JP4192746B2 - Package weight prediction method, package manufacturing method, and yarn winder - Google Patents

Description

  The present invention relates to a yarn winding machine provided with a plurality of winding units that wind a yarn unwound from a yarn supplying bobbin back to a winding bobbin to form a package, and also relates to a package weight prediction method and a package manufacturing method. Is.

  A yarn winder such as an automatic winder includes a plurality of winding units that join a large number of yarns and wind them around a cone-shaped winding bobbin while removing defects in the yarn wound around the yarn feeding bobbin. In each winding unit, the yarn length is measured at the time of rewinding to the winding bobbin, and when the package becomes a predetermined length, the package is separated. Then, the package is weighed and inspected to determine whether the weight is a predetermined package weight. If the package weight is insufficient, for example, a rewind is added (corrected) using a timer so as to compensate for the shortage. It is like that.

However, in the method of measuring the weight of the package and correcting the rewinding after obtaining the package of a predetermined length as described above, various processes such as a package separation process, a weighing process, and an installation process are required. There is a problem that it takes a long time to obtain a desired package, resulting in low productivity.
Japanese Utility Model Publication No. 5-5768

  The problem to be solved is that the correction of the amount of rewinding until a desired package is obtained is completed in a short time to increase productivity.

The invention of claim 1 is a method for predicting the weight of a package in an automatic winder in which a plurality of winding units are wound in parallel by winding a spinning bobbin yarn by rotation of a winding drum. The package weight at the time of full winding in each winding unit is obtained based on the total number of rotations of the winding drum from the beginning of winding of the winding drum corresponding to the predetermined package weight in the middle of rewinding acquired for each unit. It is characterized by prediction.

  In the above-described configuration, in the field related to the yarn winding machine until the present invention is made, the total number of package rotations after the completion of rewinding and the package weight have a certain degree of proportionality, but an exact proportional relation. It was thought that there was no problem, and after the completion of the rewinding, measures such as actually measuring the package weight were taken, and then a measure was taken to correct the shortage by adding the rewinding. However, as a result of repeating various tests and the like, in a group composed of a plurality of winding units, it was found that there is a high correlation between the total number of package rotations during winding and the package weight after completion of winding. . That is, it has been found that if the total number of package rotations during rewinding is small, the package weight after completion of rewinding decreases, and if the total number of package rotations during rewinding is large, the package weight after completion of rewinding increases. This is because slippage occurs between the winding drum that drives the surface of the package and the package due to a mechanical error of each weight, and the rotation of the winding drum and the rotation of the package do not necessarily correspond one-to-one. However, this is considered to be the cause of the weight variation between the winding units. And this invention was completed based on such knowledge. As a result, by predicting the package weight after completion of rewinding in the middle of rewinding, the amount of rewinding until a desired package is obtained as compared with the case of measuring the package weight after completion of rewinding as in the past. Corrections such as addition can be completed in a short time, and thus productivity can be improved.

  The invention of claim 2 is a method of manufacturing a package in an automatic winder in which a number of winding units that wind a spinning bobbin yarn by revolving a winding drum to form a package are arranged in parallel. The total number of package rotations at the time when the total number of rotations from the beginning of winding of the winding drum corresponding to the package weight is obtained for all winding units, and between each winding unit at full winding based on the total number of package rotations. The feature is that the amount of rewinding is corrected so as to reduce the variation in the package weight.

According to said structure, the variation in the package weight in the some package produced in parallel can be reduced. As a result, it is possible to prevent excess or deficiency occurs in the package weight. Moreover, since the amount of rewinding is corrected during the rewinding, productivity can be improved.

  A third aspect of the present invention is the method of manufacturing a package according to the second aspect, wherein the rewinding amount is corrected based on a standard deviation of the total number of package rotations during the rewinding. According to said structure, it becomes possible to fully implement | achieve reduction of the variation in package weight.

  The invention of claim 4 is a yarn winding machine, and a plurality of winding units for performing a winding process of winding the yarn around the bobbin by rotation of the winding drum to form a package, and winding of these winding units. A machine control device capable of controlling and managing the processing in units of groups. The machine control device has a total number of rotations from the start of winding of the winding drum corresponding to a predetermined package weight during rewinding. Package rotation total number acquisition means for acquiring the total number of package rotations for all winding units in the group, and variation grasping means for obtaining a variation in package weight between the winding units in the group based on the total number of package rotations. It is characterized by that.

  According to said structure, the package weight after completion | finish of rewinding of each winding unit can be estimated based on the variation in the package weight in the middle of rewinding. As a result, by adjusting the amount of rewinding of each winding unit, it is possible to reduce variations in package weight among the winding units in the group. Further, since the amount of rewinding can be corrected during the rewinding, productivity can be improved.

