JP2013028870A - Weaving method and weaving device for loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of electrical troubles in an inverter caused by an excessive regenerative voltage generated from a main shaft motor driving a main shaft during the reduction of the rotational speed of the main shaft when a weaving condition is changed, and to prevent the deterioration in the quality of a woven fabric in a loom for weaving a fabric including at least two woven parts woven in different weaving conditions, where the rotational speed of the main shaft is set in each of the weaving conditions and is changed when the weaving condition is changed during continuous operation.SOLUTION: In a weaving method for the loom, when a weaving condition is changed during continuous operation of the loom, and at the same time, the rotational speed of the main shaft is reduced to a set rotational speed corresponding to the weaving condition after the change, the reduction of the rotational speed of the main shaft is performed over a deceleration period of at least two loom cycles. Blank beating is performed without weft insertion in each loom cycle during the deceleration period.

Description

  The present invention is a loom for weaving a woven fabric including two or more weaving portions woven under different weaving conditions, wherein the number of rotations of the main shaft is set in each weaving condition, and the weaving conditions can be changed during continuous operation. The present invention also relates to a weaving method and a weaving apparatus in a loom that changes the rotational speed of a main shaft.

  The “weaving conditions” referred to in this application refers to a woven structure (opening pattern of warps constituting the woven pattern), a weft structure (type and / or combination of wefts), and a weft density (weft per unit weaving length). The number of rotations), the set rotation speed of the loom, and the like. In addition, “different weaving conditions” refers to those in which at least one of the above is different.

  In the loom, weaving is performed by operating a corresponding weaving-related apparatus according to such weaving conditions. However, the “weaving-related device” mentioned here is a device that is provided on the loom and functions for weaving. For example, an opening device, a weft insertion device, a delivery device, a winding device and the like are included. The main shaft of the loom also functions as a weaving-related device including its drive device (main shaft motor or the like).

  Further, in the loom, a weaving pattern corresponding to the weaving condition is set in order to operate the corresponding weaving related apparatus according to the weaving condition. Incidentally, the weaving pattern is a pattern in which the driving mode of each target weaving-related device is set for each loom cycle, and is set over the loom cycle for one repeat of the fabric structure in the order of weaving. In the technical field of looms, it is common practice to use a weaving pattern so configured to control the operation of weaving related equipment.

  In addition, the “driving mode” mentioned above specifically refers to the setting of whether the upper opening position or the lower opening position in each loom cycle for each of the rib frames in the case of the opening device, For example, in the case of a multi-color weft insertion device, setting of the weft yarn to be inserted in each weaving cycle is performed. In some cases, the weft density is set for each loom cycle, and the winding device and the feeding device are controlled based on the setting. In this case, the setting of the weft density is the driving mode.

  The “one loom cycle” mentioned above corresponds to one rotation (0 ° to 360 °) of the main shaft during continuous operation of the loom. That is, during normal weaving, a single weft insertion (weft insertion of the weft thread → hammering) is achieved by a series of operations for each rotation of the main shaft of each device on the loom, so that during the continuous operation of the loom One rotation of the main shaft is referred to as “one loom cycle” (one loom cycle). However, this “one loom cycle” may be referred to as “one weaving cycle” or simply “one loom” cycle. Furthermore, in the weaving pattern, weaving proceeds, so it is also referred to as “one weaving step” or “one step”.

  Furthermore, “one repeat of the woven fabric structure” mentioned above is a portion for forming one unit of the woven pattern in the woven fabric. More specifically, for example, when the woven pattern constituting the woven fabric is formed by a combination of two or more woven parts woven under different weaving conditions (combination of woven structure, weft configuration, weft density, etc.) When the weaving part is formed by repeating unit woven patterns that are woven under the respective weaving conditions, the number of loom cycles required to weave the weaving unit (woven pattern) formed by the combination of the weaving parts is the textile structure. The number of loom cycles for one repeat. However, if the woven pattern of the woven fabric is composed of only one type of unit woven pattern under one type of weaving condition, that is, if the woven pattern is composed of only one woven portion, the unit woven pattern is The number of loom cycles required to form (the number of repeats) is the number of loom cycles for one repeat of the fabric structure.

  As an example of the prior art in the loom as described above, Patent Document 1 described below describes a loom entitled “Rotation speed control method and apparatus thereof”.

  According to this document, the required braking force is calculated and required for deceleration in changing the rotational speed of the loom main shaft in response to the change in the weaving conditions during continuous operation and in the deceleration control when the rotational speed is changed. It is described that the time is shortened.

Japanese Patent Laid-Open No. 11-93043

  As described in the prior art, it is known that during the continuous operation of the loom, weaving is performed by changing the number of revolutions of the loom main shaft in accordance with changes in the weaving conditions and the like. Moreover, in a general loom in recent years, a main shaft motor that drives a main shaft is driven via a main shaft driving unit (inverter), and the rotation speed change operation as described above is performed by changing the output frequency of the inverter to change the main shaft motor. This is done by changing the rotation speed.

  Further, as described in the prior art, in the deceleration control accompanying the change in the rotational speed, an attempt is made to decelerate the main shaft to the set rotational speed as quickly as possible. In recent looms, the change of the number of rotations is generally completed within one rotation of the main shaft.

  By the way, depending on the woven fabric, there is a large difference in the set rotation speed of the main shaft set for each of the weaving conditions that are changed during the continuous operation of the loom, and the rotation speed of the main shaft is changed as the weaving conditions change. It may be necessary to slow down significantly.

  For example, in weaving under each weaving condition, the type (thickness) of the weft thread to be inserted and the number of weft insertion devices (length measuring storage device, main nozzle for weft insertion, sub nozzle, etc.) used for the weft insertion, etc. Due to the difference in setting, weaving can be performed by operating the loom at high speed under one weaving condition, but weaving cannot be performed unless the loom is operated at low speed under the other weaving condition. . Therefore, in such a case, the set rotational speed of the main shaft set in one weaving condition can be set to a high rotational speed, whereas the set rotational speed of the main shaft set in the other weaving condition is The rotation speed must be low, and a large difference in the set rotation speed will occur between the two weaving conditions.

  As described above, in the case where there is a large difference in the set rotational speed of the main shaft in the two weaving conditions used for weaving, and when the rotational speed of the main shaft is greatly decelerated in accordance with the change in the weaving conditions, If the spindle is decelerated within a short period of time, such as within one revolution of the spindle, an excessive regenerative voltage generated from the spindle motor that drives the spindle causes an electrical problem in the inverter (decrease in frequency output function due to overvoltage trip) / Stop) will occur.

  In addition, although it is conceivable to decelerate at a degree of deceleration that does not cause electrical trouble as described above, in that case, if we try to achieve deceleration in the shortest possible time based on the conventional idea, weaving Due to the large set speed difference before and after the change of the condition, the deceleration amount per one rotation of the main spindle is still large (although no electrical trouble occurs). In that case, if weaving (weft insertion) is performed in the same way as during normal continuous operation, there is a high possibility that weft insertion will not be performed properly (ends abnormally), and weaving becomes unstable. The quality of the woven fabric is reduced.

