JP4339217B2 - Setting value determination device - Google Patents

Description

  The present invention relates to a technique for determining a setting value of an operation mode of a weaving step prevention device for a loom based on information about a woven fabric.

  As one of the weaving step prevention devices of a loom, a so-called kickback operation in which a warp beam or a take-up roll is rotated forward or backward by a predetermined rotation angle to displace the front of the weaving to a predetermined position before starting the loom. There is known an apparatus for performing (see, for example, Patent Document 1).

  Also, as a weaving step prevention device for a multi-color weft insertion loom, a correction amount for correcting the position before weaving is set in advance for each weft color pattern, and when the loom is restarted, the color of the weft There is known a device that performs a so-called kickback operation in which a warp beam or a winding roll is rotated forward or reverse by a predetermined rotation angle according to a correction amount corresponding to a pattern, and the front of the weave is displaced to a predetermined position ( For example, see Patent Document 2).

  However, since the setting of the operation mode of these weaving step prevention devices is performed based on the experience of the worker, and the worker confirms whether or not the weaving step has occurred in the actual woven fabric. It takes a long time for the operator to find the optimum value.

  Therefore, the setting method of the weaving prevention device based on the experience of the operator spends a lot of time on the work of adjusting the setting of the weaving prevention device, so that the production efficiency of high quality woven fabric is low. Have

JP 61-63750 A JP-A-3-27154

  An object of the present invention is to provide an operator with information for setting an operation mode of a weaving prevention apparatus suitable for the specification of a fabric.

  The set value determination device according to the present invention includes an input device to which information relating to a woven fabric is input, and an output device to determine and output a set value of an operation mode of the weaving step prevention device of the loom. The information regarding the woven fabric further includes a cover factor indicating the degree of thread penetration of the woven fabric or a value based on the cover factor. The output unit includes determining and outputting the set value based on at least a cover factor.

  Here, when the cover factor indicating the degree of thread insertion is represented by CF, the cover factor CF is represented by cover factor CF = warp cover factor CFw + weft cover factor CFp. However, the warp cover factor CFw = A × 2.54 / √B and the weft cover factor CFp = C / √D. Parameter A represents the number of warps per unit woven width length, parameter B represents the warp thickness (count), parameter C represents the set driving density, and D represents the weft thickness (count).

  Specifically, the parameter A is obtained by the total number of warps / the threading width. Therefore, the parameter A is calculated based on the total number of warps and the threading width.

  According to the present invention, the set value of the operation mode of the weaving stage preventing apparatus is determined based on at least the cover factor. Therefore, even if the specification of the woven fabric is changed due to the change of the fabric type or the like, if the operator inputs the cover factor or the value based on the cover factor to the input device, the output device will at least cover. The set value of the operation mode of the weaving stage preventing apparatus with the factor added can be automatically output, and can be set in the weaving stage preventing apparatus.

  Moreover, since the set value as the output information output by the set value determining device is determined in consideration of the cover factor, the weaving step preventing device considering the difficulty in driving the weft yarn as compared with the conventional one. Is the set value of the operation mode. Therefore, even an operator with little weaving experience can immediately produce a high-quality woven fabric without a weaving step.

  This is because the operator does not have to repeat trial and error for a long period until he finds the optimum operation mode that takes into account the difficulty of driving in the weft as in the prior art, and thus the time required for such adjustment can be shortened. It is.

  The base value of the cover factor as information on the woven fabric includes values relating to the number of warps per unit woven width, the thickness of the warp, the wetting density of the wefts, and the thickness of the wefts. The method may include calculating a cover factor based on a plurality of values based on the cover factor, and determining and outputting the set value based on at least the calculated cover factor.

  The information on the woven fabric further includes information on a woven fabric type or a woven fabric structure, and the output device sets the set value based on at least one of the information on the woven fabric type or the woven fabric and the cover factor. It may include determining and outputting.

  The output device includes a database in which a plurality of operation modes in a weaving step prevention operation are stored in advance corresponding to information on the woven fabric, and the database based on the information on the woven fabric input via the input device. Search means for searching for a set value of a corresponding operation mode from the above.

  Referring to FIG. 1, in a loom 10, a warp yarn 12 is connected from a warp beam 14 around which the warp yarn 12 is wound to a front weave 22 through a back roller 16, a plurality of reed frames 18 and reeds 20.

  The weft thread 24 inserted into the warp opening is beaten on the front of the weave 22 by the reed 20 to form a woven cloth 26.

