JP4573513B2 - Loom stop stage prevention method - Google Patents

Description

The present invention relates to a method for appropriately preventing a stop stage accompanying a stop of a loom according to a cycle during one repeat of an opening pattern, a cause of a stop of the loom, and the like.

The technology of Patent Document 1 sets the movement amount before weaving in response to the cycle and stop time of the loom main spindle at the time of stop during one repeat of the opening pattern when the loom is restarted to prevent the stop stage. is doing.

According to the technique of Patent Document 1, since the movement amount before weaving when the loom is restarted is not set in consideration of the cause of the stop, the effect of preventing the stop stage cannot be sufficiently obtained.

Further, the technique of Patent Document 2 prevents the occurrence of a thick step by disabling the stop stage prevention device when the loom is restarted after the cause of the stop of the loom due to the weft stop.

According to the technique of Patent Document 2, since the operation / non-operation of the stop stage prevention device is not set in consideration of the cycle of the loom spindle during one repeat of the opening pattern and the stop time, the effect of preventing the stop stage is still It ’s not enough.
JP 2001-172847 A Japanese Examined Patent Publication No. 2-58382

Therefore, an object of the present invention is to appropriately prevent the stop stage according to the cycle number during one repeat of the opening pattern, the loom stop time, and the cause of the loom stop.

Based of the above problems, the present invention is provided with a plurality of types of stop-shoulder preventing device (44), one repeat of the opening pattern in the loom (1) consisting of 3 or more cycles of the loom main shaft (23) The operation amount of each of the plurality of types of stop stage prevention devices (44) is determined according to at least one of the cycle number and the loom stop time during one repeat of the opening pattern and the loom stop cause. preset based on a combination, and controls the on these settings thus stopping stage prevention device (44) (claim 1).

Further, according to the present invention, the states of operation / non-operation of a plurality of types of stop stage preventing devices are previously determined in correspondence with the combination of the cycle number, the loom stop time, and the loom stop cause in one repeat of the opening pattern. (Claim 2).

Further, the present invention is provided with a weaving front moving device for moving the weaving before starting the loom and a blank driving device for performing operation without weft insertion at the time of starting as a stop stage preventing device, The device is activated / deactivated and the amount of operation at the time of operation corresponding to the combination is set in advance (Claim 3).

In a woven fabric in which one repeat is woven with an opening pattern of three or more cycles of the loom main shaft, the warp opening is closed or opened depending on the cycle (cycle number) when the loom stops, and the cycle number when the loom stops Depending on the warp tension when the loom stops. For this reason, the degree of movement before weaving when the loom stops is different depending on each cycle during one repeat. Therefore, setting the conditions (operation / non-operational state and operation amount during operation) of the stop stage prevention device corresponding to each cycle is an important matter for effectively using the stop stage prevention device.

The loom stop time affects the warp elongation. For each stop stage prevention device, a section of the length of the stop time is determined, and the operation / non-operation and the operation amount at the time of operation are set for each section.

As a cause of the loom stop, there are a weft stop due to a defective weft insertion, a warp stop due to warp breakage, a manual stop due to convenience such as replacement of a cloth winding roll and operation time. These causes of the stop directly affect the prevention of the stop stage. Normally, the operation amount and the non-operation of the stop stage prevention device and the operation amount at the time of operation are set to be the same for the stop and the manual stop.

As a plurality of kinds of stop stage preventing devices, there are an idling operation device, a torque increasing operation device, a so-called super-starting device, a pre-weaving movement device at the time of braking, and a so-called weaving movement device at the time of activation, so-called kickback device. Two or more of these devices are combined in accordance with the combination of the cycle number in one repeat of the opening pattern, the loom stop time, and the loom stop cause, thereby forming a plurality of types of stop stage prevention devices. .

The idle driving device is operated for a predetermined period from the restart of the loom, that is, for a predetermined number of cycles (number of picks) of the loom spindle, or for a predetermined time. Drive without putting in. After the weaving machine is restarted, the deflection of the kite gradually increases, and the punching force before weaving increases. Since the weft is beaten with substantially the same beating force as in steady operation, it is effective for preventing the stop stage.

