JP2020117823A - Start restriction method and device for pile loom - Google Patents

Abstract

To provide a start restriction method and device for preventing occurrence of pile omission in a pile fabric caused by an erroneous operation of an operator, and for facilitating the setting for prohibiting the restart at a loom cycle of a specific pile pick.SOLUTION: In a start restriction method in a pile loom, when a plurality of fast picks are included in a pile pattern, the number of starting reverse revolutions set such that 1 is assigned to the second and subsequent fast picks, is stored in advance. When a weft insertion failure occurs, a numerical value corresponding to a pile pick of a loom cycle where the weft insertion failure occurs is read from the starting reverse revolutions, and is stored as a current value. The stored current value is incremented by +1 whenever a rotation angle of a main shaft passes through 0° by a normal rotation of the main shaft accompanying the subsequent operation of the loom, and is updated so as to be incremented by -1 whenever the rotation angle of the main shaft passes through 0° by a reverse rotation of the main shaft, and the startup of the loom by an operation button operation is prohibited until the updated current value becomes 0.SELECTED DRAWING: Figure 6

Description

According to the present invention, one pile forming cycle consisting of a plurality of loom cycles is constituted by a pile pattern consisting of a loose pick and a fast pick, and at each pile step in the one pile forming cycle, beating is performed according to the pile pattern. The present invention relates to a pile loom that changes a relative position between a position and a cloth fell position to form a pile, and a method and an apparatus for limiting activation in a pile loom in which a defective yarn is removed by an operator when a weft insertion failure occurs.

The above-mentioned "pile pick" is a general term for so-called loose picks and fast picks performed for forming piles in a pile loom.

Regarding the “pile pattern” mentioned above, one pile is formed through two or more loose picks and one or more fast picks performed thereafter, and the “pile pattern” means the loose pile. It is a combination of the number of picks and fast picks. For example, when one pile is formed by two loose picks (L) and one fast pick (F), the pile pattern is a combination of 2L and 1F and is represented as “2L-1F”. To be done.

Further, the "one pile forming cycle" mentioned above is a loom cycle in which one repetition of a pile pattern including a plurality of pile picks is executed (completed) as described above. Since each pile pick is performed in one loom cycle, the number of one pile forming cycle (the number of cycles) corresponds to the number of loom cycles corresponding to the total number of pile picks in the pile pattern. Therefore, for example, when the pile pattern is 2L-1F, one pile forming cycle is three loom cycles.

The "pile step" referred to above is a stage in the loom cycle unit in the one pile forming cycle, and the stage (what number) is represented by a step number.

If a weft insertion failure occurs during weaving on the loom, the weaving machine is stopped, and then the weft thread that has failed weft insertion (hereinafter referred to as "defective weft thread") is woven from the front of the cloth. The recovery work is performed by removing the defective weft yarn, such as removing and restarting the loom. The same applies to the pile loom, but in the case of the pile loom, when only the defective weft is removed and the loom is restarted, a defect (hereinafter, referred to as "pile omission") may occur in the woven pile fabric. .. Specifically, when weft insertion failure occurs during weft insertion in the loom cycles of the second and subsequent loose picks and the first fast pick, if only the defective weft yarns are removed and the loom is restarted, the formed or next Since the holding force of the weft thread against the pile formed on the lower side is reduced, the pile warp is pulled out to the delivery side with the subsequent weaving, and the pile comes out. Therefore, in the above case, it is necessary to remove not only the defective weft yarn but also all the weft yarns wefted in the loose pick loom cycle before that in the one pile forming cycle in the returning operation.

It should be noted that there is no problem when the loom is configured so that the wefts are automatically removed as described above, but in the case of the loom in which the returning operation such as the removal of the defective wefts is performed by the operator, There is a case where the operator forgets to remove only the defective weft and restart the loom. Then, in that case, the woven fabric has a pile dropout as described above. Therefore, as a technique for preventing the restart of the loom without removing the weft to be removed in this way, there is a technique disclosed in Patent Document 1 (hereinafter referred to as "conventional technique").

In order to prevent the pile from falling out as described above, the prior art is designed to restart the loom cycle of the second loose pick or the first fast pick following the loose pick when restarting after the loom is stopped due to weft insertion failure. It is forbidden to start the loom from the loom cycle.

JP-A-7-126961

However, the above-mentioned conventional technique can only deal with the case where the pile pattern as disclosed in the prior art document is "2L-1F" or "2L-2F", that is, when the loose pick is two loom cycles. , Other pile patterns cannot be supported.

More specifically, the types of pile fabrics that are supposed to be woven by a specific pile loom are not limited to the two types as described above, and three or more types are generally used. Further, it is sufficiently conceivable that the pile fabrics of three or more types include a fabric woven in a pile pattern set so that the loose pick has three or more loom cycles. Then, for example, assume that the loose pick is a pile pattern of three loom cycles and a weft insertion failure occurs during weft insertion of the first fast pick. In that case, when the operator tries to restart the loom by removing only the defective weft, the loom at the time of the restart is in the third loose pick loom cycle.

However, in the above-mentioned related art, regarding the loose pick, it is assumed that only the restart of the second loose pick in the loom cycle is prohibited, so that the loom is restarted in the above case. Therefore, in that case, the pile loss as described above occurs.

Further, as described above, in a pile loom in which weaving of three or more types of pile fabrics is assumed, the pile pattern set in the pile loom has a number corresponding to the expected pile weaving. In that case, if it is attempted to prohibit the restart as described above based on the above-mentioned conventional technique, there is a problem that a great deal of labor and time are required for the preparation.

Specifically, in the above-mentioned conventional technique, each of the pile steps (loose pick of step number 2 and fast pick of step number 3) for prohibiting restart of the loom in the pile pattern is set in advance in the program of the loom control computer. , The restart of the pile step in the loom cycle is prohibited. That is, the above-mentioned conventional technique requires that all pile steps that prohibit restart are set for each pile pattern. Therefore, as described above, when weaving of three or more types of pile fabrics is assumed, the pile loom is set with a number of pile patterns corresponding to the types of pile fabrics that are supposed to be weaved. It is necessary to preset each of the pile steps that prohibit restart for all the pile patterns that are set. Moreover, in the above-mentioned conventional technique, the setting is performed on the program of the loom control computer, that is, the program is modified. Therefore, in such a case, if it is attempted to prohibit the restart of the pile loom based on the above-mentioned conventional technique, a great deal of labor and time are required for the setting (preparation) thereof.