  The woven cloth 26 reaches the clothing roll 28 from the front 22 through the guide roll 27. The woven fabric 26 that has reached the clothing roll 28 is fed to the fabric beam 32 by the clothing roll 28 and a pair of press rolls 30. The fed woven fabric 26 is wound around the cloth winding beam 32.

  The warp beam 14 is rotated by a feed motor 34 via a gear mechanism (not shown) constituted by a speed reduction mechanism such as a gear, and feeds a plurality of warps 12 in the form of a sheet. The winding diameter of the warp 12 wound around the warp beam 14 is detected as the winding diameter D by the winding diameter detector 36.

  Each reed frame 18 is reciprocated up and down by the opening drive unit 38 of the opening device 37 to open the warp yarns 12 up and down. The opening drive unit 38 receives a rotational motion of the main shaft 42 rotated by the main shaft motor 40 and converts the rotational motion into a reciprocating motion of each rod frame 18.

  The scissors 20 are driven by a scissor drive unit 44 that receives the rotational motion of the main shaft 42 so that the rotational motion is converted into a swing motion, and the weft 24 inserted into the opening of the warp 12 is transferred to the weft 22. Strike.

  The clothes winding roll 28 is rotated through a gear mechanism (not shown) configured by a speed reduction mechanism such as a gear that receives the rotational motion of the winding motor 46. The rotated clothing roll 28 sends the woven cloth 26 to the cloth winding beam 32 in cooperation with the pair of press rolls 30.

  The rotation angle of the main shaft 42 is detected by the encoder 48. The detected rotation angle of the main shaft 42 is supplied to the main controller 50 and the delivery controller 52 as the main shaft rotation angle θ (see FIG. 2).

  Referring to FIG. 2, the set value determination device 54 includes a touch panel 56 that functions as an input device and a display device. Further, the set value determining device 54 stores in advance a database 58 in which set values T of a plurality of operation modes in the weaving step preventing operation are stored in advance corresponding to the information related to the woven fabric, and the database 58 and the input device. And a central processing unit (CPU) 62 that functions as a search unit. The memory 60 stores a program for searching for the setting value T of the operation mode based on the information related to the woven fabric.

  Central processing unit 62 is connected to touch panel 56, database 58, memory 60, and port 64. When an operator inputs information related to the woven fabric of the loom 10 as input information via the touch panel 56, the central processing unit 62 reads a program for searching the database 58 from the memory 60, and uses the input information related to the woven fabric. Based on this, the setting value is retrieved from the database 58.

  The set value determining device 54 has a function of inputting the set value of the operation mode of the weaving step preventing device 78 as described above, and a setting for outputting to a device (not shown) such as a warp tension control or a weft inserting device. A function as a setting device of the loom 10 for inputting a value or displaying information of the loom 10 can also be provided.

  The central processing unit 62 displays the retrieved setting value on the touch panel 56 so that it can be read by the operator. Further, the central processing unit 62 may display or display the set value on the touch panel 56 and may output it to the port 64. That is, the output device of the set value determining device 54 in this embodiment includes a port 64 in addition to the touch panel 56, the database 58, the memory 60, and the central processing unit 62 that function as a display device.

  Main controller 50 receives operation signal S1, jogging signal S2, reverse signal S3, and stop signal S4 output from operation button 66, inching button 68, reverse button 70, and stop button 72. The main controller 50 also receives a stop signal S5 output from a yarn break sensor (not shown) that detects that the warp yarn 12 or the weft yarn 24 is cut. The main control device 50 receives a plurality of setting values T output from the setting value determining device 54 to be used for controlling the loom 10 or the like.

  The main controller 50 has a function of controlling the driving of the sending controller 52, the winding controller 74, the opening driving unit 38, and the main shaft driving unit 76 based on the command signal S8 to be output. Further, the delivery controller 52, the winding controller 74, the opening drive unit 38, and the main shaft drive unit 76 constitute a drive circuit for the weaving stage preventing device 78 of this embodiment.

  The delivery controller 52 outputs the output shaft of the delivery motor 34 based on the main shaft rotation angle θ, the set value T output from the set value determination device 54, the operation command signal S7 and the winding diameter D output from the main control device 50. Control the rotation of

  More specifically, during operation of the loom 10, the delivery controller 52 rotates the output shaft of the delivery motor 34 so that the warp tension maintains the target tension by the operation command signal S7 output from the main controller 50. Control. Further, the sending controller 52 is configured such that when the loom 10 is stopped, when the jogging reverse is performed, or when the loom 10 starts operating, the Fell control command, the jogging reverse command, the kickback command, or the like output from the main controller 50 is used. In response to the generation of each command signal S8, the rotation of the output shaft of the feed motor 34 is controlled to perform each weaving step prevention operation. The sending controller 52 directly receives setting values such as a feed amount, a return amount, and a kickback amount at the time of these Fel control commands and inching reverse rotation commands from a setting device as the set value determining device 54.