  The present invention is a loom for weaving a woven fabric including two or more weaving portions woven under different weaving conditions in consideration of the above circumstances, and the rotational speed of the main shaft is set in each weaving condition, In a loom that changes the rotation speed of the main shaft in accordance with the change of the weaving conditions during operation, the above-mentioned electric trouble does not occur at the time of deceleration of the rotation speed of the main shaft due to the change of the weaving conditions, and weaving The purpose is to prevent degradation of the quality of the fabric produced.

  The weaving method in the loom of the present invention is a loom that weaves a woven fabric including two or more weaving parts woven under different weaving conditions, and the rotational speed of the main shaft is set in each weaving condition, and during the continuous operation It is premised on a loom that changes the number of revolutions of the main shaft as the weaving conditions change.

  And, in the weaving method of the present invention in such a loom, during the continuous operation of the loom, when the speed of the spindle is reduced to the set speed corresponding to the changed weaving conditions with the change of the weaving conditions, The deceleration is performed in a deceleration period of two or more loom cycles, and an idle driving operation without weft insertion is performed in each loom cycle during the deceleration period.

  In the weaving method, the deceleration period is not specified except that it is two or more loom cycles, but as a suitable example for determining the deceleration period, the deceleration period is the amount of change in the set rotational speed (rotation The difference may be determined based on the number of loom cycles for one repeat of the fabric structure under the weaving conditions after the change, and a preset allowable deceleration amount per loom cycle.

  The weaving apparatus according to the present invention corresponding to the weaving method is a loom that performs weaving by operating a corresponding weaving-related apparatus according to a weaving condition including a set rotational speed that is a set value of the rotational speed of a main shaft, A storage device in which the weaving conditions are set and stored in advance, and a drive control device including a spindle drive unit that drives the spindle and a weft insertion control unit that controls weft insertion, and the set rotational speed is changed. A weaving apparatus in a loom that performs weaving by changing the rotation speed of the main shaft during continuous operation in accordance with the change in weaving conditions is assumed.

  In the weaving apparatus in such a loom, the drive control device can change the set rotational speed in the deceleration direction in accordance with the change in the weaving condition, so that the main shaft driving unit can perform two or more loom cycles. Control is performed to reduce the rotation speed of the spindle to the set rotation speed in the changed weaving conditions over the deceleration period, and the weft insertion control unit stops the weft insertion in each loom cycle during the deceleration period. Control is executed.

  As a preferred example of the weaving device, an allowable deceleration amount per loom cycle is stored in advance in the storage device, and the drive control device changes the set rotational speed (rotational speed difference) and the weaving after the change. The deceleration period may be determined based on the number of loom cycles of one woven fabric structure under the conditions and the allowable deceleration amount.

  According to the weaving method and the weaving apparatus in the loom according to the present invention, when the rotational speed of the main shaft is changed in the deceleration direction in accordance with the change of the weaving conditions, the rotational speed of the main shaft is reduced over the deceleration period by two or more loom cycles. Since the speed is reduced to the set rotational speed corresponding to the next weaving condition, it is possible to avoid the occurrence of an electrical trouble in the part that controls the driving of the main shaft due to the rapid speed reduction. In addition, during the deceleration period, idle driving that does not perform weft insertion is performed, so the amount of deceleration for each loom cycle (every spindle revolution) can be increased to a level that allows weft insertion (for example, about 100 rpm). The deceleration period may be shortened as much as possible within a range in which the above-described electrical trouble does not occur.

  Further, the deceleration period is determined based on the set rotational speed difference before and after the change of the weaving condition and the set allowable deceleration amount, and the loom cycle of the fabric structure 1 repeat in the changed weaving condition in the determination of the deceleration period. In consideration of the number, it is possible to omit the setting of the weaving pattern for the idle driving process, and the setting of the weaving conditions is facilitated.

It is explanatory drawing which shows the whole structure of the loom to which this invention is applied. It is explanatory drawing which mainly shows the weft insertion apparatus of the loom to which this invention is applied. It is a block diagram which mainly shows the structure of the drive control apparatus of a loom. It is a block diagram which mainly shows the structure of a winding control part. It is a block diagram which mainly shows the structure of a transmission control part. It is explanatory drawing which shows the structure of the textile fabric corresponded for textile fabric 1 repeat. It is explanatory drawing which shows the setting screen of a woven pattern weaving pattern. It is explanatory drawing which shows the setting screen of weaving process information. It is a block diagram which mainly shows the structure of the main control part.

  FIG. 1 shows an overall configuration of a loom 1 to which the present invention is applied, particularly a part related to a warp 2 feeding operation and a fabric 8 winding operation. In FIG. 1, a large number of warps 2 are fed out as a sheet form from a warp beam 3, passed through a plurality of reeds 5, 5,... And reeds 6 through a back roll 4. 2 reaches the pre-weave 9 of the fabric 8 while forming the opening 7. A tension sensor 62a is incorporated at the support position of the back roll 4, and the tension value of the warp 2 is detected from the resultant force of all the warps 2 acting there.

  On the other hand, the weft 10 is weft-inserted into the openings 7 of the upper and lower warps 2, 2, and then beaten on the pre-weave 9 by the beating motion of the reed 6, and becomes a structure of the fabric 8 together with the warp 2. The fabric 8 is wound around the fabric roll 15 via the guide roll 11, press roll 12, clothing roll 13, and press roll 14.

  The opening movement of the reed 5 and the striking movement of the reed 6 are interlocked with the rotation of the main shaft 16 of the loom 1. The main shaft 16 is driven by a main shaft motor 16 a, and the main shaft motor 16 a is controlled by a main shaft driving unit 43. The rotation of the main shaft 16 is converted into a reciprocating motion (opening motion) of each reed frame by an electronic dobby type opening device 17 and transmitted to each reed 5 and converted to a reciprocating motion by a striking motion conversion device (not shown). And transmitted to 筬 6.

  The warp beam 3 is driven by a delivery motor 3a, and these constitute the main part of the delivery device. The clothing roll 13 is driven by a winding motor 13a, and the main part of the winding device is constituted by these. The sending motor 3a and the winding motor 13a are controlled by a sending control unit 47 and a winding control unit 46.

  Next, FIG. 2 shows an air jet loom equipped with a multicolor weft insertion device as an example of a loom 1 to which the present invention is applied. In the illustrated example, a two-color weft insertion device for weft insertion of two types of weft yarns 10 is shown. However, in practice, a three-color weft insertion device for weft insertion of three types of weft yarns 10 is used. This will be explained based on the premise.

  The three types of wefts 10 are pulled out from the respective yarn feeders 22 supported by the respective yarn feeder stands 21, and are guided to the inside of the yarn winding arm 24 of, for example, a drum-type length measuring and storage device 23 to be in a stationary state. The drum 25 is wound around the outer peripheral surface of the drum 25 by the rotational movement of the yarn winding arm 24 while being locked by the locking pin 26 on the outer peripheral surface of the drum 25. Accordingly, the weft 10 having a length necessary for one weft insertion is wound around the outer peripheral surface of the drum 25 and stored until the weft 10 is inserted. The yarn winding arm 24 is driven by a drive motor 27.

