JP2007107146A - Method and apparatus for controlling operation of spinning machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To propose a method for controlling operation in order to prevent yarn clogging in a spinning part when a spinning machine is restarted. <P>SOLUTION: The method for controlling the operation of the spinning machine 100 in Fig. 1 comprises spinning each sliver S fed from a drafting apparatus 3 of a spinning unit 1 in the spinning part 4. When the spinning machine 100 is restarted, a blower motor 34a (suction blower 34) for producing suction force in suction ducts 30, 31 and 32 opened to the spinning unit 1 is operated. A drafting motor 22 for rotating and driving drafting rollers 10, 11, 12 and 13 of the drafting apparatus 3 is then operated. The drafting rollers 10, 11, 12 and 13 are thereby rotated and driven in such a state that the suction ducts 30, 31 and 32 are subjected to air suction as in figure 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an operation control method and apparatus for a spinning machine, and more particularly to a method and apparatus for controlling the operation of a draft roller driving means of a spinning unit and an air suction means of a suction duct provided in a machine base body. .

  A spinning machine that drafts a fiber bundle and spins a spun yarn usually has a plurality of spinning units arranged side by side in the longitudinal direction of the machine base, and is configured so that the fiber bundle is spun in each spinning unit. Yes. That is, in the spinning unit, the fiber bundle is first drafted by the draft roller of the draft device, and the fiber bundle discharged from the draft device is sucked by the air spinning nozzle of the spinning unit arranged on the downstream side of the yarn feeding path of the draft device. The spun yarn is spun from the downstream outlet of the spinning section.

  Here, as disclosed in, for example, Patent Document 1, a spinning machine provided with a suction duct that is open on the upstream side and / or downstream side of the spinning unit on the machine body side is known (patent). Reference 1). In such a spinning machine, suction force is generated in the suction duct by air suction means such as a suction blower, and fluff and dust generated from the fiber bundle and yarn are sucked into the suction duct from the opening.

In the conventional spinning machine, when the operation of a draft motor or a suction blower (blower motor) as a driving means of the draft roller is controlled, for example, when spinning is stopped when a yarn defect is detected by a slab catcher (Operation stop) is controlled so that only the rotational drive of the inner back roller (or third roller) of the draft roller is stopped without stopping the drive of the draft motor and blower motor.
Japanese Patent No. 2947368

  The spinning machine is controlled as described above when the operation is stopped, so that the fiber bundle fed into the draft device is torn off by the back roller (or third roller) and sent to the downstream side as yarn waste. It is sucked into the suction duct and does not remain in the draft device. For this reason, even if the operation stop is released and the spinning operation is resumed, the spun yarn can be continuously spun without causing yarn clogging at the spinning unit.

  However, when the spinning machine is suddenly stopped due to a power failure or the like, unlike the work stop state described above, the driving of the draft motor, blower motor, and the like is forcibly stopped. Therefore, the fiber bundle remains in the drafting device or the air spinning nozzle of the spinning unit. In such a state, when the spinning machine is restarted, the fiber bundle may be clogged with yarn on the upstream side and the downstream side of the spinning unit, and the spun yarn may not be spun continuously. So far, no technique has been proposed as an operation control method for restarting the spinning machine to solve such a problem specific to the structure of the spinning machine.

  Accordingly, the present invention relates to an operation control method for a spinning machine, which solves the above-described conventional problems, and an operation control method for preventing a yarn jam from occurring in the spinning unit when the spinning machine is restarted. The purpose is to propose.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, according to claim 1, in the spinning machine operation control method for spinning the fiber bundle fed from the spinning unit draft device at the spinning unit, when the spinning machine is restarted, the spinning unit After actuating the air suction means for generating suction force in the suction duct opened toward the suction duct, the draft roller driving means for rotating the draft roller of the draft device is actuated so that the suction duct is in the state of air suction. The draft roller is rotationally driven.

  In Claim 2, it is the operation control method of the spinning machine which spins the fiber bundle sent from the draft device of the spinning unit at the spinning unit, and when the spinning machine is restarted, the spinning unit is directed toward the spinning unit. After operating the air suction means for generating suction force in the opened suction duct and / or the air supply means for supplying air to the spinning section, the draft roller driving means for rotating the draft roller of the draft device is operated. The draft roller is rotated in a state where the suction duct is sucked with air and / or air is supplied to the spinning unit.

