JP2018065637A - Yarn winding equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide yarn winding equipment which can vary at any time a strength of a braking force applied to a package while the package is decreased in a rate.SOLUTION: A winding unit 2 is provided with a brake device 53 having a brake shoe 75 for braking a package 100, an operation chamber 76 for operating the brake shoe 75, and an air pressure variable part 71 for varying a pressure of a fluid supplied to the operation chamber 76. The air pressure variable part 71 has an electromagnetic valve 81 arranged between a supply port 84 and the operation chamber 76, an electromagnetic valve 82 arranged between the operation chamber 76 and an exhaust port 85, and an air pressure control part 83 for opening and closing independently the electromagnetic valve 81 and the electromagnetic valve 82. If opening the electromagnetic valve 81 and closing the electromagnetic valve 82, a pressure of the fluid supplied to the operation chamber 76 is elevated. If closing the electromagnetic valve 81 and opening the electromagnetic valve 82, the pressure described above is lowered. If closing both electromagnetic valves, the pressure described above is maintained constant. Accordingly, the pressure described above can be controlled at any time, and a strength of a braking force applied to the package can be changed at any time.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a yarn winding device.

  Patent Document 1 discloses a yarn winding device that forms a package by winding a yarn supplied from a yarn supplying section onto a winding tube. Specifically, a configuration is shown that includes a contact roller that rotates the package by rotating while contacting the package, and a roller drive source that drives the contact roller. In addition, a configuration for directly braking package rotation is disclosed.

  The yarn winding device includes: a rotating holder that rotates integrally with the winding tube; a package brake that brakes the rotating holder by the pressure of compressed air; an electromagnetic valve that switches between supplying and stopping compressed air to the package brake; And a control unit for opening and closing. The package brake includes a brake piston that brakes rotation of the rotary holder, and a housing that forms a working chamber to which compressed air is supplied. In a state where compressed air is not supplied, the package does not apply a brake and the package can rotate freely. When the control unit controls the solenoid valve and supplies compressed air to the working chamber, the brake piston moves to contact the rotary holder, and the package is decelerated by the frictional resistance generated between the two.

  Patent Document 2 discloses a yarn winding device including a package brake, a solenoid valve, and a control unit similar to Patent Document 1. A control part controls a solenoid valve, and repeats supply of compressed air and exhaust. As a result, a so-called pumping brake effect is produced, and a gentle braking force is applied to the package to stop the rotation of the package. The ratio between the opening time and the closing time of the electromagnetic valve is constant from the start of package deceleration to the package stop.

JP-A-2006-78995 JP 2010-37083 A

  There is a desire to reduce the speed of more complicated packages while monitoring changes in package yarn amount, package peripheral speed, and the like. However, since the yarn winding device described in Patent Document 1 only switches between supply and stop of compressed air with an electromagnetic valve, the pressure in the working chamber cannot be freely controlled.

  Although the yarn winding device described in Patent Document 2 can change the pressure in the working chamber by alternately repeating the supply and stop of compressed air, the opening time and closing time of the solenoid valve during deceleration of the package The ratio of and does not change. That is, the pressure in the working chamber cannot be changed to an arbitrary value during deceleration.

  An object of the present invention is to make it possible to adjust the pressure of the fluid supplied to the working chamber to an arbitrary magnitude at any time during deceleration of the package and to change the magnitude of the braking force acting on the package at any time. It is.

  A yarn winding device according to a first aspect of the present invention is a yarn winding device that forms a package by winding a yarn from a yarn supplying unit capable of supplying yarn to a winding tube, and a brake unit that brakes rotation of the package; A brake device having a working chamber that operates the brake unit by the pressure of fluid inside the fluid chamber, and a fluid pressure variable unit that changes a pressure of the fluid supplied to the working chamber; A first valve disposed between a fluid supply port connected to a fluid supply source and the working chamber; a second valve disposed between the working chamber and a fluid discharge port; the first valve; And a fluid pressure control unit that opens and closes the two valves independently.

  In the present invention, the first valve is a valve for supplying the fluid from the fluid supply port to the working chamber, and the second valve is a valve for discharging the fluid in the working chamber to the fluid discharge port. If the first valve is opened and the second valve is closed, the pressure of the fluid supplied to the working chamber increases. When the first valve is closed and the second valve is opened, the pressure decreases. Moreover, since these valves operate independently by the fluid pressure control unit, the pressure is kept constant by closing both valves. With such a configuration, the pressure of the fluid supplied to the working chamber can be adjusted to an arbitrary size at any time during the deceleration of the package. Therefore, the magnitude of the braking force acting on the package can be changed as needed.

