JP7159063B2 - Start limiting method and device for pile loom - Google Patents

Description

According to the present invention, one pile forming cycle consisting of a plurality of loom cycles is composed of a pile pattern consisting of loose picks and fast picks, and is beaten according to said pile pattern at each pile step during said one pile forming cycle. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a start-limiting method and apparatus for a pile loom that forms piles by changing the relative positions of the position and the cloth fell position, and in which defective yarns are removed by an operator when defective weft insertion occurs.

The above-mentioned "pile pick" is a general term for so-called loose picks and fast picks that are performed to form a pile on a pile loom.

In addition, regarding the "pile pattern" mentioned above, one pile is formed through two or more loose picks followed by one or more fast picks, and the "pile pattern" refers to the loose It consists of a combination of numbers 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 expressed as "2L-1F". be done.

Furthermore, "one pile forming cycle" mentioned above is a loom cycle in which one repetition of a pile pattern consisting of 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 (number of cycles) corresponds to the number of loom cycles for 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 step in a loom cycle unit in one pile forming cycle, and the step (number) is indicated by a step number.

When a weft insertion failure occurs in the loom during weaving, the loom is stopped, and then the weft yarn with the failure in weft insertion (hereinafter referred to as "defective weft yarn") is woven into the cloth and is removed from the cloth fell. A recovery operation is performed that involves removing the defective weft, such as removing it and restarting the loom. The same is true for pile looms, but in the case of a pile loom, if only defective wefts are removed and the loom is restarted, defects (hereinafter referred to as "pile omission") may occur in the woven pile fabric. . Specifically, when a defective weft insertion occurs in the weft insertion of the loom cycle of the second and subsequent loose picks and the first fast pick, the defective weft is removed and the loom is restarted. Since the holding force of the weft yarns on the pile formed in the first layer is lowered, the pile warp yarns are pulled out to the delivery side during subsequent weaving, resulting in pile dropout. Therefore, in such a case as described above, it is necessary to remove not only the defective weft but also all the wefts inserted in the previous loose pick loom cycle in the one pile forming cycle in the recovery operation.

If the loom is configured to automatically remove the weft as described above, there is no problem. The operator may forget to remove the defective weft and restart the loom. In that case, the woven fabric will have the above-mentioned pile omission. Therefore, as a technique for preventing restarting of the loom without removing the weft yarn to be removed, there is a technique disclosed in Patent Document 1 (hereinafter referred to as "prior art").

In order to prevent the above-described pile dropout, when the loom is restarted after the loom is stopped due to defective weft insertion, the loom cycle of the second loose pick or the first fast pick following the loose pick is performed. It prohibits starting the loom from the loom cycle.

JP-A-7-126961

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

More specifically, the types of pile fabrics that are expected to be woven by a specific pile loom are not limited to the two types described above, but generally include three or more types. It is also conceivable that the three or more types of pile fabrics include fabrics woven with a pile pattern set so that loose picks are made in three or more loom cycles. In addition, for example, it is assumed that the loose pick is a pile pattern of three loom cycles, and a defective weft insertion occurs in the first fast pick. In that case, when the operator removes only the defective weft and tries to restart the loom, the state of the loom at the time of restarting is the loom cycle of the third loose pick.

However, in the above-described prior art, it is only assumed that restarting of the loose pick in the loom cycle of the second loose pick is prohibited. Therefore, in the case as described above, the loom is restarted. Therefore, in that case, the above-mentioned pile omission will occur.

Further, in a pile loom that is expected to weave three or more types of pile fabrics as described above, the number of pile patterns set in the pile loom is the number corresponding to the expected pile weaving. In that case, if it is attempted to prohibit restarting as described above based on the conventional technology, there is a problem that the preparation requires a great deal of labor and time.

Specifically, in the prior art, each of the pile steps (loose pick of step number 2 and fast pick of step number 3) that prohibits restarting of the loom in the pile pattern is preset in the program of the loom control computer. , restarting in the loom cycle of that pile step is prohibited. That is, the prior art requires setting all pile steps that prohibit restart for each pile pattern. Therefore, when three or more types of pile fabrics are assumed to be woven as described above, the number of pile patterns corresponding to the types of pile fabrics to be woven is naturally set in the pile loom. For all the set pile patterns, it is necessary to set each of the pile steps for which restart is prohibited in advance. Moreover, in the prior art, the setting is performed for the program of the loom control computer, that is, the program is modified. Therefore, in such a case, if an attempt is made to prohibit restarting of the pile loom based on the conventional technique, it will take a great deal of labor and time to set (preparate).

The present invention has been created in consideration of the above-mentioned circumstances, and the pile fabric is woven using a pile pattern with a loose pick of 3 or more loom cycles in the pile loom described in the above technical field. To provide a start restriction method and device for preventing the occurrence of pile dropout caused by operator's work error even if there is a pile pick, and for facilitating setting for prohibiting the restart of a specific pile pick in a loom cycle. for the purpose.