The present invention was created in consideration of the above circumstances, and in the pile loom described in the above technical field, when loose pile is used for weaving a pile fabric using a pile pattern of three or more loom cycles. Even if there is, there is provided a start-up limiting method and device that prevent the occurrence of pile omission due to an operator's work mistake and facilitate the setting for prohibiting restart of a specific pile pick in the loom cycle. The purpose is to

The present invention is premised on a pile loom in which a defective yarn is removed by an operator when weft insertion failure occurs. The pile loom comprises a pile pattern in which one pile forming cycle including a plurality of loom cycles includes a pile pick which is a loose pick and a fast pick, and at each pile step in the one pile forming cycle, the pile pattern is reed according to the pile pattern. The relative position between the striking position and the cloth fell position is changed to form a pile.

In addition, the start limiting method in the pile loom of the present invention is set such that the loose pick in the pile pick and the first fast pick which is the first fast pick are assigned the same numerical values as the pile step. When the pile pattern includes a plurality of fast picks, the number of start reversals is set in advance so that 1 is assigned to the second and subsequent fast picks. When a weft insertion failure occurs during weaving, a numerical value corresponding to the pile pick of the loom cycle in which the weft insertion failure has occurred is read from the starting reverse rotation number and stored as a current value, and the stored current value is With the operation of the loom, the rotation angle of the main shaft is incremented by 1 every 0° with the forward rotation of the main shaft, and is incremented by 1 every 0° with the reverse rotation. The starting of the loom by operating the operation button is prohibited until the updated current value becomes 0.

Further, in the start limiting method for the pile loom of the present invention, a startable section defined as a range of the rotation angle of the main spindle in the loom cycle of the fast pick is preset, and the rotation angle of the main spindle other than the startable section is set. Then, the activation of the loom by operating the operation button may be prohibited.

Further, the activation limiting device in the pile loom of the present invention is characterized by including the following first storage device, second storage device, arithmetic unit, and startup controller. The first memory is a starting reversal number set so that the same number as the pile step is assigned to the loose pick and the first fast pick which is the first fast pick in the pile pick, When the pile pattern includes a plurality of fast picks, the number of reverse rotations for starting is set in advance so that 1 is assigned to the second and subsequent fast picks. The second storage unit is a numerical value read from the starting reverse rotation number stored in the first storage unit when a weft insertion defect detection signal is generated, and is the number of the loom cycle in which the weft insertion defect has occurred. The numerical value corresponding to the pile pick is stored as the current value. The computing unit increments the current value stored in the second storage unit by 1 every time the rotation angle of the spindle passes 0° with the forward rotation of the spindle accompanying the operation of the loom, and with the reverse rotation. It is updated so as to be -1 every time the rotation angle of the main shaft passes 0°. The start-up controller monitors the updated current value and prohibits the start of the loom by operating the operation button until the current value becomes 0.

In the start limiting device for a pile loom of the present invention, the first storage unit stores a startable section defined as a range of a rotation angle of a spindle in the fast pick loom cycle, and the start controller. However, the starting of the loom by operating the operation button may be prohibited at a rotation angle of the main shaft other than the startable section.

INDUSTRIAL APPLICABILITY The present invention, even in a pile loom in which a loose pick is pile-woven using a pile pattern of three or more loom cycles, in all loose-pick loom cycles at the time of restarting after the loom is stopped due to a weft insertion failure. It realizes prohibiting the starting of the loom. Specifically, in a pile pattern in which the number of loose picks and fast picks is not limited, a setting is made to assign a numerical value (starting reverse rotation number) to each pile step, and the starting reverse rotation number and the spindle normal Number of reverse rotation operations (specifically, the number of forward and reverse rotation operations of the main spindle from the time when the weft insertion failure is detected to the time when the loom is reversed to a loom cycle in which the defective weft is removed and the loom can be started) Due to this, it is intended to prohibit the starting of the loom.

Further, in the present invention, the setting (setting of the number of reverse rotations for starting) is set to the loose pick and the first fast pick with the same numerical value as the pile step, and the pile pattern includes a plurality of fast picks. In this case, 1 is assigned to the second and subsequent fast picks. Therefore, according to the present invention, it is not necessary to individually set each pile step that prohibits restart for each pile pattern as in the above-mentioned conventional technique, and therefore, for the setting (preparation) work. Labor and time can be reduced. Therefore, according to the present invention, even in a pile loom in which a loose pick is pile-weaved using a pile pattern of three or more loom cycles, the setting (preparation) thereof does not require a great deal of labor or the like as described above. Prohibition of activation can be realized.

Further, in the present invention, the startable section is defined in advance as the range of the rotation angle of the main shaft (hereinafter, referred to as “crank angle”), and the restart is prohibited at a crank angle other than the startable section. It is possible to prevent a situation in which weft insertion is not normally performed immediately after the start-up.

Specifically, in a normal loom, weft insertion may not be normally performed immediately after starting depending on the crank angle at which the loom is started. In other words, the loom needs to be started in a state in which the crank angle is within a rotation angle within which the weft insertion can be normally performed (hereinafter referred to as "weft insertion possible angle"). Therefore, in the above-described present invention, the restart can be performed by the forward and reverse operations of the loom (spindle) for restarting after the defective weft is detected (hereinafter, referred to as "restart preparation operation"). The loom is moved to a state in which the loom cycle is a normal loom cycle (the loom cycle in which the current value is 0), and the crank angle at the time of restart of the loom is the crank angle in the loom cycle in which the restart is possible. It is necessary to make the weft insertion possible angle.

However, in the reversing operation of the spindle toward the crank angle to be finally restarted in the restart preparation operation, due to a work error of the operator, the crank angle is within the loom cycle in which the current value becomes 0. The reverse operation may be stopped in a state other than the above-mentioned possible weft insertion angle. Then, if the loom is restarted in that state, a situation may occur in which the above weft insertion is not normally performed.

On the other hand, the rotation range in which the weft insertion is normally performed is stored in the first storage device as a startable section in advance, and the start is prohibited from the rotation angle of the spindle other than the startable section. By configuring the start-up controller, it is possible to prevent the occurrence of a situation in which weft insertion is not normally performed immediately after restarting due to the above-mentioned work mistake.

