False twisting machine with empty paper core supply device

Abstract

To suppress such a situation that an operator or an automatic robot or the like forgets to replenish an empty paper tube to an empty paper tube supply device and suppress the occurrence of a failure of winding of yarn by a winding device.SOLUTION: A false-twist texturing machine 1 includes: an empty bobbin supply device 23 which is provided for each a plurality of winding devices and supplies an empty bobbin Bw to the winding device; and a control section. The empty bobbin supply device 23 has a stocker section 51, a first sensor 52, and a second sensor 53. The control section 40 generates a notification signal for notifying that the empty bobbin Bw is required to be replenished to the stocker section 51 when it is detected that the number of storage of empty bobbins Bw stored in the stocker section 51 is a prescribed number or less by the first sensor 52 and the second sensor 53.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a false twisting machine having an empty paper tube supplying device that supplies an empty paper tube to a winding device. [Background technology]

[0002] Patent Document 1 discloses a false twisting machine that applies false twisting to yarn. The false twisting machine of Patent Document 1 includes a yarn supplying section, a feed roller that runs the yarn supplied from the yarn supplying section, a winding device that winds the running yarn, and a heating device, a cooling device, and a false twisting device that are arranged on the yarn path from the yarn supplying section to the winding device.

[0003] In a false twisting machine, a yarn fed from a yarn supplying section is false twisted by a false twisting device or the like, and then wound onto a paper tube by a winding device to form a package. The fully wound package is removed from the winding device, and an empty paper tube with no yarn wound thereon is attached to the winding device, after which the yarn is wound again by the winding device.

[0004] Patent Document 2 discloses an empty paper tube supplying device (bobbin exchange device) that supplies empty paper tubes (empty bobbins) to a winding device of a false twisting machine, etc. The empty paper tube supplying device can accommodate empty paper tubes, and when the winding device winds the yarn onto the paper tube to form a full wound package, the full wound package is removed and an empty paper tube is supplied to the winding device from an empty paper tube supply rail. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2011-47074 A [Patent Document 2] Japanese Patent Application Publication No. 10-279188 Summary of the Invention [Problem to be solved by the invention]

[0006] The empty paper tube supplying device is appropriately replenished with empty paper tubes by an operator or an automatic robot. Here, if there are no empty paper tubes stored in the empty paper tube supplying device but empty paper tubes are forgotten to be replenished, the empty paper tube cannot be supplied from the empty paper tube supplying device to the winding device. In the false twisting machine, the yarn is continuously supplied from the yarn supplying unit. Therefore, if an empty paper tube is not supplied to the winding device after the full wound package is removed from the winding device, the yarn continues to be supplied from the yarn supplying unit, which may cause problems such as the yarn becoming tangled in the winding device.

[0007] In addition, if the yarn breaks during winding or if threading on the winding device fails, the winding by the winding device may be interrupted midway and the next empty paper tube may be required to be supplied promptly. In such a case, if the empty paper tube supplying device does not contain an empty paper tube, the above-mentioned problems may occur, and there is a great need to know the timing for refilling the empty paper tube supplying device with empty paper tubes.

[0008] In particular, in a false twisting machine having multiple winding devices, it is difficult to determine the timing for refilling empty paper tubes for all of the empty paper tube supplying devices corresponding to each winding device, and it is easy to forget to refill empty paper tubes.

[0009] The object of the present invention is to By workers or automatic robots, etc. To provide a false twisting machine capable of suppressing forgetting to replenish an empty paper tube supplying device with empty paper tubes and suppressing failure of yarn winding by a winding device. [Means for solving the problem]

[0010] The present invention comprises a plurality of winding devices that wind yarn around a paper tube to form a package, a plurality of empty paper tube supplying devices provided for each of the plurality of winding devices and supplying empty paper tubes to the winding devices, and a control unit, wherein the empty paper tube supplying device has a storage unit capable of storing a plurality of the empty paper tubes, and at least one sensor that detects that the number of the empty paper tubes stored in the storage unit is equal to or less than a predetermined number, and when the at least one sensor detects that the number of the empty paper tubes stored in the storage unit is equal to or less than the predetermined number, the control unit generates an alarm signal to notify the storage unit that the empty paper tubes need to be replenished.

[0011] According to the present invention, since the stocker section can be replenished with empty paper tubes based on the notification signal, it is possible to grasp the timing for replenishing empty paper tubes for all of the empty paper tube supply devices corresponding to the multiple winding devices. By workers or automatic robots, etc. This makes it possible to prevent forgetting to replenish the empty paper tubes in the empty paper tube supplying device, and to prevent failure to wind the yarn by the winding device.

[0012] In the present invention, it is preferable that the at least one sensor includes a first sensor that detects that the number of empty paper tubes stored in the storage section is equal to or less than a first predetermined number, the first predetermined number being a number greater than or equal to 1.

[0013] When a large number of winding devices are installed, if empty paper tubes are replenished in the stocker section after the number of empty paper tubes stored in the stocker section reaches zero, the empty paper tube supply device may not be able to keep up with the supply of empty paper tubes to the winding devices. According to the present invention, a notification signal can be generated in advance before the number of empty paper tubes stored in the stocker section reaches zero. This makes it possible to suppress delays in replenishing the stocker section with empty paper tubes.

[0014] In the present invention, it is preferable that the at least one sensor includes a second sensor that detects that the number of empty paper tubes accommodated in the stocker unit is zero.

[0015] According to the present invention, a notification signal can be generated when the number of empty paper tubes stored in the stocker unit becomes 0. Therefore, it is possible to grasp the highly urgent timing when the number of empty paper tubes stored in the stocker unit becomes 0 and empty paper tubes need to be quickly replenished.