The torque increasing operation device is also called a so-called super-starting device.When the loom is restarted, the loom main shaft drive motor torque is increased from that during steady operation, and the striking force immediately after start-up is increased during steady operation. Move closer. In this technique, there are two types (1) and (2), in which (1) sets the torque to a constant value (for example, 300% during steady operation), that is, over a predetermined period from restart. , A predetermined number of cycles (number of picks) set for the loom spindle, or over a predetermined time, (2) is to set the torque to a predetermined value (for example, 300% during steady operation, 400% or 500%), and is performed for a certain period from the restart, that is, for a certain number of cycles (for example, two cycles) or for a certain time.

The pre-weaving movement device at the time of braking operates before and after the start of motor braking after the stop signal is generated, and at the time of operation, the feeding motor or the winding motor is rotated forward to move the front of the weaving. As a result, correction in anticipation of pre-weaving movement (movement to the sending side) due to warp tension in the stopped state is made, and strikes before weaving during automatic reverse rotation following braking stop are reduced.

The movement device before weaving is a so-called kickback device. When the loom starts up, the feeding motor or winding motor rotates forward or reverse to move the weaving front by a set amount, and the thick or thin step is moved. Prevent it from occurring. For this operation, an operation cycle number, an operation cause , a stop time interval, and an operation amount are set.

In the present invention, when the loom stops, a plurality of types of stop stage prevention devices corresponding to combinations of at least one of the cycle number and the loom stop time during one repeat of the opening pattern and the cause of the loom stop. Since the stop stage prevention device is controlled based on these settings in advance, the operating and non-operating states of the machine and the amount of operation at the time of operation are set, which is optimal for the opening pattern (weaving structure) when the loom stops. The stop stage prevention function can be set, and the occurrence of stop stages can be suppressed more reliably. In addition, since the stop stage can be eliminated in advance, each setting of the loom can be set with emphasis on improving the weaving ability, thereby improving the weaving ability and reducing the loom stoppage and improving the operating rate of the loom. Can do. That is, for example, when the warp opening amount is large or when the warp tension is high, the stop stage becomes remarkable, so conventionally, it has been necessary to set the warp opening amount small or the warp tension low. In the present invention, even if the warp opening amount is set large or the warp tension is set high, the occurrence of the stop stage can be suppressed, so the weft insertion performance of the loom can be set by setting the warp opening amount large or setting the warp tension high. Can be improved, and weaving can be improved.

Further, according to the present invention, in response to the combination of the cycle number in one repeat of the opening pattern, the loom stop time, and the loom stop cause, a plurality of types of stop stage preventive devices are activated and deactivated and at the time of operation. Therefore, the stop stage can be effectively prevented corresponding to all of the cycle number, the loom stop time, and the loom stop cause (claim 2).

As stop stage prevention devices, we provide a weaving front moving device that moves the weaving before starting the loom and an idle driving device that operates without weft insertion at the time of starting, and both devices operate according to the above combination -Since the non-operation state and the operation amount at the time of operation are set in advance, it is possible to effectively cope with the cause of the stop stage (claim 3) .

FIG. 1 shows a main part of the loom 1. In the loom 1 of FIG. 1, the warp yarn 2 is wound around a delivery beam 3, sent out by the rotation of the delivery motor 4, is in contact with the tension roll 5, passes through the dropper 6, and the reed frames 7 arranged in a plurality of rows. The opening 8 is formed by the vertical movement of the frame 7. Inside the opening 8, the weft 10 inserted by the weft inserting means, for example, the weft inserting nozzle 9 intersects with the warp 2 and is beaten on the front weave 11 by the reed 12 to become a woven fabric 13. The warp 2 is set to an appropriate tension by the tension applying means 20 at the position of the tension roll 5.