The present invention is premised on a pile loom in which defective yarns are removed by an operator when defective weft insertion occurs. The pile loom has a pile pattern consisting of loose picks and fast picks in one pile forming cycle consisting of a plurality of loom cycles, and the reed is reed according to the pile pattern in each pile step during the one pile forming cycle. A pile is formed by changing the relative positions of the beating position and the fell position.

In addition, in the pile loom start-limiting method of the present invention, the same numerical value as the pile step is assigned to the loose pick in the pile pick and the first fast pick, which is the first fast pick. A start reversal number is stored in advance, and is set so that 1 is assigned to the second and subsequent fast picks when the pile pattern includes a plurality of the fast picks. when a weft insertion failure occurs during weaving, a numerical value corresponding to the pile pick in the loom cycle in which the weft insertion failure occurred is read from the starting reverse rotation number and stored as a current value; Along with the operation of the loom, +1 is added each time the rotation angle of the main shaft passes 0° with the forward rotation of the main shaft, and -1 is added each time the rotation angle of the main shaft passes 0° with the reverse rotation. until the updated current value becomes 0, the operation of the operation button is prohibited from starting the loom.

Further, in the method for restricting start-up in a pile loom according to the present invention, a start-up range defined as a range of rotation angles of the main shaft within the fast-pick loom cycle is set in advance, and the rotation angle of the main shaft other than the start-up range is set in advance. Then, it is also possible to prohibit starting of the loom by operating the operation button.

Further, a start limiting device for a pile loom according to the present invention is characterized by comprising the following first memory, second memory, calculator, and start controller. The first memory stores an activation reversal number set so that the same numerical value 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 the fast picks, the number of start reversals is stored in advance so that 1 is assigned to the second and subsequent fast picks. The second memory stores a numerical value read from the start reverse rotation number stored in the first memory in response to the generation of the defective weft insertion detection signal, and the number of the loom cycle in which the defective weft insertion occurred. A numerical value corresponding to the pile pick is stored as a current value. The computing unit increments the current value stored in the second storage unit by 1 each time the rotation angle of the main shaft passes 0° with the forward rotation of the main shaft accompanying the operation of the loom, is updated by -1 each time the rotation angle of the main shaft passes through 0°. The start controller monitors the updated current value and prohibits starting the loom by operating the operation button until the current value becomes zero.

Further, in the start limiting device in the pile loom of the present invention, the first memory stores a startable section defined as a range of rotation angles of the main shaft within the fast pick loom cycle, and the start controller However, the loom may be prohibited from being started by operating the operation button at rotation angles of the main shaft outside the startable section.

Even in a pile loom in which pile weaving is performed using a pile pattern with three or more loose pick cycles, the present invention can be applied to all loose pick cycles when the loom is restarted after being stopped due to defective weft insertion. This realizes prohibition of starting 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 allocate a numerical value (number of reverse rotations) to each pile step. The number of reverse rotation operations (more specifically, the number of forward and reverse rotation operations of the main shaft from the time when a defective weft insertion is detected to the time when the loom is reversed to the loom cycle in which the defective weft is removed and the loom can be started) It is intended to prohibit the start-up of the loom in relation to

On top of that, in the present invention, the setting for that purpose (setting of the number of start reversals) assigns the same numerical value as the pile step to the loose pick and the first fast pick, and includes a plurality of fast picks in the pile pattern. In some cases, it is done in the form of assigning 1 to the second and subsequent fast picks. As a result, according to the present invention, unlike the prior art, there is no need to set pile steps that prohibit restarting for each pile pattern one by one. labor and time can be reduced. Therefore, according to the present invention, even in a pile loom in which pile weaving is performed using a pile pattern with three or more loom cycles of loose picks, the setting (preparation) can be performed without much labor. Prohibition of activation can be realized.

Further, in the present invention, by predetermining a startable section as a range of the rotation angle of the main shaft (hereinafter referred to as "crank angle") and by prohibiting restarting at crank angles other than the startable section, the engine can be restarted. It is possible to prevent the occurrence of a situation in which the weft insertion is not normally performed immediately after the start-up.

More specifically, in a normal loom, weft insertion may not be performed normally 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 where the crank angle is within a range of rotation angles at which weft insertion can be performed normally (hereinafter referred to as "weft insertion possible angle"). Therefore, in the above-described present invention, the loom (main shaft) can be restarted by normal/reverse operation (hereinafter referred to as "restart preparation operation") for restarting after the defective weft is detected. (the loom cycle in which the current value has become 0). It is necessary to make the weft insertion angle possible.

However, in the reversing operation of the main shaft toward the final crank angle to be restarted in the restart preparation operation, due to an operator's mistake, the crank angle is within the loom cycle where the current value becomes 0. In some cases, the reversal operation is stopped in a state other than the above-described weft insertion possible angle. If the loom is restarted in this state, the weft insertion as described above will not be performed normally.