  A fifth aspect of the present invention is the yarn winding machine according to the fourth aspect, wherein the variation grasping means obtains variation based on a standard deviation of the total number of package rotations. According to said structure, the package weight after completion | finish of rewinding of each winding unit can be estimated comparatively correctly based on the variation in the package weight in the middle of rewinding.

  A sixth aspect of the present invention is the yarn winding machine according to the fourth aspect, wherein the machine base control device grasps the variation grasping means so as to reduce the variation in the package weight after the completion of the rewinding. It is characterized by having a rewinding amount correcting means for correcting the rewinding amount for each winding unit based on the variation in the package weight. According to said structure, the variation in the package weight in each winding unit can be reduced automatically without an operator. Moreover, since the amount of rewinding is corrected during the rewinding, productivity can be improved.

The invention of claim 7 is the yarn winder according to any one of claims 4 to 6 , wherein the machine control device directly calculates the total number of package rotations of each winding unit in the group. And / or a variation display means for indirectly displaying the graph. According to the above configuration, the operator can easily understand the degree of variation in the total number of package rotations of each winding unit.

The invention of claim 8 is the yarn winding machine according to claim 7 , wherein the machine control device deviates from the average value of the total number of package rotations of all winding units in the group by a predetermined value or more. An abnormality notifying means for specifying a winding unit and notifying an operator is provided. According to said structure, since the winding unit which is performing abnormal rewinding can be discovered at an early stage, the subsequent countermeasures can be taken with a margin.

  According to the present invention, the package weight after completion of rewinding can be predicted in the middle of rewinding, so that correction such as addition of the rewinding amount until a desired package is obtained can be completed in a short time. There is an advantage that can be increased.

  The purpose of improving the productivity by correcting the amount of rewinding of the package in a short time was realized by grasping the variation in the total number of package rotations during rewinding.

An embodiment of the present invention will be described below with reference to FIGS.
As shown in FIG. 5, the yarn winding machine according to the present embodiment is capable of setting a plurality of winding units 1 arranged in parallel and operating conditions individually for these winding units 1. The machine control device 4 capable of monitoring the operation is provided as a machine stand 61 of one line. In the present embodiment, the case where the machine base 61 has one line will be described. However, when the machine base 61 of a plurality of lines is connected so that data can be transmitted and received by a host control apparatus such as a production management apparatus, You may be made the structure which can be centrally managed by the control apparatus.

  As shown in FIG. 4, the winding unit 1 includes a unwinding auxiliary device 2, a twist-preventing device in the winding direction of the yarn Y wound around a yarn supply package B (yarn supply yarn body) such as a fine spinning bobbin. A winding unit main body 51 in which a combined tension applying device 3, a yarn joining device 5, a slab catcher 6, and a driving drum 7 are arranged in this order, and a unit controller 50 that controls each device of the winding unit main body 51 are provided. Yes. That is, the automatic winder unwinds the yarn Y from the yarn supply package B by the rotation of the drive drum 7 and contacts the package P with the drive drum 7 while rotating the package P wound around the bobbin Bf. It is configured to take up.

  The tension applying device 3 is a gate-type device that is disposed above the yarn feeding package B via the unwinding assisting device 2 and alternately arranges movable comb teeth 12 with respect to fixed comb teeth 11. . The yarn joining device 5 performs a yarn joining process for joining the separated yarn Y on the yarn supply package B side and the yarn Y on the package P side. The yarn joining device 5 includes a yarn joining device main body 35, a lower yarn suction guide member 36 for guiding the yarn Y on the yarn supply package B side to the yarn joining device main body 35, and the yarn Y on the package P side. And an upper thread suction guide member 37 for guiding the upper thread.

  The lower thread suction guide member 36 has a suction port 36a that can be opened and closed, and is rotatable about a shaft 36b. When the yarn Y is forcibly cut, the suction port 36a is opened, and the tension applying device 3 also serving as a twist stopper is opened, and the yarn end on the yarn feeding side is sucked into the suction port 36a. When the yarn end is held by the suction port 36a and turned from the lower yarn end catching position to the upper yarn end guiding position, the lower yarn is guided into the yarn joining device main body 35 and the tension applying device 3. Since the state where the suction port 36a is between the yarn supply package B and the tension applying device 3 is set as the standby position, the yarn end on the yarn supply side can be quickly captured after the lower yarn suction guide member 36 is actuated.