  The yarn winding device according to a second aspect of the present invention is the first aspect, wherein the brake device further includes a pressure detection unit that detects a pressure of the fluid supplied from the fluid pressure variable unit to the working chamber, The fluid pressure control unit controls the first valve and the second valve so that the pressure of the fluid supplied to the working chamber becomes an instruction pressure based on a detection value of the pressure detection unit. It is what.

  Based on the detection value of the pressure detector, the fluid pressure controller controls the first valve and the second valve so that the pressure of the fluid supplied to the working chamber becomes the command pressure. For this reason, the said pressure can be adjusted according to instruction | indication pressure, and the braking force which acts on a package can be changed.

  The yarn winding device according to a third aspect is characterized in that, in the second aspect, the command pressure is sequentially input from the outside to the fluid pressure control unit.

  In the present invention, the command pressure is sequentially input from the outside to the fluid pressure control unit. That is, the magnitude of the indicated pressure can change at any time during the deceleration of the package. Therefore, the magnitude of the braking force acting on the package can be changed at any time according to the situation.

  The yarn winding device according to a fourth aspect of the present invention is the supply device according to any one of the first to third aspects, wherein the brake device is disposed between the first valve and the working chamber of the fluid pressure variable unit. It further has a switching valve, and a supply control part which controls opening and closing of the supply switching valve.

  The supply and non-supply of the fluid from the fluid pressure variable portion to the working chamber is switched by opening and closing the supply switching valve. For this reason, the pressure of the fluid supplied from the fluid pressure variable unit can be further changed to supply the fluid to the working chamber. Therefore, the braking force acting on the package can be changed more finely.

  The yarn winding device according to a fifth aspect of the present invention is characterized in that, in the fourth aspect, the supply control unit causes the supply switching valve to open and close alternately.

  By alternately opening and closing the supply switching valve, fluid supply to the working chamber and non-supply are alternately repeated. As a result, the pressure of the fluid supplied to the working chamber becomes lower than the pressure of the fluid supplied from the fluid pressure variable unit. Therefore, a gentler braking force can be applied to the package than when only the fluid pressure variable portion is used.

  The yarn winding device according to a sixth aspect of the present invention is characterized in that, in the fifth aspect, the supply control unit changes at least one of an opening time and a closing time of the supply switching valve.

  Since at least one of the opening time and the closing time of the supply switching valve is changed by the supply control unit, the pressure of the fluid supplied from the fluid pressure variable unit to the working chamber can be adjusted. Therefore, the braking force acting on the package can be changed more finely.

  A yarn winding device according to a seventh aspect of the present invention is a yarn winding device that forms a package by winding a yarn from a yarn supplying portion that supplies a yarn to a winding tube, and a brake portion that brakes rotation of the package; An operation chamber for operating the brake unit by internal fluid pressure, a fluid supply port connected to a fluid supply source, a supply switching valve disposed between the operation chambers, and a supply control for controlling opening and closing of the supply switching valve And the supply control unit is configured to alternately open and close the supply switching valve while changing at least one of an opening time and a closing time of the supply switching valve. It is what.

  Opening and closing of the supply switching valve is alternately repeated, and supply and non-supply of fluid to the working chamber are alternately repeated. For this reason, the pressure of the fluid supplied to the working chamber is lower than the pressure of the fluid in the fluid supply source. Further, by changing at least one of the opening time and the closing time, the pressure of the fluid supplied to the working chamber can be adjusted to an arbitrary pressure at any time during the deceleration of the package. Therefore, the braking force acting on the package can be changed at any time.

  According to an eighth aspect of the present invention, in the yarn winding device according to any one of the first to seventh aspects, a contact roller that rotates the package by rotating in contact with the package, and a roller that rotationally drives the contact roller. A drive unit, a package rotation speed detection unit for detecting the rotation speed of the package, a contact roller rotation speed detection unit for detecting the rotation speed of the contact roller, and a winding control for controlling the brake device and the roller drive unit. And the winding control unit rotates the package when decelerating the package while maintaining the state where the package and the contact roller are in contact with each other and winding the yarn around the package. Based on the detection result of the speed detection unit and the detection result of the contact roller rotation speed detection unit, the peripheral speed of the package and the peripheral speed of the contact roller The difference between such that within a predetermined range, is characterized in that for controlling the brake device and the roller drive unit.