[0016] In the present invention, it is preferable that the notification signal includes a priority notification signal for notifying that the empty paper tubes need to be replenished in the stocker section that stores zero empty paper tubes in priority over other stocker sections when the second sensor detects that the number of empty paper tubes stored in any of the stocker sections of each of the multiple empty paper tube supply devices is zero.

[0017] According to the present invention, by replenishing empty paper tubes based on the priority notification signal, it is possible to preferentially replenish empty paper tubes to a stocker unit among a plurality of stockers that contains 0 empty paper tubes. This makes it possible to prevent a situation in which empty paper tubes are not supplied from the empty paper tube supply device to the winding device.

[0018] In the present invention, it is preferable that when the number of empty paper tubes stored in the storage unit is zero, the control unit controls the winding device corresponding to that storage unit so that it does not perform a winding operation again after forming a full package.

[0019] According to the present invention, when the number of empty paper tubes stored in a certain stocker unit becomes 0, the winding device corresponding to that stocker unit will not resume winding operation after forming a full package. This makes it possible to avoid the problem of the yarn becoming tangled in the winding device that resumes winding operation without a paper tube.

[0020] In the present invention, it is preferable that the at least one sensor includes two or more sensors, and each of the two or more sensors is a sensor that detects that the predetermined numbers, which are different from one another, are equal to or less than the predetermined numbers.

[0021] According to the present invention, by providing two or more sensors, the number of empty paper tubes stored in the stocker section can be grasped in more detail. Therefore, it becomes easier to freely adjust the timing for notifying the need to replenish empty paper tubes according to the situation at the site.

[0022] In the present invention, it is preferable that the device further includes an alarm unit capable of executing an alarm operation to notify an operator that the empty paper tubes need to be refilled in the stocker unit, and that the control unit executes the alarm operation by sending the alarm signal to the alarm unit.

[0023] According to the present invention, when the stocker section is replenished with empty paper tubes by an operator, the operator can reliably grasp the timing for replenishing the empty paper tubes by the notification action of the notification section.

[0024] In addition, in the present invention, it is preferable that the device further includes an empty paper tube refilling robot capable of automatically performing the operation of refilling the empty paper tubes into the stocker section, and the control unit causes the empty paper tube refilling robot to perform the refilling operation by sending the alarm signal.

[0025] According to the present invention, when the stocker section is automatically replenished with empty paper tubes by an empty paper tube replenishing robot, the timing of the replenishing operation can be appropriately controlled.

[0026] In the present invention, it is preferable that the at least one sensor includes a third sensor capable of detecting that the number of empty paper tubes stored in the storage section is at its maximum, and that the control section controls the empty paper tube refill robot not to perform the refilling operation when the third sensor detects that the number of empty paper tubes stored in the storage section is at its maximum.

[0027] According to the present invention, when the empty paper tube refilling robot automatically refills the empty paper tubes into the stocker section, the refilling operation can be prevented from being executed when the stocker section is filled with the maximum number of empty paper tubes, thereby preventing the empty paper tubes from overflowing from the stocker section. [Brief description of the drawings]

[0028] [Figure 1] FIG. 1 is a side view of a false twisting machine according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a view seen from the direction II in FIG. [Diagram 3] FIG. 4 is a schematic diagram showing a configuration of a winding section. [Figure 4] FIG. 2 is a schematic diagram showing a configuration of an empty bobbin supplying device. [Diagram 5] FIG. 2 is a block diagram showing the electrical configuration of the false twisting machine. [Figure 6] FIG. 10 is a block diagram showing an electrical configuration of a false twisting machine according to a modified example. [Figure 7] 13 is a schematic diagram showing a configuration of an empty bobbin supplying device according to a modified example. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0030] (Overall configuration of false twisting machine 1) FIG. 1 is a side view showing a schematic configuration of the false-twisting machine 1 according to the present embodiment. Hereinafter, the direction perpendicular to the plane of FIG. 1 is defined as the longitudinal direction of the machine base, and the left-right direction of the plane of the drawing is defined as the width direction of the machine base. The direction perpendicular to both the longitudinal direction and the width direction of the machine base is defined as the vertical direction (the direction of gravity) in which gravity acts. Hereinafter, the above direction terms will be appropriately used for explanation.

[0031] The false-twisting machine 1 is configured to be able to perform false-twisting on a yarn Y made of synthetic fiber such as nylon (polyamide-based fiber). The false-twisting machine 1 includes a yarn-feeding unit 2 for supplying the yarn Y, a processing unit 3 for performing false-twisting on the yarn Y supplied from the yarn-feeding unit 2, a winding unit 4 for winding the yarn Y processed by the processing unit 3 onto a winding bobbin Bw (the paper tube of the present invention), and a control unit 40 (see FIG. 5). Each component (described later) of the yarn-feeding unit 2, the processing unit 3, and the winding unit 4 is arranged in a plurality in the longitudinal direction of the machine base perpendicular to the running surface of the yarn (the plane of FIG. 1) where the yarn path from the yarn-feeding unit 2 through the processing unit 3 to the winding unit 4 is arranged.

[0032] The yarn-feeding unit 2 has a creel stand 7 that holds a plurality of yarn packages Ps and supplies a plurality of yarns Y to the processing unit 3. The processing unit 3 is configured such that, in order from the upstream side in the yarn running direction, a first feed roller 11, a twist stopper guide 12, a first heating device 13, a cooling device 14, a false-twisting device 15, a second feed roller 16, an entanglement device 17, a third feed roller 18, a second heating device 19, and a fourth feed roller 20 are arranged. The winding unit 4 winds the yarn Y false-twisted by the processing unit 3 onto the winding bobbin Bw with a winding device 21 to form a winding package Pw (the package of the present invention).