  At the weft insertion start timing, when the latch pin 26 corresponding to the weft thread 10 selected by the weft insertion control unit 45 is driven by the actuator 28 and retracts from the outer peripheral surface of the drum 25, it is wound around the outer peripheral surface of the drum 25. The weft 10 having a length necessary for one weft insertion is in a state where it can be unwound on the drum 25. The weft thread 10 passed from the drum 25 to the main nozzle 29 for weft insertion is unwound from the drum 25 and inserted by the main nozzle 29 performing an injection operation.

  For the weft insertion operation, the main nozzle 29 performs a single weft insertion by injecting pressurized air together with the weft 10 into the openings 7 of the upper and lower warps 2 and 2 during the injection period from the start of injection to the end of injection. A weft 10 having a necessary length is inserted into the opening 7. As a result, the weft 10 flies along the flying path in the opening 7 and is inserted into the opening 7.

  The pressure air is supplied from the pressure air source 31, adjusted to an appropriate air pressure by the pressure adjustment valve 32, and then supplied to the main nozzle 29 via the electromagnetic opening / closing valve 33. The electromagnetic on-off valve 33 is controlled by the weft insertion control unit 45.

  During the weft 10 traveling process, the multiple sub-nozzles 34 fly in the opening 7 by injecting the pressure air in a traveling manner in harmony with the weft 10 traveling in the traveling direction of the weft 10. The running weft 10 is assisted in the weft insertion direction. More specifically, the multiple sub-nozzles 34 are arranged at intervals along the travel path of the weft 10 and are connected to a common electromagnetic opening / closing valve 35 by a plurality. Thus, one group is formed by the plurality of sub-nozzles 34 connected by the common electromagnetic on-off valve 35. The pressure air of the sub nozzle 34 is supplied from the pressure air source 31, adjusted to an appropriate air pressure by the pressure adjustment valve 36, and then supplied to the sub nozzles 34 of each group via the electromagnetic opening / closing valve 35.

  When the weft yarn 10 is normally inserted by the injection operation of the main nozzle 29 and the sub nozzles 34 of the plurality of groups, the weft yarn 10 is beaten on the pre-weaving 9 of the fabric 8 by the hammering motion of the kite 6, and the fabric 8 and then cut by the yarn feed cutter 37 on the weft insertion side, and cut off from the weft yarn 10 inside the main nozzle 29. Whether or not weft insertion has been performed normally is determined based on signals from the feeler heads 38 and 39 that detect the arrival of the weft 10.

  The drive motor 27 of the length measuring storage device 23, the actuator 28 of the length measuring storage device 23, the electromagnetic on-off valve 33 corresponding to the main nozzle 29, the electromagnetic on-off valve 35 corresponding to the sub nozzle 34, and the pressure adjusting valves 32, 36 are Both are controlled by the weft insertion control unit 45.

  FIG. 3 shows the configuration of the drive control device 40. In the present embodiment, the storage device is included in the drive control device 40. The drive control device 40 includes a main control unit 41, a drive control unit 42, a main shaft drive unit 43, an opening drive unit 44, a weft insertion control unit 45, a winding control unit 46, and a delivery control unit 47. The setting values and parameters required for control by these control units and drive units are written into the memory built in each drive unit and each control unit by the input setting unit 48 connected to each drive unit and each control unit. Is remembered.

  In FIG. 3, an angle detector 16b is connected to the main shaft 16 of the loom 1, and a main shaft angle signal (a signal of the rotation angle θ) output from the angle detector 16b is sent to the main control unit 41, drive control. The control unit 42, the spindle drive unit 43, the weft insertion control unit 45, the take-up control unit 46, and the feed control unit 47 are used to control the weaving related devices that are driven by the control unit and the drive unit.

  An operation button (start button), a stop button, an inching / reversing button (not shown) that are manually operated are connected to the main control unit 41, and the main control unit 41 is operated by each of these buttons. Based on the input signal that is output, the loom operation signal or the like corresponding to the input signal is sent to the drive control unit 42, the spindle drive unit 43, the weft insertion control unit 45, the winding control unit 46, or the sending control unit 47. Output. The loom operation signal referred to here is a normal operation signal when the operation button is operated, and a stop signal when the stop button is operated. Further, in the case of manual operation of the inching / reversing button, it is a signal corresponding thereto. Furthermore, the main control unit 41 also drives each drive even when a signal is input from a detector that detects a weaving failure, such as a weft stop signal output when a weft insertion failure is detected by the feeler heads 38 and 39. A stop signal is output to each unit and each control unit. And each drive part and each control part control the drive of the weaving related apparatus made into object according to the loom operation signal from the main control part 41. FIG.

  The drive control unit 42 includes a storage device 42a that is a built-in memory, and the weaving pattern written by the input setting device 48 is stored in the storage device 42a, as will be described in detail later. Further, the drive control unit 42 grasps the number of cycles (number of steps) of the loom based on the signal of the rotation angle θ output from the angle detector 16b, and performs each step of the weaving pattern according to the number of cycles of the loom. The set set value is output to each drive unit and each control unit. More specifically, the drive control unit 42 sends a speed switching signal (or weft density signal) to the spindle driving unit 43 as a signal corresponding to a set value set in the weaving pattern in each step (weaving machine cycle), and opens the opening frame. The selection signal is output to the opening drive unit 44 of the opening device 17, the weft selection signal is output to the weft insertion control unit 45, and the weft density signal is output to the winding control unit 46 and the delivery control unit 47.

  The weft insertion control unit 45 has set (stored) control set values input as data from the input setting unit 48, and when the weft selection signal is output from the drive control unit 42, the weft selection signal The corresponding electromagnetic on-off valves 33 and 35, the actuator 28 of the locking pin 26, the pressure adjusting valves 32 and 36, and the like are operated in order to insert the weft 10 according to (yarn type of the weft 10). More specifically, in the weft insertion control unit 45, the operation timing of the electromagnetic on-off valves 33 and 35, the actuator 28, etc. is set for each weft 10 corresponding to the rotation angle θ of the main shaft 16. Operates the electromagnetic on-off valves 33 and 35, the actuator 28, and the like according to the selected weft 10, based on the weft selection signal from the drive control unit 42 and the set operation timing.

  The opening device 17 is an electronic dobby type opening device in the illustrated example, and when the opening control unit 42 outputs an opening frame selection signal, the opening drive unit 44 opens according to the opening frame selection signal. The opening device 17 is operated so that the selection of the frame to be exercised is performed, whereby a predetermined opening movement by each frame is performed.

  The spindle drive unit 43 is mainly composed of an inverter, for example. When a speed switching signal is output from the drive control unit 42, the rotation speed (rotation speed) of the spindle motor 16a is changed according to the speed switching signal. To do. More specifically, an output frequency corresponding to the set rotation speed of the main shaft 16 (the rotation speed of the main shaft motor 16a) is set (stored) in the main shaft driving section 43 formed of an inverter. Changes the rotation speed of the spindle motor 16a and changes the rotation speed of the spindle 16 by changing the output frequency to one corresponding to the rotation speed after switching in accordance with the speed switching signal from the drive control unit 42. The signal output from the drive control unit 42 to the spindle driving unit 43 may be a weft density signal instead of the speed switching signal indicating the number of rotations and the number of rotations after the switching. The output frequency set in the unit 43 is set in correspondence with the weft density.