On the other hand, the rotation range in which the weft insertion is normally performed is stored in the first memory in advance as the startable section, and the start from the rotation angle of the main shaft outside the startable section is prohibited. By constructing the start controller, it is possible to prevent the occurrence of a situation in which the weft insertion is not normally performed immediately after restarting due to the above-described operation error.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing an example of a pile loom to which the present invention is applied; FIG. 4 is an explanatory diagram showing an example of a pattern setting screen for inputting and setting a weaving pattern set according to the present invention; 1 is a block diagram showing an example of a start limiting device in a pile loom of the present invention; FIG. 7 is a list showing an example of setting of the number of reverse rotations of starting corresponding to a plurality of pile patterns; FIG. 4 is an explanatory view showing the action of the pile loom when removing the weft and operating the loom in the correct procedure; FIG. 10 is an explanatory diagram showing the action of the pile loom when the operation button is operated in the wrong procedure; FIG. 11 is a block diagram showing a modified embodiment of the activation limiter;

FIG. 1 shows an example of a pile loom to which the present invention is applied. In the pile loom of this embodiment, the position of the cloth fell is moved in the front-rear direction according to the pile pattern by the terry motion mechanism, thereby changing the relative positions of the cloth fell position and the reed beating position to form a pile. It is assumed that the pile loom is a moving cloth type pile loom.

As shown in FIG. 1, a pile loom 1 has a warp beam (pile warp beam) 3 for supplying pile warps around which a large number of pile warps 2 are wound in a sheet form, and a pile warp beam 3 around which a large number of ground warp threads 4 are wound in a sheet form. It is equipped with two warp beams 3, 5 of warp beams (ground warp beams) 5 for supplying ground warp yarns.

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

The warp yarns 2 and 4 fed from the respective warp beams 3 and 5 form an opening 14 by vertical movement of the heald frame 8, and the weft yarn (not shown) inserted into the opening 14 is moved by the reed 11 to the cloth fell. A woven fabric 15 is formed by beating on the reed 12 . Also, the woven fabric 15 is wound around and guided by a cross guide 16 , and then passed through a take-up roll (surface roll) 17 and a guide roll 18 to be taken up by a take-up beam 19 .

In such a pile loom, pile weaving for forming a pile and ground weaving for forming a border or the like are repeatedly performed. The pile loom 1 of this embodiment is a so-called cloth moving type 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 achieved by displacing the tension roll 13 around which the ground warp 4 is wound and the cross guide 16 around which the woven fabric 15 is wound as described above. done. Incidentally, the configuration itself for displacing the tension roll 13 and the cross guide 16 in this manner is well known, so the description thereof is omitted, but in the illustrated example, the driving motor 21 is used as the driving source for the operation. The drive motor 21 is driven according to a pile pattern prestored 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 controller 30 . FIG. 2 shows a pattern setting screen 41 for setting a weaving pattern including a pile pattern on the input setting device 40 . A column 42 on the right side of the pattern setting screen 41 is a pile pattern setting display column 42 . The weaving pattern includes tension of pile warp and ground warp, loom rotation speed, weft type (color), weft density, shedding pattern, and pile pattern. On the pattern setting screen 41, the shedding pattern, color, weft density, and pile pattern are set for each loom cycle.

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

In the illustrated pattern setting screen 41, the pile pattern is set in the form of "5 3L-2F" or "4 3L-1F" in the column "P" in the pile pattern setting display column 42. FIG. However, with respect to the indication (eg, "5 3L-2F"), "L" indicates a loose pick and "F" indicates a fast pick, as described above. Thus, "3L-2F" represents a pile pattern consisting of 3 loose picks and 2 fast picks. The number on the left ("5" in "5 3L-2F") represents the total number of pile picks forming the pile pattern, that is, the number of loom cycles in 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" field in the pile pattern setting display field 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 a pile pattern of 3L-2F, "5 3L-2F" is set for the cells for 5 loom cycles.

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

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

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

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

As a result, the loom passes through the inertial rotation of the main shaft 24 for about one rotation from the time when the stop control is started, and temporarily reaches a crank angle of about 280° in the loom cycle following the loom cycle in which the defective weft insertion occurred, for example. It will be in a stopped state. Incidentally, the crank angle at which the engine is temporarily stopped is called "the crank angle at the temporary stop position". After that, the reversing operation is automatically started, and after the reversing operation is completed, the loom is stopped and waits for the operator. Further, the crank angle at which the standby state is reached is called "the crank angle at the secondary stop position". The reverse operation of the loom is performed so that the main shaft 24 is reversed by about one rotation. Therefore, the loom enters the standby state near the crank angle of 300° in the loom cycle in which the weft insertion failure occurs, and the crank angle passes through 0° in the course of its reverse rotation.