It is an explanatory view showing an example of a pile loom to which the present invention is applied. It is explanatory drawing which shows an example of the pattern setting screen for input-setting the weaving pattern set by this invention. It is a block diagram showing an example of a starting restriction device in a pile loom of the present invention. It is a list showing an example of setting of the number of start reversals corresponding to a plurality of pile patterns. It is explanatory drawing which shows the effect|action of a pile loom when removing a weft and operating a loom by a correct procedure. It is explanatory drawing which shows the effect|action of a pile loom when operation of a drive button is performed in the wrong procedure. It is a block diagram which shows the modified embodiment of a starting restriction|limiting device.

FIG. 1 shows an example of a pile loom to which the present invention is applied. The pile loom of this embodiment forms a pile by changing the relative position between the cloth fell position and the beating position by moving the cloth fell position in the front-rear direction according to the pile pattern by the terry motion mechanism. It shall be a cloth-moving pile loom.

As shown in FIG. 1, a pile loom 1 includes a pile warp beam 3 for winding a pile of warp yarns 2 for feeding a pile warp (pile warp beam) 3 and a plurality of ground warps 4 wound in a sheet form. Two warp beams 3, 5 of a warp beam (ground warp beam) 5 for supplying the ground warp are provided.

The pile warp yarn 2 is sent out from the pile warp yarn beam 3, and is guided to the cloth fell 12 via the guide roll 6, the pile tension roll 7, the heddle frame 8 (held heddle 9) and the reed 11. On the other hand, the ground warp yarn 4 is sent out from the ground warp yarn beam 5, wound around the tension roll 13 for the ground warp yarn, and then guided to the cloth fell 12 through the heddle 9 and the reed 11.

Then, the warp threads 2 and 4 sent out from the warp thread beams 3 and 5 form an opening 14 by the vertical movement of the heddle frame 8, and a weft thread (not shown) inserted into the opening 14 is woven by the reed 11 Woven fabric 15 is formed by beating on 12. Further, the woven cloth 15 is wound around the cross guide 16 and guided, and then is wound around a winding beam 19 via a winding roll (surface roll) 17 and a guide roll 18.

In such a pile loom, pile weaving in which piles are formed and plain weaving in which borders are formed are repeatedly performed. The pile loom 1 of the present embodiment is a so-called cloth-moving pile loom in which pile weaving is performed by moving the cloth fell position with respect to the most advanced position of the reed 11 as described above.

In such a pile loom, the operation of moving the cloth fell as described above is also called terry motion. The terry motion is obtained by displacing the tension warp 13 for the ground warp around which the ground warp 4 is wound and the cross guide 16 around which the woven cloth 15 is wound in the front-back direction as described above. Done. Incidentally, although the structure itself for displacing the tension roll 13 and the cross guide 16 is well known, the description thereof will be omitted, but in the illustrated example, the drive motor 21 is used as a drive source for the operation. Then, the drive motor 21 is driven according to a pile pattern stored in advance in the main controller 30 of the pile loom 1.

The pile pattern is set in the input setting device 40 and stored in the main control device 30. FIG. 2 shows a pattern setting screen 41 on which a weaving pattern including a pile pattern is set in the input setting device 40. The right column 42 of the pattern setting screen 41 is a pile pattern setting display column 42. The weaving pattern includes the tension of the pile warp and the ground warp, the number of revolutions of the loom, the type of weft (color), the weft density, the opening pattern, and the pile pattern. Then, in the pattern setting screen 41, the opening pattern, color, weft density, and pile pattern are set for each loom cycle.

In the pattern setting screen 41, the numeral 43a in the leftmost column 43 is the step number of the weaving pattern. (1 step=1 loom cycle) is shown. A column 44 on the right side of which cells C are arranged in a grid pattern is a setting display column 44 of the opening pattern. A number indicating the number of the heddle frame is displayed on the upper portion 44a of the setting display field 44 for the opening pattern. Further, the central column 45 of the pattern setting screen 41 is a color and weft density setting display column 45.

Then, in the illustrated pattern setting screen 41, the pile pattern is set in the format of "5 3L-2F" or "4 3L-1F" in the "P" column of the pile pattern setting display column 42. However, regarding the display (for example, “53L-2F”), as described above, “L” indicates a loose pick and “F” indicates a fast pick. Therefore, "3L-2F" represents a pile pattern composed of three loose picks and two fast picks. Further, the number on the left side (“5” in “5 3L-2F”) represents the total number of pile picks forming the pile pattern, that is, the number of loom cycles for one pile forming cycle.

In order to complete the pile pattern during weaving, a loom cycle for one pile forming cycle is required. Therefore, in the "P" column of the pile pattern setting display column 42, the same pile pattern is set for the cells corresponding to the number of loom cycles. Specifically, since 5 loom cycles are required to complete the pile pattern of 3L-2F, "5 3L-2F" is set for the cells for 5 loom cycles.

Further, the numbers displayed in the “S” column on the right side of the “P” column in the pile pattern setting display column 42 are the step numbers of the pile steps in the pile pattern set in the “P” column. Is shown. Incidentally, in the 3L-2F pile pattern, the pile steps with step numbers 1 to 3 correspond to loose picks, and the pile steps with step numbers 4 to 5 correspond to fast picks.

Then, the terry motion is performed according to the pile pattern thus set on the pattern setting screen 41. Specifically, in the 3L-2F pile pattern, in the first loose pick in the pile pattern (the pile step with the step number "1"), the cloth fell position is separated from the most advanced position of the reed (the front direction). ) Move to. Further, in the first fast pick in the pile pattern (pile step with step number "4"), the cloth fell position moves to the most advanced position of the reed (return).

By the way, the present invention is premised on a pile loom (hereinafter, simply referred to as a “loom”) in which a defective weft yarn is removed by an operator when a weft insertion failure occurs. When a weft insertion failure occurs in such a loom, the following operation is performed in the loom.

First, as a premise, the main controller 30 is connected with a weft feeler 22 which is a sensor for detecting the arrival of the weft. Further, the main controller 30 has a function of determining whether or not weft insertion is normally performed (whether a weft insertion failure has occurred) based on the weft arrival signal S2 input from the weft feeler 22. ing. Further, when main controller 30 determines that weft insertion failure has occurred, main controller 30 outputs stop signal S1 to drive controller 50. Then, the drive control device 50 stops the rotation of the spindle motor 23 and operates a brake (not shown) in response to the input of the stop signal S1 to control the stop of the loom.