The woven fabric 13 is wound around the fabric winding roll 19 through the breast beam 14, the guide roll 15, the clothing roll 17 and the guide roll 18. The clothes winding roll 17 and the cloth winding roll 19 are driven in the winding direction by the winding motor 16 directly or via a motion conversion device 22 such as a speed reducer.

Moreover, beating motion of the shedding motion and reed 12 of a plurality of heald frames 7 are both synchronized with the rotation of the loom main shaft 23, the loom main shaft 23 is driven by a drive motor 24. The rotary motion of the loom main shaft 23 is converted into a beating motion by the motion converting device 25 and is also converted into an opening motion of the plurality of rows of the scissor frames 7 by the motion converting device 26, the dobby 28 and the motion converting device 27. The rotation angle of the loom main shaft 23 is detected by the rotation angle detector 29 and is output to the main control device 30 and the opening control device 42 shown in FIG. 2 as a rotation angle signal.

FIG. 2 shows signals and commands input to the main control device 30 and a portion of the loom 1 controlled by the main control device 30. The main control device 30 receives a rotation angle signal from the rotation angle detector 29, a command to stop the specified cycle from the stop cycle specifying device 31, an operation cause from the setting device 32, an operation cycle number, an operation amount during operation, and a stop. Time interval, number of operating cycles, idle driving start angle signal, manual stop command from stop button 34, stop signal from dropper 6, weft stop signal from weft insertion feeler 36, to timing device 37 The stop time signal from the timing device based on the timing start / end command is input, and the drive control device 38 for the drive motor 24, the delivery control device 21 for the delivery motor 4, and the winding are performed under a predetermined control program. The winding control device 39 for controlling the take-up motor 16 and the weft insertion control device 40 for controlling the electromagnetic valve 41 for controlling the injection of the weft insertion nozzle 9 are controlled.

As described above, the rotation angle signal from the rotation angle detector 29 is input to the main control device 30 and is also input to the opening control device 42. The opening control device 42 receives the rotation angle signal from the rotation angle detector 29 as an input, controls the dobby 28 based on the opening pattern set in advance by the pattern setting unit 43, and controls the plurality of rows of eaves frames 7. Control the opening movement. The opening pattern is set for each cycle during one repetition of the direction and amount of opening movement of the plurality of rows of frame frames 7 based on the weave structure. Note that the one-repeat weave structure will be described later with reference to FIG.

The stop cycle designating device 31 is used during a stop stage prevention condition setting test, and refers to the cycle number set in the setter 33 when a stop command is issued from the stop button 35 for a stop stage test. Thus, a command for stopping the designated cycle is issued to the main controller 30 at the cycle number.

FIG. 3 shows a conceptual configuration of a plurality of types of stop stage prevention devices 44. The loom stop method for a loom of the present invention is premised on the presence of a plurality of types of stop stage prevention devices 44. The plurality of types of stop stage preventing devices 44 are constituted by an idle driving device 45, a torque increasing operation device 46, a weaving front moving device 47 at the time of braking, or a weaving front moving device 48 at the time of activation, and at least two of them. have.

The idle driving device 45 performs a hammering operation without weft insertion over the number of cycles (number of picks) of the loom main spindle 23 set after the loom 1 is restarted. The measuring device 32, the time measuring device 37, and the weft insertion control device 40 are configured. The setter 32 sets the stop time interval, that is, sets the stop time interval, and corresponds to the combination of the cycle number, the stop cause, and the stop time, and activates / deactivates the idle driving device 45 for each stop time interval. Set the operation, or set the operation / non-operation of the idle driving device 45 according to the combination of the cycle number and the stop cause, or set the stop time section, and the combination of the stop cause and the stop time Corresponding to, the operation / non-operation of the idle driving device 45 is set for each section of the stop time, and the number of operation cycles (the number of picks to be performed) and the idle driving start rotation angle are set as the operation amount in the operation. To do. In the process of restarting the loom 1, the idle driving device 45 operates without a weft insertion for a predetermined period (a period of the number of idle picks). During this time, the driving motor 24 is accelerated, the deflection of the reed 12 gradually increases, the striking force to the front of the weaving 11 increases, and when the operation of the loom 1 approaches the steady operation, the idle driving device 45 Becomes inoperative. Therefore, after this, the weft insertion control device 40 works, and weft insertion and beating are performed. According to the idle driving operation in this starting process, the weft 10 is beaten with substantially the same striking force as in the steady operation after weft insertion, which is effective in preventing the stop stage.