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

If the weft positioned closest to the fell after the removing work is the weft inserted in the loose-pick loom cycle (hereinafter referred to as the "loose-pick cycle"), then when restarting the loom, The weft must also be removed. Therefore, in such a case, the operator reverses the loom in the same manner as described above so that the weft is pulled out, and removes the weft.

After removing 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, around 300° of the crank angle in the loom cycle immediately before the loom cycle in which the last weft to be removed is removed. Therefore, the crank angle passes through 0° even in the process of reversing toward restarting the loom.

Then, when the loom is reversed to the starting angle, the operator terminates the operation of the reverse rotation button 25 to stop the loom, and operates the operation button 26 (hereinafter referred to as "operation button operation"). ). The loom is thereby restarted. Incidentally, the loom is also provided with a forward rotation button 27 . The operator operates the normal rotation button 27 as necessary to rotate the loom forward during the work of removing the weft and adjusting the crank angle of the loom to the starting angle.

In the pile loom described above, according to the present invention, the loom is provided with a start limiting device that limits restarting by operating the operation button after the operation of removing defective wefts. The activation restricting device will be described in detail below.

As shown in FIG. 3, the start limiting device 60 is connected at its input end to the main controller 30 and at its output end to the drive control device 50 for driving and controlling the main shaft motor 23 of the loom. In addition, the start limiting device 60 includes a first storage device 61 for storing the number of starting reverse rotations, etc., which will be described later, a current value calculator 62 connected to the first storage device 61 and the main controller 30 at the input terminal, It is configured to include a first storage unit 61, a current value computing unit 62, and an activation controller 63 connected to the main control unit 30 at the input terminal as constituent elements.

The loom has an encoder 28 as a device for detecting the crank angle. Moreover, the activation controller 63 in the activation limiter 60 is also connected to its encoder 28 at its input. A signal (angle signal θ) indicating the crank angle detected by the encoder 28 is input to the start controller 63 . Furthermore, the activation controller 63 is connected at its output to the drive controller 50 . The start 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.

The first storage unit 61 pre-stores set values relating to the prohibition of restarting the loom, such as the number of start reverse rotations and the startable interval. Among these set values, the start reversal number is a set value used for determining whether or not to prohibit restarting of the loom. The starting reverse rotation number is set for all pile patterns stored in main controller 30 .

Specifically, when the pile pick in the pile step is a loose pick and the first fast pick, the activation reverse number is set so that the same numerical value as the step number of the pile step is assigned. Also, for a pile pattern set to include a plurality of fast picks, the start reversal number is set such that 1 is assigned to the second and subsequent fast picks in addition to the above. Note that the numerical value assigned to each pile pick of the pile pattern in the start reversal number (hereinafter referred to as "assigned value") is the loom cycle in which the defective weft insertion is detected (hereinafter abbreviated as "detection cycle"). ) to the loom cycle that can be restarted.

More specifically, as described above, if the weft positioned closest to the cloth fell after the weft removal operation is the weft inserted by the loose pick cycle, it is necessary to remove the weft when the loom is restarted. There is By setting the weft located closest to the fell to the weft inserted in the fast-pick loom cycle (hereinafter referred to as the "fast-pick cycle"), problems in weaving after restarting the loom can be eliminated. can be prevented from occurring. Therefore, normally, the loom (main shaft 24) is reversed to the starting angle in the fast pick cycle that is closest to the detection cycle in the reverse direction, and the loom is restarted in that state. Incidentally, when the detection cycle is a loose pick cycle or the first fast pick cycle, the last fast pick cycle in the pile formation cycle immediately before the pile formation cycle including the detection cycle is the closest to the detection cycle. Fast pick cycle.

Thus, in the normal restart method, the loom is restarted in the fast pick cycle closest to the detection cycle. It is the previous loom cycle by the number of pile steps. In other words, by reversing the main shaft 24 in units of one revolution from the sensing cycle by the number of pile steps in the sensing cycle, the loom is brought into the loom cycle in which it is restarted.

The number of starting reverse rotations is used to determine whether or not to prohibit the restarting of the loom as described above. will be Therefore, when the detection cycle is the loose pick cycle or the first fast pick cycle, the allocated value of the number of starting reverse rotations is the same value as the step number of the pile step of the detection cycle. Also, if the detection cycle is the second or later fast pick cycle, the loom cycle immediately preceding it is also a fast pick cycle, so the closest fast pick cycle to the detection cycle is the one before the detection cycle. loom cycle. Therefore, in that case, the assigned value of the number of start reversals is set to one. Then, the number of starting reverse rotations is set for each pile pattern in such a manner that the allocation value as described above is assigned to each pile step in the pile pattern.