  The winding controller 74 controls the rotation of the output shaft of the winding motor 46 based on the main shaft rotation angle θ, the setting value T output from the setting value determining device 54 and the operation command signal S7.

  More specifically, the winding controller 74 outputs the output shaft of the winding motor 46 in synchronization with the rotation of the main shaft 42 of the loom 10 by the operation command signal S7 output from the main controller 50 during the operation of the loom 10. Control the rotation of Further, the winding controller 74 is configured to output the ferrule control command, the jogging reverse command, or the kickback command output from the main controller 50 when the loom 10 is stopped, when the jogging is reversed, or when the loom 10 is started. And the like, the rotation of the output shaft of the winding motor 46 is controlled to perform each weaving step prevention operation. The winding controller 74 directly receives setting values such as a feed amount, a return amount, and a kickback amount at the time of the fell control command and the jogging reverse command from a setting device as the setting value determining device 54.

  For example, the opening device 37 may be provided with a single motor that can be connected to the drive shaft of the opening drive unit 38. In this case, each of the eaves frames 18 can be brought into a closed state by opening the opening device 37 between the drive shaft of the opening drive unit 38 and the main shaft 42 of the loom 10 and operating an actuator such as a hydraulic cylinder. A leveling mechanism and the like are configured. During the operation of the loom 10, the opening driving unit 38 connects the drive shaft of the opening driving unit 38 to the main shaft 42 of the loom 10 to move the vertical frame 18 up and down. In addition, when the loom 10 is stopped, the opening driving unit 38 operates the actuator to perform the weaving stage preventing operation which is a leveling operation based on the leveling command signal S8 output from the main controller 50. Thus, the collar frame 18 is moved up and down to a position where the warp opening becomes the middle opening.

  The main shaft drive unit 76 controls the rotation of the output shaft of the main shaft motor 40 and the main shaft 42 based on the command signal S8 and the rotational torque signal S9 output from the main controller 50.

  More specifically, the spindle drive unit 76 is based on the operation command signal S7, the start torque command, and the start torque switching command output from the main control device 50 to perform the weaving stage preventing operation for a predetermined period from the start of operation. The output shaft of the main shaft motor 40, and thus the main shaft 42, is rotated with a high output torque, and the rotation speed of the main shaft 42 is increased to a high rotation speed in a short time to cause the rod 20 to strike. After a predetermined timing when the rotation speed of the main shaft 40 reaches the steady rotation speed, the main shaft drive unit 76 reduces the torque of the main shaft 42 to a torque necessary for maintaining the steady operation. Thus, the spindle drive unit 76 performs a series of drive controls.

  Further, when the loom 10 is stopped, the main shaft driving unit 76 stops the rotation of the output shaft of the main shaft motor 40 by turning off the operation command signal S1 output from the main control device 50. The spindle drive unit 76 changes the rotation of the output shaft of the spindle motor 40 to the jogging signal S2 or the reverse rotation signal S3 by the jogging signal S2 or the reverse rotation signal S3 output from the main control device 50 when the jogging reverse of the loom 10 is performed. Drive at low speed in the corresponding direction of rotation.

  When the work in progress of the fabric weaved by the loom 10 is changed, the worker performs the work of the loom 10 and sets the machine base condition corresponding to the new fabric in the setting device of the loom 10. At this time, the worker also sets the operation mode of the weaving step prevention operation as part of the operation. FIG. 3 shows a series of steps from inputting machine base conditions to starting a weaving operation.

  First, the operator operates the touch panel 56 as an input device of the set value determination device 54 to input the woven fabric conditions in the woven fabric 26 (ST101). An example of the screen 80 of the touch panel 56 at this time is shown in FIGS.

  In FIG. 4, a plurality of items relating to the warp yarn 12 as information relating to the woven fabric and display fields for the set values thereof are respectively displayed in the area A on the left side of the screen 80 of the touch panel 56. In addition, a numeric keypad for inputting numerical values is displayed in the area B on the right side of FIG. In the example shown in the figure, the operator first touches the “thread width” of the area A to display the numeric keypad on the screen 80, and uses the displayed numeric keypad to enter a state where the numeric value of the “thread width” is to be input. Show.