The torque increasing operation device 46 is referred to as a so-called super-starting device, and when the loom 1 is restarted, the torque of the driving motor 24 is increased from that during the steady operation, and the striking force immediately after the startup is brought closer to that during the steady operation. There are two types of this: (1) The torque is set to a constant value (for example, 300% during steady operation), and is performed over a predetermined number of cycles (number of picks) of the loom main spindle 23 or time after restart. In the first cycle, when the cause of stoppage is a stoppage and manual stoppage is performed over four cycles regardless of the stop time. In other cases, only one cycle is performed regardless of the stop time. (2) The torque is set to a predetermined value (for example, one of 300%, 400%, or 500% during steady operation), and is performed over a certain number of cycles (for example, 2 cycles) after restart. The torque increasing operation device 46 includes a main control device 30, a setting device 32, a drive control device 38 , and a time measuring device 37 . The torque increasing operation device 46 of the present embodiment adopts the former type , and the timing device 37 is not used. The setting device 32 operates the torque increasing operation device 46 based on the cycle number and the cause of the stop. The number of cycles (the number of picks taken) is set as the operation amount , and the number of operation cycles is set regardless of the length of the stop time .

The pre-weaving movement device 47 at the time of braking operates before and after the start of braking of the driving motor 24 after generation of a stop signal to the main control device 30, and drives the feed motor 4 or the take-up motor 16 in the forward rotation direction. The weaving 11 is moved. As a result, correction in anticipation of pre-weaving movement (moving to the feeding side) due to warp tension in the stopped state is made, and beating to the front of the weaving 11 during automatic reverse rotation following braking stop is reduced. The pre-weaving movement device 47 at the time of braking includes a delivery control device 21, a main control device 30, an operation cause, a setting device 32 for setting an operation amount, and a winding control device 39. The setter 32 sets the operation amount / non-operation of the pre-weaving movement device 47 during braking and the operation amount during operation corresponding to the combination of the cycle number and the cause of the stop.

The weaving front movement device 48 at the time of activation is called a so-called kickback device, and the feeding motor 4 or the winding motor 16 is rotated forward or backward to move the weaving front 11 by a set amount to generate a thick or thin step. In order to prevent this, the transmission control device 21, the main control device 30, the setting device 32, the time measuring device 37, and the winding control device 39 are configured. The setter 32 sets the stop time section independently of the section of the idle driving device 45, and the operation of the pre-weaving movement device 48 at the start corresponds to the combination of the cycle number, the stop cause, and the stop time.・ Set the amount of operation at the time of starting and the amount of operation at the time of starting, or set the amount of operation at the time of starting the operation / non-operation of the pre-weaving movement device 48 according to the combination of cycle number and stop cause Or, the stop time section is set independently of the section of the idle driving device 45, and the operation / non-operation and the operation of the pre-weaving movement device 48 at the start-up are performed corresponding to the combination of the cycle number and the stop time. Set the working amount of the hour.

The loom stop stage preventing method of the loom according to the present invention is based on the loom 1 that forms an opening pattern of one repeat in three or more cycles of the loom main spindle 23, and the cycle number in one repeat of the opening pattern and the loom stop. Corresponding to the combination of at least one of the times and the cause of stoppage of the loom, a plurality of types of stop stage prevention devices 44 (an idle driving device 45, a torque increasing operation device 46, a weaving pre-movement device 47 during motor braking, activation) The state of operation / non-operation of the pre-weaving movement device 48) and the operation amount at the time of operation of each device are set in advance, and the loom accompanying the stop of the loom 1 when the loom 1 is operated based on these settings. In order to prevent the stop stage of the cloth 13, a plurality of types of stop stage preventing devices 44 are controlled.

