JP2016176174A - Method, device and computer program for allocating amount of air suction to work stations demanding air suction in textile machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for allocating air suction provided by an air suction system of a textile machine to work stations demanding air suction.SOLUTION: The present invention relates to a method in which air suction demands predicted to exceed the maximum capacity of an air suction system 20 are set in a waiting line, and in which allocation is made to the air suction demands held on standby in the waiting line only when it is not predicted that the allocation to the air suction demands causes the maximum capacity of the air suction system 20 to be exceeded. In the method, the air suction demands include information about the scheduled transition of the required amount of air suction for the air suction demands. A determination whether or not it is predicted that the allocation to air suction demands SD causes the maximum capacity of the air suction system 20 to be exceeded takes into account the scheduled transition of the required amount of air suction for the air suction demands and the scheduled transition of the required amount of air suction for the air suction demands to which the allocation has been already made at the time of the determination.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method of allocating the amount of air suction procured by an intake system of a textile machine to a working unit that requires air suction (intake) of the textile machine. The invention also relates to an apparatus, a controller and a computer program for performing at least a part of the method.

  For example, textile machines, such as automatic winders and spinning machines, consist of a number of similar working parts, which in particular require at least temporary air suction due to their own working mechanism. This air intake is usually procured by one or more intake systems of the textile machine. In the following, for the sake of simplicity, it will always be described as having only one intake system, but this does not limit the generalization.

  For example, automatic winders typically include, for example, a thread catch cleaning nozzle. Such a nozzle serves to clean loose particles during the winding process, and fulfills a safety function of catching the lower thread when the yarn breaks to some extent. Accordingly, at least during normal winding operation, air suction is continuously supplied to the yarn catching cleaning nozzle. Further, for example, air suction is continuously supplied to a rotor cup of an open-end spinning machine during a normal spinning operation and also during a yarn splicing process. However, this working unit also does not require air suction while the working unit is stopped because there is a failure that can be solved only by operator intervention, for example.

  On the other hand, since the other working parts of the working part operate only occasionally and for a relatively short time, it is only at that time that air suction is required. For example, a winder or spinning machine suction nozzle is only required to receive the top yarn from the take-up package during yarn breakage or replacement of the supply medium (bobbin or spinning can change) or take-up package change.

  What is important for the quality of the product produced by the textile machine, for example the quality of the winding package and the yarn wound on the winding package, is that the working part has sufficient suction pressure each time it is needed. That is, the negative pressure generated in the working unit when necessary is within a predetermined range. Furthermore, machine productivity is maximized when the required air suction is supplied as soon as possible when there is a demand for air suction. This is because in such a case, if there is no immediate supply of air suction, the working unit must spend non-productive waiting time. In addition, if the intake system is designed for the maximum possible air intake, the cost of the intake system increases beyond a reasonable range. In addition, preparing an air suction strength that exceeds the level that is actually required as appropriate also causes an increase in energy consumption, thereby increasing the maintenance cost of the machine.

  Therefore, in the prior art, at least in extreme situations, accept some waiting time until air intake is obtained, and control the air intake intensity of the intake system to match the required air intake amount as accurately as possible. Doing is well established. However, since the air suction flow path in the textile machine is particularly long, the control of the air suction strength is relatively slow. Therefore, in the case of pure tracking control, the required air suction strength is often not satisfied.

  Therefore, for example, in German Patent Application Publication No. 1951960, the working unit notifies in advance of its required air suction, that is, sends out an air suction request, and in response to this air suction request, Even after distribution, that is, after air suction has been released in response to the request, the air suction strength controller controls the air suction so that sufficient suction strength can be maintained for all connected work units. It has been proposed to sufficiently increase the air intake in a timely manner before the request. To do this, in practice, the number of revolutions of the suction assembly determined by the inverter is increased correspondingly, thereby increasing the current consumption of the suction assembly. When the maximum permissible current consumption is reached, it is no longer allocated to other air suction requests, and the requesting working unit shifts to a standby state. The waiting working unit is not resumed until the current consumption of the suction assembly is sufficiently reduced by processing the previous air suction request.