  FIG. 5 shows a state in which “190” is input as the value of “thread width” in FIG. Further, in the area A on the left side showing the information about the warp 12, as the information of the warp 12 from which the cover factor is calculated, the “total number” is “10000” and the “thickness” is “40”. The “thickness unit” indicates “English count” and the “kind” indicates “cotton yarn”.

  Note that recent looms have a function of detecting the load acting on the back roll as warp tension and controlling the amount of rotation of the warp beam 14 so that the detected warp tension maintains the tension set value. For this reason, for example, the above-described parameters as information on the warp 12 may be used to automatically determine the warp tension set value. More specifically, the tension set value S = unit tension per warp K1 × total number of warps × correction coefficient K2 can be calculated, and the correction coefficient K2 is a fabric type, fabric structure and cover described later. It is also possible to calculate by selecting by a factor.

  In the upper left region C of FIG. 5, “thickness” indicates a state in which “40” is input as information on the weft 24 as information on the woven fabric, and “thickness unit” indicates “English”. “Form number” and “Pumping density” indicate that “50” pieces / inch are selected and input, respectively.

  In the area D on the lower left side of FIG. 5, “woven fabric” is “1/1 (plain weave)” and “woven fabric name” is “span general”, which is information on the woven fabric or the type of woven fabric as information on the woven fabric. Each state is selected and input. Such a series of processes relating to display and input on the touch panel 56 is performed by the central processing unit 62 controlling the touch panel 56 with a program stored in the memory 60.

  As shown in FIG. 5, the operator inputs information about the woven fabric using the touch panel 56 as described above, and then presses the “step prevention automatic setting” button B1 on the screen 80 (ST102).

  When the “step prevention automatic setting” button is pressed on the touch panel 56, the central processing unit 62 uses the mathematical expression described below based on the input information input so far from the database 58 to determine the degree of thread insertion. Is calculated, and a set value that matches the items in the database 58 is searched based on the calculated cover factor (ST103).

  For this reason, the central processing unit 62 searches and determines the setting value of the setting mode of the weaving prevention operation that matches the input information related to the woven fabric, and displays it on the screen 80 of the touch panel 56 as shown in FIG. At the same time, the data is output to the main controller 50, the delivery controller 52, and the winding controller 74 via the port 64 (ST104).

  FIG. 6 is an example in which the operation mode of the weaving step prevention operation automatically determined in step ST104 is displayed on the screen 80, and the warp beam 14 or the clothing roll 28 is rotationally driven before the operation of the loom 10 is started. An example of the set amount in the kickback operation is shown.

  When the “send” button or “winding” button, which is a display key displayed on the screen 80, is pressed, the kickback amount corresponding to the pressed button is displayed in the area E. FIG. 6 shows the screen 80 of the touch panel 56 when the “Send” button is pressed.

  The “kickback mode” displayed on the screen 80 of the touch panel 56 indicates that “time control” depending on the stop time is selected, and the stop time is selected and inputted to “5” minutes. It is shown that. Further, a kickback mode that is controlled with a uniform kickback amount can be selected by an operation of the operator's touch panel 56 regardless of the stop time.

  Here, as shown in FIG. 7, the stop time indicates the time control switching timing in the kickback operation, and more specifically, regarding the stop time control of the kickback amount, as shown in FIG. For example, between the stop time “0” minutes and the set time “5” minutes, the function is determined by the reverse rotation amount 1, the reverse rotation amount 2, and the stop time set value, and increases in accordance with the increase of the stop time. The kickback reverse rotation amount is generated, and after 5 minutes of stopping time, the kickback reverse rotation amount of the reverse rotation amount 2 is generated regardless of the stopping time. However, a setting in which the kickback reversal amount is increased stepwise for each stop time is also conceivable. The same applies to the kickback forward rotation amount.

  “Normal rotation amount” and “reverse rotation amount” displayed on the screen 80 of the touch panel 56 indicate the normal rotation amount and the reverse rotation amount based on the weft insertion pick in the kickback operation.

  In addition, regarding the kickback operation, the function of setting the kickback amount independently for each cause of stoppage in the setting device and selecting the corresponding kickback amount according to the cause of stoppage occurring during the operation of the loom 10 have. In the illustrated example, the operator can set the warp stop independently at the time of weft stop (occurrence of blowout, etc.), at the time of APR (weft insertion error automatic weft removal device operation), and the setter.