As a result, the loom undergoes inertial rotation of the main shaft 24 about one rotation from the time when the stop control is started, and, for example, the loom is temporarily moved near the crank angle of 280° in the loom cycle next to the loom cycle in which weft insertion failure has occurred. It will be in a stopped state. Incidentally, the crank angle at which the vehicle is temporarily stopped is referred to as the "crank angle at the primary stop position". Then, after that, the reverse rotation operation is automatically started, and the loom is stopped after the completion of the reverse rotation operation and is in a standby state waiting for a worker. In addition, the crank angle in the standby state is referred to as "the crank angle at the secondary stop position". The reversing operation of the loom is performed so that the main shaft 24 reverses about one rotation. Therefore, the loom is in the standby state near the crank angle of 300° in the loom cycle in which weft insertion failure has occurred, and the crank angle passes 0° in the reverse process.

When the worker arrives at the loom, the operator operates the reverse rotation button 25 to reverse the loom to a crank angle of around 180°. As a result, the warp is opened and the defective weft is brought out. Then, in this state, the worker performs a removing operation for removing the defective weft from the inside of the warp opening 14.

When the weft yarn located closest to the weaving side after the removing operation is the weft yarn that has been weft-inserted in the loose pick loom cycle (hereinafter referred to as the "loose pick cycle"), when the weaving machine is restarted, It is also necessary to remove the weft. Therefore, in that case, the worker reverses the weaving machine to bring the weft yarn into the state in which the weft yarn is discharged, and performs the weft yarn removing operation.

After performing all the wefts to be removed including the defective wefts, the operator operates the reverse rotation button 25 to reverse the crank angle (starting angle) for restarting the loom. The starting angle is set to, for example, a crank angle of around 300° in the loom cycle immediately before the loom cycle in which the last weft to be removed is removed. Therefore, the crank angle passes 0° even in the process of reversing the loom for restarting.

Then, when the loom is reversed to the above activation angle, the operator stops the operation of the reverse button 25 to stop the loom and operates the operation button 26 (hereinafter, referred to as "operation button operation"). ). Thereby, the loom is restarted. Incidentally, a forward rotation button 27 is also provided on the loom. In the work of removing the weft and the work of adjusting the crank angle of the loom to the starting angle, the operator operates the forward rotation button 27 as necessary to rotate the loom forward.

In the pile loom described above, according to the present invention, the loom includes a start limiting device that limits the restart by the operation button operation after the defective weft removing operation. The activation limiting device will be described in detail below.

As shown in FIG. 3, the activation limiting device 60 is connected at its input end to the main control device 30 and at its output end to a drive control device 50 for driving and controlling the main shaft motor 23 of the loom. Further, the activation limiting device 60 includes a first storage device 61 that stores a startup reverse rotation number, which will be described later, and a current value calculator 62 that is connected to the first storage device 61 and the main control device 30 at the input end. At the input end, the first memory 61, the present value calculator 62, and the activation controller 63 connected to the main controller 30 are included as constituent elements.

The loom includes an encoder 28 as a device for detecting the crank angle. Furthermore, the activation controller 63 in the activation limiting device 60 is also connected to the encoder 28 at its input end. Then, a signal (angle signal θ) indicating the crank angle detected by the encoder 28 is input to the activation controller 63. Further, the activation controller 63 is connected to the drive controller 50 at its output end. Then, the start-up controller 63 is configured to output to the drive control device 50 an operation command signal S4 which is a signal for restarting the loom.

In the first storage device 61, set values regarding prohibition of restart of the loom, such as the number of reverse rotations of start and the startable section, are stored in advance. Among these set values, the start reverse rotation number is a set value used for determining whether or not restarting of the loom is prohibited. Then, the startup reversal number is set for all pile patterns stored in main controller 30.

Specifically, the start reverse number is set so that when the pile pick in the pile step is the loose pick or the first fast pick, the same numerical value as the step number of the pile step is assigned. Further, for a pile pattern set so as to include a plurality of fast picks, in addition to the above, the starting reversal number is set so that 1 is assigned to the second and subsequent fast picks. In addition, the number assigned to each pile pick of the pile pattern (hereinafter, referred to as “assigned value”) in the number of starting reverse rotations is a loom cycle in which weft insertion failure is detected (hereinafter, abbreviated as “detection cycle”). It means that the number of loom cycles is between the number of loom cycles) and the number of loom cycles that can be restarted.

More specifically, as described above, when the weft yarn positioned on the most cloth fell side after the weft yarn removing operation is the weft yarn that has been inserted in the loose pick cycle, it is also necessary to remove the weft yarn when restarting the loom. There is. Then, by setting the weft yarn positioned on the most front side to be the weft yarn put in the fast pick loom cycle (hereinafter, referred to as “fast pick cycle”), a problem in weaving after the loom is restarted. Can be prevented. Therefore, normally, the loom (spindle 24) is reversely rotated to the above-described starting angle in the fast pick cycle closest to the detection cycle in the reverse rotation direction, and the loom is restarted in that state. Incidentally, when the detection cycle is the loose pick cycle or the first fast pick cycle, the last fast pick cycle in the pile forming cycle immediately before the pile forming cycle including the detection cycle is the closest to the detection cycle. It is a fast pick cycle.

As described above, in the normal restart method, the loom is restarted in the closest fast pick cycle to the detection cycle, but the loom cycle in which the restart is performed is It is a loom cycle that is preceded by the number of pile steps. In other words, by reversing the main shaft 24 by one rotation unit for the number of pile steps in the detection cycle, the loom is brought into a state in which the loom cycle is restarted.

The start reverse number is used to determine whether to prohibit the restart of the loom as described above. The determination is based on whether or not a reverse rotation corresponding to the assigned value has been performed from the detection cycle. Be seen. Therefore, when the detection cycle is the loose pick cycle or the first fast pick cycle, the assigned value of the number of reverse rotations for starting is the same numerical value as the step number of the pile step of the detection cycle. In addition, when the detection cycle is the second or subsequent fast pick cycle, the loom cycle immediately before it is also the fast pick cycle, so the closest fast pick cycle to the detection cycle is the one before the detection cycle. This is the loom cycle. Therefore, in this case, the assigned value of the number of reverse rotations of the start is set to 1. Then, the startup reversal number is set for each pile pattern in such a manner that the above allocation value is assigned to each pile step in the pile pattern.