As described above, in the woven fabric in which one repeat is three cycles or more, the opening 8 by the warp 2 is in a closed state or an open state depending on the cycle when the loom 1 is stopped. The degree of movement varies depending on each cycle in one repeat. Therefore, the conditions for preventing the stop stage are set corresponding to each cycle, and the condition setting for each cycle is an extremely important element for effectively operating the stop stage preventing function.

FIG. 4 shows a woven structure diagram of an opening pattern of one repeat (one repetition of the woven structure) in six cycles as a specific example. During the operation of the loom 1, a stop command is issued to the main controller 30 to cause a stop or manual stop, and after the loom 1 (the loom main shaft 23) is braked, the stop signal or the stop command generation cycle is next. After the stop, the loom main shaft 23 is automatically reversed, and after the stop, the loom main shaft 23 is stopped (standby) at a predetermined main shaft rotation angle, for example, 320 ° in the generation cycle of the stop signal or the stop command. In the weaving structure of FIG. 4, when the loom 1 is stopped, the opening 8 of the warp 2 is in an open state when stopped (standby) in the first cycle, the second cycle, the fourth cycle, and the fifth cycle. When stopped (standby) in the third cycle and the sixth cycle, the closed state is entered.

In addition, according to the air jet loom 1 manufactured by the patent applicant (Tsukoma Kogyo Co., Ltd.), the operation status after the stop signal is generated is as follows. If the cause of the stop occurs during the operation of the air jet loom, for example, if it is a weft stop, a weft stop signal is detected as a stop signal at a rotation angle of 290 ° of the loom main shaft 23. The driving motor 24 starts to be braked at 70 ° of the cycle following the generation cycle of the stop signal, and stops within the cycle. Following the braking stop of the driving motor 24, the loom main shaft 23 is automatically reversed by the driving motor 24 and stops at 320 ° of the generation cycle of the stop signal. In the case of weft stop, the rotation is further manually reversed to 180 ° of the generation cycle of the weft stop signal, the defective weft is extracted, and then 320 ° of the cycle before the weft stop signal generation cycle (if there is an empty strike) , 300 °, or 160 °) and restart from there. In the case of warp stop, after the warp yarn 2 is repaired at 320 ° of the generation cycle of the warp stop signal, it is restarted with its rotation angle, but when there is an idle shot, it is reversed to 300 ° or 160 °. .

In the case of Example 1 (Table 1) to be described later, the stop time of the loom 1 is determined as a section of a predetermined time length for each device in the idle driving device 45 and the pre-weaving movement device 48 at the start, The operation amount at the time of operation / non-operation and operation is set for each section. The idle driving device 45 is set as a section of 0 to 2 minutes and a section of more than 2 minutes. In addition, for the pre-weaving movement device 48 at the time of activation, an operation amount of 0 to 4 minutes (an operation amount of a stop time of 4 minutes is determined, and the operation amount is calculated and set in proportion to the measured stop time. ) Is set as a section exceeding 4 minutes (the operation amount is set to an operation amount of 4 minutes for the stop time).

There are three causes of stoppage: weft stop, time stop, and manual stop. The weft stop is output at the rotation angle 290 ° of the loom main shaft 23 when the weft insertion feeler 36 detects a weft insertion failure. Warp stop occurs when the dropper 6 detects warp breakage or warp slack. Further, the manual stop is performed by operating the stop buttons 34 and 35 for stopping the weaving or testing by the operator. In Example 1 (Table 1), Example 2 (Table 2), and Example 3 (Table 3) to be described later, the stoppage and manual stop are the operation / non-operation and operation of the stop stage prevention device 44. The operating amount at the time is set the same.