  The winding control unit 46 will be described in detail later, but when the weft density signal is output from the drive control unit 42, the winding device winds the fabric 8 with the weft density of the weft 10 indicated by the weft density signal. In addition, the winding motor 13a is driven at a rotational speed corresponding to the weft density.

  As will be described in detail later, the sending control unit 47 sends out the weft density signal of the weft 10 indicated by the weft density signal as a parameter when the weft density signal is output from the drive control unit 42. The motor 3a is driven, whereby the feeding device feeds the warp 2 with a predetermined tension.

  FIG. 4 mainly shows the configuration of the winding control unit 46. The winding control unit 46 includes a base speed generation unit 51, a pulse generation unit 52, and a drive unit 53.

  When the weft density signal is output from the drive control unit 42, the base speed generating unit 51, based on the weft density (set value) indicated by the weft density signal and the angle signal θ from the angle detector 16b, A base speed signal proportional to the rotation of the signal is generated and sent to the pulse generator 52. The pulse generation unit 52 generates a drive amount signal (pulse signal) as a speed command corresponding to the base speed signal, and sends the drive amount signal to the drive unit 53.

  The drive unit 53 drives the winding motor 13a at a rotation speed (winding speed) corresponding to the speed command based on the driving amount signal. More specifically, the drive unit 53 is a servo amplifier in the illustrated example, and includes a forward / reverse counter 54, a current generator 55, and a pulse generator 56. In the drive unit 53, when a drive amount signal (pulse signal) is input to the addition terminal of the forward / reverse counter 54, a current corresponding to the number of pulses input to the forward / reverse counter 54, that is, a speed command is generated. The current generator 55 generates an excitation current corresponding to the signal. Thereby, the winding motor 13a is rotationally driven at a rotational speed corresponding to the speed command. The rotation of the take-up motor 13a is detected by the pulse generator 56 and is input to the subtraction terminal of the forward / reverse counter 54 in the form of a pulse signal. Therefore, the output of the forward / reverse counter 54 is a drive amount signal obtained by subtracting the pulse number corresponding to the rotation amount of the winding motor 13a from the pulse number based on the pulse signal as the speed command.

  FIG. 5 mainly shows the configuration of the transmission control unit 47. The delivery control unit 47 includes a base speed generation unit 61, a tension control unit 62, a pulse generation unit 63, and a drive unit 64.

  When the weft density signal is output from the drive control unit 42, the base speed generator 61 outputs the spindle 16 obtained from the weft density (set value) indicated by the weft density signal and the angle signal θ from the angle detector 16b. A base speed (basic speed) is calculated from the rotation speed, and a base speed signal corresponding to the base speed is sent to the pulse generator 63.

  Further, the tension control unit 62 stores the set value (target value) of the target tension of the warp 2 input from the input setting unit 48, and the actual tension value (detected value) of the warp 2 detected from the tension sensor 62a. ) Is input, the set value of the target tension is compared with the actual detected tension value, and the speed correction amount for correcting the base speed is obtained from the difference (tension deviation). A corresponding tension control signal is sent to the pulse generator 63.

  In addition to the base speed signal from the base speed generator 61 and the tension control signal from the tension controller 62, the pulse generator 63 receives a winding diameter signal from a winding diameter sensor 63 a that detects the winding diameter of the warp beam 3. Has been. Based on these, the pulse generator 63 generates a drive amount signal (pulse signal) as a speed command, and sends this drive amount signal to the drive unit 64. The winding diameter sensor 63a is not shown in FIG. 1, but is assumed to be disposed near the warp beam 3. However, for the detection of the winding diameter of the warp beam 3, a known method of detecting indirectly by calculation based on the rotation amount signal from the pulse generator 67 is used instead of directly detecting using the winding diameter sensor 63a. Is also possible.

  The drive unit 64 inputs the drive amount signal as a speed command output from the pulse generator 63, and drives the delivery motor 3a based on the drive amount signal. More specifically, the drive unit 64 is a servo amplifier in the illustrated example, and includes a forward / reverse counter 65, a current generator 66, and a pulse generator 67. In the drive unit 64, when a drive amount signal (pulse signal) is input to the addition terminal of the forward / reverse counter 65, a current corresponding to the number of pulses input to the forward / reverse counter 65, that is, a speed command is generated. The current generator 66 generates an exciting current corresponding to the signal. Thereby, the delivery motor 3a is rotationally driven at a rotational speed corresponding to the speed command. The rotation of the delivery motor 3a is detected by the pulse generator 67 and input to the subtraction terminal of the forward / reverse counter 65 in the form of a pulse signal. Therefore, the output of the forward / reverse counter 65 becomes a drive amount signal obtained by subtracting the pulse number corresponding to the rotation amount of the delivery motor 3a from the pulse number based on the pulse signal as the speed command.

  FIG. 6 shows an example of a fabric woven by a loom equipped with the above-described weaving apparatus. As shown in the figure, in this embodiment, the woven fabric includes woven portions A, B, and C by three types of unit woven patterns a, b, and c. Specifically, one unit of a woven pattern in a woven fabric corresponding to one repeat of the woven fabric structure is formed by weaving a part woven pattern A and a unit woven pattern b that are formed by repeating the unit woven pattern a multiple times. A woven portion B and a woven portion C formed by continuously knitting the unit woven pattern c a plurality of times, and the woven portion A, the woven portion B, the woven portion A, and the woven portion C are sequentially woven. It shall be configured. Further, the set weaving lengths of the weaving portions A, B, and C are set to X meter, Y meter, and Z meter, respectively.

  Incidentally, in the example shown in the figure, when 2X + Y + Z corresponds to a predetermined unit weaving length (cutting length), the weaving machine is stopped when weaving of the weaving portion C is completed, and the weaving is cut off, and then weaving is performed again. Weaving from part A is performed. In addition, the unit weaving length or the set weaving length (X, Y, Z) of each weaving portion is set so that weaving of the weaving pattern for one woven fabric structure shown in the figure is repeated a plurality of times to reach the unit weaving length. In this case, the weaving from the weaving part A is performed continuously after the weaving of the weaving part C.

  Further, in this embodiment, in order to weave one unit of the woven pattern composed of the weaving portions A, B, and C, the driving mode of the corresponding weaving-related apparatus for each loom cycle is different from that of a conventional general loom. Each unit woven pattern constituting each woven portion A, B, C instead of the one set over the loom cycle for one woven fabric structure, that is, the one set with the woven pattern for one woven fabric structure is set. It is assumed that the weaving pattern for forming each of a, b, and c is set independently. In this embodiment, each woven pattern for each unit woven pattern a, b, c is referred to as a woven pattern woven pattern. Accordingly, in this embodiment, the woven pattern woven pattern for the unit woven pattern a, the woven pattern woven pattern for the unit woven pattern b, and the woven pattern for the unit woven pattern c are stored in the storage device 42a of the drive control unit 42. The pattern weaving pattern is set independently.