  After determining the operation mode of the weaving step prevention operation, the operator performs a trial weaving operation as necessary, and determines the effect of the weaving step prevention operation according to the determined set value, that is, whether or not the weaving step is generated. Check (ST105).

  When the operator determines that a weaving step has occurred as a result of the trial weaving, the searched setting value is set to the automatically determined setting value by operating the screen 80 of the touch panel 56 shown in FIG. The corrected value is output as a new set value T to the sending controller 52 or the winding controller 74 which is the corresponding drive circuit.

  In addition to setting for the weaving stage prevention device 78, the operator sets and adjusts other machine base conditions, and then presses the operation button 66 to cause the loom 10 to start the weaving operation (ST106).

  Table 1 shows an example of the database 58 used for determining the operation mode of the weave prevention device 78. Table 1 shows the operation mode of the weaving step prevention device 78 according to the value of the cover factor related to the information about the woven fabric.

  More specifically, Table 1 is an example in which the cover factor is divided into four stages, and the operation mode of one or more weaving step preventing operations is recorded as the database 58 for each of the four sections of the cover factor. For example, even if the cover factors are different, the operation modes may be set to be the same, such as the opening leveling of the opening drive unit 38 and the kickback operation of the winding controller 74, or a plurality of operation modes. You may set so that at least 1 or more may differ.

  Here, for example, the weaving step prevention operation of the loom 10 includes the following, the operation mode corresponding to the cover factor is shown for reference, and the relationship between the operation mode item of the database 58 and the cover factor is shown below. explain.

  [Fell Control]

  Fell control refers to an operation of rotating the warp beam 14 or the winding roll 28 by a predetermined amount during the coasting rotation of the main shaft 42 when the operation of the loom 10 is stopped, and displacing the position of the front of the weaving 22 forward. By this operation, the striking force between the time when the operation of the loom 10 is stopped and the time when the loom 10 is started is reduced to prevent the occurrence of the twill pillow, or the warp tension is lowered and the loom 10 is stopped. This has the effect of preventing the occurrence of weaving steps due to the elongation of warp yarns.

  The database 58 systematically configures the presence / absence of the operation, the displacement amount (retraction amount) of the position of the weave 22 and the cover factor CF for each apparatus.

  [Jog feed / reverse reverse]

  Inching feed / reverse return means that after the operation of the loom 10 is stopped, when the rotation of the main shaft 42 is jogging / reversing and passes through a predetermined angle, the warp beam 14 or the winding roll 28 is rotated forward by a predetermined amount. Rotation in the direction or reverse direction. When the operator performs inching / reversing, the main controller 50 causes the warp beam 14 or the clothing roll 28 to rotate forward or reverse by an amount corresponding to one pick to advance or retract the position of the front fabric 22. Thus, the position of the cloth 22 is maintained at an appropriate position.

  The database 58 systematically configures the displacement amount (feed amount / return amount) of the position of the fabric 22 and the cover factor CF for each apparatus.

  [Leveling of opening device]

  The leveling of the opening device 37 means that the weaving stage prevention device 78 unsynchronizes the eaves frame 18 with the main shaft 42 of the loom 10 until the operator repairs the cause of the stoppage. For example, it refers to an operation of driving the reed frame through an actuator such as a hydraulic cylinder (not shown) to close the opening of the warp 12 as a middle opening.

  For example, when the loom 10 is weaving twill, satin weaving, etc., even if it is cross timing, one of the reed frames 18 is in the upper and lower positions. Therefore, when the loom 10 has been in a stopped state for a long period of time, the warp yarn 12 and the woven fabric 26 are in a state where an opening is formed, and the front fabric 22 and the weaving port are in the opening direction (the moving direction of the warp yarn 12, that is, Direction). In order to prevent such a weaving step from occurring, the leveling operation of the opening device 37 is performed.

  When the leveling operation of the opening device 37 is performed, it is possible to prevent the warp 12 from being moved and the position movement of the front weave 22 due to the unbalanced tension between the upper and lower warps 12 can be prevented.

  The database 58 systematically configures the presence / absence of leveling operation of the opening device 37 or the opening amount of the eave frame 18 and the cover factor CF.

  [kickback]

  Prior to the start of the loom 10, the warp beam 14 or the winding roll 28 is rotated in the forward or reverse direction by a predetermined amount, and the position of the weaving front 22 is displaced in the front-rear direction in the warp running direction. As a result, it is possible to compensate for the excess and deficiency of the striking force in the transient rotation state for a predetermined period from when the loom 10 is started.