The plurality of kinds of stop stage preventing devices 44 are constituted by two or more of an idle driving device 45, a torque increasing operation device 46, a weaving front moving device 47 at the time of motor braking, and a weaving front moving device 48 at the time of activation. However, the operation / non-operation state is set corresponding to a combination of at least one of the cycle number and the stop time of the loom 1 during one repeat of the opening pattern and the stop cause of the loom 1. Accordingly, there are three combinations of (1) a combination of cycle number, stop time and cause of stop, (2) a combination of cycle number and stop cause, and (3) a combination of stop time and stop cause. It becomes. This combination is set in consideration of the stop state of the loom 1.

The stop cycle designating device 31 is used during a stop stage prevention condition setting test. During the condition setting test for preventing the stop stage, the operator sets the stop cycle during one repeat by the setting device 33 by designating the cycle number, and then operates the stop button 35 during the operation of the loom 1 to check the stop stage test. Therefore, the loom 1 is manually stopped. The driving motor 24 is not immediately braked but is braked after reaching a set cycle (cycle number), and stops (waits) at a predetermined main shaft rotation angle of, for example, 320 ° in a specified stop cycle by automatic reverse rotation following braking stop. In this way, in the condition setting test of the stop stage preventing device 44, the loom main spindle 23 can be stopped at a desired cycle during one repeat, whereby the condition setting test can be easily performed. The following examples are set under optimum conditions obtained by a condition setting test.

Table 1 shows a plurality of types of stop stage prevention devices 44 corresponding to the cycle number of one repeat in FIG. 4 and the cause of the stop of the loom 1, the idle driving device 45, the torque increasing operation device 46, and the movement before weaving during braking. An example of setting the operation / non-operation state of the device 47 and the pre-weaving movement device 48 at the time of activation and the operation amount at the time of operation is shown. This example is a combination of the cycle number of the loom main spindle 23, the cause of the loom 1 stop, and the loom stop time. In addition, about the condition setting of the stop stage prevention apparatus 44, the operation amount for 1 pick, etc., it described in the margin.

For the idle driving device 45, for each cycle number, cause of stop, and stop time (0 to 2 minutes and more than 2 minutes), the number of operation cycles and start as the operation amount at the time of operation / non-operation and operation The main shaft angle is set by the setting device 32.

The torque increasing operation device 46 operates with all the cycle numbers, and the number of operating cycles (the amount of operation at the time of operation) is set by the setting device 32 corresponding to the cycle number and the cause of the stop.

The pre-weaving movement device 47 at the time of braking is related to the delivery control device 21 and is activated / not activated according to the cycle number and the cause of stop / manual stop / wet stop. The setting unit 32 sets the non-operating state for all the cycle numbers with respect to the winding control device 39 as an example.

The pre-weaving movement device 48 at the time of activation relates to the delivery control device 21 and is activated / deactivated according to the cycle number and the cause of stop / manual stop / wet stop, and the standard stop as the operation amount at the time of operation. Assuming a time of 4 minutes, ± 1 pick, -0.7 pick, etc. are set by the setting device 32, and the operation amount during operation is as follows: the stop time of 0-4 minutes, and 4 minutes It is set according to the section that exceeds. In addition, with respect to the winding control device 39, a standard stop time of 4 minutes is assumed as the amount of operation at the time of operation / non-operation and operation according to the cycle number and the stop / cause of manual stop and weft stop ± 0 .2 picks and the like are set by the setting device 32, and the amount of operation at the time of operation is set according to the interval of the stop time 0 to 4 minutes and the interval exceeding 4 minutes, as with the delivery control device 21.

Table 2 shows the operation of the idle driving device 45 and the weaving front moving device 48 at the time of start-up as a plurality of types of stop stage preventing devices 44 corresponding to the combination of the cycle number of one repeat in FIG.・ The setting example of the operation state at the time of operation is shown.

For the idle driving device 45, the setting number 32 is the number of operation cycles and the start spindle angle as the operation number and the operation amount according to the cycle number, the stop / manual stop and the weft stop as the cause of the stop. Is set by In this example, the loom stop time is not taken into consideration.