FIG. 4 shows an example of the number of reverse rotations of startup described above. It should be noted that FIG. 4 shows, in the form of a list, how the starting reverse rotation number is set for a plurality of types of pile patterns. Further, in the list shown in FIG. 4, pile patterns are shown in the leftmost column of the table, and for each pile pattern, the column arranged on the right side corresponds to the pile pick and the pile step in each pile step. The assigned value of the number of startup reversals to be performed is shown. Specifically, "F/4" in the column where the step number of the pile pattern of 3L-2F is 4 (4th) is that the pile pick of the loom cycle is the fast pick, and the allocation value of the number of reverse rotations to start is 4. It is shown that.

By the way, a general pile loom can support weaving with a plurality of types of pile patterns. Therefore, in the present embodiment as well, the number of startup reversals stored in the first storage unit corresponds to each of a plurality of types of pile patterns (for example, all the numbers shown in FIG. 4) are set to each pile pattern. It is stored in the first storage device as system data in an associated manner.

Further, the startable section of the above-mentioned set values is a section in which the restart can be performed within the loom cycle (during one rotation of the main shaft), and is a section set within the angular range of the crank angle. In other words, the startable section is a section determined to prohibit restarting at a crank angle other than the set angle range. More specifically, the startable section is set to an angular range of crank angles in which weft insertion is normally performed immediately after restarting. The angular range is determined based on weaving conditions (for example, the loom rotation speed, the jetting start timing and jetting pressure of the weft insertion nozzle, the width of the pile fabric to be woven, and the like). Further, in this embodiment, it is assumed that the angle range 241 to 340° is set as the startable section.

The present value calculator 62 includes a storage unit 64 and a calculation unit 65 as shown in FIG. The storage unit 64 corresponds to the second storage device in the present invention. Then, the storage unit 64 stores a numerical value (assignment) corresponding to the pile pick of the loom cycle in which the weft insertion failure has occurred in response to the generation of a weft insertion failure detection signal (hereinafter, simply referred to as “detection signal”) S6. The assigned value N read from the starting reverse rotation number stored in the first storage device 61 is stored as the current value P. The calculation unit 65 corresponds to the calculation unit in the present invention, and the current value P stored in the storage unit 64 is 0° when the main shaft 24 rotates in the normal and reverse directions due to the operation of the loom. Is configured to be updated each time the vehicle passes. The present value calculator 62 configured as described above will be described in more detail below.

First, as a premise, as shown in FIG. 3, the main controller 30 is connected to a calculation unit 65 in the present value calculator 62. When the main control device 30 determines that the weft insertion failure has occurred based on the weft arrival signal S2 input from the weft feeler 22, the main control device 30 performs the above-described stop control of the loom and instructs the calculation unit 65 to perform the stop control. It is configured to output the detection signal S6.

Further, main controller 30 stores the pile pattern input and set by input setting device 40 as described above. Then, the main controller 30 determines the current step No. in the weaving pattern every time the main shaft 24 makes one revolution during weaving. And the pile pattern and the pile steps are updated to control the drive motor. Update to the one according to. Therefore, the main controller 30 knows the pile pattern and the pile step at that time in each loom cycle. Further, when the main control device 30 outputs the detection signal S6 to the arithmetic unit 65 as described above, the main control device 30 also outputs the pile information signal S8 indicating the current pile pattern and the pile step to the arithmetic unit 65. It is configured.

Based on such a premise, the calculation unit 65 receives the detection signal S6 and the pile information signal S8 from the main control device 30, and then, based on the pile pattern and the pile step indicated by the pile information signal S8, The storage device 61 is configured to read out the assigned value N of the number of reverse rotations for starting. Specifically, when the pile pattern shown in the pile information signal S8 input from the main controller 30 is 3L-2F and the pile step (step number) is 4, the calculation unit 65 causes the first storage unit 4 is read out from 61 as the allocation value N of the number of reverse rotations of starting. Further, the calculation unit 65 is configured to store the read assigned value N as the current value P in the storage unit 64 of the current value calculator 62.

Further, the calculation unit 65 updates the current value P stored in the storage unit 64 as described above every time the crank angle passes 0° due to the forward/reverse rotation of the spindle 24 accompanying the operation of the loom. Is configured. More specifically, the main controller 30 is configured to output a rotation signal S10 (forward rotation signal/reverse rotation signal) indicating the rotation direction of the spindle 24 to the arithmetic unit 65 as the spindle 24 is driven. .. The rotation signal S10 is a signal output during a period other than during weaving. Therefore, the normal rotation signal is output to the calculation unit 65 even during inertial rotation accompanying the stop control as described above. By the way, in the present embodiment, “during weaving” means a period from the start of operation of the loom to the time of occurrence of a cause of stop such as weft insertion failure. The rotation signal S10 is also output to the drive control device 50, and the drive control device 50 is configured to drive and control the spindle motor 23 based on the rotation direction indicated by the rotation signal S10.

The main controller 30 is also configured to detect the crank angle based on the angle signal θ input from the encoder 28. Further, main controller 30 is configured to output a signal (0° signal) θa indicating the crank angle of 0° to calculation unit 65 every time the crank angle of 0° is detected.

Then, when the 0° signal θa is input while the normal rotation signal is being input from the main control device 30, the calculation unit 65 reads the current value P from the storage unit 64 and outputs the current value P. Is added to 1, and the numerical value after the addition is stored in the storage unit 64 as a new current value P (overwriting the current value P stored in the storage unit 64). When the 0° signal θa is input while the reverse rotation signal is being input from the main control device 30, the calculation unit 65 reads the current value P from the storage unit 64 and outputs 1 from the current value P. The subtraction is performed, and the numerical value after the subtraction is stored in the storage unit 64 as a new current value P.

Since the calculation unit 65 is configured in this way, the current value P stored in the storage unit 64 is 0° before passing every 0° when the crank angle passes 0° due to the forward rotation operation of the loom. It is updated to a value obtained by adding 1 to the value of. In addition, the current value P stored in the storage unit 64 is updated to a value obtained by subtracting -1 from the value before passing 0° each time the crank angle passes 0° due to the reverse operation of the loom. ..