  For example, at the timing when the package becomes full, the package may be decelerated while maintaining the state where the package and the contact roller are in contact with each other and winding the yarn around the package. At this time, if the difference in the peripheral speed between the package and the contact roller becomes large, there is a risk that a traversing, a surface disorder of the package, or the like may occur. In the present invention, during deceleration of the package, the pressure of the fluid supplied to the working chamber can be adjusted to an arbitrary pressure at any time, and the braking force acting on the package can be changed at any time. The speed difference can be reduced, and those problems can be prevented.

  A yarn winding device according to a ninth aspect of the present invention is the yarn winding apparatus according to any one of the first to eighth aspects, wherein the yarn is disposed between the yarn supplying section and the package and stores the yarn supplied from the yarn supplying section. The storage device, disposed between the yarn supply unit and the yarn storage device, and when the yarn is not connected between the yarn supply unit and the yarn storage device, the yarn end on the yarn supply unit side and the yarn A yarn joining device that connects the yarn end on the yarn storage device side, and the winding control unit controls the brake device and the roller driving unit during yarn joining by the yarn joining device, and the package and The contact roller is decelerated.

  When the yarn is not connected between the yarn supply unit and the yarn storage unit due to yarn breakage or the like, the yarn stored in the yarn storage unit is pulled out while the yarn joining is performed by the yarn joining device. Package formation continues. In this case, when the package is decelerated so that the yarn stored in the yarn storage device is not depleted in a state where the yarn is connected between the yarn storage device and the package, the peripheral speed of the package and the peripheral speed of the contact roller If the difference between the two becomes large, there is a risk that the twill will fall or the surface layer of the package may be disturbed. In the present invention, during deceleration of the package, the pressure of the fluid supplied to the working chamber can be adjusted to any pressure at any time, and the braking force acting on the package can be changed at any time. It can be made small, and those problems can be prevented.

  The yarn winding device according to a tenth aspect of the present invention is the invention according to any one of the first to ninth aspects, wherein the braking device reduces the braking force acting on the package as the yarn amount of the package decreases. The pressure of the fluid supplied to the working chamber is changed.

  The lighter the package, the smaller the braking force acting on the package. Therefore, excessive deceleration of the package can be prevented.

It is a front view of the automatic winder which concerns on this embodiment. It is a block diagram which shows the electric constitution of an automatic winder. It is a schematic side view of a winding unit. It is a front view of a package formation part. It is a block diagram of a brake device. It is sectional drawing of a brake cylinder and the surrounding structure. It is a graph which shows the time change of the pressure of the compressed air supplied to a working chamber by an air pressure variable part. It is a flowchart which shows a series of processes at the time of yarn breakage etc. generating. It is a graph which shows the time change of the pressure of the compressed air supplied to a working chamber. It is a block diagram of a brake device concerning a modification. It is explanatory drawing which shows the timing etc. of opening and closing of a solenoid valve. It is a block diagram of a brake device concerning another modification. It is explanatory drawing which shows the time change etc. of the pressure of compressed air. It is a block diagram of a brake device concerning another modification. It is a schematic side view of the winding unit which concerns on another modification.

  Next, an embodiment of the present invention will be described with reference to FIGS. In addition, as shown in FIG. 1, let the direction where the several winding unit was arranged be the left-right direction, and let the direction where gravity acts be the up-down direction. Further, a direction orthogonal to the left-right direction and the up-down direction is defined as the front-rear direction.

(Schematic configuration of automatic winder)
First, a schematic configuration of the automatic winder 1 will be described with reference to FIGS. 1 and 2. FIG. 1 is a front view of an automatic winder 1 according to the present embodiment. FIG. 2 is a block diagram showing an electrical configuration of the automatic winder 1. The automatic winder 1 includes a plurality of winding units 2 (yarn winding device of the present invention), a doffing device 3, a control device 4, and the like.