[0033] The false twisting machine 1 also has a main machine base 8 and a winding table 9 arranged at an interval in the width direction of the machine base. The main machine base 8 and the winding table 9 extend to approximately the same length in the longitudinal direction of the machine base and are arranged to face each other. An upper part of the main machine base 8 and an upper part of the winding table 9 are connected by a support frame 10. Each device constituting the processing section 3 is mainly attached to the main machine base 8 and the support frame 10. The main machine base 8, the winding table 9, and the support frame 10 form a working space 22 where an operator can perform work such as threading on each device. The yarn path is formed so that the yarn Y mainly runs around the working space 22.

[0034] The false twisting machine 1 has a unit called a span, which includes a pair of a main machine base 8 and a winding table 9 arranged opposite each other. In one span, the various devices are arranged so that multiple yarns Y running in a line in the longitudinal direction of the machine base can be false twisted simultaneously. As an example, one winding table 9 is provided with 12 winding devices 21 (see FIG. 2). In the false twisting machine 1, the spans are arranged symmetrically on the left and right of the page with the center line C in the width direction of the main machine base 8 as the axis of symmetry (the main machine base 8 is common to the left and right spans), and multiple spans are arranged in the longitudinal direction of the machine base.

[0035] (Configuration of processing part) Next, a description will be given of each component of the processing section 3. The first feed roller 11 is for sending the yarn Y supplied from the yarn supplying section 2 to the first heating device 13. The first feed roller 11 is disposed above the winding table 9 (see FIG. 1). The first feed rollers 11 are arranged in a row in the longitudinal direction of the machine base.

[0036] The twist stop guide 12 is provided to prevent the twist imparted to the yarn Y by the false twist device 15, which will be described later, from propagating upstream of the twist stop guide 12 in the yarn running direction. The twist stop guide 12 is disposed downstream of the first feed roller 11 in the yarn running direction and upstream of the first heating device 13 in the yarn running direction. The twist stop guides 12 are provided, for example, individually for the multiple yarns Y supplied from the yarn supplying section 2, and are arranged in a row in the machine longitudinal direction.

[0037] The first heating device 13 is for heating the yarn Y fed from the first feed roller 11, and is installed on the support frame 10 (see FIG. 1). A plurality of first heating devices 13 are provided for the plurality of yarns Y supplied from the yarn supplying section 2, and are arranged in a row in the machine longitudinal direction.

[0038] The cooling device 14 is for cooling the yarn Y heated by the first heating device 13. The cooling device 14 is disposed downstream in the yarn running direction of the first heating device 13 and upstream in the yarn running direction of the false twist device 15. A plurality of cooling devices 14 are provided for the plurality of yarns Y supplied from the yarn supplying section 2, and are arranged in a row in the machine longitudinal direction.

[0039] The false twist device 15 is a device for imparting a twist to the yarn Y. The false twist device 15 is disposed immediately downstream in the yarn running direction of the cooling device 14. A plurality of false twist devices 15 are arranged in the longitudinal direction of the machine. For example, twelve false twist devices 15 are provided per span.

[0040] The second feed roller 16 is a roller that sends the yarn Y, which has been twisted by the false twist device 15, toward the intertwining device 17. The second feed roller 16 is disposed downstream of the false twist device 15 in the yarn running direction on the main machine base 8. The conveying speed of the yarn Y by the second feed roller 16 is faster than the conveying speed of the yarn Y by the first feed roller 11. Therefore, the yarn Y is stretched between the first feed roller 11 and the second feed roller 16.

[0041] The intertwining device 17 is a device that intertwines the yarn Y by injecting air onto the yarn Y. The intertwining device 17 is disposed below the second feed roller 16 on the main machine base 8.

[0042] The third feed roller 18 is a roller that sends the yarn Y, which has been entangled by the entangling device 17, toward the second heating device 19. The third feed roller 18 is disposed below the entangling device 17 on the main machine base 8. The conveying speed of the yarn Y by the third feed roller 18 is slower than the conveying speed of the yarn Y by the second feed roller 16. Therefore, the yarn Y is relaxed between the second feed roller 16 and the third feed roller 18.

[0043] The second heating device 19 is a device for heating the yarn Y fed from the third feed roller 18. The second heating device 19 is disposed below the third feed roller 18 on the main machine base 8. The second heating devices 19 extend in the vertical direction, and one is provided for each span.

[0044] The fourth feed roller 20 is a roller that sends the yarn Y that has been heat-treated by the second heating device 19 toward the winding device 21. The fourth feed roller 20 is disposed below the winding table 9. The conveying speed of the yarn Y by the fourth feed roller 20 is slower than the conveying speed of the yarn Y by the third feed roller 18. Therefore, the yarn Y is relaxed between the third feed roller 18 and the fourth feed roller 20.

[0045] In the processing section 3 configured as above, the yarn Y stretched between the first feed roller 11 and the second feed roller 16 is twisted by the false twist device 15. The twist formed by the false twist device 15 propagates to the twist stop guide 12, but does not propagate upstream of the twist stop guide 12 in the yarn running direction. The yarn Y stretched and twisted is heated and heat-set by the first heating device 13, and then cooled by the cooling device 14. The yarn Y is untwisted downstream from the false twist device 15, but the above heat-set maintains the state in which each filament is false-twisted in a wavy shape. The yarn Y false-twisted by the false twist device 15 is relaxed between the second feed roller 16 and the third feed roller 18, and is entangled by the entanglement device 17, and is guided downstream in the yarn running direction. Furthermore, the yarn Y is heat-set by the second heating device 19 while being relaxed between the third feed roller 18 and the fourth feed roller 20. Finally, the yarn Y fed from the fourth feed roller 20 is wound by a winding device 21 to form a winding package Pw.