  The upper thread suction guide member 37 has a suction port 37a and is rotatable about a shaft 37b. When the yarn Y is forcibly cut, the yarn Y turns to the upper yarn end catching position and sucks the yarn end wound around the package P by the suction port 37a. Further, the upper thread suction guide member 37 pivots downward in a state where the upper thread is captured, whereby the upper thread is guided to the yarn joining device main body 35. Then, the yarn joining device main body 35 performs the joining of the upper yarn and the lower yarn.

  The slab catcher 6 is, for example, a capacitance type or optical type yarn thickness detection device, and detects a yarn defect such as a slab by processing a signal from the slab catcher 6 with an analyzer (not shown). When a yarn defect is detected, the yarn Y being wound up is cut by the attached cutter 6a, the defective portion is removed during the yarn joining process by the yarn joining device 5, and then the yarn feeding device 5 is connected to the yarn supply package B side. The yarn Y and the yarn Y on the package P side are spliced.

  The drive drum 7 is configured as a traverse drum having a traverse groove, and rotates the package P in contact with the package P and traverses the yarn Y wound around the package P. The drive drum 7 is rotationally driven by a motor 41. The rotation speed of the motor 41 is controlled by a control signal output from the unit control device 50 via a drum rotation control device 42 (inverter).

  In the vicinity of the rotation shaft 41a of the motor 41, a drum rotation number measuring sensor 43 for detecting the rotation number of the rotation shaft 41a is provided. The drum rotation number measuring sensor 43 outputs a detection signal to the unit controller 50 for each rotation of the rotation shaft 41a. Further, the bobbin Bf around which the package P is wound is rotatably supported by the shaft member 44. In the vicinity of the shaft member 44, a package rotation speed measurement sensor 45 that detects the rotation speed of the shaft member 44 is provided. The package rotation speed measurement sensor 45 outputs a detection signal to the unit controller 50 for each rotation of the shaft member 44.

  As shown in FIG. 1, the unit control device 50 includes a communication unit 52 connected to the machine control device 4 so that data communication is possible, and a drum rotation total number default value storage unit 53 connected to the communication unit 52. A correction value storage unit 54, a drum rotation total final value storage unit 55, and a package rotation total output unit 56. The drum rotation total number default value storage unit 53 is a storage area secured in the memory so as to store the drum rotation total number default value transmitted from the machine control device 4. Here, the “total number of drum rotations” means the value of the total number of drum rotations when the amount of rewinding (package weight) is 400 g, for example, during the rewinding of the yarn Y. In addition, if it is in the middle of rewinding, it is not limited to 400g.

  The correction value storage unit 54 is a storage area secured in the memory so as to store the correction value transmitted from the machine base control device 4. The drum rotation total number final value storage unit 55 is a storage area secured in the memory so as to store the drum rotation total number full winding value transmitted from the machine base control device 4. However, when the correction value is stored in the correction value storage unit 54, the drum rotation total final value storage unit 55 adds the value obtained by adding or subtracting the correction value to the drum rotation total number full winding value. Store as a value. Here, the “correction value” means a value (rewinding amount) set so as to reduce the variation in the package weight between the winding units 1 in the group after the completion of the rewinding. Further, the “drum rotation total final value” means the drum rotation total of the final package weight (rewinding completion) that is full, and a value that stops the winding unit 1. The package rotation total number output unit 56 has a function of outputting the total number of package rotations during and after the rewinding to the machine control device 4 via the communication unit 52.

  A package rotation total counter 57 is connected to the package rotation total output unit 56. An input / output unit 58, a first drum rotation total number comparison unit 59, and a second drum rotation total number comparison unit 60 are connected to the package rotation total number counting unit 57. The input / output unit 58 is also connected to the drum rotation total number counting unit 61, and the drum rotation total number counting unit 61 is connected to the first drum rotation total number comparison unit 59 and the second drum rotation total number comparison unit 60. Yes. The second drum rotation total number comparison unit 60 is connected to the input / output unit 58 via the stop unit 62 in addition to the package rotation total number counting unit 57 described above.

  The input / output unit 58 that is connected as described above has a function of transmitting and receiving an output signal and an input signal to the winding unit main body 51. Specifically, for example, a function of outputting a control signal to the drum rotation control device 42 of the winding unit main body 51 to rotate the motor 41 (drive drum 7), or an input signal from the package rotation speed measurement sensor 45. And a function for receiving the input signal from the drum rotation number measuring sensor 43 and outputting it to the drum rotation number counting unit 61.