  German Patent Application No. 102006050220 improves the solution of the above-mentioned German Patent Application No. 1951960 in terms of priority controlled queues. Air intake requests that are critical to productivity are given higher priority than non-important ones, and work units waiting in line for waiting for air intake are given priority first. The air suction is distributed according to the degree and secondly, for example, according to the request arrival order of the working unit. In this way, in particular, it is possible to shorten the standby time of a small resource, for example, the standby time of a service unit or an operator in charge of a plurality of working units.

  In order to do this, German Patent Application No. 102006050220 manages the air suction request of each working unit at the working unit level. Specifically, this publication defines the maximum number of working units that can perform air suction distribution. When this maximum is reached, the air intake requests of other working units are queued. The waiting working unit will either wait until one of the currently receiving working units has finished its own work using the requested air suction, i.e. the working unit has its own prior air suction. Until the end of the request is notified, the air intake amount cannot be distributed.

German Patent Application Publication No. 1951960 German Patent Application No. 102006050220

  Against the background of the above, the object of the present invention is a more efficient distribution of the air suction procured by the textile machine intake system to the working part of the textile machine that requires air suction, It is to realize a distribution capable of simultaneously supplying air suction to a larger number of working parts, preferably to a larger number of working parts.

The problem is a method of allocating the amount of air suction procured by an intake system of the textile machine to a working unit that requires air suction of the textile machine, and the distribution may exceed the maximum capacity of the intake system. The predicted air intake request is queued, and for the air intake request waiting in the queue, it is no longer expected to exceed the maximum capacity of the intake system due to the allocation for the air intake request. If this is the case, it is solved for the first time by a method characterized by the following:
The air suction request includes information on the planned transition of the required air suction for the air suction request,
・ Determining whether the allocation to the air intake request is predicted to exceed the maximum capacity of the intake system is based on the planned transition of the required air intake of the air intake request and the allocation at the time of the determination. Considering the planned change in required air intake for the air intake request received.

The subject is an apparatus for carrying out the method,
It is also solved by an apparatus comprising one or more controllers configured to generate or receive an air suction request for the working part of the textile machine and further process by the method.

  Therefore, in solving the above-mentioned problems, in particular, the controllers listed above that are program-controlled controllers, and that can be configured as controllers well-known in the prior art, contribute in particular. In this case, the present invention is a computer program for controlling the controller.

  Therefore, all the above-described solving means and the constituent requirements of the solving means belong to the scope of the claims of the present application.

1 is a schematic front view of a textile machine to which the method of the present invention can be applied, in which the textile machine is an open-end spinning machine. FIG. 2 is a perspective view of a working unit of the open-end spinning machine of FIG. 1, specifically, a spinning unit. It is the schematic which shows the structure of three CAN messages corresponding to an air suction request | requirement and air suction update. It is a figure which shows the possible order of an air suction request | requirement, its allocation, or rejection, and the state of the queue of each period.

  The inventor of the present application does not matter how many working units have received the distribution of the air intake at the present time in determining whether the air intake request can still be handled within the maximum capacity of the intake system. Got the recognition. This is because the required air suction of one working unit varies greatly depending on which process the working unit is currently processing. In this regard, however, it must be taken into account that the required air intake changes constantly during a one-step process and can be increased. Thus, the air suction distribution must ensure that sufficient air suction is available to allow the process to be fully processed throughout the process. Otherwise, one process must be interrupted halfway due to lack of air suction, and then all of the process must be repeated, which would be a delay and duplication.

  For example, in the case of an open-end spinning machine, for example, the splicing process after the yarn breakage is one step. In order to perform such a process, first, the suction nozzle searches for the upper yarn of the winding package, and is drawn into the drawing tube protruding into the spinning rotor and the drawing roller of the yarn drawing device located above the drawing tube. There must be. After that, the suction nozzle is not necessary, but a storage nozzle is necessary. This is to compensate for the speed difference that occurs during the initial rotation rise between the drawing roller and the winding package, which are initially relatively fast, by sucking excess yarn in the yarn hose. At the end of the rotation rise, the speed of the draw roller and the speed of the winding package are balanced by the storage nozzle, and the yarn hose is pulled back from the storage nozzle by the winding package, during which the rotational speed is increased, thereby The storage nozzle no longer requires air suction and the splicing process ends.