[0046] (Configuration of winding section 4) Next, the configuration of the winding section 4 will be described with reference to Figs. 2 and 3. As shown in Fig. 3, the winding section 4 has a plurality of winding devices 21 that wind the yarn Y around the winding bobbin Bw to form the winding package Pw, a plurality of empty bobbin supplying devices 23 (empty paper tube supplying devices of the present invention), and a plurality of storage sections 24. The plurality of empty bobbin supplying devices 23 and the plurality of storage sections 24 are provided one for each of the plurality of winding devices 21. Each winding device 21 has a single cradle 31 that rotatably supports the winding bobbin Bw. The winding bobbin Bw supported by the cradle 31 is rotated by, for example, a motor (not shown). The winding device 21 rotates the winding bobbin Bw to wind the yarn Y around the winding bobbin Bw to form the winding package Pw.

[0047] The empty bobbin supplying device 23 is a device for supplying an empty winding bobbin Bw on which the yarn Y is not wound to the winding device 21. The empty winding bobbin Bw (hereinafter, referred to as an empty bobbin Bw) corresponds to an empty paper tube of the present invention. The empty bobbin supplying device 23 will be described in detail later.

[0048] The storage section 24 stores the fully wound winding package Pw formed by the winding device 21. When the winding package Pw becomes fully wound, the winding bobbin Bw supported by the cradle 31 is removed from the winding device 21 and supplied to the storage section 24 as the cradle 31 rotates about a rotation axis in the longitudinal direction of the machine. For example, the storage section 24 can store up to three winding packages Pw. Note that in cases such as when yarn breakage occurs during winding of the yarn Y by the winding device 21, the winding package Pw may be supplied to the storage section 24 even if it is not fully wound.

[0049] (Configuration of empty bobbin supply device 23) Next, the configuration of the empty bobbin supplying device 23 will be described with reference to Fig. 4. The empty bobbin supplying device 23 is a device for supplying an empty bobbin Bw to the winding device 21 after the winding package Pw is removed from the winding device 21 and supplied to the storage section 24. Each empty bobbin supplying device 23 has a stocker section 51 capable of storing four empty bobbins Bw, a first sensor 52, a second sensor 53, and a tip member 54.

[0050] The stocker section 51 has a support member 51a and a side wall 51b. The support member 51a is a member that supports the empty bobbin Bw from below, and is inclined downward toward the side where the winding device 21 is disposed in the machine frame width direction. The support member 51a is machineThe length in the direction of the machine head is formed to be slightly longer than the length along the axis of the empty bobbin Bw. The side wall 51b is a member that extends upward from one end and the other end of the support member 51a in the longitudinal direction of the machine base. In FIG. 4, only the side wall 51b on the back side of the paper of the empty bobbin Bw supported by the support member 51a is shown, but actually, the side wall 51b is also provided on the front side of the paper of the empty bobbin Bw. In the present embodiment, the stocker unit 51 can accommodate a maximum of four empty bobbins Bw. In the present embodiment, the replenishment of the empty bobbin Bw to the stocker unit 51 is manually performed by an operator. The empty bobbin Bw replenished to the stocker unit 51 by the operator moves along the support member 51a that is inclined downward toward the side where the winding device 21 in the width direction of the machine base is arranged. The first empty bobbin Bw accommodated in the stocker unit 51 moves along the inclination of the support member 51a and will be located at the end on the side where the winding device 21 in the width direction of the machine base of the stocker unit 51 is arranged. With the first empty bobbin Bw accommodated in the stocker unit 51, the second to fourth empty bobbins Bw to be further replenished move along the inclination of the stocker unit 51, and the second, third, and fourth empty bobbins Bw will be sequentially located next to the first empty bobbin Bw. Hereinafter, they will be referred to as the first empty bobbin Bw, the second empty bobbin Bw, the third empty bobbin Bw, and the fourth empty bobbin Bw in order from the side closer to the winding device 21.

[0051] The first sensor 52 is a microswitch having a detection piece 52a that protrudes slightly upward from the bottom surface of the support member 51a. The second sensor 53 is a microswitch having a detection piece 53a that protrudes slightly upward from the bottom surface of the support member 51a. The first sensor 52 turns on when the empty bobbin Bw is in contact with the detection piece 52a and turns off when not in contact with the detection piece 52a. The second sensor 53 turns on when the empty bobbin Bw is in contact with the detection piece 53a and turns off when not in contact with the detection piece 53a. Note that the first sensor 52 and the second sensor 53 are not limited to microswitches, and may be infrared sensors that detect the empty bobbin Bw by infrared irradiation or the like.

[0052] The detection piece 52a of the first sensor 52 is disposed at a position where it comes into contact with the third empty bobbin Bw. Therefore, when the first sensor 52 is on, it indicates that the number of empty bobbins Bw accommodated in the stocker section 51 is three or more. On the other hand, when the first sensor 52 is off, it indicates that the number of empty bobbins Bw accommodated is two or less. That is, the first sensor 52 of this embodiment can detect that the number of empty bobbins Bw accommodated in the stocker section 51 is two or less, and corresponds to the first sensor of the present invention.

[0053] The detection piece 53a of the second sensor 53 is disposed at a position where it comes into contact with the second empty bobbin Bw. Therefore, when the second sensor 53 is on, this indicates that the number of empty bobbins Bw accommodated in the stocker section 51 is two or more. On the other hand, when the second sensor 53 is off, this indicates that the number of empty bobbins Bw accommodated is one or less. In this case The second sensor 53 detects the number of empty bobbins Bw accommodated in the stocker section 51. A given number The first sensor of the present invention is capable of detecting that the number of It is possible to consider .

[0054] Furthermore, the control unit 40 can determine whether the number of empty bobbins Bw accommodated in the stocker unit 51 is 1 or 0 based on the on / off switching timing of the second sensor 53. Hereinafter, a mechanism by which the control unit 40 determines the number of empty bobbins Bw accommodated based on the detection of the second sensor 53 will be described.