  Further, the package rotation total counting unit 57 counts up the count value every time the detection signal of the package rotation number measuring sensor 45 is input via the input / output unit 58, whereby the total number of rotations of the package P (package rotation) (Total number) from the start of the rewinding to the completion of the rewinding, and a function of outputting the total number of package rotations when the data output state is reached to the total number of package rotations output unit 56. The drum rotation total number counting unit 61 counts up the count value every time the detection signal of the drum rotation number measuring sensor 43 is input via the input / output unit 58, so that the total number of rotations of the driving drum 7 (the total number of drum rotations) ) From the start of rewinding to the completion of rewinding, and a function of outputting the total drum rotation number to the first drum rotation number comparison unit 59 and the second drum rotation number comparison unit 60.

  Further, the first drum rotation total number comparison unit 59 compares the drum rotation total number count value of the drum rotation total number counting unit 61 with the drum rotation total number default value of the drum rotation total number default value storage unit 53 described above, and both values match. When this is done, it has a function of setting the operation state of the package rotation total counting unit 57 to the data output state. On the other hand, the second drum rotation total number comparison unit 60 compares the drum rotation total number count value of the drum rotation total number counting unit 61 with the drum rotation total number final value stored in the drum rotation total number final value storage unit 55, and the two values match. When it does, it has the function to set the package rotation total counting part 57 to a data output state, and has the function to make the stop part 62 into an operation state.

  The stopping unit 62 has a function of stopping the winding unit main body 51 via the input / output unit 58 at the timing when the operating state is set. The package rotation total number output unit 56, the package rotation total number counting unit 57, the first drum rotation total number comparing unit 59, the second drum rotation total number comparing unit 60, the drum rotation total number counting unit 61, and the stopping unit 62 are implemented in hardware. It may be configured, or may be configured by software. That is, the same function may be exhibited by a program comprising the winding unit operation routine of FIG.

  The unit control device 50 configured as described above is connected to the machine base control device 4 so as to be able to transmit and receive data. The machine base control device 4 has a storage unit and a central control unit (not shown). The storage unit includes a large-capacity storage device, and includes a correction value setting base table shown in FIG. 6, a correction calculation table shown in FIG. 7, and a correction execution table shown in FIG.

As shown in FIG. 6, the correction value setting base table includes “drum rotation total number default value”, “drum rotation total number full winding value”, “simple correction value”, “σ correction value”, “CV reference value”, and “ "Warning value" for each product type. In the correction value setting base table, each data is registered as a fixed value in advance, and can be rewritten as necessary. Here, the “drum rotation total number default value” is the value of the drum rotation total number during the rewinding as described above. The “total drum rotation total winding value” is a value when the package P is fully wound in a normal state. The “simple correction value” is the amount of rewinding transmitted to the winding unit 1 as a correction value, in which the total number of package rotations during rewinding is set according to a relationship with a predetermined threshold corresponding to the standard deviation . For example, in the case of product type A (GT-30), when the value is equal to or greater than the predetermined threshold value, “−a3” is transmitted as a correction value, and is added to “a2” of the drum rotation total number, thereby rotating the drum. The total number final value is “a2-a3”. “Σ” is a standard deviation value .

Further, the “σ correction value” is set according to the relationship between three predetermined threshold values (first threshold value, second threshold value, and third threshold value) according to the standard deviation and the total number of package rotations in the middle of rewinding. The amount of rewinding as a correction value. For example, in the product A (GT-30), when the total number of package rotations is in the range between the first threshold value and the second threshold value, “−a4” is transmitted as the correction value, and the total number of package rotations is the second threshold value and the third threshold value. If it is within the range, “−a5” is transmitted as the correction value, and “−a6” is transmitted as the correction value when the total number of package rotations exceeds the third threshold . Further, the “CV reference value” is compared with a coefficient of variation calculated from the total number of package rotations in the middle of rewinding, and is a threshold value for determining whether or not to perform the above simple correction and σ correction. is there. The “warning value” is compared with the total number of package rotations of each winding unit 1 in the middle of rewinding, and the winding unit 1 with the total number of package rotations deviating from the average value of the total number of package rotations by more than the warning value It is a threshold value for determining that there is an abnormality.

  The correction calculation table is a data table reserved for calculation. As shown in FIG. 7, the “group”, “unit number”, “total number of package rotations”, “average value”, “deviation”, “ "Standard deviation" and "Coefficient of variation" are rewritable. “Group” means an operation unit of a plurality of winding units 1 set to produce a package P of the same lot. The “unit number” is an identification number unique to the winding unit 1. “Total number of package rotations” is the number of rotations of the package P in the middle of rewinding. The “average value”, “deviation”, “standard deviation” and “variation coefficient” are calculated based on the total number of package rotations for each group.