  The database 58 systematically configures the order of forward rotation and reverse rotation, the rotation amount, the rotation speed, and the cover factor CF for each apparatus.

  Note that the setting value T derived from the database 58 for the above-mentioned “Fell control”, “Jogging feed / reverse rotation”, and “Kickback” has a weft insertion pick as a scale. Therefore, in practice, the delivery controller 52 or the winding controller 74 determines from the moving length with respect to the warp yarn 12 or the woven fabric 26 based on the values such as the weft driving density and the mechanical coefficient and the set values. The driving amount of the delivery motor 34 or the winding motor 46 is calculated, and the warp beam 14 or the clothes winding roll 28 is driven to rotate. However, the setting value stored in the database 58 does not necessarily have to be based on the weft insertion pick, and can be stored as the moving length of the warp or the woven fabric.

  [How to start]

  The worker selects, for example, the procedure shown in the following (A), (B), or (C), and starts (starts up) the loom 10 until the loom 10 is stopped and restarted.

  (A) Normal startup method

  First, after the loom 10 is stopped due to the cause of the stoppage, the main shaft 42 is reversely rotated at a low speed to a standby angle (300 °) at which the warp opening is closed.

  In order to eliminate the cause of the stoppage, the operator performs necessary repairs such as removing the weft insertion error and repairing the thread breakage by performing an inching operation and a reverse operation, and the spindle 42 is positioned at the standby angle (300 °). Let Next, the spindle motor 40 is started by operating the operation button of the loom 10, and the weft insertion is started immediately after the angle θ of the spindle 42 passes through 0 ° and strikes.

  (B) Back start (empty start)

  After the cause of the loom 10 being stopped, the main shaft 42 is reversed to the standby angle (300 °) at which the warp opening is closed, and the cause of the stop is repaired to bring the main shaft 42 to the standby angle (300 °). It is the same as the normal activation method of (A) above in that it is positioned. However, by operating the operation button of the loom 10, first, the main shaft 42 is reversely rotated at a low speed from the standby position (300 °) to a predetermined start angle.

  Next, the main shaft motor 40 is started and the wetting is not performed until the standby angle (300 °) when the operation is started (so-called idle driving) is performed, and then the angle θ of the main shaft 42 is 0 °. After we pass and strike, weft insertion begins.

  (C) 60 ° start method

  From the occurrence of the stoppage cause until the loom 10 is stopped, it is the same as each of the start methods (A) and (B). However, it is different in that the main shaft 42 is reversed to a standby angle (60 °) that avoids beating.

  Thereafter, in order to remove the cause of the stoppage, the operator performs necessary repairs by performing an inching operation or a reverse operation, and positions the main shaft 42 at the standby angle (60 °). Next, by operating the operation button of the loom 10, the spindle motor 40 is started, and the weft insertion is started immediately.

  The database 58 systematically configures the selected start method and the cover factor CF. In addition, the database 58 systematically includes a selection method of a start method, an idle driving period (reverse rotation stop angle, the number of empty picks), one or more angle timing setting values such as a standby angle and the predetermined angle, and a cover factor CF. You may comprise.

  [Insert one line]

  After the operation button 66 is operated, the warp thread 12 is moved at a low speed to the vicinity of a predetermined angle (120 to 200 °) at which the warp thread 12 is opened, and then the weft insertion device is operated to insert one weft thread 24. The main shaft 42 is moved to the standby angle. Thereafter, the spindle motor 40 is activated and weft insertion is started in accordance with the selection method of the start method described above.

  The database 58 systematically configures the presence / absence of a single weft insertion operation and the cover factor CF.

  [Starting torque]

  This indicates the starting torque when starting the spindle motor 40 after the operation button is operated, and the starting torque can be changed by selecting the magnitude of the power (voltage) supplied when starting the spindle motor 40. When a thin stage (a phenomenon in which the weft density becomes coarse) occurs, the loom 10 is rotated at a higher torque than usual when the loom 10 is started to increase the beat-up torque at the start. Thereafter, the rotation is continued while being suppressed to a normal torque from the viewpoint of power saving.

  The database 58 systematically configures the magnitude of the starting torque and the cover factor CF.

  [Starting torque switching control]

  In the “starting torque” control described above, it refers to the time to return to the normal torque after starting the spindle motor 40. By setting the slow speed at which the starting torque is returned to the normal torque, the striking force after starting the spindle motor 40 can be switched by the synergistic effect with the “starting torque” control.