[0055] The empty bobbin supply device 23 supplies the empty bobbins Bw to the winding device 21 one by one. After the empty bobbin supply device 23 supplies the empty bobbin Bw to the winding device 21 once, the next empty bobbin Bw is not supplied until the winding package Pw becomes full and is removed from the winding device 21. For example, the control unit 40 calculates in advance as a predetermined time the time from when the empty bobbin Bw is supplied from the empty bobbin supply device 23 to the winding device 21 until the winding package Pw becomes full and is removed from the winding device 21 and the next empty bobbin Bw is supplied to the winding device 21. Note that the predetermined time is not limited to being calculated by the control unit 40, and may be input in advance by the operator.

[0056] When the second sensor 53 is off and has switched from on to off within the immediately preceding predetermined time, the control unit 40 determines that the number of empty bobbins Bw accommodated in the stocker unit 51 within the immediately preceding predetermined time has decreased from 2 to 1. This enables the control unit 40 to determine that the number of empty bobbins Bw accommodated in the stocker unit 51 is 1.

[0057] On the other hand, when the second sensor 53 remains off for a predetermined time or more, the control unit 40 determines that the number of empty bobbins Bw accommodated in the stocker unit 51 has dropped from two to one, and then another empty bobbin Bw has been supplied to the winding device 21, causing the number of empty bobbins Bw accommodated in the stocker unit 51 to drop to zero. This allows the control unit 40 to determine that the number of empty bobbins Bw accommodated in the stocker unit 51 is zero. Therefore, the second sensor 53 of this embodiment is capable of detecting that the number of empty bobbins Bw accommodated in the stocker unit 51 is zero, and corresponds to the second sensor of the present invention.

[0058] In addition, in this embodiment, when the first sensor 52 does not detect an empty bobbin Bw and the second sensor 53 detects an empty bobbin Bw, it can be detected that the number of empty bobbins Bw stored in the stocker section 51 is two.

[0059] The tip member 54 is provided at the tip of the stocker section 51 on the side where the winding device 21 is arranged in the machine width direction. The empty bobbin Bw moving along the downwardly inclined support member 51a comes into contact with the tip member 54, thereby restricting the empty bobbin Bw from being supplied to the winding device 21 from the tip of the stocker section 51 on the side where the winding device 21 is arranged.

[0060] The mechanism by which the empty bobbin supplying device 23 supplies the empty bobbin Bw to the winding device 21 will be described below. When the winding device 21 is winding the yarn Y, the empty bobbin supplying device 23 is in a standby position where the tip member 54 can restrict the movement of the empty bobbin Bw (see FIG. 3). When the full winding package Pw formed by the winding device 21 is removed from the winding device 21 by the rotation of the cradle 31, the empty bobbin supplying device 23 moves to a supply position for supplying the empty bobbin Bw to the winding device 21. Specifically, the empty bobbin supplying device 23 moves to the supply position where the cradle 31 is provided by rotating about a rotation axis (not shown) aligned along the machine base longitudinal direction, which is located below the stocker section 51. As a result of the empty bobbin supplying device 23 moving to the supply position, the restriction of the empty bobbin Bw by the tip member 54 is released, and the empty bobbin Bw passes the tip of the stocker section 51 on the side where the winding device 21 is arranged and reaches the cradle 31. The empty bobbin Bw is then supported by the cradle 31. This completes the supply of the empty bobbin Bw from the empty bobbin supplying device 23 to the winding device 21. The rotation of the empty bobbin supplying device 23 is driven by a motor (not shown).

[0061] The false twisting machine 1 according to this embodiment also has a notification unit 61 capable of performing a notification operation to notify an operator that the stocker unit 51 needs to be replenished with empty bobbins Bw (see FIG. 5). The notification unit 61 is, for example, a monitor electrically connected to each empty bobbin supplying device 23. The notification unit 61 performs the notification operation by displaying on the monitor that the stocker unit 51 needs to be replenished with empty bobbins Bw. The timing at which the notification unit 61 performs the notification operation will be described later.

[0062] (Electrical configuration) Fig. 5 is a block diagram showing the electrical configuration of the false twisting machine 1. The control unit 40 controls the operation of each of the components of the yarn supplying unit 2, the processing unit 3, and the winding unit 4. In Fig. 5, due to space limitations, the control unit 40 is connected to one winding device 21 and one empty bobbin supplying device 23 out of the multiple winding devices 21 and the multiple empty bobbin supplying devices 23, but in reality, it is also connected to the other winding devices 21 and empty bobbin supplying devices 23. Note that a control unit 40 may be provided for each of the multiple winding devices 21 and the multiple empty bobbin supplying devices 23.

[0063] The control unit 40 is also electrically connected to the first sensor 52, the second sensor 53, and the notification unit 61. Information on whether the first sensor 52 and the second sensor 53 provided in the empty bobbin supplying device 23 are on or off, i.e., information on whether the first sensor 52 and the second sensor 53 have detected an empty bobbin Bw, is sent to the control unit 40. The control unit 40 causes the notification unit 61 to perform a notification operation at a preset timing based on the information sent from the first sensor 52 and the second sensor 53.

[0064] (Alarm operation) The timing at which the control unit 40 causes the notification unit 61 to perform a notification operation will be described below.

[0065] When the first sensor 52 detects that the number of empty bobbins Bw accommodated in the stocker unit 51 is two or less, the control unit 40 generates a notification signal for notifying the stocker unit 51 that empty bobbins Bw need to be replenished. Then, the control unit 40 transmits the notification signal to the notification unit 61, thereby causing the notification unit 61 to perform a notification operation.