  The correction execution table is a data table reserved for managing the operation status of each group. As shown in FIG. 8, "group", "product type", "automatic correction", and "drum rotation total number default" Value ”,“ Correction method ”,“ Simple correction value ”,“ σ correction value ”,“ σ reference value ”, and“ Warning value ”. Here, “automatic correction” sets whether or not correction is automatically performed. “ON” permits correction, and “OFF” prohibits correction. “Correction method” sets whether to perform correction by simple correction or σ correction. For example, in the case of “simple correction”, “simple correction value” corresponding to “product type” is read from the correction value setting base table of FIG. 6 and set.

  On the other hand, as shown in FIG. 2, the central control unit of the unit control device 50 is capable of executing a machine control side correction processing routine. The machine control side correction processing routine makes it possible to predict the package weight after completion of rewinding in each winding unit 1 based on the total number of package rotations in the group by using each table described above. The amount of rewinding is corrected so as to reduce the variation in the package weight between the winding units 1 after the completion of rewinding. The central control unit may be provided with a function equivalent to a machine control side correction processing routine in hardware.

In the above configuration, the operation of the yarn winder will be described.
As shown in FIG. 2, first, the machine base control device 4 is operated by the operator, and the automatic correction ON / OFF setting screen of FIG. 9 is displayed. The automatic correction ON / OFF setting screen is formed based on the data stored in the correction execution table of FIG. Specifically, as shown in FIG. 9, each group (GR1, GR2, GR3,...), And the varieties (GT-30, GT-40, GT-12,...) Produced in each group, The automatic correction setting state (ON / OFF) is displayed (S1).

  Thereafter, it is determined whether or not the automatic correction ON / OFF is switched (S2). If switching has not been performed (S2, NO), it is subsequently determined whether or not to display a correction content setting screen (S6). On the other hand, when the automatic correction ON / OFF is switched (S2, YES), it is subsequently determined whether or not the switching is from the ON state to the OFF state (S3). In the case of switching from the ON state to the OFF state (S3, YES), initial setting of the switching target group is performed. Specifically, as shown in FIG. 8, when the automatic correction of the group G2 is switched to the OFF state, the simple correction value and the σ correction value corresponding to the group G2 are set to “0”, Correction at the time of rewinding is prohibited (S4).

  On the other hand, as shown in FIG. 2, when the automatic correction is switched from the OFF state to the ON state (S3, NO), the switching target group is initially set. Specifically, as shown in FIG. 8, if the automatic correction of the group G1 is switched to the ON state, the drum rotation total number default value, the simple correction value corresponding to the product type A (GT30) handled in the group G1, The σ correction value, the CV reference value, and the warning value are read from the correction value base table of FIG. 6 and stored in the corresponding area of the correction execution table (S5).

  Next, it is determined whether or not to display the correction content setting screen (S6). When the operator operates to display the correction content setting screen (S3, YES), the correction content setting screen of FIG. 10 is displayed. It is desirable that the correction content setting screen be displayed on condition that a password is entered. The correction content on the correction content setting screen will be described in detail. In addition to the items displayed on the automatic correction ON / OFF setting screen in FIG. 9, “monitorgram (g)”, “automatic correction method”, “correction value” and A display item of “monitor rpm-CV” is displayed corresponding to each group. Here, “monitorgram (g)” is the amount of rewinding during the rewinding for obtaining the total number of package rotations, and is normally set to 400 g. Then, the total drum rotation number corresponding to this monitorgram is set as the default drum rotation total value. The “automatic correction method” indicates either simple correction or σ correction. Then, a correction value set based on the contents of the automatic correction method and ON / OFF of the automatic correction is displayed. “Monitor rpm-CV” displays a coefficient of variation calculated based on the total number of package rotations corresponding to a package weight of, for example, 400 g obtained during rewinding (S7).

  When the correction content setting screen is displayed as described above, a change in the correction content is accepted (S8). That is, the numerical values of “monitorgram (g)” and “correction value” can be changed. The “automatic correction method” enables switching between simple correction and σ correction.

  Next, it is determined whether or not the correction content has been changed (S9). The determination in S9 is also performed when the correction content setting screen is not displayed in S6 described above (S6, NO) and when the switching target group is initially set in S4. If the change of the correction content is not completed (S9, NO), the process is re-executed from the display of the automatic correction ON / OFF setting screen in S1. On the other hand, when the change of the correction content is completed (S9, YES), the correction content data including the correction content such as the drum rotation total default value and the drum rotation total full winding value is transmitted to the winding unit 1 of each group. (S10). And it waits in the state which can receive the package rotation total number signal transmitted from the winding unit 1 (S11).

