outputting the leveling command. In the loom to be closed,
In the main controller, a reverse rotation prohibiting angle is determined in advance inside a main shaft angle section in which the opening device is driven based on the reverse opening pattern,
The main controller is configured such that the main shaft angle reaches the reverse rotation prohibition angle by the automatic reverse rotation after the loom main shaft stops or the reverse rotation due to the input of the reverse rotation button signal. An apparatus for preventing erroneous operation of a loom, characterized in that reverse operation is disabled.   The apparatus for preventing erroneous operation of a loom according to claim 1, wherein the reverse rotation inhibition angle is determined in the vicinity of the cross timing of the opening device.   The apparatus for preventing erroneous operation of a loom according to claim 1 or 2, wherein the reverse rotation inhibition angle is determined to be the same angle as the set angle.

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