  The “weaving pattern weaving pattern” referred to here is one in which the driving mode of each weaving cycle of each weaving related apparatus for weaving each unit weaving pattern is set for one repetition. In other words, the unit weaving pattern 1 repeat (hereinafter the same). Further, in this embodiment, the woven pattern weaving patterns for forming the unit woven patterns a, b, and c are set with the names 1, 2, and 3, respectively. Therefore, the weaving portion A is formed by repeating weaving according to the pattern 1, and similarly, the weaving portion B is formed by repeating weaving according to the pattern 2, and the weaving portion C is formed by repeating weaving according to the pattern 3.

  FIG. 7 shows a setting screen for such a woven / woven pattern. In the upper part of the setting screen, a “pattern name” field is provided, and the pattern name is input and set in the corresponding input setting field 70. A “total step” field is provided on the right side of the pattern name field, and the total step is input and set in the corresponding input setting field 71. Further, a “frame number” field is provided below the “pattern name” field, and the number of frames is input and set in the corresponding input setting field 72. In addition, an input setting field 73 for inputting and setting related information is provided.

  Then, below the “frame number” column, “Step No.”, “Frame No.”, “Color”, “Density”, and “Signal No.” so as to occupy most of the setting screen. Are provided in association with each other in the horizontal direction. An input setting field corresponding to each field is provided in association with the vertical direction. Therefore, these input setting fields are in a matrix form as a whole.

  In the example shown in the figure, the lowermost input setting column 74 has a step number. 1 is entered in the “Step No.” input setting field 75 in the order of 1, 2,... In the input setting field 76a below “1”, “2”,..., And “16” of “Frame No.”, the position of the eaves frame is the upper opening position or the lower opening position in each step as an opening pattern. Whether the position is in the opening position is set as input. Usually, by setting these input setting fields 76a to different display modes (for example, ■ or □ color display), it is set whether the position of the eaves frame is the upper opening position or the lower opening position. In the illustrated example, “frame No.” is set to “1” to “16”, that is, an opening pattern of 16 frames (which may include a hook frame for opening an ear thread) is set. However, as “Frame No.” is written up to “20”, an opening pattern of up to 20 frames can be set, and according to the setting value in the upper frame number input setting field 72 The input range of the input setting field 76a is determined.

  In the “color” input setting field 77, which weft (weft yarn type) device is to be driven in the weft insertion device of the multi-color fluid jet loom is input and set. In general, “color” means each weft to be wefted in a multicolor weft loom, and is a term generally used in the technical field of looms. In the “density” input setting field 78, the weft density is input and set. Further, in the input setting column 79 of “E” to “11” of “Signal No.”, the operation command for each step of the weaving related apparatus assigned corresponding to the symbol is the different display mode or numerical value as described above. The input can be set with. However, the input setting field 79 is arbitrarily used according to the specifications of the loom, the type of woven fabric, etc., and the operation command (setting value) is not necessarily input and set.

  Using the setting screen as shown in FIG. 7 as described above, each of the woven pattern weaving patterns (patterns 1, 2, and 3) corresponding to the unit woven patterns a, b, and c is individually created. Thus, the data is set (stored) in the storage device 42a of the drive controller 42 as separate (independent) data. However, for the setting of the weaving pattern and weaving pattern, a creation operation for setting each setting value is performed using an input setting device (for example, a personal computer) different from the loom, and the setting data is stored in a memory card or the like. Alternatively, it may be read by the input setting device 48 and stored (saved) in the storage device (memory) 42a. Further, the creation work may be performed on the loom using the input setting device 48, and the setting data may be stored (saved) in the storage device 42a.

  In the example shown in the figure, although specific setting contents are omitted, the unit woven patterns a, b, and c are different in the weft density and the type of weft 10 to be inserted. Further, in this embodiment, the set rotation speed of the main shaft 16 in weaving with the pattern 1 (unit woven pattern a) and the pattern 2 (unit woven pattern b) and the setting of the main shaft 16 in weaving with the pattern 3 (unit woven pattern c). It is assumed that the rotation speeds are set to be different from each other, and both are significantly different (for example, the setting rotation speeds of patterns 1 and 2 are 1000 rpm, the setting rotation speed of pattern 3 is 400 rpm). Note that the “rotation speed” is set, for example, in one of the input setting fields 79 of “signal No.” in the example of FIG.

  Further, in this embodiment, in addition to the woven pattern weaving pattern, weaving process information is set and stored in the storage device 42a of the drive control unit 42 (for the setting method, weaving pattern weaving). Like pattern). The weaving process information includes weaving process information for one repeat of the woven fabric structure by each weaving pattern weaving pattern, and information on the weaving length for each process, and is set using, for example, a setting screen as shown in FIG. The In addition, the weaving process is the order of weaving of each weaving part for forming 1 unit of woven pattern (woven fabric structure 1 repeat). Therefore, in the process information, the weaving order of each weaving portion for forming one unit of the weave pattern in the weaving fabric is set.

  In the example of the setting screen shown in FIG. 8, the fields of “weaving process”, “number of steps”, and “set length” as weaving process information are set in association with each other. In the “weaving process” column, the order of weaving by each weaving pattern weaving pattern in one unit of weaving pattern (weaving structure 1 repeat) is input and set in order from 1 in the process order. However, in the example shown in the drawing, in the setting column of the process order, the woven pattern weaving pattern used for weaving each weaving part is not the name representing each weaving part (weaving parts A to C), but the pattern name ( Patterns 1 to 3) are set. In the example shown in the figure, the “weaving process” field is in a state where five input setting fields 80 are displayed. The number of the input setting fields 80 is, for example, the fifth input setting field 80. As the pattern is input and set, the sixth input setting field may be automatically displayed on the screen. Moreover, it is good also as what can change the number of the input setting fields 80 by another operation as needed.

  In the setting screen shown in the drawing, in the “set length” column, the weaving length of the weaving portion to be woven in each process is input and set in a manner corresponding to the woven pattern weaving pattern of that process. With respect to the “setting length” input setting field 82, the input setting field for the fifth step is not displayed in the illustrated example. This is automatically displayed when a pattern is set in the input setting field 80 of “weaving process”. However, it may be always displayed together with the input setting field 80 of “weaving process”. In the illustrated example, the weaving length is set by the length (m), but may be set by the number of picks. “Pick (1 pick)” is a general expression in the technical field of looms, refers to one weft insertion, and corresponds to the one loom cycle (one weaving cycle). Further, in the setting screen shown in the figure, the number of loom cycles for one repeat of the weaving pattern weaving pattern set in the “weaving process” column (hereinafter, “repeat number”) is displayed as information in the “step number” column. 81.

  The drive control device 40 includes a weaving length monitor 42c and a computing unit 43a in addition to the storage device 42a that stores the weaving pattern weaving patterns and the weaving process information that constitute a plurality of different weaving conditions. . In this embodiment, it is assumed that the weaving length monitor 42 c is provided in the drive controller 42 and the calculator 43 a is provided in the spindle drive unit 43.