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

By the way, a general pile loom can handle weaving with a plurality of types of pile patterns. Therefore, also in the present embodiment, the number of starting reverse rotations stored in the first storage unit corresponds to each pile pattern (for example, all the numbers shown in FIG. 4). It is stored in the first storage as system data in an associated form.

Among the set values, the startable section is a section in which the loom can be restarted within the loom cycle (during one rotation of the main shaft), and is a section set within the crank angle range. In other words, the activatable section is a section determined to prohibit restarting at crank angles outside the set angle range. More specifically, the crank angle range in which the weft insertion can be performed normally immediately after the restart is set as the startable section. The angle range is determined based on the weaving conditions (for example, the number of revolutions of the loom, the injection start timing and injection pressure of the weft insertion nozzle, the width of the pile fabric to be woven, etc.). In addition, in this embodiment, the angular range of 241 to 340 degrees is set as the activatable section.

The current value computing unit 62 is composed of a storage unit 64 and a computing unit 65 as shown in FIG. Note that the storage unit 64 corresponds to the second storage unit in the present invention. In response to the generation of the detection signal S6 of the weft insertion failure (hereinafter simply referred to as the "detection signal"), the storage unit 64 stores a numerical value (assigned value) corresponding to the pile pick of the loom cycle in which the weft insertion failure occurred. value), and is configured to store, as the current value P, the assigned value N read from the start reversal number stored in the first storage unit 61 . The computing unit 65 corresponds to a computing unit in the present invention, and calculates the current value P stored in the storage unit 64 by adjusting the crank angle to 0° according to the forward and reverse rotation of the main shaft 24 accompanying the operation of the loom. It is configured to be updated each time it passes through. More details of the current value calculator 62 configured in this way are as follows.

First, as a premise, as shown in FIG. When the main controller 30 determines that a weft insertion failure has occurred based on the weft arrival signal S2 input from the weft feeler 22, the main controller 30 performs the above-described stop control of the loom, and It is configured to output a detection signal S6.

Further, the main controller 30 stores the pile pattern set by the input setting device 40 as described above. Then, main controller 30 changes the current step No. in the weaving pattern each time main shaft 24 rotates during weaving. and update the pile pattern and pile step to the updated step No. to control the drive motor. Update accordingly. Therefore, the main controller 30 grasps the pile pattern and pile steps at that point in each loom cycle. In addition, when outputting the detection signal S6 to the calculation unit 65 as described above, the main controller 30 also outputs a pile information signal S8 indicating the current pile pattern and pile step to the calculation unit 65. It is configured.

Based on such a premise, when the detection signal S6 and the pile information signal S8 are input from the main controller 30, the calculation unit 65 calculates the first is configured to read out the assigned value N of the number of start reversals from the storage device 61 of . Specifically, when the pile pattern indicated by 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 stores the first storage unit 4 is read out from 61 as the allocated value N of the number of start reverse rotations. Further, the calculation unit 65 is configured to store the read allocation value N as the current value P in the storage unit 64 in the current value calculation unit 62 .

Further, the calculation unit 65 updates the current value P stored in the storage unit 64 as described above each time the crank angle passes through 0° with the forward and reverse rotation of the main shaft 24 accompanying the operation of the loom. is configured to 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 main shaft 24 to the calculation unit 65 as the main shaft 24 is driven. . The rotation signal S10 is a signal that is output during a period other than during weaving. Therefore, the normal rotation signal is output to the calculation unit 65 even during the inertial rotation associated with the stop control as described above. Incidentally, in this embodiment, "during weaving" indicates the period from the start of operation of the loom to the occurrence of a cause of stoppage such as defective weft insertion. 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.

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

Further, when the 0° signal θa is input while the normal rotation signal is being input from the main control unit 30, the calculation unit 65 reads the current value P from the storage unit 64 and reads the current value P , and stores the value after the addition as a new current value P in the storage unit 64 (overwrites the current value P stored in the storage unit 64). Further, when the 0° signal θa is input while the reverse rotation signal is being input from the main controller 30, the calculation unit 65 reads out the current value P from the storage unit 64 and subtracts 1 from the current value P. It is configured to subtract and store the numerical value after the subtraction as a new current value P in the storage unit 64 .

By configuring the calculation unit 65 in this manner, the current value P stored in the storage unit 64 is changed to is updated to a value incremented by +1. 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° as the loom rotates in reverse. .

If the current value P is other than 0, or if the crank angle is outside the angle range (241 to 340°) set as the startable section even if the current value P is 0, the start controller 63 will not operate. It is configured to prohibit starting of the loom by button operation. The activation controller 63 is 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. The main controller 30 is configured to output an operation signal S12 to the activation controller 63 when the operation button 26 is operated. The activation controller 63 is also connected to the current value calculator 62 as described above. is configured to transmit the current value P set to the activation controller 63 .