The start controller 63 operates when the current value P is other than 0, and when the current value P is 0 and the crank angle is outside the angular range (241 to 340°) set as the startable section. It is configured to prohibit the starting of the loom by button operation. The activation controller 63 will be described in more detail below.

First, as a premise, the operation button 26 is connected to the main controller 30 connected to the activation controller 63 as shown in FIG. Then, main controller 30 is configured to output operation signal S12 to start controller 63 when operation button 26 is operated. The activation controller 63 is also connected to the current value calculator 62 as described above, but the calculator 65 in the current value calculator 62 is stored in the storage unit 64 in response to a request from the start controller 63. The present value P is transmitted to the activation controller 63.

Then, when the operation signal S12 is input from the main control device 30, the activation controller 63 outputs a request signal S14 for the request to the present value calculator 62 (calculator 65). Has been done. Furthermore, when the current value P is 0, the activation controller 63 reads out the set value of the startable section from the first storage device 61, and detects it based on the set value and the angle signal θ input from the encoder 28. The present crank angle is compared with the current crank angle. Then, as a result of the comparison, the start controller 63 outputs the drive command signal S4 to the drive controller 50 when the crank angle is within the angle range of the startable section (241 to 340°). Is configured to. In other words, the activation controller 63 does not perform the above-mentioned comparison when the current value P is not 0, and does not output the operation command signal S4 to the drive control device 50 as a result of not performing the comparison. Has been done.

According to this configuration, when the current value P stored in the current value calculator 62 (storage unit 64) is 0, the activation controller 63 causes the drive controller 50 to operate in response to the operation of the operation button 26. The operation command signal S4 is output and the loom is restarted as usual. On the other hand, if the current value P is not 0, the operation command signal S4 is not output from the start controller 63 even if the operation button 26 is operated, so that the loom is not restarted. Become. That is, in the latter case, the operation signal S12 is output from the main control device 30 by operating the operation button 26, but the restart of the loom (by the drive control device 50) accompanying this is restarted by the start limiting device 60. It will be limited.

In addition, in the latter case, the activation controller 63 is also configured to output a prohibition signal S16 indicating that the restart is prohibited to the main control device 30. On the other hand, the main control device 30 is configured to display a message such as a drive button operation invalidation message to the input setting device 40 when the prohibition signal S16 is input.

The operation of the pile loom including the activation limiting device 60 according to the present embodiment as described above will be described with reference to FIGS. 5 and 6 show an example of a case where weft insertion failure occurs in the first fast pick cycle, which is the pile step of step number 4, in the pile pattern of 3L-2F. Incidentally, "1st (Loose)" and "4th (Fast)" shown on the upper side of the figure indicate the pile step and pile pick of the pile pattern in the loom cycle. For example, “4th (Fast)” indicates a fast pick cycle in which the step number of the pile step is 4. Further, FIG. 5 is an explanatory diagram showing the operation of the pile loom when the weft removal operation from the stop of the loom to the restart of the loom and the operation of the reverse rotation button 25 and the operation button 26 are performed in the correct procedure. On the other hand, FIG. 6 is an explanatory diagram showing the operation of the pile loom when the operation of the operation button 26 is performed in the wrong procedure. The operation of the pile loom when the weft removing operation and the operation of the reverse rotation button 25 and the operation button 26 are performed in the correct procedure will be described below with reference to FIG. 5 in the order of (1) to (7).

(1) When weft insertion failure occurs, the main control device 30 controls the loom stop and the detection signal S6 and the pile information signal S8 to the present value calculator 62 (calculator 65) in the start limiting device 60 as described above. Is output. Along with that, the arithmetic unit 65 is the assigned value N of the number of reverse rotations to start from the first memory 61 based on the pile pattern (3L-2F) and the pile step (step number 4) indicated by the pile information signal S8. At the same time as reading "4", the "4" is stored in the storage unit 64 as the current value P. In addition, in FIG. 5, the current value P is shown in the vicinity of the crank angle when the weft insertion failure occurs (circle number 4).

(2) With the stop control, the main shaft 24 coasts to the crank angle at the primary stop position and stops, but since the rotation is in the forward rotation direction, the main controller 30 causes the coasting rotation. In the inside, a normal rotation signal is output to the present value calculator 62 (calculator 65). Since the inertial rotation is about one rotation as described above, the crank angle passes 0° during the inertial rotation. Therefore, during inertial rotation, the 0° signal is output from the main controller 30 to the calculation unit 65 only once. As a result, the arithmetic unit 65 reads out “4” of the current value P stored in the storage unit 64 and adds 1, and stores the value “5” after the addition as the new current value P. It is stored in the unit 64.

(3) Next, the loom is temporarily stopped at the crank angle of the primary stop position, and then automatically reversely rotated to the crank angle of the secondary stop position in the standby state. Since the crank angle passes through 0° during the reverse rotation as described above, during the reverse rotation up to the secondary stop position, the reverse rotation signal and one 0° signal from the main controller 30 are the current values. It is output to the calculator 62 (calculator 65). As a result, the calculation unit 65 reads out “5” of the current value P stored in the storage unit 64 and subtracts 1 and stores “4” which is the numerical value after the subtraction as a new current value P. It is stored in the unit 64. Then, after the automatic reverse rotation, the loom is in a standby state at the crank angle of the secondary stop position (crank angle near 300°).

(4) When the worker arrives at the loom in the standby state, the worker operates the reverse rotation button 25 to reverse the loom to about 180° in the loom cycle, and then removes the defective weft. I do.

(5) In the present embodiment, since weft insertion failure occurs in the first fast pick cycle, work for removing all weft yarns inserted in the three loose pick cycles before that is performed. Specifically, in the same manner as described above, the work of reversing the weaving machine to remove the wefts by repeating the weaving operation up to about 180° in the previous weaving machine cycle was repeated, and weft insertion was performed in the previous three loom cycles. The weft is removed. Then, in the process of removing the weft inserted in the three loose pick cycles, as shown in FIG. 5, since the crank angle passes 0° three times with the reverse operation of the loom, In the same manner as described above, the subtraction process is performed every time the crank angle passes 0°, and when the removal work is completed, the current value P stored in the storage unit 64 of the current value calculator 62 is It is “1”.