  In other words, the present invention is not limited to whether or not the working unit simply requests air suction by a digital request method, but the working unit's air suction request is a numerical value with respect to the planned transition of the required air suction of the working unit. It is to become. That is, it is predicted and planned how the required air suction develops during the process of the process requiring air suction. The information on the planned transition of the required air suction can be composed of, for example, only the display value of the maximum required air suction required during the process that must still be processed. In the case of the above-described yarn splicing process, for example, the suction nozzle requires an air suction amount that is about four times the air suction amount required by the storage nozzle. The required value after blocking the suction nozzle is reduced to about ¼.

  In that case, the entity that decides the allocation for the air intake request is whether the intake system can respond to the air intake request within the maximum capacity of the intake system at the same time as the air intake request already received. In order to determine whether or not, information on the required air suction is used. If the information about the planned transition of the required air suction consists only of the maximum required value in the plan, such a determination may be made, for example, by determining the maximum required value of a new air suction request to the already-corresponding air suction request. Is added to the sum of the maximum required values, and only when the sum is still within the maximum capacity of the intake system, it is distributed to the air intake request.

  However, more highly quantified information about the required suction value also belongs to the claims of the present invention. For example, displaying such information in more detail than the required air intake over the process time, i.e. how much time has passed since the distribution at the time of the first air intake request, It is also possible to specify specifically when to end the process. By such detailed prediction of required values, the subject that decides the distribution can plan very finely for which air suction requests can be distributed in parallel within the maximum capacity of the intake system. In this way, in particular, the subject can take into account, in addition to the priority of air suction requests and the order of arrival, what distribution order can lead to the overall maximum productivity of the textile machine.

  Information about the planned transition of the required air suction for the air suction request can be encoded in an appropriate manner in the air suction request. For example, the planned transition of required air suction for each process can be stored in one or more central memories that can be accessed by the air suction distribution entity, or can be stored in multiple distributed memories. It is. In that case, it is sufficient to identify the requested process by, for example, a short code in the air suction request, so that the distribution entity responds to the planned transition of the required air suction of the process. Call from memory.

  In addition, as a special case, in order to indicate the transition of the required air suction in the plan, it is also possible to notify the present invention only of the required air suction of the work section that starts work for the first time during the process step processing. Belongs. When the required air suction generated in the progress of the process of the working unit is the maximum, that is, when the required air suction of the working unit is the maximum required air suction of the process in the initial stage, the above notification has already been made. This is consistent with the maximum required value specified in. Otherwise, in the above-described embodiments of the present invention, the increase in required air intake during the process can exceed the maximum capacity of the intake system, which can occur when an unplanned event occurs. For this, see the description below. However, such excess can be tolerated depending on the application, especially if the excess is slight or short, and this is within the scope of the claims of the present invention.

  From the above-described operation mode, the distribution to the air suction request is not limited to the predetermined number of work units that receive the distribution at the same time, and changes depending on the required air suction that causes a difference in the work process being performed. It is clear to get. Specifically, for example, when two piecing processes to be allocated have already entered the stage where only the storage nozzle is being implemented, the required air suction of the two piecing processes is combined and the piecing This is only half of the required air suction required by the working unit to operate the suction nozzle of the working unit that has just started. Therefore, the distribution subject weights the work parts of these two previous splicing processes to 1/2 the weight of the work part that has just started splicing, and is thus regarded as an unallocated state. For example, 3/2 can be used for distribution to the air suction request of the working unit that is going to start the splicing. As a result, the number of working parts involved in the work process to which air suction is supplied at the same time is increased from the number possible in the prior art, and in the case of a yarn splicing process, air suction is simultaneously supplied. The object of the present invention, that is, increasing the number of working parts during piecing can be achieved.