  According to a third aspect of the present invention, there is provided an operation control device for a spinning machine for spinning a fiber bundle fed from a drafting device of a spinning unit at a spinning unit, wherein a suction force is applied to a suction duct opened toward the spinning unit. A signal for restarting the spinning machine, comprising air suction means to be generated, air supply means for supplying air to the spinning section of the spinning unit, and draft roller driving means for rotationally driving the draft roller of the draft device Is input, after the air suction means and / or the air supply means are operated, the draft roller driving means is operated, and the suction duct is in the state of air suction and / or air is supplied to the spinning unit. In this state, the draft roller is driven to rotate.

  As effects of the present invention, the following effects can be obtained.

  Since the fiber bundle remaining in the drafting device can be removed into the suction duct, the spinning machine can be reused while preventing the yarn from clogging between the drafting device and the spinning unit. The spun yarn can be spun continuously after the reactivation.

  Since the structure shown in claim 2 is adopted, not only the fiber bundle remaining in the drafting apparatus but also the yarn waste remaining in the spinning unit can be removed. Therefore, in the spinning machine, not only on the upstream side of the spinning unit but also on the downstream side. It can be restarted while preventing thread jamming.

  Since the fiber bundle remaining in the drafting device can be removed into the suction duct, the spinning machine can be reused while preventing the yarn from clogging between the drafting device and the spinning unit. The spun yarn can be spun continuously after the reactivation.

Next, embodiments of the invention will be described.
1 is a front view showing an overall configuration of a spinning machine employing a controller of the present invention, FIG. 2 is a side view of the spinning machine of FIG. 1, and FIG. 3 is a draft device of the spinning machine of FIG. FIG. 4 is a block diagram of the controller, FIG. 5 is a timing chart when the spinning machine is restarted, and FIG. 6 is a timing chart of FIG. 5 of another embodiment.

First, the overall configuration of the spinning machine 100 in which this embodiment is employed will be described below.
As shown in FIGS. 1 and 2, the spinning machine 100 according to the present embodiment includes a spinning unit 1 that spins a spun yarn Y from a sliver S, and a spun yarn Y that has been cut by the spinning unit 1. A yarn splicing carriage 9 for splicing the yarn, a suction mechanism 28 for sucking yarn waste and yarn breakage generated in each spinning unit 1 into the machine base, and the like are provided.

  The spinning units 1... 1 are arranged in parallel along the longitudinal direction of the machine, and draft the sliver S drawn from the cans K along a path (yarn feed path) in which the spun yarn Y is manufactured. A draft device 3, a spinning unit 4 for spinning the spun yarn Y by twisting the sliver S sent from the draft device 3 by a swirling airflow, and the spun yarn Y spun by the spinning unit 4 to the yarn winding device 7 A yarn feeding device 5 for feeding out, a slab catcher 6 for detecting a yarn defect of the spun yarn Y, a yarn winding device 7 for winding the spun yarn Y while traversing in the bobbin axial direction to form a package 8, and the like. ing.

  The draft device 3 is configured such that the sliver S is sandwiched between draft rollers and drafted while being conveyed from upstream to downstream of the yarn feed path. The draft roller is configured in a four-wire system including a back roller 10, a third roller 11, a second roller 12 having an apron, and a front roller 13, and a pair of the draft rollers are provided vertically.

  In the draft device 3, the sliver S is drafted by providing a difference in the peripheral speed between the draft rollers 10, 11, 12, and 13 arranged at adjacent positions. For example, when the peripheral speed of the back roller 10 is 1 and the peripheral speed of the third roller 11 is 2, the sliver S is drafted twice between the back roller 10 and the third roller 11. In particular, between the second roller 12 and the front roller 13, the sliver S is held by surface contact with the second roller 12 having an apron, so that the peripheral speed ratio is increased to the maximum and the sliver S is drafted to the maximum. .

Here, the draft roller of the draft device 3 will be described in detail below.
As shown in FIG. 2 and FIG. 3, the draft roller of the draft device 3 described above includes the back bottom roller 10a and the back top roller 10b, and the third bottom roller 11a and the third top roller 11b. The roller 11 is constituted, the second bottom roller 12a and the second top roller 12b constitute the second roller 12, and the front bottom roller 13a and the front top roller 13b constitute the front roller 13.