(6) Then, the operator operates the reverse rotation button 25 to restart the loom to reverse the loom to the starting angle (300°) in the previous loom cycle. Since the crank angle passes 0° even in the reverse rotation operation, the subtraction process is performed and the current value P stored in the storage unit 64 becomes “0”. After the completion of the reverse rotation, the operator operates the operation button 26, and the operation signal S12 is output from the main control device 30 to the activation controller 63 as described above.

(7) When the operation signal S12 is input, the activation controller 63 determines whether the current value P is 0. Since the current value P is “0” as described above, the activation controller 63 determines that the angular range (241 to 340° in the present embodiment) of the above-described startable section and the current crank angle (starting angle). : 300°). Then, since the current crank angle is within the angular range of the startable section, the start controller 63 outputs the operation command signal S4 to the drive controller 50, thereby restarting the loom.

Next, referring to FIG. 6, the operation of the pile loom when the operation button 26 is operated in the wrong procedure will be described in the order of (8) to (11) below.

(8) In some cases, the operator forgets or makes a mistake in the number of wefts to be removed, and performs an operation for restarting even though the wefts to be removed still remain. Specifically, it was assumed that the operator could restart the machine after removing the defective weft and removing the weft inserted in the 3rd or 2nd loose pick cycle. May be up to the starting angle in the previous loom cycle, and the operation button 26 may be operated at the stage when the loom is reversed to the starting angle.

(9) However, as is apparent from the above, the current value P stored in the current value calculator 62 (storage unit 64) is not 0 at that stage. Therefore, even if the operator operates the drive button 26 at that stage, the start controller 63 does not perform the comparison as described above and does not output the drive command signal S4 to the drive controller 50.

(10) In addition, even if the removal work by the operator is correctly performed, the operator makes a mistake in the reverse operation toward the crank angle at which the loom is finally restarted, and the weft immediately after the restart. There is a case where the loom is reversely rotated to a crank angle at which insertion is not normally performed, that is, a crank angle outside the angular range of the startable section, and the operation button 26 is operated in that state. However, in that case, the start controller 63 performs the above-mentioned comparison, but since the crank angle at that time is not within the angular range of the startable section, as a result of the comparison, the drive is performed in the same manner as in the above case. The operation command signal S4 is not output to the control device 50.

(11) In this way, when all the wefts to be removed have not been removed (when the current value P is not 0) or when all the wefts to be removed have been removed (when the current value P is 0) If the weaving machine is in a state in which the weaving machine is reversed to a crank angle (a crank angle outside the angular range of the startable section) in which weft insertion is not normally performed immediately after restarting, the operation button 26 is operated However, the drive command signal S4 is not output from the activation limiting device 60 to the drive control device 50. Therefore, the drive control of the spindle motor 23 by the drive control device 50 is not restarted, and the loom is not restarted. That is, in those cases, the restart limiting device 60 limits the restart of the loom associated with the operation of the operation button 26.

The present invention is not limited to the above-described embodiment (the above-mentioned embodiment), but may be modified embodiments such as the following 1) to 3).

1) In the above-described embodiment, the activation limiter 60 has a startable section set in advance as an angular range within the fast pick cycle, and is driven even if the operation button 26 is operated at a crank angle other than the startable section. The operation command signal S4 is not output to the control device 50. However, the present invention may have a configuration in which the startable section is not set.

For example, depending on the loom, as the reversing button 25 is operated in the stopped state, the loom reverses to a preset crank angle in the previous cycle of the loom, and the reverse rotation temporarily stops at that crank angle. There is one configured in. Therefore, in the loom thus configured, the crank angle at which the loom is once stopped may be set within the angular range of the startable section. In that case, as a correct operation, if the weft to be removed remains in the state in which the weaving machine is reversed until the reverse rotation stops at the crank angle after the work of removing the defective weft, the reverse button is pressed to further remove the weft. When 25 is operated and all the wefts to be removed are removed, the operation button 26 is operated to restart the loom. As a result, a situation in which the operator operates the operation button 26 at a crank angle at which weft insertion is not normally performed immediately after restarting does not occur, and thus such a loom may have a configuration in which a startable section is not set. good.

2) In the activation limiting device 60 of the above-described embodiment, the calculation unit 65 in the current value calculator 62 corresponding to the calculator in the present invention reads the current value P in addition to the function of updating the current value P as described above. At the same time, it has a function of storing the read current value P in the storage unit 64 of the current value calculator 62 corresponding to the second memory. That is, in the activation limiting device 60, the arithmetic unit has a function of reading the current value from the first memory 61 and storing the current value in the second memory 67.

However, the activation limiting device according to the present invention is not limited to the one in which the arithmetic unit is configured to have the function, and may be configured to include a dedicated part having the function in addition to the arithmetic unit. Specifically, as shown in FIG. 7, the activation limiting device 60A is provided with the current value transmitter 66 as the above-mentioned dedicated part, and the current value transmitter 66 is connected to the first storage device 61, It is configured to be connected to the second storage device 67 and the main control device 30. In the case of that configuration, the activation limiting device 60A has a configuration in which the computing unit 68 is not connected to the first storage unit 61. Further, the detection signal S6 and the pile information signal S8 from the main controller 30 are output to the present value transmitter 66 instead of the calculator 68. Then, the current value transmitter 66 receives the detection signal S6 and, based on the pile pattern and the pile step indicated by the pile information signal S8, calculates the numerical value (from the starting reversal number stored in the first memory 61). The assigned value N) in the above embodiment is read out, and the numerical value is stored in the second memory 67 as the current value P. As a result, similarly to the above-described embodiment, when the weft insertion failure occurs, the current value P corresponding to the time is stored in the second storage device 67.

3) In the above-described embodiment, in the start limiting device 60, the number of start reverse rotations is stored in the first storage device 61 as system data, and it is possible to support weaving with a plurality of types of pile patterns assumed in the pile loom. In this way, a plurality of items corresponding to each of the plurality of types of pile patterns are stored. However, in the present invention, the number of reverse rotations to start is not limited to the one stored in the first storage device in accordance with the assumed plurality of types of pile patterns, and the pile patterns actually used for weaving. May be stored in the first storage device. The following two modes (first and second modes) may be used as modes for storing (setting) only the number of reverse rotations for start-up corresponding to the pile pattern actually used for weaving in the first storage device. Is possible.