[0066] Furthermore, when the second sensor 53 detects that the number of empty bobbins Bw accommodated in the stocker section 51 is one or less, the control section 40 generates a notification signal again. Then, the control section 40 transmits the notification signal to the notification section 61 to cause the notification section 61 to perform the notification operation again. In this case, the control section 40 may cause the notification section 61 to perform a different notification operation when it is detected that the number of empty bobbins Bw accommodated in the stocker section 51 is two or less from the notification operation when it is detected that the number is one or less. Specifically, the control section 40 causes the display of the notification section 61, which is a monitor, to be different depending on the number of empty bobbins Bw accommodated in the stocker section 51.

[0067] Furthermore, when the second sensor 53 detects that the number of empty bobbins Bw accommodated in the stocker section 51 is zero, the control section 40 generates a priority notification signal. The priority notification signal is a notification signal for notifying the fact that the stocker section 51 accommodating zero empty bobbins Bw needs to be replenished with empty bobbins Bw in priority to the other stocker sections 51 when it is detected that the number of empty bobbins Bw accommodated in any one of the stocker sections 51 of the multiple empty bobbin supplying devices 23 is zero. The control section 40 transmits the priority notification signal to the notification section 61 to cause the notification section 61 to perform a notification operation.

[0068] The control unit 40 controls the notification operation by the notification unit 61 so as to distinguish between a notification operation to be performed by the notification unit 61 when a priority notification signal is transmitted and a notification operation to be performed by the notification unit 61 when a normal notification signal other than a priority notification signal is transmitted. For example, the control unit 40 causes the display of the notification unit 61, which is a monitor, to differ depending on whether a priority notification signal is transmitted or a normal notification signal is transmitted.

[0069] As described above, when the first sensor 52 does not detect an empty bobbin Bw and the second sensor 53 detects an empty bobbin Bw, it can be detected that the number of empty bobbins Bw accommodated in the stocker section 51 is two. The control section 40 may control the operation of the notification section 61 to display information that the number of empty bobbins Bw accommodated in the stocker section 51 is two on the monitor, separately from the notification operation. Furthermore, when the first sensor 52 detects that the number of empty bobbins Bw accommodated in the stocker section 51 is three or more, the control section 40 may control the operation of the notification section 61 to display information that the number of empty bobbins Bw accommodated is three or more on the monitor, separately from the notification operation.

[0070] In addition, when the second sensor 53 detects that the number of empty bobbins Bw contained in the storage section 51 is zero, the control section 40 controls the winding device 21 corresponding to that storage section 51 so that it does not perform winding operation again after forming a fully wound winding package Pw.

[0071] In the false twisting machine 1 of this embodiment, when the first sensor 52 and the second sensor 53 detect that the number of empty bobbins Bw accommodated in the stocker section 51 is equal to or less than a predetermined number, the control section 40 generates a notification signal to notify the stocker section 51 that empty bobbins Bw need to be replenished. In this embodiment, the predetermined number is 2, 1, or 0. The control section 40 then transmits the notification signal to the notification section 61, thereby causing the notification section 61 to execute a notification operation to notify the operator that the stocker section 51 needs to be replenished with empty bobbins Bw. In this way, when the empty bobbins Bw are replenished in the stocker section 51 by the operator, it becomes possible for the operator to know the timing for replenishing the empty bobbins Bw for all of the empty bobbin supplying devices 23 corresponding to the multiple winding devices 21, by the notification operation of the notification section 61. As a result, By workers or automatic robots, etc. This makes it possible to prevent the empty bobbin supply device 23 from forgetting to replenish the empty bobbins Bw in the stocker section 51, and to prevent the winding device 21 from failing to wind the yarn Y.

[0072] In this embodiment, the empty bobbin supplying device 23 has a first sensor 52 that detects that the number of empty bobbins Bw accommodated in the stocker section 51 is two or less, and a second sensor 53 that detects that the number is one or less. This allows the control section 40 to generate a notification signal before the number of empty bobbins Bw accommodated in the stocker section 51 reaches zero. This makes it possible to suppress delays in replenishing the stocker section 51 with empty bobbins Bw.

[0073] In this embodiment, the empty bobbin supplying device 23 has a second sensor 53 that detects that the number of empty bobbins Bw accommodated in the stocker section 51 is zero. This makes it possible to generate a notification signal when the number of empty bobbins Bw accommodated in the stocker section 51 becomes zero. This makes it possible to grasp the highly urgent timing when the number of empty bobbins Bw accommodated in the stocker section 51 becomes zero and it is necessary to quickly replenish the empty bobbins Bw.

[0074] In this embodiment, when the control unit 40 detects that the number of empty bobbins Bw accommodated in any one of the multiple stocker units 51 is zero, the control unit 40 generates a priority notification signal for the stocker unit 51 that accommodates zero empty bobbins Bw. According to this, by replenishing the empty bobbins Bw based on the priority notification signal, it is possible to preferentially replenish the empty bobbins Bw to the stocker unit 51 that accommodates zero empty bobbins Bw among the multiple stocker units 51. This makes it possible to prevent a situation in which the empty bobbin supply device 23 does not supply the empty bobbins Bw to the winding device 21.

[0075] In this embodiment, when the number of empty bobbins Bw accommodated in the stocker section 51 is zero, the control section 40 controls the winding device 21 corresponding to the stocker section 51 not to perform the winding operation again after forming a full winding package Pw. According to this, when the number of empty bobbins Bw accommodated in a certain stocker section 51 becomes zero, the winding device 21 corresponding to that stocker section 51 will not resume the winding operation after forming a full winding package Pw. This makes it possible to avoid a problem in which the yarn Y becomes entangled in the winding device 21 that resumes the winding operation without the winding bobbin Bw.

[0076] In this embodiment, two sensors (a first sensor 52 and a second sensor) are provided for detecting that the number of empty bobbins Bw accommodated in the stocker section 51 is equal to or less than a predetermined number, which are different from each other. By providing two sensors, the number of empty bobbins Bw accommodated in the stocker section 51 can be grasped in more detail. Therefore, it becomes easier to freely adjust the timing for notifying the need to replenish empty bobbins Bw according to the situation at the site, etc.