  The plurality of winding units 2 are arranged in the left-right direction, and each of them winds the yarn Y unwound from the yarn supplying bobbin Bk onto the winding bobbin Bm (winding tube of the present invention) to form the package 100. . The doffing device 3 is arranged above the plurality of winding units 2 and is configured to be movable in the left-right direction. When the doffing device 3 receives a full winding signal from the winding unit 2, the doffing device 3 moves above the winding unit 2 to remove the full package 100 and empty winding bobbin Bm. The work such as mounting to the take-up unit 2 is performed. As shown in FIG. 2, the control device 4 is electrically connected to a unit control unit 15 (winding control unit of the present invention) of the winding unit 2 described later and a control unit (not shown) of the doffing device 3, Communication with these controllers is performed.

(Winding unit)
Next, the configuration of the winding unit 2 will be described with reference to FIGS. FIG. 3 is a schematic side view of the winding unit. FIG. 4 is a front view of the package forming unit 12 to be described later. As shown in FIGS. 2 and 3, the winding unit 2 is disposed between the yarn supplying unit 11, the package forming unit 12, the yarn storing unit 13, and the yarn supplying unit 11 and the yarn storing unit 13. A yarn joining device 33 and a yarn clearer 36, a unit controller 15 and the like are provided.

(Yarn feeding section)
The yarn supplying section 11 is for supplying the yarn Y wound around the yarn supplying bobbin Bk, and is arranged at the lower end of the winding unit 2. As shown in FIG. 3, the yarn supplying section 11 mainly includes a yarn supplying bobbin support section 21.

  The yarn feeding bobbin support portion 21 supports the yarn feeding bobbin Bk in a substantially upright state. The yarn supplying bobbin support portion 21 is configured to be able to discharge the empty yarn supplying bobbin Bk. When the empty yarn supplying bobbin Bk is discharged, a new yarn supplying bobbin Bk is supplied to the yarn supplying bobbin support portion 21 from a bobbin supplying device (not shown).

(Package forming part)
The package forming unit 12 is used to form the package 100 by winding the yarn Y around the winding bobbin Bm, and is disposed at the upper end of the winding unit 2. As shown in FIGS. 3 and 4, the package forming unit 12 includes a cradle 51 (supporting portion of the present invention), a traverse drum 52 (contact roller of the present invention), a brake device 53, and the like.

  The cradle 51 includes a pair of cradle arms 51a and 51b as shown in FIG. The cradle arms 51 a and 51 b are supported so as to be rotatable about a shaft 54, and rotate in a direction approaching or separating from the traverse drum 52.

  Bobbin holders 56 and 57 for rotatably holding the winding bobbin Bm are attached to the tips of the cradle arms 51a and 51b. The bobbin holders 56 and 57 have holder main bodies 58 and 59 that are fitted to the ends of the winding bobbin Bm in the rotation axis direction, respectively. In the present embodiment, the cradle 51 is configured so that a cone type winding bobbin Bm can be mounted. The holder main bodies 58 and 59 are fitted into the large-diameter side end and the small-diameter side end of the winding bobbin Bm, respectively, and rotate integrally with the winding bobbin Bm.

  The bobbin holder 56 incorporates a brake cylinder 60 described later. A package rotation speed sensor 61 (package rotation speed detection unit of the present invention) is disposed in the vicinity of the bobbin holder 57 and detects the rotation speed of the package 100 and outputs it to the unit control unit 15.

  The traverse drum 52 is rotationally driven by a drum drive motor 62 (roller drive unit of the present invention). When the traverse drum 52 rotates while the package 100 is in contact with the traverse drum 52, the winding bobbin Bm and the package 100 are driven to rotate.

  A traverse groove 52 a is formed on the outer peripheral surface of the traverse drum 52. The traverse drum 52 rotates while passing the yarn Y through the traverse groove 52a, thereby traversing the yarn Y with a predetermined width.

  In the vicinity of the traverse drum 52, a drum rotation speed sensor 63 (contact roller rotation speed detection unit of the present invention) is disposed. The drum rotation speed sensor 63 detects the rotation speed of the traverse drum 52 and outputs it to the unit controller 15.

  The brake device 53 is for braking the rotation of the package 100. Details will be described later.

(Thread storage part)
The yarn storage unit 13 is for temporarily storing the yarn Y unwound from the yarn supply bobbin Bk, and is disposed below the package forming unit 12. As shown in FIG. 3, the yarn storage unit 13 mainly includes a yarn storage drum 41, a drum drive motor 42, a yarn guide member 43, and an upper yarn blowing device 44.