  Here and in the following, for the sake of simplicity, it will always be mentioned that one air suction requirement for one working part of the textile machine has been explained or explained. This way of explanation is based on the consideration that a current normal textile machine has one working unit controller that cooperatively controls a plurality of working units of one working unit. Thus, all control processes related to air suction associated with one such work unit are typically performed using the one work unit controller.

  However, for those skilled in the art, the present invention addresses the allocation of a plurality of air suction requests each triggered by a series of work steps, for example, a plurality of air suction requests triggered by the splicing process described above. It is clear that this is an allocation. Therefore, finally, it is intended to generate an air suction request corresponding to such a process and determine the distribution to the air suction request. To achieve this, which entity controls such a process, which entity generates the air suction request for that process, then which entity receives that request and further processes it until allocation, and which There are various means that those skilled in the art can adopt as to which main body finally processes the process itself, and when the required air suction changes, which main body further notifies the change. Therefore, in the case of textile machines that are currently popular, the present invention is not limited to this even if the working unit controller and the central controller of the textile machine are suitable choices as the above-mentioned main body.

  The determination of whether or not it is possible to further respond to an air suction request that has not yet been allocated depends on the amount of air suction that the air suction request that has already been allocated further requires. It is advantageous to keep track of the latest information on the entire air intake request received. This is because, during the process of one working unit that requires air suction, the required air suction usually changes as the process proceeds. Thus, in the case of the splicing process listed above, the required air suction is reduced to about ¼ of the required amount at the time of transition from the suction nozzle operation to the storage nozzle operation.

  Therefore, the required air suction change as described above can already occur in the planned transition of the required air suction. If the required value information given in the air suction request is sufficiently detailed, the required value information can be taken into consideration not only in the distribution subject but also in the entire process processing time. However, if the required value information includes only the maximum required value, it is preferable to notify the distribution entity of any reduction in the maximum required value planned for the remainder of the process. This is more true for unplanned events. This is because such an event cannot be predicted even if the information about the planned transition of the required air suction is more detailed as described above.

  Therefore, in one development of the present invention, the change in the planned transition of the required air suction that occurred in the requesting work section during processing of the air suction request that receives the distribution is updated for the air suction request. use. The air suction request updated in this way then becomes the basis for further determination as to whether it can be allocated to the new air suction request. Thus, for example, a working unit controller that controls processing of a process that receives a supply of air suction, for example, occurred in an error situation, whether planned or unplanned. Regardless of this, each end of each partial operation is monitored, and all other required air suction changes caused in the future by each end of each partial operation are notified to the distribution subject. In a very simple case, this is done, for example, by notification of a changed maximum required air intake required for further processing.

  In the case of detailed requirement information in the example of the splicing process, for example, the upper thread could not be received from the winding package within the planned time, so another attempt to receive it must be made. When strong air suction is required, the above-described update is necessary. This is because if the update is not used, the distribution subject determines that the suction nozzle is no longer operating and the storage nozzle has started to operate, and the required air suction is ¼ of the original air suction. It is because it will be judged that it became only. Thus, the maximum capacity of the intake system may be exceeded when allocating for other air intake requirements. The above-mentioned erroneous determination can be avoided by updating the air suction request of the working unit during yarn splicing in a timely manner when the required air suction continues to be high.

  In order to make it possible to compare the required air intake required for air intake and the free capacity of the intake system as easily as possible with each other, in a particular embodiment of the invention, the required air intake and the maximum capacity of the intake system. Is proposed to be expressed in units of volume flow rate. This volume flow unit (abbreviated as “VSE”) is a dimensionless value in which a numerical value is selected to a size advantageous for practical handling. In the example of a splicing process, the suction nozzle requires for example 80 VSE, whereas the storage nozzle only requires 20 VSE. A specific particular type of textile machine intake system may exhibit a performance of, for example, 600 VSE or 1200 VSE as a maximum capacity, depending on the expansion level.