[0077] (Modification) Below Modifications of the above embodiment will be described below, with the same reference numerals being used to designate components similar to those in the above embodiment, and the description thereof will be omitted where appropriate.

[0078] In the above embodiment, the control unit 40 transmits a notification signal to the notification unit 61 to execute the notification operation. However, the control unit 40 may transmit the notification signal to a device other than the notification unit 61. For example, in the false twisting machine 101, the control unit 140 transmits a notification signal to an empty bobbin refilling robot 161 (an empty paper tube refilling robot of the present invention) (see FIG. 6). The empty bobbin refilling robot 161 is a device capable of automatically executing a refilling operation of empty bobbins Bw to the stocker unit 51. The empty bobbin refilling robot 161 is a robot that can move back and forth along the longitudinal direction of the machine base, for example, and can automatically refill each stocker unit 51 with empty bobbins Bw by operating a robot arm, a conveyor, or the like. The control unit 140 transmits a notification signal to the empty bobbin refilling robot 161 to execute a refilling operation of empty bobbins Bw. According to this configuration, when the empty bobbins Bw are automatically replenished to the stocker section 51 by the empty bobbin replenishment robot 161, the timing of the replenishment operation can be appropriately controlled.

[0079] Furthermore, in the false twisting machine 101 having the empty bobbin replenishing robot 161, the empty bobbin supplying device 123 may have a third sensor 154 that detects whether the number of empty bobbins Bw accommodated in the stocker section 51 is the maximum number that the stocker section 51 can accommodate (see FIG. 7). The detection piece 154a of the third sensor 154 is disposed at a position where it comes into contact with the fourth empty bobbin Bw. When the third sensor 154 is on, this indicates that the number of empty bobbins Bw accommodated in the stocker section 51 is four. When the third sensor 154 is off, this indicates that the number of empty bobbins Bw accommodated is three or less. In this case The third sensor 154 detects the number of empty bobbins Bw accommodated in the stocker section 51. A given number 3 pieces below The first sensor of the present invention is capable of detecting It is possible to consider The third sensor 154 is capable of detecting that the number of empty bobbins Bw accommodated is four, which is the maximum number that can be accommodated, and corresponds to the third sensor of the present invention.

[0080] When the control unit 140 detects that the number of empty bobbins Bw stored in the stocker unit 51 by the third sensor 154 reaches the maximum number, it controls the empty bobbin replenishment robot 161 not to execute the replenishment operation. According to this configuration, when the replenishment of the empty bobbins Bw to the stocker unit 51 is automatically performed by the empty bobbin replenishment robot 161, it is possible to prevent the replenishment operation from being executed when the maximum number of empty bobbins Bw is stored in the stocker unit 51. Thereby, it is possible to prevent the empty bobbins Bw from overflowing from the stocker unit 51.

[0081] Further, when causing the empty bobbin replenishment robot 161 to execute the replenishment operation, the control unit 140 may continue the replenishment operation until the third sensor 154 detects that the number of empty bobbins Bw reaches the maximum number. According to this, when the replenishment of the empty bobbins Bw to the stocker unit 51 is automatically performed by the empty bobbin replenishment robot 161, it is possible to replenish the maximum number of empty bobbins Bw in one replenishment operation.

[0082] In the above embodiment, the third sensor 154 may be installed. In this case, when the control unit 40 detects that the number of empty bobbins Bw stored in the stocker unit 51 by the third sensor 154 reaches the maximum number, it may cause the notification unit 61 to execute an operation of notifying that the replenishment of the empty bobbins Bw cannot be performed on the stocker unit.

[0083] In the above embodiment, the second sensor 53 may be installed at a position where it can detect the first empty bobbin Bw when one or more empty bobbins Bw are stored in the stocker unit 51. In this case, the second sensor 53 is a sensor that detects that the number of empty bobbins Bw stored in the stocker unit 51 is one or more and zero. That is, the second sensor 53 in this case corresponds to the second sensor of the present invention.

[0084] In the present invention, the empty bobbin supplying device 23 may have four sensors. In this case, the four sensors are installed at four positions where the first to fourth empty bobbins Bw can be detected when four empty bobbins Bw are stored in the stocker section 51. The empty bobbin supplying device 23 may have only one sensor.

[0085] In the above embodiment, the control unit 40 may generate the notification signal only when the first sensor 52 detects that the number of empty bobbins Bw accommodated in the stocker unit 51 is two or less. The control unit 40 may also generate the notification signal only when the second sensor 53 detects that the number of empty bobbins Bw accommodated in the stocker unit 51 is one or less. Furthermore, the control unit 40 may generate the notification signal only when the second sensor 53 detects that the number of empty bobbins Bw accommodated in the stocker unit 51 is zero. In any case, when one or both of the first sensor 52 and the second sensor 53 detect that the number of empty bobbins Bw accommodated in the stocker unit 51 is a predetermined number or less, the control unit 40 generates the notification signal and causes the notification unit 61 to perform a notification operation. The timing at which the control unit 40 generates the alarm signal is preset to a timing that can best prevent forgetting to replenish empty bobbins Bw, depending on on-site conditions such as the number of empty bobbin supplying devices 23 installed per false twisting machine 1 and the number of workers replenishing empty bobbins Bw.

[0086] In the above embodiment, the control unit 40 generates a priority notification signal when the second sensor 53 detects that the number of empty bobbins Bw stored in the stocker unit 51 is zero. However, the control unit 40 may generate a normal notification signal, rather than a priority notification signal, when the second sensor 53 detects that the number of empty bobbins Bw stored in the stocker unit 51 is zero.