  The yarn storage drum 41 is a substantially cylindrical member, and the yarn Y is stored by winding the yarn Y around the outer peripheral surface thereof. The drum drive motor 42 rotationally drives the yarn storage drum 41. The yarn guide member 43 is a tubular member, and is arranged so that one end portion thereof faces the end portion in the rotation axis direction of the yarn storage drum 41. The yarn Y that has traveled from the yarn supplying section 11 travels inside the yarn guide member 43 and is guided to the yarn storage drum 41. The upper yarn blowing device 44 is disposed adjacent to the yarn guide member 43. The upper yarn blowing device 44 is connected to a compressed air source, and blows down the yarn Y on the upper side (yarn storage unit 13 side) at the time of yarn splicing described later.

  When the drum drive motor 42 rotationally drives the yarn storage drum 41, the yarn Y is guided to the yarn storage drum 41 by the yarn guide member 43 and wound around the outer peripheral surface of the yarn storage drum 41. The wound yarn Y is drawn out from the yarn storage drum 41 and wound around the package 100 when the drum drive motor 62 of the package forming unit 12 rotates the traverse drum 52 and the package 100. As described above, since the yarn Y is stored in the yarn storage unit 13, for example, when the yarn splicing described later is performed, the yarn Y is pulled out from the yarn storage unit 13, and the yarn forming unit 12 winds the yarn Y. The taking operation can be continued.

(Yarn splicing device)
As shown in FIG. 3, the yarn joining device 33 is disposed between the yarn supplying unit 11 and the yarn accumulating unit 13. When the yarn Y is not connected between the yarn supplying unit 11 and the yarn accumulating unit 13, the yarn joining device 33 and the yarn Y on the yarn supplying unit 11 side (hereinafter referred to as a lower yarn Y1) This is for splicing the yarn Y on the yarn storage section 13 side (hereinafter referred to as the upper yarn Y2). Examples of the case where the yarn Y is not connected include when a yarn breakage occurs due to tension, when a yarn is cut due to a yarn defect, when a yarn feeding bobbin Bk is replaced. As the yarn joining device 33, for example, a compressed air type device can be used. The yarn joining device 33 blows compressed air to the lower yarn Y1 and the upper yarn Y2, loosens both yarn ends, blows compressed air to both yarn ends, and entangles the yarn ends with each other. Make a splice.

(Yarn Cleara)
As shown in FIG. 3, the yarn clearer 36 is disposed between the yarn supplying unit 11 and the yarn accumulating unit 13. The yarn clearer 36 detects the yarn defect by monitoring the thickness of the yarn Y and the like. In the vicinity of the yarn clearer 36, a cutter (not shown) for cutting the yarn Y is disposed. When yarn breakage occurs or when the bobbin is replaced, the yarn clearer 36 detects the absence of the yarn Y and outputs a detection signal to the unit controller 15. When a yarn defect is detected, the cutter immediately cuts the yarn Y, and the yarn clearer 36 outputs a detection signal to the unit controller 15.

(Configuration between the yarn supply section and the yarn storage section)
The winding unit 2 includes various devices in addition to the yarn joining device 33 and the yarn clearer 36 described above between the yarn supplying unit 11 and the yarn accumulating unit 13. As shown in FIG. 3, the yarn unwinding assisting device 22, the lower yarn blowing device 31, the upper yarn catching device 32, the lower yarn catching device 34, the tension applying device 35, etc. Has been placed. In this embodiment, the yarn joining device 33 is arranged between the upper yarn catching device 32 and the lower yarn catching device 34, and the yarn clearer 36 is arranged above the tension applying device 35.

  The yarn unwinding assisting device 22 is disposed above the yarn supplying unit 11. The yarn unwinding assisting device 22 has a regulating member 23. The yarn Y unwound from the yarn feeding bobbin Bk is brought into contact with the regulating member 23 from above, and the yarn Y swells due to the centrifugal force at the time of unwinding. Suppress.

  The lower thread blowing device 31 is connected to a compressed air source and blows up the lower thread Y1. The upper thread catching device 32 is connected to a negative pressure source, and sucks and catches the upper thread Y2. The lower thread capturing device 34 is connected to a negative pressure source, and sucks and captures the lower thread Y1 blown up by the lower thread blowing device 31. The tension applying device 35 has, for example, fixed comb teeth and movable comb teeth, and applies a predetermined tension to the yarn Y.