  One special situation of the method of the present invention occurs when the required air intake of an air intake request that has already been allocated exceeds the planned transition of the required air intake due to an unplanned event. In the case of detailed required air suction information, the matter is as described above, and the distribution subject predicts that 60 VSE will be abandoned, and this 60 VSE is already expected to be another air suction request. In spite of having been applied to the case, when the attempt to receive the upper thread of the winding package is repeated, for example, a relatively high required air intake of 80 VSE exists for a longer time than planned. It is. However, this situation can also occur in the case of information only about the planned maximum required value. For example, during the yarn splicing process, the yarn may break again during the rise of rotation, or the splicing of the yarn that has entered the drawer tube to the yarn ring in the rotor cup has already failed. In either of these cases, the suction nozzle must be restarted, and such an unplanned event again increases the required air suction for the splicing process from 20 VSE to 80 VSE. In order to eliminate this situation, the present invention proposes two embodiments.

  One is that the distribution to the air intake request can be continued in any case, even if the maximum capacity of the intake system is exceeded. This is because such excesses are usually relatively short and relatively small, and the reduced air intake strength in the intake system has only a minor effect on the quality of the product produced by the textile machine. is there. On the other hand, continuing a process once started will typically also have a positive impact on the productivity of the textile machine. This is because resuming one process usually causes a significant delay, and in some cases it is necessary to repeat a partial process that has already been completed otherwise.

  However, in many textile machines, the above-described method can cause unacceptable quality degradation. Therefore, in another embodiment of the present invention that replaces the above-described aspect, when the planned transition of the required air suction of the air suction request that has already been allocated is exceeded due to an unplanned event In this case, it is proposed to withdraw the distribution if the maximum capacity of the intake system is exceeded unless the distribution is withdrawn. In other words, if the work process is continued with a higher required air intake than planned, the maximum capacity of the intake system will be exceeded. The work process must resend the air suction request to the distributor.

  However, in addition to the above-described embodiments, other alternative embodiments may be employed in the specific case where the productivity of the textile machine is increased. For example, for many work processes that have already been allocated, air intake into such work processes is necessary to ensure sufficient free space in response to an increase in required air intake for work processes that have been subject to unplanned interference. The supply can be appropriately reduced without problems, or depending on the circumstances, the air suction supply can be completely prohibited for a certain period of time. After the undesired increased required value has been processed, the entire reduced air suction request described above can be resumed. One example of the temporary prohibition mentioned above is at the start of the splicing process when the suction nozzle is still near the winding package. In such a case, the air suction can be stopped completely, and the yarn end portion remains in the winding package while the suction nozzle is not operating and waiting for the air suction at the receiving position of the suction nozzle. When the air suction supply resumes, the above receiving process is resumed without any further time loss. This is because the suction nozzle remains in the yarn receiving position. Another stop point that can be used during the splicing process is the stop point at which the air suction supply can be interrupted without losing further time at the end of the air suction supply of the suction nozzle and the air suction supply to the storage nozzle. Between the start of This is because here the yarn is securely held by the drawing roller and the drawing tube.

  As can already be seen from the above description, the present invention can be used in combination with the first priority-controlled queue of DE102006050220A1 mentioned at the beginning. Specifically, when the air suction capacity is abandoned, among the air suction requests that have not yet been allocated, when deciding which air suction request will correspond next, the priority of the air suction request is also included. In particular, the priority can be used as the first decision criterion. That is, for example, in a queue, it can be initially allocated to the air intake request of the highest priority class, and if it cannot be allocated to all the air intake requests of this class, the air intake request of the class Second, the air suction request is distributed in the order of arrival.

  As already mentioned, it is advantageous to leave the generation of the air suction request to the working unit controller, which also sends the air suction request to the central controller of the textile machine, The controller can implement the present invention on currently widely used textile machines by performing subsequent processing up to distribution. To this end, the present invention preferably proposes that the present invention be implemented with a suitable computer program for the controller described above, taking advantage of the fact that such a controller is programmable.

  However, instead of using a central controller, it is also within the scope of the present invention, for example, to be realized with a purely distributed control network. Therefore, it is basically a plurality of work unit controllers that notify each other about their required air suction, and are unified for each process of the method of the present invention in which the preparation for distribution is completed for the air suction request. It is sufficient to use a working controller. However, such a working unit controller itself is not essential, and an information processing unit can be directly provided in each working unit in an extreme case. In addition, due to the connection before and after in one process, it is also meaningful to gather to some extent, and because of the allocation of central resources for air suction, certain degree of concentration is also meaningful. Here, in the case of a relatively large textile machine, when a plurality of intake systems are used, these central information processing units can be provided for each intake system and can be combined together with the controller.