  FIG. 9 shows a connection example of the weaving length monitor 42c and the calculator 43a in the drive control device 40. The drive control unit 42 includes a controller 42b and a weaving length monitor 42c in addition to the above-described storage device 42a. The controller 42b reads the weaving pattern weaving pattern of the next process from the memory 42a in accordance with the process order set in the weaving process information stored in the storage device 42a as the weaving portion is switched. However, the controller 42b, at the start of weaving (at the start of operation of the loom), 1 in the process order set in the weaving process information according to the start signal generated by operating the operation button of the loom. It is assumed that the woven pattern weaving pattern set in the second step is read from the storage device 42a. It is assumed that the switching of the weaving portion by the controller 42b is performed based on a signal from the weaving length monitor 42c that monitors the weaving length.

  Specifically, the weaving length (set weaving length) of the current process set in the weaving process information stored in the storage device 42a is output to the weaving length monitor 42c via the controller 42b. The length is remembered. Then, the weaving length monitor 42c monitors the weaving length of the weaving portion woven in the current process (woven pattern weaving pattern) based on the set weaving length. That is, the weaving length monitor 42c sequentially obtains and monitors the weaving length of the weaving portion (current process) being weaved from the start of the weaving, and when the weaving length reaches the set weaving length, the switching signal Is output to the controller 42b. By receiving the switching signal, the controller 42b grasps that the weaving length of the weaving part where weaving has been performed has reached the set weaving length, and follows that process order set in the weaving process information. In the order, the weaving pattern weaving pattern set as the next process is read from the storage device 42a.

  Incidentally, the weaving length monitor 42c is a well-known one. For example, based on a signal from the angle detector 16b that detects the rotation angle of the loom main shaft 16, the weaving length monitor 42c is rotated every rotation of the loom main shaft 16 (rotation angle 0 ° (360). °) a pick counter that counts up the signal (pick signal) that is output every time) is detected, and the count value and the weft density set in the weaving pattern weaving pattern or the weaving weaving pattern that has been obtained in advance The weaving length is calculated from the weaving / shrinking rate, and it is updated sequentially. The weaving length monitor 42c resets the weaving length (the count value of the pick counter) when the monitored weaving length reaches the set weaving length (when the switching signal is generated), and the weaving in the next step A new count starts with the start of weaving of the part. The pick signal is output from the main control unit 41 in the illustrated example.

  Further, the controller 42b receives the weaving length of the weaving portion that has been woven along with the switching of the weaving portion from the weaving length monitor 42c, and sequentially accumulates this to obtain the total weaving length. Then, when weaving for one repeat of the woven fabric structure is completed, that is, when the set weaving process is completed once, it is determined whether or not the total weaving length has reached a predetermined unit weaving length (cut-off length). When the total weaving length has not reached the unit weaving length, a pattern signal indicating the weaving pattern weaving pattern set in the first weaving process is output so that the weaving process is repeated again. When all the weaving lengths have reached the unit weaving length, a stop signal is output to stop the loom.

  The drive control unit 42 stores the weaving pattern weaving pattern read from the storage device 42a in a built-in memory (not shown), and in accordance with the weaving pattern weaving pattern, the control unit and the driving unit of each weaving related device. A signal such as a parameter necessary for control is output at each step (each loom cycle). Specifically, in the case of the example of FIG. 3, the drive control unit 42 selects a speed switching signal, an opening frame selection signal (signal as an opening pattern), a weft selection based on the weaving pattern weaving pattern read from the storage device 42a. A signal (a signal as a weft configuration) and a weft density signal are generated, a speed switching signal is sent to the spindle drive unit 43, an opening frame selection signal is sent to the opening drive unit 44 of the opening device 17, and a weft selection signal is sent to the weft insertion control unit. 45, and a weft density signal is further sent to the sending control unit 47 and the winding control unit 46.

  Further, in this embodiment, when the weaving portion is switched, that is, when the weaving pattern weaving pattern is switched, there is a difference in the set rotational speed set in the weaving pattern weaving pattern before and after the switching, and the spindle 16 When the rotational speed is changed in the deceleration direction, the blank driving operation is automatically executed prior to the start of weaving (operation with weft insertion) by the weaving pattern weaving pattern in the next step. The “change in the weaving pattern weaving pattern” in this example corresponds to the “change in the weaving condition” in the present invention. The term “automatically” as used herein means “based on the condition that the rotational speed of the spindle is changed in the deceleration direction”.

  Therefore, in this embodiment, the controller 42b of the drive control unit 42 has a determination function for determining whether or not to perform the idle driving operation. It is assumed that the operation unit 43a for obtaining the period is provided in the spindle drive unit 43.

  Further, the allowable deceleration amount per loom cycle is input and stored in the calculator 43a. However, the “allowable deceleration amount” here is set as the number of rotations to be decelerated per one rotation of the main shaft (one loom cycle), and the regenerative voltage generated along with the deceleration is the main shaft drive unit ( It is arbitrarily set in consideration of a limit deceleration amount that does not cause an electrical trouble of the inverter 43 (deterioration / stop of frequency output function due to overvoltage trip). For example, when the electric trouble as described above occurs when the deceleration amount per revolution of the main shaft exceeds 250 rpm (limit deceleration amount: 250 rpm), the allowable deceleration amount is set to 200 rpm or the like.

  The determination function by the controller 42b includes the set rotational speed set in the next process woven pattern weaving pattern newly read from the storage unit 42a and the previous weaving (previous) Compared with the set rotational speed set in the weaving pattern weaving pattern in the process), if both rotational speeds are different and the set rotational speed of the next process is smaller, ”And outputs a calculation command signal and a signal indicating the difference in the set rotational speed between the previous process and the next process to the calculator 43 a of the spindle drive unit 43.

  The computing unit 43a, in response to the input of the computation command signal, the difference in the set rotational speed between the previous process and the next process, the stored allowable deceleration amount, and the number of repeats of the woven pattern weaving pattern of the next process (unit woven pattern 1 Based on the number of repeat loom cycles), a deceleration period for decelerating the main shaft 16 of the loom to the set rotation speed of the next process and a deceleration amount for each loom cycle in the deceleration period are obtained. The computing unit 43a outputs a signal indicating the calculated deceleration period to the main control unit 41. Note that in the loom cycle during this deceleration period, the loom is in an idle driving state without weft insertion. Therefore, the obtained deceleration period becomes the period of the idling operation process.

  Regarding the calculation method of the deceleration period and the deceleration amount, for example, when the set rotational speed difference is 600 rpm and the set allowable deceleration amount is 200 rpm, the next process is simply performed in 3 loom cycles (3 rotations of the main shaft). The rotational speed of the spindle is reduced (decelerated) to the set rotational speed. However, in this embodiment, the computing unit 43a sets the deceleration period to 4 to be an integral multiple of the woven pattern weaving pattern in the next process based on the number of repeats of the woven pattern weaving pattern in the next process, for example. The loom cycle. The computing unit 43a obtains a deceleration amount per rotation of the main shaft (150 rpm in this case) so that the deceleration of 600 rpm is performed in the four loom cycles.

  The reason for setting the deceleration period (period of the blank driving operation process) as an integer multiple of the number of repeats of the woven pattern weaving pattern in the next process is as follows.