  The bottom rollers 10a, 11a, 12a, and 13a are arranged on the machine base side of the spinning unit 1, and the top rollers 10b, 11b, 12b, and 13b are configured to be separable from the bottom rollers 10a, 11a, 12a, and 13a. ing. Then, the top rollers 10b, 11b, 12b, and 13b are brought into pressure contact with the bottom rollers 10a, 11a, 12a, and 13a, and the sliver S is vertically nipped.

  Among these, the back bottom roller 10a and the third bottom roller 11a are provided with a line shaft 20 (see FIG. 1) and a clutch mechanism 21 that pass through the spinning units 1, 1... Along the longitudinal direction of the spinning machine 100. The rotational drive of the line shaft 20 is transmitted via the clutch mechanism 21 and is rotationally driven. One end of the line shaft 20 is connected to a draft motor 22 disposed in the spinning machine 100, and is always driven to rotate while the spinning machine 100 is activated. The draft motor 22 is connected to a main controller 37a described later (see FIG. 4).

  The clutch mechanism 21 is provided for each spinning unit 1, 1... And is disposed between the line shaft 20, the back bottom roller 10a, and the third bottom roller 11a, and is attached to the line shaft 20 via an electromagnetic clutch 23. Pulley 21a, pulleys 21b and 21c attached to the back bottom roller 10a and the third bottom roller 11a, and a belt 24 wound around the pulleys 21a, 21b, and 21c. . The electromagnetic clutch 23 is connected to a unit controller 37b described later (see FIG. 4), and the ON / OFF control of the electromagnetic clutch 23 switches the driving / stopping of the back bottom roller 10a and the third bottom roller 11a. .

  The second bottom roller 12a and the front bottom roller 13a are directly connected coaxially with line shafts 26 and 27 extending along the longitudinal direction of the machine base (see FIG. 1). Connected to the motor 22. As described above, the second bottom roller 12a and the front bottom roller 13a are configured to be synchronously rotated and driven simultaneously in the draft device 3 of each spinning unit 1.

  As described above, the draft device 3 is configured such that the bottom rollers 10 a, 11 a, 12 a, and 13 a are rotationally driven through the line shafts 20, 26, and 27 connected to the draft motor 22. Since the draft motor 22 is also operating while the spinning machine 100 is activated, the line shafts 20, 26, and 27 are always rotated by driving the draft motor 22. The second bottom roller 12a and the front bottom roller 13a of the draft roller are always driven to rotate through the line shafts 26 and 27, and the back bottom roller 10a and the third bottom roller 11a are the electromagnetic clutch 23 of the clutch mechanism 21 described above. ON / OFF control is performed so that driving / stopping can be switched.

  As shown in FIGS. 2 and 3, the spinning unit 4 of the present embodiment includes an air spinning nozzle (not shown) and a spinning spindle that generate a swirling flow capable of high-speed spinning. Compressed air is supplied to the spinning unit 4 from a tank 18 filled with compressed air, a swirling airflow is generated in the air spinning nozzle, and the spun yarn Y is spun.

  The tank 18 is disposed in the machine base body, and an air supply pipe for supplying compressed air from the tank 18 to the spinning unit 4 of each spinning unit 1. A solenoid valve 19 for switching and controlling the supply of air is provided. The solenoid valve 19 is connected to a unit controller 37b, which will be described later (see FIG. 4), and the supply / stop of compressed air to the spinning unit 4 is switched when the solenoid valve 19 is ON / OFF controlled. In this embodiment, the spinning machine 100 is always switched to “ON” while the spinning machine 100 is activated, and is controlled so that compressed air is supplied to the spinning unit 4. When the spinning operation is interrupted in the spinning unit 4 of a certain spinning unit 1, the solenoid valve 19 may be switched to “OFF” so that compressed air is not supplied to the spinning unit 4.

  The spinning unit 4 is not limited to such a configuration. For example, the spinning unit 4 includes a two-stage air spinning nozzle, a twisting member including a pair of air spinning nozzles and a pair of twisting rollers, and a spinning speed of several. For example, a spinning section capable of spinning at other speeds of 100 m / min can be employed.