  All of the embodiments described above and the modifications and combinations that a person skilled in the art can derive from the embodiments belong to the scope of the claims of the present invention. Of the examples shown in the drawings and such modifications, The present invention is described in detail with reference to some aspects.

  The same components are denoted by the same reference symbols throughout the drawings.

  FIGS. 1 and 2 of the present application are basically taken over from DE102006050220A1, and the figure numbers are also 1 and 2 in this document. FIG. 1 of the present application is a schematic front view of the entire spinning machine, specifically, the entire open-end spinning machine, and FIG. 2 of the present application is one of the working units, that is, one spinning unit. It is a perspective view. For example, the present invention embodied by a computer program can be used in a working unit controller or a central controller of the spinning machine.

  The open-end spinning machine and its working unit are well known in the prior art, and details of the operation method can also be read from DE102006050220A1, so the description of FIG. 1 and FIG. Further, only the difference from DE102006050220A1 will be described.

  The open end rotor spinning machine 5 shown in FIG. 1 includes a plurality of working units 1, end frames 31 and 32, a service unit configured as a cleaner replacement carriage 7, a central control unit 10, and a negative pressure source 30. And a CAN bus 28 for connecting a control device 25 (not shown in FIG. 1) of each working unit 1, and an electric drive device for the negative pressure source 30 29, more precisely, the inverter is controlled by the central control unit 10 via the control line 33.

FIG. 2 shows a spinning unit 1 which, in addition to some of the components already described in FIG.
Open-end spinning machine 2
Thread withdrawal pipe 21
Yarn splice 16
Thread break detector 26
Thread withdrawal device 27
Suction nozzle 4 that can be swung by a step motor 6
Thread 9
Storage nozzle 60 supplied with pneumatic force
Waxing (paraffin coating) device 17
Ayanaki Package 8
Winding device 3 provided with winding frame 22
Drive drum 23 driven via reversible single drive 56
Yarn traversing device 24 driven by step motor 57, and
A device 35 comprising aerodynamic connecting lines 11, 12 and 13 connected to the central intake system 20 via blocking means 14 and 15.
In the figure, the working unit controller 25 controls, in particular, the shut-off means 14 and 15 to transmit the air suction request SD to the central control unit 10 via the CAN bus 28 and via the lines 18 or 19. It is configured as follows.

  In order to increase the flexibility of the air suction supply, in this embodiment, the blocking means 15 is not provided in the connecting line 13 shared by the suction nozzle 4 and the storage nozzle 60, unlike the DE102006050220A1, but is stored in the storage nozzle 60. It is provided in a dedicated connection pipe 11. With this configuration, it is also possible to supply air by suction only to the suction nozzle 4 in a state where the storage nozzle 60 is disconnected from the central intake system 20 by the blocking means 15.

  FIG. 3 schematically shows the configuration of three CAN messages that the working unit controller 25 transmits to the central controller 10 via the CAN bus 28. The upper part of FIG. 3 shows the CAN message corresponding to the original air suction request before the start of one process, and the middle part and the lower part respectively show the air suction request after the change has occurred in the working part. Indicates an update. These telegrams first identify the requested working unit and identify the requested process within the working unit. After that, it is determined whether the request is an original request or an update, and the maximum required air intake amount is predicted in the course of the process, more specifically, the change in the required air intake amount with respect to the previous prediction result is specified. To do. The original request further indicates the priority of the original request. This is because in this embodiment, a queue whose priority is controlled is used.

  In the case of the request update message structure shown in the figure, the central controller 10 only needs to save the sum total of all the VSEs already assigned (and the waiting process). This is because each update directly indicates the amount of change in the required air suction amount, and in this embodiment, since the update is always distributed, the central controller 10 performs this every time. This is because the current state of the assigned VSE can always be grasped only by adjusting the stored VSE sum. In practice, this is a change in the total required air suction amount for the allocation of VSE (80 in this embodiment) to the original air suction request. Again, the central controller 10 only needs to add the 80 VSEs and settle the stored VSEs.