  In each group of winding units 1, as shown in FIG. 3, a winding unit side operation routine is executed. When the correction content data is received, the drum rotation total default value included in this signal is stored in the drum rotation total default value storage unit 53 in FIG. 1, and the drum rotation total full winding value is set as the drum rotation total final value in FIG. Store in the storage unit 55 (G1). Thereafter, as shown in FIG. 4, the operation of the winding unit main body 51 is started, and the yarn Y is wound around the bobbin Bf by the rotation of the driving drum 7 to form the package P (G2).

  When the operation of the winding unit main body 51 is started, detection signals from the drum rotation number measuring sensor 43 and the package rotation number measuring sensor 45 are respectively fetched as shown in FIG. Each time each detection signal is input, the drum rotation total number and the package rotation total number in the drum rotation total counting unit 61 and the package rotation total counting unit 57 are counted up. At this time, as shown in FIG. 3, it is determined whether or not the drum rotation total count value of the drum rotation total count unit 61 matches the drum rotation total count default value of the drum rotation total default value storage unit 53. (G3). If the two values do not match (G3, NO), G3 is repeatedly executed. On the other hand, if the two values match (G4), a package rotation total signal including the package rotation total count value is transmitted to the machine control device 4 (G4).

  As shown in FIG. 2, the machine base control device 4 stands by in a state where it can receive a package rotation total number signal from each winding unit 1 (S 11), and receives a package rotation total number signal from each winding unit 1. Upon reception, the package rotation total count value included in the signal is extracted as the package rotation total number, and then stored in the storage area of the package rotation total corresponding to the unit number of the winding unit 1 in the correction calculation table of FIG. Then, it is determined whether or not the total number of package rotations of all the winding units 1 in the group has been collected (S12). If the total number of package rotations has not been collected (S12, NO), re-execution from S11 continues to store the total number of package rotations. Is done. In S12, it is determined whether or not the package rotation speeds of all the winding units 1 have gathered. However, the present invention is not limited to this, and is not limited to this. It may be determined whether or not the number of units of about number −2 ″ has gathered.

  On the other hand, when the total number of package rotations of all the winding units 1 is collected (S12, YES), it is subsequently determined whether or not the group correction mode, that is, automatic correction is set to ON (S13). If the automatic correction is in an ON state (S13, YES), as shown in FIG. 7, the average, deviation, standard deviation, and variation coefficient of the total number of package rotations in the group are calculated (S14). Thereafter, it is determined whether or not the coefficient of variation is less than the CV reference value such as 2% (S15). If it is not less than the CV reference value (S15, NO), it is determined that the correction is effective in suppressing variation. A correction value corresponding to the correction method is transmitted to each winding unit 1 in the group (S16). When the group correction mode is not ON (S13, NO) and when the variation coefficient is less than the CV reference value (S15, YES), the correction value “0” is set to the group so that correction is not performed. Is transmitted to all the winding units 1.

  When the correction value is transmitted to the winding unit 1 as described above, the package rotation total number graph window is subsequently displayed on all or part of the display screen. In this window, as shown in FIG. 11, the total number of package rotations of each winding unit 1 in the group is directly and indirectly displayed as a graph. That is, the window screen is divided into an upper display area and a lower display area. In the upper display area, the relationship between the unit number of the winding unit 1 and the total number of package rotations is displayed as a bar graph, and in the lower display area, the difference between the unit number of the winding unit 1 and the average value is displayed. The relationship is shown as a bar graph. The graph display may be either direct or indirect (S18). As a result, the operator can determine the full package weight after the completion of the rewinding from the high correlation between the total number of package rotations during the rewinding and the package weight at the time of full winding by visually observing the package rotation total number graph window. It is possible to predict.

  Subsequently, the absolute value of the difference between the average value of the total number of package rotations of all the winding units 1 in the group and the total number of package rotations is obtained. Then, the winding unit 1 whose absolute value of the difference is greater than or equal to the warning value is specified, and warning display by color display or character display is performed on the graph of the specified winding unit 1. Thus, the operator can easily identify the winding unit 1 having the total number of package rotations that deviates by a predetermined value or more from the average value of the total number of package rotations, and recognize that this winding unit 1 is in an abnormal winding state. Is possible (S19).

  Thereafter, it is determined whether or not the correction processing for all the groups has been completed (S20), and if not completed, the processing is re-executed from S11 so as to perform the correction processing for the remaining groups. On the other hand, when the correction processing for all groups is completed (S20), this routine is terminated. Instead of ending this routine, a correction value may be calculated every time a certain number of package data is updated.