  As shown in FIG. 2, the yarn feeding device 5 has a slack tube (not shown) that draws the spun yarn Y to the downstream side of the delivery roller 15 and the like while the spun yarn Y is carried out while being nipped between the delivery roller 15 and the nip roller 16. It is arranged. The slab catcher 6 is configured to detect a yarn defect such as uneven thickness of the spun yarn Y, and to detect and detect the yarn defect so as not to be wound around the package 8. The yarn splicing carriage 9 is disposed so as to be able to travel in the lower part along the longitudinal direction of the machine base, and when the spun yarn Y is cut by the slab catcher 6, it is traveled to a predetermined spinning unit 1 to perform the splicing. It is configured.

  As shown in FIG. 1 to FIG. 3, the suction mechanism 28 includes a suction duct 30, 31, and 32 that extends substantially horizontally along the longitudinal direction inside the machine base, and is spun from the suction duct 30, 31, and 32. Suction pipes 30a, 31a, 32a extending toward the front of the machine base, that is, the spinning unit 1, for each unit 1, a dust box 33 connected to one end of the suction ducts 30, 31, 32, and a suction duct connected to the dust box 33 It comprises a suction blower 34 provided with a blower motor 34a as an air suction means for generating a suction force at 30, 31, 32 (see FIG. 1).

  One end of the suction pipe 30 a is connected to the suction duct 30, and the other end is on the upstream side of the spinning unit 4 (air spinning nozzle inlet side) and is opened near the front roller 13. The suction pipe 31 a has one end connected to the suction duct 31 and the other end on the downstream side (exit side) of the spinning unit 4 and opened between the spinning unit 4 and the delivery roller 15. The suction pipe 32 a has one end connected to the suction duct 32 and the other end opened between the delivery roller 15 and the slab catcher 6.

  By operating the blower motor 34a, a suction force is generated in the suction pipes 30a, 31a, and 32a through the suction ducts 30, 31, and 32, and the wind of the sliver S is generated from the openings of the suction pipes 30a, 31a, and 32a. Cotton, lint, etc. are sucked. The blower motor 34a is connected to a main controller 37a described later (see FIG. 4), and is always driven while the spinning machine 100 is activated. In addition, a filter (not shown) or the like is disposed inside the dust box 33, and dust, yarn waste, and the like sucked through the suction ducts 30, 31, and 32 are collected.

  In the suction duct 30, the fluff contained in the sliver S fed from the draft device 3 to the spinning unit 4 is sucked from the opening of the suction pipe 30a by the suction force generated by the blower motor 34a (suction blower 34). The This fluff is sent to the dust box 33 through the suction duct 30.

  The spun yarn Y cut by the slab catcher 6 is sucked into the suction duct 31 as yarn waste from the opening of the suction pipe 31a by the suction force generated by the blower motor 34a (suction blower 34). This yarn waste is sent to the dust box 33 via the suction duct 31. That is, while the yarn defect is cut by the slab catcher 6, the driving of the back bottom roller 10a and the third bottom roller 11a of the draft device 3 is stopped, while the second bottom roller 12a and the front bottom roller 13a are rotationally driven. The sliver S sent to the draft device 3 is torn off by the back roller 10 and the third roller 11, sent to the downstream side of the spinning unit 4 as yarn waste, and sucked into the suction duct 31. By adopting such a configuration, such yarn waste does not remain in the draft device 3 or the spinning unit 4, so that even when the spinning operation is resumed, yarn clogging in the spinning unit 4 does not occur.

  The spun yarn Y swelled from the spinning section 4 during the splicing operation by the splicing carriage 9 is sucked from the opening of the suction pipe 32a by the suction force generated by the blower motor 34a (suction blower 34). It is sucked into the interior of 32a. Thus, by providing the suction pipe 32a, the slack of the yarn generated between the delivery roller 15 and the yarn splicing portion is prevented, that is, the occurrence of yarn entanglement and chattering is prevented.