  Regarding this embodiment, it is particularly clear that the air suction distribution is not performed according to the number of working units 1 that are simultaneously supplied with air suction, unlike the prior art. This is because the central controller 10 does not know the number at all, and stores only the sum total of VSE given at the same time. Therefore, in the embodiment of FIG. 3 based on the yarn splicing process, the central controller 10 never knows that the process has been completed in the working unit 1 at the end of the process. This is because the central controller 10 only settles the VSE total, and does not settle the VSE partial sum at the process level or the working unit level. This is because it does not know that the VSE becomes 0, that is, the yarn splicing process does not wait for the required air suction amount, and therefore it can be considered that the air suction application has been completed.

  Certainly, the central controller 10 must be notified of the working unit ID and the process ID. This is because the central controller 10 requires the above-mentioned ID in order to notify the air suction distribution by the response CAN message when the air suction distribution is performed, and when the air suction is rejected, the air suction request is queued. This is because the above-mentioned ID is required to enter. However, the required required air intake amount is stored only in the latter case, that is, in the case of distribution refusal. In this case as well, only the originally notified required air intake amount is the 80 VSE air intake request here. However, the central controller 10 does not pay for the required air intake at the working and process levels.

  Finally, depending on the embodiment of the present invention, the CAN telegram can be simplified by further omitting the process ID. Such simplification is, for example, when the working unit 1 is essentially always one step at a time, or when the first air suction distribution is not performed, the working unit 1 has its own. This can be performed when no further air suction request is issued for other processes. This is because in such a case, the work unit 1 can always clearly know which of the processes of the work unit 1 is still waiting for the distribution of air suction, and the central controller 10 waits. This is because air suction requests that are not yet ready for distribution can be managed by simply using the work station ID of the queue.

  FIG. 4 shows an example of a possible order of the air suction request in order to explain the air suction distribution method, together with the working units receiving the response and the state of each point in the queue. . For an open-end spinning machine with an intake system with a maximum VSE of 600, start from the initial situation where the allocated VSE is 540 at time 1 of the first row. Among these VSEs, 2 × 100 VSE is allocated to the cleaner exchanging cart RWW having a high priority, and 4 × 80 VSE is allocated to the suction nozzle SD having a low priority in the automatic yarn splicing process. 1 × 20 VSE is allocated to storage nozzles with low priority. At time point 1, the queue is still empty.

  In the second row, a high-priority third cleaner exchange truck RWW with an air suction request of 100 VSE is added. However, since the maximum capacity of 600 VSE is exceeded when the air suction request of the third cleaner exchange cart RWW is handled, this is queued without responding to the air suction request. Thereafter, in line 3, since the operator manually spliced the yarn, the request for suction nozzle 80VSE, which has a high priority, arrived later, so the request must be queued as well.

  However, at time 4, the storage nozzle finishes its work and gives up its 20VSE. This abandoned VSE is used to give an unassigned VSE totaling 80 for the high-priority manual suction nozzle request in line 3 that is waiting. Therefore, here, in the same priority class, instead of strictly following the arrival time of the air intake request, firstly, an assignment methodology is used that tries to make the best use of the capacity of the intake system as much as possible. Otherwise, the request for the third cleaner exchange truck RWW in the second row that has already arrived early at time 2 will exceed the maximum capacity of 600 VSE (540−20 + 100 = 620). > 600) Although the request for the third cleaner exchange truck RWW has already arrived at an early time point of time point 2 even though it cannot be allocated at all, the request to the manual suction nozzle request SD at time point 3 is reached. This is because the response is hindered.

  The subsequent flow from time 5 to 7 also follows the above pattern. The italic font shows yet another grant methodology in the 8th and 9th lines. This is because at least the air intake request with the earlier arrival time but lower priority takes precedence over the higher priority air intake request only if it cannot be allocated to the high priority air intake request itself within the maximum capacity of the intake system. It is to let you. However, many other alternatives can be added by those skilled in the art. Each such alternative embodiment has its own advantages and disadvantages.