  The database 58 systematically configures the switching timing (including the number of picks) for returning from high torque to normal torque and the cover factor CF. Here, the switching timing is preferably based on the elapsed time from the reference angle or the spindle angle.

  The weaving step preventing operation may be at least one of the above listed ones, and other than the above listed ones may be adopted or combined with the above listed ones. When a plurality of weaving step prevention devices 78 are used, the operation modes of the plurality of weaving step prevention devices 78 may be different.

  Here, the cover factor CF representing the degree of thread insertion can be expressed as cover factor CF = warp cover factor CFw + weft cover factor CFp. However, the warp cover factor CFw = A × 2.54 / √B and the weft cover factor CFp = C / √D. Each parameter as input information for calculating the cover factor, that is, parameter A is the number of warps per unit weaving width length, parameter B is the warp thickness (count), parameter C is the set driving density, and parameter D is The thickness (count) of the weft 24 is shown.

  Specifically, the parameter A is obtained by the total number of warps / the threading width. Therefore, the parameter A is calculated based on the total number of warps and the threading width, which are input information related to the warp.

  The operator inputs the parameters A, B, C, and D, and causes the central processing unit 62 constituting the set value determining device to obtain a cover factor from the input numerical values. However, instead of making such a calculation, it is also conceivable that the operator directly inputs the cover factor itself obtained by calculation through the touch panel 56.

  Here, the cover factor is a numerical value of the degree (degree) of thread penetration. In other words, the cover factor reflects the difficulty of driving the weft 24 as it is.

  The so-called weaving stage (that is, the stopping stage that occurs when the loom is stopped by the present invention) is a phenomenon in which the density of the weft yarns 24 is not uniform. On the other hand, the cover factor is a numerical value of the degree (degree) of yarn inclusion. In other words, the cover factor reflects the difficulty of driving the weft 24 as it is.

  According to the research by the inventors, a woven fabric having a coarse density (small CF value) has a final weaving density by just beating the weft yarn 24 inserted once. However, a high-density (large CF value) woven fabric has a final woven density by striking the wefts 24 that have been inserted several times.

  The inventors have found the relationship between the cover factor and the beating to obtain a predetermined weft density, and between the operation mode of the weaving step prevention device 78 and the cover factor CF representing the degree of thread jamming. I found out there was a correlation.

  For this reason, as information for setting the operation mode of the weaving step prevention device 78 suitable for the specification of the fabric, attention is paid to the cover factor CF, that is, the value of the cover factor CF (in other words, the wetting of the weft 24). It is extremely preferable and reasonable to set the operation mode of the weaving step prevention device 78 in accordance with the degree of difficulty of intrusion.

  In this way, the setting value of the operation mode of the weave prevention operation corresponding to the information related to the woven fabric specifications is searched from the database 58 based on the input information related to the specifications of the woven fabric, and the searched weave prevention is performed. By determining the operation mode of operation and automatically setting it, the desired weaving step prevention operation, such as moving the pre-weaving position, increasing the hammering torque, or performing multiple strikes Can do. Even a worker who has little experience can perform the weaving step prevention operation in an operation mode that takes into account the degree of thread insertion, so that a high-quality fabric can be efficiently produced.

  The above set value determination device 54 can be configured as follows.

  For example, as information on the specifications of the woven fabric, in addition to the above-mentioned cover factor, the type of fabric (span general, base fabric, wool fabric, etc.), the type of fabric structure (1/1 plain weave, 2/1, 3/1 ... Twill weave, 4/1, 5/1 ... satin weave, change weave, dobby pattern, etc.).

  Therefore, in contrast to the systematic configuration of the cover factor and the operation mode as shown in Table 1, as shown in Table 2, the database 58 may be systematically configured by adding a fabric type and a fabric structure. . Needless to say, the systematic configuration as shown in Table 1 may be any one of the above two, more preferably both, as information relating to the specification of the woven fabric.

  If the central processing unit 62 cannot search for the set value T that matches this information as a result of searching the database 58 based on information relating to the specifications of the woven fabric, the central processing unit 62 searches again under conditions close to this information. Then, the set value T calculated by the interpolation calculation from the plurality of retrieved operation modes may be output.

  Instead of using the database 58, the central processing unit 62 may be configured to calculate the set value T using a function that is incorporated in the memory 60 in advance and uses information related to the specification of the woven fabric as a parameter.

  The set value determining device 54 may be provided exclusively for the weaving step preventing device 87 instead of being provided so as to be used as the setting device of the loom 10.