[0087] In the above embodiment, the stocker section 51 can accommodate four empty bobbins Bw. However, the stocker section 51 may be capable of accommodating two or three empty bobbins Bw, or may be capable of accommodating five or more empty bobbins Bw. The sensors may be installed according to the number of empty bobbins Bw that the stocker section 51 can accommodate. For example, when the stocker section 51 can accommodate n empty bobbins Bw, which is two or more, n sensors may be installed. In this case, the n sensors are installed one at each of n positions that can detect the 1st to nth empty bobbins Bw when n empty bobbins Bw are accommodated in the stocker section 51. When the stocker section 51 can accommodate n empty bobbins Bw, any number of sensors from 1 to n-1 may be installed.

[0088] In the above embodiment, the notification unit 61 is a monitor electrically connected to each empty bobbin supplying device 23. However, the notification unit 61 may be, for example, a lamp attached to each empty bobbin supplying device 23. In this case, the control unit 40 transmits a notification signal to the notification unit 61 to light up the lamp of the notification unit 61 corresponding to the stocker unit 51 in which the number of empty bobbins Bw stored therein has fallen below a predetermined number. The worker can understand that the stocker unit 51 of the empty bobbin supplying device 23 corresponding to the lit lamp needs to be replenished with empty bobbins Bw. The control unit 40 may change the color of the lamp that the notification unit 61 lights up when it transmits a priority notification signal to the notification unit 61 and when it transmits a normal notification signal that is not a priority notification signal. This makes it possible to distinguish whether the notification operation of the notification unit 61 is performed in response to receiving a priority notification signal or a normal notification signal that is not a priority notification signal.

[0089] Further, the notification unit 61 may be, for example, a device that emits a sound. In this case, the notification unit 61 may be attached to each empty bobbin supplying device 23, or may be one notification unit 61 common to the plurality of empty bobbin supplying devices 23. When the notification unit 61 is attached to each empty bobbin supplying device 23, the control unit 40 transmits a notification signal to the notification unit 61 to cause the notification unit 61 corresponding to the stocker unit 51 in which the number of empty bobbins Bw stored therein has become equal to or less than a predetermined number to generate a sound. When the notification unit 61 is one notification unit 61 common to the plurality of empty bobbin supplying devices 23, the control unit 40 transmits a notification signal to the notification unit 61 to cause the notification unit 61 to generate a sound that notifies which stocker unit 51 has the number of empty bobbins Bw stored therein equal to or less than a predetermined number. The control unit 40 may cause the alarm unit 61 to emit different sound patterns depending on whether the alarm unit 61 has transmitted a priority alarm signal or a normal alarm signal other than the priority alarm signal. This makes it possible to distinguish whether the alarm operation of the alarm unit 61 has been performed in response to a priority alarm signal or a normal alarm signal other than the priority alarm signal. [Explanation of symbols]

[0090] 1 False twisting machine 21 Winding device 23 Empty bobbin supply device (empty paper tube supply device) 40 Control section 51 Stocker Section 52 First Sensor 53 Second Sensor 101 False twisting machine 123 Empty bobbin supply device (empty paper tube supply device) 140 Control section 154 3rd Sensor 161 Empty bobbin refill robot (empty paper tube refill robot) Pw Winding Package Y Thread

Claims

1. a plurality of winding devices for winding the yarn onto a paper tube to form a package; A plurality of empty paper tube supply devices provided for each of the plurality of winding devices and supplying empty paper tubes to the winding devices; A control unit, The empty paper tube supply device has a stocker unit capable of storing a plurality of the empty paper tubes, and at least one sensor that detects that the number of the empty paper tubes stored in the stocker unit is equal to or less than a predetermined number, The control unit is When the at least one sensor detects that the number of the empty paper tubes stored in the stocker unit is equal to or less than the predetermined number, a notification signal is generated to notify the stocker unit that the empty paper tubes need to be replenished, The at least one sensor is A first sensor detects that the number of the empty paper tubes accommodated in the stocker unit is equal to or less than the first predetermined number, the first predetermined number being a number equal to or greater than 1; a second sensor that detects that the number of empty paper tubes accommodated in the stocker unit is zero, The notification signal is a priority notification signal for notifying a user that the empty paper tubes need to be replenished in the stocker section having the empty paper tube storage capacity of 0 in priority to the other stocker sections when the second sensor detects that the number of empty paper tubes stored in any of the stocker sections of each of the plurality of empty paper tube supply devices is 0.

2. A false twist processing machine as described in claim 1, characterized in that the alarm signal includes a normal alarm signal different from the priority alarm signal.

3. The control unit is 3. The false twisting machine according to claim 1, wherein when the number of empty paper tubes stored in the storage unit is zero, the winding device corresponding to the storage unit is controlled so as not to perform a winding operation again after a full package is formed.

4. the at least one sensor includes two or more sensors; 4. The false twisting machine according to claim 1, wherein each of the two or more sensors detects whether the predetermined number is equal to or less than the predetermined number, the different sensors being configured to detect each of the two or more predetermined numbers being equal to or less than the predetermined number.

5. Further, a notification unit capable of executing a notification operation to notify an operator that the empty paper tube needs to be replenished in the stocker unit, 5. The false twisting machine according to claim 1, wherein the control unit transmits the notification signal to the notification unit to execute the notification operation.

6. The empty paper tube refilling robot can automatically refill the empty paper tube into the stocker unit, 5. The false twisting machine according to claim 1, wherein the control unit transmits the notification signal to the empty paper tube refilling robot to execute the refilling operation.

7. The at least one sensor includes a third sensor capable of detecting that the number of the empty paper tubes accommodated in the stocker unit is a maximum number, The false twisting machine according to claim 6, characterized in that the control unit controls the empty paper tube replenishment robot not to perform the replenishment operation when the third sensor detects that the number of empty paper tubes stored in the storage unit has reached its maximum.

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