Table 3 shows the operation / non-operation of the idle driving device 45 and the pre-weaving movement device 48 at the start-up as a plurality of types of stop stage prevention devices 44 corresponding to the combination of the stop time and the cause of the stop of the loom 1 in FIG. An example of setting the operation state and the operation amount during operation is shown.

For the idle driving device 45, regardless of the cycle number, the operation cycle as the operation amount at the time of operation, non-operation, and operation every stop cause, stop time (0 to 2 minutes and more than 2 minutes) The number and the starting spindle angle are set by the setting device 32.

The pre-weaving movement device 48 at the time of start-up is standard as the amount of operation at the time of operation, non-operation, and operation according to the stop / cause of manual stop and weft stop regardless of the cycle number, regarding the sending control device 21. Assuming a typical stop time of 4 minutes, -1 pick is set by the setting device 32, and the amount of operation during operation is the same as in the first embodiment, as described above, the interval of the stop time of 0 to 4 minutes, and 4 minutes. It is set according to the section exceeding. Further, regarding the winding control device 39, the non-operation is set by the setting device 32 irrespective of the cycle number and regardless of the cause of the stop.

The present invention can be used not only for the illustrated loom but also for a pile loom. In addition, as described above, the combination of the cycle number, the loom stop time and the loom stop cause in one repeat of the opening pattern, and the contents (functions) of a plurality of types of stop stage prevention devices are determined by the loom. It is set according to the function and fabric structure.

It is a side view of the mechanical principal part of a loom. It is a block diagram of the control system of a loom. It is a weave organization chart in 1 repeat of an opening pattern. It is an ideal explanatory drawing of a stop stage prevention device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Weaving machine 2 Warp 3 Sending beam 4 Sending motor 5 Tension roll 6 Dropper 7 Hail frame 8 Opening 9 Weft insertion nozzle 10 Weft 11 Pre-weaving 12 Knot 13 Weaving cloth 14 Breast beam 15 Guide roll 16 Winding motor 17 Dressing roll 18 Guide roll DESCRIPTION OF SYMBOLS 19 Cloth roll 20 Tension | tensile_strength imparting means 21 Feed control device 22 Motion conversion device 23 Loom main shaft 24 Motor motor 25 Motion conversion device 26 Motion conversion device 27 Motion conversion device 28 Dobby 29 Rotation angle detector 30 Main control device 31 Stop cycle designation device 32 Setting device 33 Setting device 34 Stop button 35 Stop button 36 Weft insertion feeler 37 Timing device 38 Drive control device 39 Winding control device 40 Weft insertion control device 41 Solenoid valve 42 Opening control device 43 Pattern setting device 44 Stop stage prevention device 45 Empty Driving device 46 Torque increasing operation device 47 Before weaving during braking Dynamic device 48 start-up of the cloth fell moving device

Claims (3)

In the loom (1) provided with a plurality of types of stop stage prevention devices (44), and one repeat of the opening pattern is composed of three or more cycles of the loom main shaft (23),
A combination of at least one of the cycle number and loom stop time during one repeat of the opening pattern and the cause of loom stoppage is set for each of the activation / deactivation and the operation amount of each of the plurality of stop stage prevention devices (44). preset stop step method for preventing weaving machine and controlling these thus stopping stage prevention device set (44) based on.   Corresponding to the combination of the cycle number in one repeat of the opening pattern, the loom stop time, and the loom stop cause, the operation / non-operation states of the plural kinds of stop stage prevention devices (44) and the operation amount at the time of operation The loom stop stage preventing method for a loom according to claim 1, wherein: is set in advance.   As the stop stage prevention device (44), the weaving front moving device (48) that moves the weaving front (11) when the loom (1) is started, and the idle driving operation that performs the operation without the weft insertion at the time of starting. A device (45) is provided, and both devices (48, 45) are set in advance according to the combination, in an activated / inactivated state and an operation amount at the time of operation. The loom stop stage prevention method described.

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