Further, the activation controller 63 is configured to output a request signal S14 for the request to the current value calculator 62 (calculating section 65) when the operation signal S12 is input from the main controller 30. It is Further, when the current value P is 0, the activation controller 63 reads out the set value of the startable interval from the first storage device 61, and detects based on the set value and the angle signal θ input from the encoder 28. It is configured to compare with the current crank angle that has been set. As a result of the comparison, the start controller 63 outputs an operation command signal S4 to the drive control device 50 when the crank angle is within the angle range (241 to 340°) of the startable section. is configured to In other words, the activation controller 63 does not perform the above 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 the non-comparison. It is

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

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

The operation of the pile loom provided with the start limiting device 60 of this embodiment as described above will be described with reference to FIGS. FIGS. 5 and 6 show an example in which a weft insertion failure occurs in the first fast pick cycle, which is the pile step of step number 4, in the 3L-2F pile pattern. By the way, "1st (Loose)" and "4th (Fast)" shown on the upper side of the figure indicate pile steps and pile picks of the pile pattern in the loom cycle. For example, "4th (Fast)" indicates that the step number of the pile step is 4, which is the fast pick cycle. FIG. 5 is an explanatory view showing the action of the pile loom when the weft removal operation and the operation of the reverse rotation button 25 and the operation button 26 are performed in the correct procedure between the stop and restart of the loom. On the other hand, FIG. 6 is an explanatory diagram showing the action of the pile loom when the operation button 26 is operated in the wrong order. First, based on FIG. 5, the operation of the pile loom will be described in the order of (1) to (7) below when the weft removal work and the operation of the reverse rotation button 25 and the operation button 26 are performed in the correct procedure.

(1) When a defective weft insertion occurs, the main controller 30 controls the stop of the loom and the detection signal S6 and the pile information signal S8 to the current value calculator 62 (calculator 65) in the start limiting device 60 as described above. is output. Accordingly, the calculation unit 65 obtains the allocation value N of the number of starting reverse rotations from the first storage unit 61 based on the pile pattern (3L-2F) and the pile step (step number 4) indicated in the pile information signal S8. "4" is read, and "4" is stored in the storage unit 64 as the current value P. In FIG. 5, the current value P is shown in the vicinity of the crank angle at the time when the weft insertion failure occurred (circled number 4).

(2) With the stop control, the main shaft 24 coasts to the crank angle of the primary stop position and stops. Inside, it outputs a normal signal to the current value computing unit 62 (computing unit 65). In addition, since the inertial rotation is about one rotation as described above, the crank angle passes through 0° during the inertial rotation. Therefore, the 0° signal is output from main controller 30 to calculation unit 65 only once during inertial rotation. As a result, the calculation unit 65 reads the current value P "4" stored in the storage unit 64, adds 1 to it, and stores the added value "5" as a new current value P. Stored in unit 64 .

(3) Next, the loom is temporarily stopped at the crank angle of the primary stop position, and then automatically reversed to the crank angle of the secondary stop position for 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 value. It is output to the calculator 62 (calculator 65). As a result, the calculation unit 65 reads out the current value P "5" stored in the storage unit 64, subtracts 1, and stores the numerical value after the subtraction "4" as a new current value P. Stored in unit 64 . After the automatic reverse rotation, the loom enters a standby state at the crank angle of the secondary stop position (near the crank angle of 300°).

(4) When the operator arrives at the loom in the standby state, the operator operates the reversing button 25 to reverse the loom up to about 180° in the loom cycle, and remove the defective weft. I do.

(5) In this embodiment, since the weft insertion failure occurs in the first fast pick cycle, all the weft yarns inserted in the previous three loose pick cycles are removed. Specifically, in the same manner as described above, the loom is reversed up to about 180° in the previous loom cycle and the weft is removed. The weft is removed. In the process of removing the weft inserted by the three loose pick cycles, as shown in FIG. In the same manner as described above, subtraction processing is performed each 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 computing unit 62 is It is "1".

(6) After that, the operator operates the reversing button 25 to restart the loom, and reverses the loom to the starting angle (300°) in the previous loom cycle. Since the crank angle passes through 0° during the reverse rotation as well, subtraction processing is performed, and the current value P stored in the storage unit 64 becomes "0". When the operator operates the operation button 26 after the reverse rotation is completed, the operation signal S12 is output from the main controller 30 to the start controller 63 as described above.

(7) When the operation signal S12 is input, the activation controller 63 determines whether or not the current value P is zero. Since the current value P is "0" as described above, the activation controller 63 determines the angle range of the activation possible section (241 to 340° in this embodiment) and the current crank angle (activation angle : 300°). Since the current crank angle is within the angle range of the startable section, the start controller 63 outputs an operation command signal S4 to the drive control device 50, thereby restarting the loom.

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

(8) The operator may forget the number of wefts to be removed or make a mistake, and may restart the machine even though there are still wefts to be removed. Specifically, after removing the defective weft, the operator assumes that the loom can be restarted when the weft inserted in the third or second loose pick cycle is removed, and the loom reverses from there. is 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 up to the starting angle.