  In this embodiment, the driving pattern of the weaving-related device for the idle driving process is not set, but automatically when the weaving pattern weaving pattern is switched during the continuous operation of the loom (end of the previous process). An empty driving operation is performed. Therefore, during the idling operation process, the opening device 17 and the like are driven according to the driving mode set in the woven pattern weaving pattern in the next process from the time of switching. In that case, if the period of the idle driving process is not an integral multiple of the number of repeats of the woven pattern weaving pattern, weaving (operation with weft insertion) is resumed from the middle of the woven pattern weaving pattern. As a result, the woven pattern starts halfway on the woven fabric, the continuity of the woven pattern is impaired, and the woven fabric is different from the originally planned one. Therefore, the occurrence of such a problem is prevented by determining the period of the idle driving process based on the number of repeats of the woven pattern weaving pattern in the next process.

  The spindle drive unit 43 controls the output frequency of the inverter in accordance with the deceleration amount obtained as described above, and thereby controls the deceleration of the spindle motor 16a. Is done. The main control unit 41 stops outputting the weft selection signal to the weft insertion control unit 45 during the deceleration period based on the signal indicating the deceleration period from the computing unit 43a, and as a result, no weft insertion is performed. It becomes the idle driving state. Further, during this deceleration period, the control of the winding device (winding motor 13a) and the sending device (sending motor 3a) by the winding control unit 46 and the sending control unit 47 is also stopped. The weaving length monitor 42c in the drive control unit 42 starts counting after weaving (operation with weft insertion) is started.

  And in the loom of this embodiment, when one unit of the woven pattern weaves a woven fabric as shown in FIG. 6, the weaving process information stored in the storage device 42a in the drive control unit 42 has the contents shown in FIG. Become. In the case of the illustrated example, the number of repeats of each woven pattern weaving pattern (pattern 1, 2, 3) forming the unit woven patterns a, b, c of each woven portion A, B, C is 4, 5, 2 respectively. It has become.

  Further, as described above, the set rotation speed of the main shaft 16 set in the patterns 1 and 2 is different from the set rotation speed of the main shaft 16 set in the pattern 3, and the set rotation speed in the patterns 1 and 2 is set. Is set to 1000 rpm, and the set rotational speed in pattern 3 is set to 400 rpm. Therefore, when switching from the weaving portion A according to the pattern 1 to the weaving portion C according to the pattern 3, it is assumed that control for reducing the rotational speed of the spindle 16 is performed.

  When the operation button of the loom (not shown) is operated, the controller 42b of the drive control unit 42 in the drive control device 40 performs the first process (process 1) based on the weaving process information stored in the storage device 42a. Recognizing that the set woven pattern weaving pattern is pattern 1 (woven pattern weaving pattern for unit woven pattern a), the woven pattern weaving pattern stored as pattern 1 is read from the memory 42a, and the woven pattern The pattern weaving pattern is stored in the internal memory.

  Then, the controller 42b outputs a signal such as a parameter necessary for control to the control unit and the driving unit of each weaving related device based on the pattern 1 weaving pattern. As a result, the driving of each weaving related apparatus is started, and weaving of the weaving portion A composed of the unit woven pattern a is performed.

  With the start of the weaving, the weaving length monitor 42c in the drive control unit 42 starts monitoring the weaving length. Then, when the weaving length of the weaving portion A woven with the weaving pattern weaving pattern 1 reaches X meters set for the pattern 1 in the weaving process information, a switching signal is output to the controller 42b.

  When the controller 42b receives the switching signal in the same manner as in step 1, the woven pattern weaving pattern set for the second step (step 2) based on the weaving step information is the pattern 2 (for unit woven pattern b). The woven pattern weaving pattern (pattern 1) stored in the internal memory is read out from the memory 42a, and the woven pattern weaving pattern (pattern 1) stored in the internal memory is read. Is rewritten to the woven pattern weaving pattern of pattern 2 read out in (1).

  Then, the controller 42b outputs a signal such as a parameter necessary for control to the control unit and the driving unit of each weaving related apparatus based on the newly read pattern 2 weaving pattern. As a result, each weaving-related apparatus is changed to one whose driving mode is set in the pattern 2, whereby the weaving of the weaving portion B configured by the unit woven pattern b is performed.

  Thereafter, when the weaving length of each weaving part reaches the set weaving length, that is, every time the weaving part is switched, the control for changing the weaving pattern weaving pattern as described above is performed, and the process goes through one cycle. As a result, a woven pattern for one repeat of the woven structure is woven.

  Further, in the above-described weaving process, the controller 42b of the drive control unit 42 determines whether or not to perform the idling operation process at the time of switching. And the weaving method by this invention is performed based on the determination result.

  As described above, at the time of switching from the weaving part A to the weaving part B in step 1⇒step 2, and at the time of switching from the weaving part B to the weaving part A in step 2⇒step 3, each weaving pattern weaving pattern Since the set rotation speed that has been set is the same 1000 rpm, the rotation speed of the main shaft 16 is not changed, and therefore, the idle driving process is not performed.

  On the other hand, at the time of switching from the weaving part A to the weaving part C in the process 3⇒the process 4, the set rotation speed of the pattern 1 is 1000 rpm, whereas the set rotation speed of the pattern 3 is 400 rpm, and the rotation speed of the spindle 16 Is changed to the deceleration direction, so that the idle driving process is automatically performed before weaving by the pattern 3 is started.

  That is, as described above, the controller 42b determines whether or not to perform the idle driving process, and the calculator 43a of the spindle drive unit 43 performs the deceleration period (period of the idle driving process) and the deceleration period. The amount of deceleration in each loom cycle is determined, and the loom idle driving process is performed accordingly. Thus, in the weaving method according to the present invention, the deceleration control of the spindle motor 16a (deceleration of the rotational speed of the spindle 16) is performed in the deceleration period by two or more loom cycles. In this embodiment, The woven pattern weaving pattern (the weaving pattern weaving pattern (weaving pattern) is composed of two or more loom cycles) in the next step (step 4) is obtained. Therefore, according to the weaving method of the present invention, when the rotational speed of the main shaft is reduced when the weaving conditions are switched during continuous operation (when the two weaving parts weaved under different weaving conditions are switched), Electrical troubles associated with the deceleration control of the spindle motor 16a are avoided. Moreover, in the weaving method according to the present invention, during this deceleration period, the blanking operation without weft insertion is executed, so that the quality of the woven fabric is prevented from being deteriorated.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and for example, the following modifications are possible.

  In the above-described embodiment, the period of the blanking process (deceleration period) is obtained by calculation, and the blanking operation process is automatically executed. However, the present invention is not limited to this, and the blanking process is performed. A weaving pattern for the idle driving process composed of the number of loom cycles (number of steps) is set in advance, and when the weaving conditions are switched with the reduction in the rotational speed of the spindle 16 during continuous operation of the loom, According to the weaving pattern for the driving operation process, the deceleration is performed in the deceleration period by two or more loom cycles, and the blanking operation without weft insertion is executed in each loom cycle during the deceleration period. Also good.