  On the other hand, in the winding unit 1, as shown in FIG. 3, when receiving the correction value from the machine base control device 4, the correction value is stored in the correction value storage unit 54 of FIG. The total number of drum rotations in the final value storage unit 55 is added to the full winding value (G6). Then, it is determined whether or not the drum rotation total count value matches the drum rotation total full winding value (G7). If both values do not match (G7, NO), G7 is continued until they match. On the other hand, if the two values match (G7, YES), the rewinding process in the winding unit body 51 is stopped.

  As described above, in this embodiment, as shown in FIG. 1 to FIG. 3, the rewinding process in which the yarn of the yarn supply package B (yarn supply bobbin) is rewound into the package P by the rotation of the winding drum 7. As a method for predicting the weight of a package in an automatic winder in which a large number of winding units 1 are arranged in parallel, the package at the time when the total number of rotations from the start of winding of the drive drum 7 corresponding to a predetermined package weight during rewinding is obtained. Based on the total number of rotations, it is possible to predict the package weight when each winding unit 1 is fully wound.

  According to the above configuration, the package weight after completion of rewinding can be predicted in the middle of rewinding, so that the desired package P can be obtained in comparison with the case where the package weight is actually measured after completion of rewinding as in the prior art. Since correction such as addition of the rewind amount until it is obtained can be completed in a short time, productivity can be improved. Further, by reducing the variation in the weight of the package manufactured in the lot, the rewinding control can be performed so as to reduce the excess and deficiency with respect to the average value of the package weight in the lot. Specifically, in FIG. 5, when one winder machine base (for example, 60 spindles) rewinds a lot of A type, it can be controlled to reduce the difference with respect to the average value of 60 spindles. In the case of rewinding two types A and B with one winder machine stand, for example, No. 1-No. No. 30 is wound up with 30 winding units 1 and No. 31-No. When rewinding the B type with the 60 winding units 1, no. 1-No. In the winding unit 1 of 30, the average value of 30 spindles is used. 31-No. In the 60 winding units 1, by using the average value of the 30 spindles, the rewinding control can be performed so as to reduce the excess and deficiency for each average value.

  Further, in this embodiment, as shown in FIGS. 1 to 3, a winding for performing a rewinding process in which the yarn of the yarn supply package B (yarn supply bobbin) is rewound to form the package P by the rotation of the winding drum 7. As a manufacturing method of a package in an automatic winder in which a number of take-up units 1 are arranged in parallel, the total number of rotations of the package at the time when the total number of rotations from the start of winding of the winding drum corresponding to a predetermined package weight during winding is obtained. Based on the total number of rotations of the package, the package P can be produced by a manufacturing method in which the amount of rewinding is corrected so as to reduce the variation in the package weight between the winding units at full winding. ing.

  Thereby, the variation in the package weight in the some package P produced in parallel can be reduced. As a result, the package weight can be prevented from becoming excessive or insufficient. Moreover, since the amount of rewinding is corrected during the rewinding, productivity can be improved.

  In this embodiment, the following configuration is disclosed as an embodiment of a yarn winding machine that enables the weight prediction method for the package P described above. That is, the yarn winding machine includes a plurality of winding units 1 that perform a winding process of winding the yarn Y back to the bobbin Bf by rotation of the drive drum 7 to form the package P, and the winding process of these winding units 1. A machine base control device 4 that can be controlled and managed in group units. The machine base control device 4 rotates the package at the time when the total number of drum rotations of the drive drum 7 corresponding to a predetermined package weight during rewinding is reached. Package rotation total number acquisition means (S11 and S12 in FIG. 2) for acquiring the total number for all winding units 1 in the group, and variation for obtaining variation in package weight among the winding units 1 in the group based on the total number of package rotations. It has a configuration having grasping means (S14 in FIG. 2).

  In addition, the present embodiment discloses the following configuration as one form of a yarn winding machine that makes it possible to realize the manufacturing method of the package P described above. In other words, in addition to the above-described configuration, the yarn winder is provided in each winding unit 1 based on the variation in the package weight grasped by the variation grasping means so as to reduce the variation in the package weight after the completion of the rewinding. On the other hand, it is configured to have a rewinding amount correcting means (S16 in FIG. 2) for correcting the rewinding amount.

  Further, the yarn winding machine of the present embodiment has a variation display means for directly and / or indirectly displaying the total number of package rotations of each winding unit in the group (package rotation total number graph window in FIG. 11) (FIG. 11). 2 S18). As a result, the degree of variation in the total number of package rotations of each winding unit 1 can be easily understood by the operator, and thus the above-described estimation of the package weight at the time of full winding can be facilitated. In this embodiment, as shown in FIG. 11, the total number of rotations of the package is displayed in a graph so that the variation can be visually recognized by the operator. However, the present invention is not limited to this. The variation in the total number of rotations may be digitized and a value obtained by predicting the package weight at full winding may be displayed.