Next, the operation control of the spinning machine 100 by the controller 37 will be described in detail below.
As shown in FIG. 4, the above-described solenoid valve 19, draft motor 22, electromagnetic clutch 23, blower motor 34 a, and the like are connected to the controller 37 as the operation control device of the spinning machine 100, and the draft device 3, The operations of the spinning unit 4 and the suction mechanism 28 are controlled.

  The controller 37 of the present embodiment includes a main controller 37a provided on the machine base body and connected to the draft motor 22, the blower motor 34a, the yarn splicing carriage 9 (drive unit and traveling unit), the solenoid valve 19, the electromagnetic clutch 23, and the like. The slab catcher 6 is connected to a plurality of unit controllers 37b, 37b,. The controller 37 (main controller 37a and unit controller 37b) includes a CPU that executes various arithmetic processes and controls, an EEPROM as a nonvolatile memory, a RAM that temporarily stores various data, and the like.

  The unit controller 37b is provided for each spinning unit 1, 1..., And each unit controller 37b, 37b... Is connected to the main controller 37a. That is, a unit controller 37b corresponding to the spinning units 1, 1... Is connected to one main controller 37a, and the main controller 37a performs operations such as starting and stopping of each spinning unit 1.1. It is configured to be centrally controlled. However, the controller 37 may be configured to directly communicate with the solenoid valve 19 and the like with the main controller 37a by omitting the unit controller 37b.

First, operation control by the controller 37 when the spinning machine 100 is activated will be described below.
The spinning machine 100 being activated is controlled by the controller 37 so that the draft motor 22 and the blower motor 34a are always operated. Further, in the spinning units 1..., The solenoid valve 19 is turned “ON” and compressed air is supplied to the spinning unit 4, and the electromagnetic clutch 23 is turned “ON” during the spinning operation, and the back bottom roller 10 a. The third bottom roller 11a is controlled to be driven to rotate. By controlling the operation in this manner, the sliver S sent out from the upstream side of the yarn feed path of the draft roller is drafted by the draft device 3, and the drafted sliver S is sent to the spinning unit 4 downstream of the draft device 3. Thus, the spun yarn Y is spun.

  The spun yarn Y spun is fed by the delivery roller 15 on the downstream side of the spinning unit 4 and passed through the slab catcher 6. Here, when an abnormality is detected in the spun yarn Y by the slab catcher 6, the controller 37 switches the electromagnetic clutch 23 to "OFF" and stops the driving of the back bottom roller 10a and the third bottom roller 11a, The spinning operation in the relevant spinning unit 1 is stopped (work is stopped), and the slab catcher 6 is controlled to cut the yarn defect. At this time, the solenoid valve 19 may be switched to “OFF” so that the supply of compressed air to the spinning unit 4 is stopped.

  When the yarn defect of the spun yarn Y is cut by the slab catcher 6, the controller 37 controls the traveling of the yarn splicing cart 9 to the corresponding spinning unit 1. When the yarn splicing carriage 9 arrives at the spinning unit 1, the electromagnetic clutch 23 is switched to “ON” by the controller 37, and the rotation driving of the back bottom roller 10 a and the third bottom roller 11 a is controlled to resume. In the yarn splicing carriage 9, yarn splicing is performed while the yarn end swollen from the spinning unit 4 and the yarn end on the winding side are sucked by a suction pipe (not shown).

  Thus, while the spinning machine 100 is in operation, the controller 37 switches and controls the drafting device 3 and the suction mechanism 28 of each spinning unit 1, 1... Without causing the yarn clogging in the spinning unit 4 or the like. The operation is controlled so that the spun yarn Y is continuously spun. In addition, as a case where the spinning operation in the spinning unit 1 is temporarily stopped, in addition to the case described above, there are cases such as a maintenance operation of the spinning unit 1 and a mounting operation of the package 8.

Next, the operation control by the controller 37 when the spinning machine 100 is restarted will be described below.
In the present embodiment, the controller 37 controls the spinning machine 100 so that the yarn clogging does not occur in the spinning unit 4 or the like even if the operation stop described above is repeated, and for example, the spinning machine 100 suddenly stops due to a power failure or the like. When the spinning machine 100 is stopped, that is, when the main power supply of the spinning machine 100 is completely temporarily disconnected (completely stopped), the spinning machine 100 is restarted so that the yarn clogging does not occur in the spinning unit 4 or the like. I have control.