  For example, in the case of the above-described embodiment, separately from the woven pattern weaving pattern, a weaving pattern dedicated to the blanking operation process is created and set in the storage device 42a, and the weaving process information is set in the deceleration direction with the set rotational speed. A process in which a weaving pattern for a blanking operation process is set as a process for executing a blanking operation between two processes in which a weaving pattern weaving pattern to be changed to is set. A striking operation may be executed. That is, in the case of the above-described embodiment, a step for the idle driving operation is inserted between the step 3 and the step 4, so that the idle driving operation step is executed as the step 4 for the idle driving operation step. A weaving pattern is set, and pattern 3 (woven pattern weaving pattern for unit woven pattern c) is set in step 5. In this case, since the blanking operation is executed according to the weaving pattern for the blanking operation, the calculation of the deceleration period (period of the blanking operation process) and the deceleration amount in the above embodiment is omitted.

  Moreover, in the said Example, several woven pattern weaving patterns corresponding to each weaving part (unit woven pattern) were set separately (independently), and the woven fabric structure 1 repeat was carried out by combining these several woven pattern weaving patterns. However, the present invention is not limited to this, and a weaving pattern for one woven fabric structure including patterns corresponding to a plurality of weaving portions is set, and weaving is performed accordingly. (Driving of each weaving related apparatus) may be performed. In this case, the weaving pattern may include a pattern for the blanking operation process, but the weaving pattern may not include a pattern dedicated to the blanking operation process. That is, only the weaving pattern for one repeat of the fabric structure in which the pattern for the idle driving process is omitted is set, and when the pattern is switched with the reduction in the rotational speed of the main shaft 16 during weaving by the weaving pattern, that is, When the weaving conditions are switched with the reduction in the rotational speed of the main shaft 16, the progress of the steps in the weaving pattern is interrupted, and, as in the above-described embodiment, the idle driving process is performed over the period of the idle driving process determined by the calculation. After the driving operation, weaving according to the weaving pattern may be performed again. In addition, a weaving pattern for the blanking operation process is set separately from the weaving pattern, and the blanking operation process is performed according to the weaving pattern for the blanking operation process when the step of the weaving pattern is interrupted. Anyway.

  Moreover, in the said Example, when the rotation speed of the main axis | shaft 16 is changed in the deceleration direction with switching of a weaving part, the period of a blank driving operation process is calculated so that a blank driving operation process may be performed automatically. However, when the rotational speed of the spindle 16 is changed in the deceleration direction and the difference in the set rotational speed is small, the deceleration and idle driving process is performed in the set period. Anyway.

  Specifically, the controller 42b of the drive control unit 42 is provided with a function to determine not only whether the set rotational speed is different but also whether the rotational speed difference exceeds the allowable deceleration amount. If it is, the period of the blanking operation process is obtained by calculation as in the above embodiment, and if it does not exceed, the number of loom cycles for one repeat of the weaving pattern weaving pattern in the next process is set as the period of the blanking operation process. In addition, the deceleration and idling operation steps may be performed in the set period.

  In the above-described embodiment, the locomotive is decelerated at the same deceleration amount in each loom cycle in the obtained deceleration period. However, if the deceleration amount in each loom cycle is equal to or less than the allowable deceleration amount, how is allocated. May be. For example, when the set rotational speed difference is 700 rpm, the allowable deceleration amount is 200 rpm, and the obtained deceleration period is four loom cycles, the first three loom cycles are decelerated by 200 rpm, and the last one loom The amount of deceleration of the cycle may be 100 rpm.

  The present invention is not limited to a loom for weaving ordinary woven fabrics. For example, a loom for weaving tire cords (woven fabrics) including a weave portion and a tabby portion having significantly different weft densities (tire cord looms). It can also be applied to a pile loom including a pile weaving portion and a border weaving portion.

1 weaving machine 2 warp 3 warp beam 3a feed motor 4 back roll 5 筬 6 筬 7 opening 8 fabric 9 weave 10 guide yarn 12 guide roll 12 press roll 13 clothes winding roll 13a winding motor 14 press roll 15 cloth winding roll 16 spindle 16a spindle motor 16b angle detector 17 opening device 21 yarn feeder stand 22 yarn feeder 23 length measuring storage device 24 yarn winding arm 25 drum 26 locking pin 27 drive motor 28 actuator 29 main nozzle 31 pressure air source 32 pressure regulating valve 33 electromagnetic opening and closing Valve 34 Sub-nozzle 35 Electromagnetic on-off valve 36 Pressure regulating valve 37 Feeding cutter 38 Feeler head 39 Feeler head 40 Drive control device 41 Main control unit 42 Drive control unit 42a Storage device 42b Controller 42c Weaving length monitor 43 Main shaft drive unit 43a Unit 44 opening drive unit 45 weft insertion control unit 46 take-up control unit 47 delivery control unit 8 input setter 51 base speed generator 52 pulse generator 53 driver 54 forward / reverse counter 55 current generator 56 pulse generator 61 base speed generator 62 tension controller 62a tension sensor 63 pulse generator 63a winding diameter sensor 64 driver 65 forward / reverse counter 66 current generator 67 pulse generator 70 input setting field (pattern name)
71 input setting field (total step)
72 input setting field (number of frames)
73 Input setting field (free field)
74 input setting field (equivalent to step No. 1)
75 Input setting field (Step No.)
76a input setting field (frame No. 1-16)
76b input setting field (frame No. 17 to 20)
77 Input setting field (color)
78 input setting field (density)
79 Input setting field (Signal No.)
80 input setting field (weaving process)
81 information field (number of steps)
82 input setting field (set length)

Claims (4)

A loom for weaving a woven fabric including two or more weaving parts woven under different weaving conditions, wherein the number of revolutions of the main shaft is set in each weaving condition, and the main shaft A weaving method in a loom for changing the rotational speed,
During the continuous operation of the loom, when the speed of the spindle is reduced to the set speed corresponding to the changed weaving condition in accordance with the change of the weaving condition, the speed reduction is performed in the deceleration period by two or more loom cycles. A weaving method for a loom, characterized in that, in each loom cycle during the deceleration period, a blanking operation without weft insertion is executed.   The deceleration period is determined on the basis of a change amount of the set rotational speed, a number of loom cycles of one repeat of the fabric structure under the changed weaving conditions, and a preset allowable deceleration amount per one loom cycle. The weaving method in the loom according to claim 1. A loom that performs weaving by operating a corresponding weaving-related apparatus according to a weaving condition including a set speed that is a set value of the rotational speed of a spindle, and a storage device in which a plurality of different weaving conditions are preset and stored And a drive control device including a spindle drive unit for driving the spindle and a weft insertion control unit for controlling the weft insertion, and the rotation of the spindle during continuous operation in accordance with the change in the weaving conditions in which the set rotational speed is changed In a weaving apparatus in a loom that performs weaving by changing the number,
In the drive control device, the spindle drive unit changes the rotation speed of the spindle over a deceleration period of two or more loom cycles as the set rotation speed is changed in the deceleration direction as the weaving condition is changed. A weaving apparatus for a loom, wherein the weaving control unit decelerates to a set rotational speed under a subsequent weaving condition, and the weft insertion control unit stops weft insertion in each loom cycle during the deceleration period. The allowable deceleration amount per loom cycle is stored in advance in the storage device,
The drive control device determines the deceleration period based on the amount of change in the set rotational speed, the number of loom cycles of one woven fabric structure in the weaving conditions after the change, and the allowable deceleration amount. Weaving equipment for looms.

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