(9) However, as is clear 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 operation button 26 at that stage, the activation controller 63 does not perform the comparison as described above, and does not output the operation command signal S4 to the drive control device 50 .

(10) In addition, even if the removal work is performed correctly by the operator, the operator may make a mistake in the reverse operation toward the crank angle at which the loom is finally restarted, and the weft immediately after restarting. In some cases, the operation button 26 is operated in such a state that the loom is reversed to a crank angle at which the loading is not normally performed, that is, a crank angle outside the angle range of the startable section. However, in that case, the start controller 63 performs the above comparison, but since the crank angle at that time is not within the angle range of the startable section, as a result of the comparison, the engine is driven in the same manner as in the above case. The operation command signal S4 to the control device 50 is not output.

(11) In this way, when all the wefts to be removed are not removed (when the current value P is not 0) or when all the wefts to be removed are removed (when the current value P is 0) If the loom is reversed at a crank angle (a crank angle outside the angle range of the startable section) at which weft insertion cannot be performed normally immediately after restarting, the operation button 26 is operated. However, the operation command signal S4 is not output from the start limiting device 60 to the drive control device 50. FIG. Therefore, the driving control of the main shaft motor 23 by the drive control device 50 is not restarted, and the loom is not restarted. In other words, in those cases, restarting of the loom due to operation of the operation button 26 is restricted by the activation restricting device 60 .

It should be noted that the present invention is not limited to the above-described embodiment (the above-described embodiment), and modified embodiments such as the following 1) to 3) are also possible.

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

For example, depending on the loom, when the reverse rotation button 25 is operated in the stopped state, the loom is reversed to a preset crank angle in the previous loom cycle, and the reverse rotation is temporarily stopped at that crank angle. There is something configured in Therefore, in such a loom, the crank angle at which the loom is temporarily stopped should be set within the angle range of the startable section. In that case, the correct operation is to reverse the loom after the defective weft removal operation until the reverse rotation stops at that crank angle, and if there are remaining wefts to be removed, press the reversal button to remove more wefts. 25 is operated, and when all the wefts to be removed have been removed, the run button 26 is operated to restart the loom. As a result, at least the situation in which the operator operates the operation button 26 at a crank angle at which weft insertion cannot be performed normally immediately after restarting does not occur. good.

2) In the activation limiting device 60 of the above embodiment, the computing unit 65 in the current value computing unit 62 corresponding to the computing unit in the present invention reads out the current value P in addition to the function of updating the current value P as described above. In addition, it has a function of storing the read current value P in the storage unit 64 in the current value calculator 62 corresponding to the second storage unit. That is, the start limiting device 60 has a configuration in which the calculator 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 restricting device according to the present invention is not limited to the configuration in which the computing unit has the above function, and may be configured to have a dedicated part having the above function separately from the computing unit. Specifically, as shown in FIG. 7, the activation limiting device 60A is provided with a current value transmitter 66 as the above-mentioned dedicated part, and the current value transmitter 66 includes the first memory 61, the second 2 storage device 67 and the main controller 30 . In this configuration, the activation restriction device 60A has a configuration in which the arithmetic unit 68 is not connected to the first storage unit 61. FIG. Also, the detection signal S6 and the pile information signal S8 from the main controller 30 are output to the current value transmitter 66 instead of the calculator 68. FIG. In response to the input of the detection signal S6, the current value transmitter 66 converts the starting reverse rotation number stored in the first storage 61 to a numerical value ( The assigned value (N) in the above embodiment is read out, and the numerical value is stored in the second storage unit 67 as the current value (P). As a result, the second memory 67 stores the current value P corresponding to the point in time when the weft insertion failure occurs, as in the case of the above-described embodiment.

3) In the above-described embodiment, in the start limiting device 60, the number of start reverse rotations is stored as system data in the first storage device 61, so that the pile loom can handle weaving with a plurality of types of pile patterns. , a plurality of pile patterns corresponding to each of the plurality of types of pile patterns are stored. However, in the present invention, the number of start reversals is not limited to those stored in the first storage device in accordance with the assumed plural types of pile patterns. may be stored in the first memory. The following two modes (first and second modes) are examples of modes for storing (setting) only the start reversal number corresponding to the pile pattern actually used for weaving in the first memory. can be considered.

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

In addition, when the input setting of the assigned value is completed, the input setting device transmits the assigned value (the number of reverse rotations of starting) set to the input to the first storage device in the form of being associated with the pile pattern. should be configured to In the case of this configuration, in the preparatory stage before starting a new weaving, as the pile pattern to be used for the weaving is set, the input setting of the start reverse rotation number corresponding to the pile pattern is performed. It will be done by the operator. When the input setting is completed, the number of start reverse rotations corresponding to the pile pattern used for weaving at that time is stored in the first storage device. Note that the assigned value for the number of reverse rotations of startup is determined based on the (simple) setting mode in which the relationship with the pile pattern is determined as described above, so the burden on the operator in the input setting is I would say small.