  Here, the state in which the spinning machine 100 is completely stopped is a state in which the driving of the draft motor 22 and the blower motor 34a is forcibly stopped, unlike the operation stop state described above. The spinning machine 100 that has been completely stopped can be restarted by turning on the main switch 38 (see FIG. 4) connected to the controller 37 (main controller 37a). To return to the state.

  FIG. 5 is a timing chart for operating the electromagnetic clutch 23 (a), the solenoid valve 19 (b), the blower motor 34a (c), and the draft motor 22 (d) when the spinning machine 100 is restarted. In the spinning machine 100 that has been completely stopped, the electromagnetic clutch 23 and the solenoid valve 19 are switched to “OFF”, and the blower motor 34a and the draft motor 22 are not driven. From this state, when the main switch 38 is switched to “ON”, the blower motor 34a is first operated by the controller 37 (point A in FIG. 5), and then the draft motor 22 is operated (point B in FIG. 5).

  In this manner, the spinning machine 100 is controlled to drive the blower motor 34a and the draft motor 22 from the completely stopped state, and is returned to the operation stopped state. From this state (work stopped state), the controller 37 switches the solenoid valve 19 and the solenoid valve 19 to “ON” and the electromagnetic clutch 23 to “ON” (point C in FIG. 5). Is resumed.

  When the spinning machine 100 is forcibly stopped during a spinning operation due to a power failure or the like, the sliver S remains on the draft roller of the draft device 3. That is, in the draft device 3, since the apron is provided in the second roller 12 and the pressure between the top and the bottom is strong, the draft motor 22 is stopped and the bottom rollers 10a, 11a, 12a, and 13a are driven. Is stopped, the sliver S remains as yarn waste between the second roller 12 and the front roller 13. Since the blower motor 34a is also stopped, the yarn waste (sliver S) is not sucked into the suction duct 30.

  In this embodiment, the controller 37 controls the draft motor 22 to operate after the operation of the blower motor 34a by shifting the operation timing of the draft motor 22 and the blower motor 34a. Specifically, by operating the blower motor 34a, the suction ducts 30, 31, and 32 and the suction pipes 30a, 31a, and 32a are sucked into the air by the blower motor 34a to increase the static pressure. Then, after only the blower motor 34a is driven until the inside of the suction ducts 30, 31, 32 and the suction pipes 30a, 31a, 32a reach a predetermined static pressure, the draft motor 22 is controlled to operate (FIG. 5). Between A and B). Further, when the draft motor 22 is operated, only the inner bottom bottom roller 12a and the front bottom roller 13a of the draft roller are rotationally driven, so that the yarn waste remaining in the draft device 3 is threaded downstream in the yarn feeding direction. It is fed and sucked into the suction duct 30 from the opening of the suction pipe 30a. Then, after all the yarn waste in the draft device 3 is fed, the solenoid valve 19 and the electromagnetic clutch 23 are controlled to be switched to “ON” (between B and C in FIG. 5).

  As described above, when the spinning machine 100 is restarted, the draft motor 22 is operated and the draft roller is rotated by the controller 37 while the blower motor 34a is operated and the suction duct 30 is sucked into the air. Thus, the sliver S (thread waste) remaining in the draft device 3 can be reliably removed into the suction duct 30. Therefore, in the spinning machine 100, it can be restarted while preventing yarn clogging between the draft device 3 and the spinning unit 4 on the upstream side of the spinning unit 4, and the spun yarn is continuously spun. be able to.

  As the timing for operating the draft motor 22, it is only necessary to ensure a minimum waiting time (displacement) until the static pressure in each suction draft 30, 30, 32 is sufficiently increased by the blower motor 34a. In addition, after the draft motor 22 is operated, it is sufficient that a minimum waiting time (deviation) is ensured while all the yarn waste in the draft device 3 is fed, and the timing for performing a normal spinning operation thereafter. Thus, the electromagnetic clutch 23 and the solenoid valve 19 may be operated.

  Further, when the spinning machine 100 is completely stopped, the air supply to the spinning unit 4 is also stopped, so that the sliver S may remain as yarn waste in the spinning unit 4 (air spinning nozzle). Therefore, the timing at which the solenoid valve 19 is turned “ON” is not limited to the above-described embodiment. For example, as shown in the timing chart of FIG. 6, the controller 37 operates the draft motor 22 after the solenoid valve 19 is operated. You may comprise so that it may control.