  Furthermore, the yarn winding machine according to the present embodiment identifies an abnormality notification means for identifying and informing an operator of a winding unit 1 that is out of a predetermined value or more from the average value of the total number of package rotations of all winding units 1 in the group. The configuration has 19) in FIG. As a result, the winding unit 1 performing abnormal rewinding can be found at an early stage, so that the subsequent measures can be taken with a margin.

  Note that the program comprising each routine in this embodiment may be written in advance in the ROM of the storage unit for read-only purposes, or what is recorded on a recording medium such as a CD is read out when necessary and stored in the storage unit. It may be written, or may be transmitted via a telecommunication line such as the Internet and written to the storage unit.

  Applicable to applications that produce packages with large errors in package weight when fully wound by making it possible to predict the package weight after completion of rewinding in each rewinding process based on the total number of package rotations during rewinding it can.

It is a block diagram of a yarn winding machine. It is a flowchart of a machine control side correction process routine. It is a flowchart of a winding unit operation routine. It is a schematic block diagram of a winding unit. It is a front view of a yarn winder. It is explanatory drawing of a correction value setting base table. It is explanatory drawing of a correction | amendment calculation table. It is explanatory drawing of a correction | amendment execution table. It is explanatory drawing of an automatic correction | amendment ON / OFF setting screen. It is explanatory drawing of a correction content setting screen. It is explanatory drawing of a package rotation total number graph window.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Winding unit 2 Unwinding auxiliary device 3 Tension applying device 4 Machine control device 5 Yarn splicing device 6 Slab catcher 7 Drive drum 41 Motor 42 Drum rotation control device 43 Drum rotation speed measurement sensor 44 Shaft member 45 Package rotation speed measurement Sensor 50 Unit controller 51 Winding unit body 52 Communication unit 53 Drum rotation total number default value storage unit 54 Correction value storage unit 55 Drum rotation total number final value storage unit 56 Package rotation total number output unit 57 Package rotation total number counting unit 58 Input / output 59 First drum rotation total number comparison unit 60 Second drum rotation total number comparison unit 61 Drum rotation total number counting unit 62 Stop unit

Claims (8)

A method for predicting the weight of a package in an automatic winder in which a number of winding units that perform a rewinding process for rewinding a yarn of a yarn supplying bobbin by rotating a winding drum to form a package,
Obtained for a plurality of winding units, based on the package rotation total number at the time when a rotational total number from the winding start of the winding drum corresponding to a predetermined package weight of middle rewinding, when fully wound in each winding unit A package weight predicting method characterized by predicting the package weight of each. A method of manufacturing a package in an automatic winder in which a number of winding units that perform a rewinding process to rewind a yarn of a yarn feeding bobbin by rotating a winding drum to form a package,
Obtain the total number of package rotations for all winding units at the time when the total number of rotations from the beginning of winding of the winding drum corresponding to the predetermined package weight during rewinding,
A package manufacturing method comprising correcting a winding amount so as to reduce variation in package weight between winding units when fully wound based on the total number of package rotations.   The package manufacturing method according to claim 2, wherein the amount of rewinding is corrected based on a standard deviation of the total number of package rotations during rewinding. A plurality of winding units that perform a rewinding process to rewind the yarn of the yarn feeding bobbin by rotating the winding drum to form a package, and a machine base control that can control and manage the rewinding process of these winding units in groups. Having a device,
The machine control device is
A package rotation total number acquisition means for acquiring the total number of package rotations for all winding units in the group when the total number of rotations from the winding start of the winding drum corresponding to a predetermined package weight in the middle of rewinding;
A yarn winding machine comprising: variation grasping means for obtaining a variation in package weight between winding units in the group based on the total number of package rotations.   The yarn winding machine according to claim 4, wherein the variation grasping means obtains variation based on a standard deviation of the total number of package rotations. The machine control device is
In order to reduce the variation in the package weight after the completion of the rewinding, it has a rewinding amount correcting means for correcting the rewinding amount for each winding unit based on the variation in the package weight grasped by the variation grasping means. The yarn winder according to claim 4. The machine control device is
The yarn winding device according to any one of claims 4 to 6 , further comprising variation display means for directly and / or indirectly displaying a total number of package rotations of each winding unit in the group. Machine. The machine control device is
8. The yarn according to claim 7 , further comprising an abnormality notification unit that identifies a winding unit that deviates a predetermined value or more from an average value of the total number of package rotations of all winding units in the group and notifies the operator of the winding unit. Winder.

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