A second aspect configures the input setting device so that when a pile pattern is set on the pattern setting screen, the number of starting reverse rotations corresponding to the pile pattern is automatically set. Specifically, in the second aspect, for example, a program is installed in the input setting device to determine the number of start reverse rotations (allocated value) based on the setting aspect as described above by referring to the pile pattern that has been input and set. When a pile pattern is input and set on a pattern setting screen, the program automatically sets the number of starting reverse rotations according to the input and set pile pattern.
In addition, the input setting device may be configured to transmit the determined number of start reversals to the first memory in a form associated with the pile pattern. In this configuration, when the setting of the pile pattern to be used for the weaving is completed in the preparation stage, the number of starting reverse rotations 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 scope 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 heddle frame 9 heddle 11 reed 12 fabric fell 13 tension roll 14 opening 15 fabric 16 cross guide 17 winding roll (surface roll)
18 Guide roll 19 Winding beam 21 Drive motor 22 Weft feeler 23 Main shaft motor 24 Main shaft 25 Reverse rotation button 26 Operation button 27 Forward rotation button 28 Encoder 30 Main controller 40 Input setting device 41 Pattern setting screen 42 Pile pattern setting display field 43 Leftmost column 43a Number 44 Shedding pattern setting display column 44a Part above the shedding pattern setting display column 45 Color and weft density setting display column 50 Drive control device 60, 60A Start limiting device 61 Current value computing unit 63 Activation controller 64 Storage unit 65 Computing unit 66 Current value transmitter 67 Second storage unit 68 Computing 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 Allocation value P Current value

Claims (4)

One pile forming cycle consisting of a plurality of loom cycles is composed of a pile pattern consisting of pile picks that are loose picks and fast picks, and at each pile step in the one pile forming cycle, the beating position and cloth fell are formed in accordance with the pile pattern. A start limiting method for a pile loom that forms a pile by changing a position relative to a position, and in which an operator removes a defective yarn when a defective weft insertion occurs, the method comprising the steps of:
The loose pick in the pile pick and the first fast pick, which is the first fast pick, are the start reversal numbers set so that the same numerical value as the pile step is assigned, and the pile pattern includes a plurality of the fast picks. pre-storing the startup reversal number set so that 1 is assigned to the second and subsequent fast picks when a topic is included;
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 occurred is read from the start reverse rotation number and stored as a current value;
With subsequent operation of the loom, the stored current value is incremented by 1 each time the rotation angle of the main shaft passes 0° as the main shaft rotates forward, and is incremented by 1 as the rotation angle of the main shaft passes 0° as the rotation angle of the main shaft rotates in the reverse direction. Updated to be -1 each time it passes,
1. A method for restricting start-up in a pile loom, characterized by prohibiting start-up of the loom by operating an operation button until the updated current value becomes zero. A bootable interval defined as a range of rotation angles of the main shaft within the fast pick loom cycle is set in advance,
2. The method of restricting start-up in a pile loom according to claim 1, wherein start-up of the loom by operation of an operation button is prohibited at a rotation angle of the main shaft outside the start-up range. One pile forming cycle consisting of a plurality of loom cycles is composed of a pile pattern consisting of pile picks that are loose picks and fast picks, and at each pile step in the one pile forming cycle, the beating position and cloth fell are formed in accordance with the pile pattern. A start limiting device for a pile loom that forms a pile by changing a position relative to a position, and in which a worker removes a defective yarn when a defective weft insertion occurs,
The loose pick in the pile pick and the first fast pick, which is the first fast pick, are the start reversal numbers set so that the same numerical value as the pile step is assigned, and the pile pattern includes a plurality of the fast picks. a first storage storing in advance a starting reversal number set so that 1 is assigned to the second and subsequent fast picks when a topic is included;
A numerical value read out from the number of starting reverse rotations stored in the first memory upon generation of the detection signal of the defective weft insertion and corresponding to the pile pick of the loom cycle in which the defective weft insertion occurred. a second memory for storing current values;
The current value stored in the second memory is incremented by 1 each time the rotation angle of the main shaft passes through 0° as the main shaft rotates forward during the operation of the loom, and the rotation angle of the main shaft rotates in the reverse direction. A computing unit that updates to -1 every time it passes 0°,
a start controller that monitors the updated current value and prohibits starting the loom by operating the operation button until the current value reaches 0;
A start limiting device for a pile loom, comprising: The first storage stores an activatable section defined as a range of rotation angles of the main shaft within the fast-pick loom cycle,
4. The start limiting device for a pile loom according to claim 3, wherein the start controller prohibits the start of the loom by operating the operation button at a rotation angle of the main shaft other than the startable section.

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