  Further, the set value determining device 54 may be configured by a computer shared by many looms 10. In this case, for example, the setting device of each loom 10 and the computer are communicably connected via a wired or wireless network. The output information output from the set value determination device 54 may be displayed on the display unit of the setting device of the loom 10.

  The set value determination device 54 may be configured by a personal computer provided in the management room of the loom 10. In this case, the set value determination device 54 may print out the output information on paper, and the operator may set the weave prevention device 78 based on the output information printed on the output paper.

  The embodiment described above can be modified as follows.

  The database 58 for storing the cover factor and the setting value of the operation mode of the weaving step prevention operation is provided in advance by the weaving machine manufacturer, but then the user such as the manufacturer or the weaving factory modifies the database based on the weaving record. It is more preferable to configure such that the shortage of the database can be added.

  For the loom targeted by the application of the present invention, the weaving conditions such as the weft yarn type, the weft driving density, and the weaving structure are not limited to the loom that always weaves in a single weaving condition during the weaving operation, for example, the main shaft of the loom The present invention may be applied to a loom in which any one of the above weaving conditions is switched according to the rotation. In this case, based on the input information related to the specification of the weaving cloth that is switched for each weft insertion pick, the operation mode of the weaving step prevention operation corresponding to the weaving conditions is set in advance for each weft insertion pick, and when the loom stops The corresponding weaving step prevention operation may be executed.

  The cover factor CF of the present embodiment is a value obtained by adding two basic cover factors, that is, a value obtained by adding the warp cover factor CFw and the weft cover factor CFp. Focusing on one of the two cover factors (that is, only the warp cover factor CFw or only the weft cover factor CFp), the operation mode of the weaving step prevention operation may be determined corresponding to this. .

  The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

It is the schematic of the loom provided with the setting value determination apparatus concerning this invention. The surrounding block diagram of the weaving step prevention apparatus of the loom shown in FIG. 1 is shown. It is a flowchart figure which shows a series of processes until the weaving operation is started from the time of input of machine base conditions using the set value determination device of the present invention. It is a figure which shows the screen at the time of inputting input information into the setting value determination apparatus which concerns on this invention. It is a figure which shows the screen following FIG. FIG. 6 is a screen subsequent to FIG. 5, showing a kickback amount that is one of the setting values determined by the setting value determination device according to the present invention. It is a schematic diagram for demonstrating the setting of the kickback amount corresponding to stop time about the kickback operation | movement as the weaving step prevention operation | movement concerning this invention.

Explanation of symbols

θ Spindle angle CF Cover factor CFp Weft cover factor CFw Warp cover factor S1 Operation signal S2 Jogging signal S3 Reverse signal S4 Stop signal S5 Stop signal S7 Operation command signal S8 Command signal S9 Rotation torque signal 10 Weaving machine 12 Warp DESCRIPTION OF SYMBOLS 14 Warp beam 16 Back roller 18 Reed frame 20 Reed 22 Weaving 24 Weft 26 Weaving cloth 27 Guide roll 28 Clothes roll 30 Press roll 32 Fabric winding beam 34 Sending motor 36 Rolling diameter detector 37 Opening device 38 Opening drive part 40 Main shaft motor 42 Spindle 44 Strike drive unit 46 Winding motor 48 Encoder 50 Main controller 52 Sending controller 54 Set value determination device 56 Touch panel 58 Database 60 Memory 62 Central processing unit 64 Port 66 Operation button 68 Inching button 70 Reverse Roll button 72 Stop button 74 Winding controller 76 Spindle drive unit 78 Weaving step prevention device

Claims (3)

A set value determination device including an input device to which information on a woven fabric is input and an output device that determines and outputs a set value of an operation mode of the weaving step prevention device of the loom,
The information on the woven fabric includes a cover factor indicating the thread penetration of the woven fabric, or a value based on the cover factor,
The output value determining apparatus includes determining and outputting the set value based on at least a cover factor. The base value of the cover factor as information about the woven fabric includes the number of warps per unit woven width, the thickness of the warp, the weft density and the value of the weft,
2. The output device according to claim 1, wherein the output unit includes calculating a cover factor based on a value that is the basis of the cover factor, and determining and outputting the set value based on the calculated cover factor. Setting value determination device. The information on the woven fabric further includes information related to the woven fabric type or the woven fabric structure,
The output device includes determining and outputting a setting value of the operation mode based on at least one information among the information related to the fabric type or the fabric structure and the cover factor. 2. The set value determination device according to 2.

Images