  Although the air suction distribution of the present invention has been described above with reference to only specific embodiments, those skilled in the art can freely combine most of the embodiments with each other or use them alone. Obviously, this is possible, and it is clear that other variations are possible. The same is true for the open-end spinning machine splicing process and cleaner replacement cart operation, which is given here as an example only. Therefore, the air suction distribution of the present invention is also applied to a winder joining process in which, for example, the suction nozzle, the gripping pipe, the yarn opening pipe, the joining path, and the yarn catching cleaning nozzle require different required air suction amounts at different times. Can be applied as well.

  Further, it should be noted for complete understanding that the indefinite article does not exclude the possibility that there may be a plurality of components described with the indefinite article. In addition, the description of a specific component does not necessarily mean that the function of the specific component cannot be distributed to a plurality of other alternative components, and is described here. It does not mean that the functions of a plurality of components cannot be combined into one component.

Claims (10)

A method of allocating the amount of air suction procured by the intake system (20) of the textile machine (5) to the working unit (1) of the textile machine (5) that requires air suction,
Queue an air intake request (SD) that, when allocated, is expected to exceed the maximum capacity of the intake system (20),
The air intake request (SD) waiting in the queue is allocated only when the allocation to the air intake request is no longer expected to exceed the maximum capacity of the intake system (20). In the method
The air suction request (SD) includes information on the planned transition of the required air suction amount of the air suction request (SD),
The determination as to whether or not the maximum capacity of the intake system (20) is predicted to be exceeded due to the distribution to the air intake request (SD) is based on the plan of the required air intake amount of the air intake request (SD). A method that considers the transition and the planned transition of the required air suction amount of the air suction request (SD) that has already been distributed at the time of the determination. The change in the planned transition of the required air suction amount that occurred in the working unit (1) making the air suction request (SD) during the processing of the air suction request (SD) to be distributed Used for request (SD) update,
Thereafter, the updated air suction request (SD) is used as a basis for further determination of whether or not it can be allocated to a new air suction request (SD).
The method of claim 1. The required air intake amount of the air intake request (SD) and the maximum capacity of the intake system (20) are expressed in volume flow units (VSE).
The method according to claim 1 or 2. If the required air intake amount of the air intake request (SD) being allocated exceeds the planned transition of the air intake request (SD) due to an unplanned event, the air intake request (SD) Even if the distribution exceeds the maximum capacity of the intake system, the distribution for the air intake request (SD) is maintained.
The method according to claim 1 or 2. When the required air suction amount of the air suction request (SD) being allocated exceeds the planned transition of the air suction request (SD) due to an unplanned event, the air suction request (SD) If the maximum capacity of the intake system is exceeded unless the allocation for is withdrawn, the allocation for the air intake request (SD) is withdrawn.
The method according to claim 1 or 2. A priority is assigned to at least the air intake request (SD) in the queue;
First, in order of priority of the air suction request (SD) waiting in the queue, the air suction request (SD) is handled.
The method according to claim 1 or 2. In an apparatus (10, 25) for carrying out the method according to claim 1,
One or more controllers (10, 25) configured to generate or receive an air suction request (SD) of the working part (1) of the textile machine (5) and to be further processed according to claim 1. ). Each controller (25) provided for each working part (1) of the textile machine (5) is configured to generate an air suction request (SD) for each working part (1). And
The central controller (10) of the textile machine (5) is configured to receive the air suction request (SD) of the entire textile machine (5) and process it further according to claim 1;
Device (10, 25) according to claim 7. Controller (10, 25) for a device according to claim 7,
The controller (10, 25) is configured to generate or receive an air suction request (SD) for the working part (1) of the textile machine (5) and to process it further according to claim 1. A controller (10, 25) characterized by Computer program for a controller (10, 25) according to claim 9, which is program-controlled.
When the computer program is executed on the controller (10, 25), the controller (10, 25) is in operation and sends an air suction request (SD) of the working unit (1) of the textile machine (5). A computer program that is generated or received and further processed according to claim 1.