In the first aspect, the input setting device in the pile loom is configured so that the assigned value of the number of reverse rotations for starting can be input and set with respect to the pile step in the pile pattern actually used for weaving. Specifically, in the first aspect, for example, a setting screen for setting the allocation value of the number of startup reversals is provided in the input setting device, and the allocation value of the number of startup reversals is assigned to each pile step of the pile pattern on the setting screen. Enable input settings. The pile pattern set on the pattern setting screen may be automatically displayed on the setting screen.

Then, when the input setting of the assigned value is completed, the input setting device transmits the assigned value (starting reversal number) set to the input to the first storage device in association with the pile pattern. Can be configured as Then, in the case of that configuration, in the preparatory stage before a new weaving is started, as the pile pattern used for the weaving is set, the input setting of the number of startup reversals corresponding to the pile pattern is performed. It will be performed by the operator. Then, when the input setting is completed, the starting reverse rotation number corresponding to the pile pattern used for weaving at that time is stored in the first storage device. It should be noted that the assigned value for the number of reverse rotations is determined based on the (simple) setting mode in which the relationship with the pile pattern is determined as described above. Can be said to be small.

In the second aspect, when the pile pattern is set on the pattern setting screen, the input setting device is configured to automatically set the number of reverse rotations for starting according to the pile pattern. Specifically, in the second mode, for example, a program that determines the number of startup reversals (assigned value) based on the setting mode as described above with reference to the pile pattern input and set is incorporated in the input setting device. When the pile pattern is input and set on the pattern setting screen, the program automatically configures the number of reverse rotations for start-up according to the pile pattern that is input and set.
Then, the input setting device may be configured to transmit the obtained starting reversal number to the first storage device in association with the pile pattern. Then, in the case of the configuration, when the setting of the pile pattern used for the weaving is completed in the preparatory step, the number of starting reversals corresponding to the pile pattern is stored in the first storage device. Becomes

The present invention is not limited to the examples and modified embodiments described above, and can be modified as appropriate without departing from the spirit of the invention.

1 pile loom 2 pile warp (warp)
3 Warp beam (pile warp beam)
4 Ground warp (warp)
5 Warp beam (ground warp beam)
6 Guide Roll 7 Pile Tension Roll 8 Heald Frame 9 Heald 11 Reed 12 Woven Front 13 Tension Roll 14 Opening 15 Woven Fabric 16 Cross Guide 17 Winding Roll (Surface Roll)
18 Guide Roll 19 Winding Beam 21 Drive Motor 22 Weft Feeler 23 Spindle Motor 24 Spindle 25 Reverse Button 26 Run Button 27 Forward Button 28 Encoder 30 Main Controller 40 Input Setting Device 41 Pattern Setting Screen 42 Pile Pattern Setting Display Field 43 Left end column 43a Number 44 Opening pattern setting display column 44a Upper part of the opening pattern setting display column 45 Color and weft density setting display column 50 Drive controller 60, 60A Activation limiter 61 First memory 62 Current value calculator 63 Startup controller 64 Storage unit 65 Calculation unit 66 Current value transmitter 67 Second storage device 68 Calculation unit

S1 stop signal S2 weft arrival signal S4 operation command signal S6 detection signal S8 pile information signal S10 rotation signal S12 operation signal S14 request signal S16 prohibition signal C cell N assigned value P current value

Claims (4)

One pile forming cycle consisting of a plurality of loom cycles is composed of pile patterns consisting of loose picks and fast picks, and at each pile step in the one pile forming cycle, the beating position and the cloth fell are set according to the pile pattern. A pile loom that changes a relative position to a position to form a pile, and is a start limiting method in a pile loom in which defective yarn removal is performed by an operator when weft insertion failure occurs,
The loose pick and the first fast pick, which is the first fast pick in the pile pick, are the number of starting reversals set so that the same numerical value as that of the pile step is assigned, and the plurality of the fasteners are included in the pile pattern. When the topic is included, the start reversal number set so that 1 is assigned to the second and subsequent fast picks is stored in advance,
When a weft insertion failure occurs during weaving, a numerical value corresponding to the pile pick of the loom cycle in which the weft insertion failure has occurred is read from the starting reverse rotation number and stored as a current value,
The stored current value is incremented by 1 every time the rotation angle of the spindle passes 0° with the forward rotation of the spindle due to the operation of the loom thereafter, and the rotation angle of the spindle becomes 0° with the reverse rotation. Updated to -1 each time it passes,
A method for limiting activation in a pile loom, characterized in that activation of the loom by operating a drive button is prohibited until the updated current value becomes zero. In the loom cycle of the fast pick, a startable section defined as a range of the rotation angle of the spindle is set in advance,
2. The start limiting method for a pile loom according to claim 1, wherein starting of the loom is prohibited by operating a drive button at a rotation angle of the main shaft other than the startable section. One pile forming cycle consisting of a plurality of loom cycles is composed of pile patterns consisting of loose picks and fast picks, and at each pile step in the one pile forming cycle, the beating position and the cloth fell are set according to the pile pattern. A pile loom that changes a relative position to a position to form a pile, and is a start limiting device in a pile loom in which a defective yarn is removed by an operator when a weft insertion failure occurs,
The loose pick and the first fast pick, which is the first fast pick in the pile pick, are the number of starting reversals set so that the same numerical value as that of the pile step is assigned, and the plurality of the fasteners are included in the pile pattern. A first storage device in which a starting reversal number set such that 1 is assigned to the second and subsequent fast picks when a topic is included is stored in advance,
A numerical value read from the starting reverse rotation number stored in the first storage device in response to the generation of a weft insertion failure detection signal and corresponding to the pile pick of the loom cycle in which the weft insertion failure has occurred. A second storage device that stores the current value,
The present value stored in the second memory is incremented by 1 every time the rotation angle of the spindle passes 0° with the forward rotation of the spindle accompanying the operation of the loom, and the rotation angle of the spindle with reverse rotation. Is updated so as to be -1 every time 0 passes through 0°,
A start-up controller that monitors the updated current value and prohibits starting of the loom by operating the operation button until the current value becomes 0.
A start limiting device for a pile loom, comprising: The first memory stores a startable section defined as a range of a rotation angle of a main shaft in a loom cycle of the fast pick,
The start limiting device for a pile loom according to claim 3, wherein the start controller prohibits the start of the loom by operating a drive button at a rotation angle of the main shaft other than the startable section.

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