  In the control method shown in FIG. 6, when the main switch 38 is turned “ON”, the solenoid valve 19 and the blower motor 34a are simultaneously operated (point A in FIG. 6), and then the draft motor 22 is operated. The That is, when the solenoid valve 19 is switched to “ON” simultaneously with the blower motor 34a, compressed air from the tank 18 is supplied to the spinning unit 4 (air spinning nozzle), and yarn waste remaining in the spinning unit 4 is removed. 4 is discharged from the end portion on the outlet side of 4 and the yarn waste is sucked into the suction duct 31 through the opening of the suction pipe 31a, and then the draft motor 22 is controlled to operate (in FIG. 6). A-B).

  In this way, when the spinning machine 100 is restarted, the controller 37 operates the blower motor 34a to turn on the solenoid valve 19 in addition to the state in which the suction ducts 30, 31, 32 are sucked into the air. In a state where the air is supplied to the spinning unit 4 by switching, the draft motor 22 is operated to rotate the draft roller, so that not only the sliver S (thread waste) remaining in the draft device 3 but also the spinning unit 4 remains. It is possible to remove the lint to be removed. Therefore, the spinning machine 100 can be restarted not only on the upstream side but also on the downstream side of the spinning unit 4 while preventing yarn jamming, and the spun yarn can be spun continuously.

  As described above, the method for controlling the operation of the spinning machine 100 according to the present embodiment is applied to the spinning machine 100 having one spinning unit 4 for one drafting device 3. The configuration is not limited to this. For example, the present invention can be applied to a configuration in which the sliver S / S extended from the pair of draft devices 3 and 3 is introduced into one spinning unit 4 for spinning. it can. In such a spinning section, two pneumatic spinning nozzles and a hollow guide shaft are provided, and a pair of slivers S and S are sucked and twisted to produce a real twisted spun yarn Y.

The front view which showed the whole structure of the spinning machine by which the controller of this invention was employ | adopted. The side view of the spinning machine of FIG. FIG. 3 is an enlarged view of a draft device and a spinning unit of the spinning machine of FIG. 1. The block diagram of a controller. Timing chart when the spinning machine is restarted. The timing chart of FIG. 5 of another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spinning unit 3 Draft device 4 Spinning part 10 Back roller 11 Third roller 12 Second roller 13 Front roller 19 Solenoid valve (air supply means)
22 Draft motor (Draft roller driving means)
30, 31, 32 Suction duct 34 Suction blower 34a Blower motor (air suction means)
37 Controller (Operation control device)
100 Spinning machine S Sliver (fiber bundle)
Y spun yarn

Claims (3)

An operation control method for a spinning machine for spinning a fiber bundle fed from a draft device of a spinning unit at a spinning unit,
When restarting the spinning machine, after operating an air suction means for generating a suction force in a suction duct opened toward the spinning unit, a draft roller driving means for rotating the draft roller of the draft device is provided. An operation control method for a spinning machine, wherein the spinning roller is driven to rotate in a state in which the suction duct is sucked by air. An operation control method for a spinning machine for spinning a fiber bundle fed from a draft device of a spinning unit at a spinning unit,
When restarting the spinning machine, after operating air suction means for generating a suction force in the suction duct opened toward the spinning unit and / or air supply means for supplying air to the spinning unit, The draft roller driving means for rotating the draft roller of the draft device is operated to rotate the draft roller while the suction duct is sucked with air and / or with air supplied to the spinning unit. Operation control method for spinning machine. An operation control device for a spinning machine for spinning a fiber bundle fed from a draft device of a spinning unit at a spinning unit,
Air suction means for generating suction force in the suction duct opened toward the spinning unit, air supply means for supplying air to the spinning unit of the spinning unit, and draft roller drive for rotating the draft roller of the draft device When the signal for restarting the spinning machine is input, the air suction unit and / or the air supply unit are operated, and then the draft roller driving unit is operated, and the suction duct is An operation control device for a spinning machine, wherein the draft roller is rotationally driven in a state where air is sucked and / or in a state where air is supplied to the spinning unit.

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