  Further, in the vertical direction, a tubular thread guide member 38 is disposed from the position where the upper thread catching device 32 is disposed to the position where the upper thread blowing device 44 is disposed. An opening at the upper end of the yarn guide member 38 faces the upper yarn blowing device 44, and an opening at the lower end faces the upper yarn catching device 32. A slit (not shown) is provided in the side wall of the yarn guide member 38 along the longitudinal direction.

  When the yarn is cut by the yarn clearer 36, the yarn joining operation is performed as follows by the yarn joining device 33, the yarn storage unit 13, and the like. First, the rotation of the drum drive motor 42 of the yarn storage unit 13 is stopped, and the yarn storage drum 41 is stopped. Further, the lower thread Y1 formed by the yarn cutting by the yarn clearer 36 is sucked and captured by the lower thread capturing device 34, whereby the lower thread Y1 is guided to the yarn joining device 33. Further, the upper yarn blowing device 44 pulls out the upper yarn Y2 attached to the surface of the yarn storage drum 41 and blows it down toward the yarn guide member 38. The upper yarn Y2 blown down is guided from the opening at the upper end of the yarn guide member 38 to the opening at the lower end. When the upper yarn catching device 32 sucks and catches the yarn end of the upper yarn Y2, the upper yarn Y2 is taken out from the slit of the yarn guide member 38 and guided to the yarn joining device 33. The yarn joining device 33 joins the guided lower yarn Y1 and upper yarn Y2.

(Unit control unit)
The unit controller 15 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The unit control unit 15 controls each unit by the CPU in accordance with a program stored in the ROM. Specifically, reception of signals from the yarn clearer 36, the drum rotation speed sensor 63, the package rotation speed sensor 61, the air pressure variable unit 71 described later, the yarn unwinding assisting device 22, the yarn joining device 33, the drum drive motor 42, the operation of the drum drive motor 62, the air pressure variable unit 71 and the like is controlled.

(Detailed configuration of brake device)
Next, a detailed configuration of the brake device 53 of the package forming unit 12 will be described with reference to FIGS. FIG. 5 is a diagram showing an outline of the brake device 53. FIG. 6 is a schematic cross-sectional view of the configuration of the brake cylinder 60 and its surroundings. As shown in FIG. 5, the brake device 53 includes an air pressure variable unit 71 (variable fluid pressure according to the present invention) for changing the pressure of compressed air supplied to the brake cylinder 60 and a working chamber 76 of the brake cylinder 60 described later. Part), a pressure gauge 86 (the pressure detection part of the present invention), and the like.

  The brake cylinder 60 is built in the bobbin holder 56 as described above. As shown in FIG. 6, the brake cylinder 60 includes a housing 72, a bearing sleeve 73, a rotation support portion 74, and the like.

  The housing 72 is attached to the tip of the cradle arm 51a. The bearing sleeve 73 is fitted to the housing 72 so as to be movable and non-rotatable, and a brake shoe 75 (brake portion of the present invention) is provided at a tip portion thereof. A working chamber 76 is formed by the inner wall of the housing 72 and the bearing sleeve 73. The working chamber 76 has an opening and can be supplied with compressed air. A spring 77 that urges the bearing sleeve 73 toward the holder body 58 is disposed between the housing 72 and the bearing sleeve 73.

  The rotation support portion 74 is provided inside the bearing sleeve 73. A shaft 78 is attached to the holder main body 58, and the rotation support portion 74 supports the shaft 78 in a rotatable manner. Between the bearing sleeve 73 and the rotation support portion 74, a spring 79 that urges the rotation support portion 74 toward the holder body 58 is disposed.

  The air pressure variable portion 71 is for changing the pressure of the compressed air supplied to the working chamber 76 of the brake cylinder 60. As shown in FIG. 5, the air pressure variable unit 71 includes an electromagnetic valve 81 (first valve of the present invention), an electromagnetic valve 82 (second valve of the present invention), and an air pressure control unit 83 (fluid pressure control of the present invention). Part) etc.

  The solenoid valves 81 and 82 are both normally closed two-way solenoid valves. The electromagnetic valve 81 is disposed between a supply port 84 (fluid supply port of the present invention) connected to a compressed air supply source (fluid supply source of the present invention) and the working chamber 76. The inlet side of the electromagnetic valve 81 is connected to the supply port 84, and the outlet side is connected to the working chamber 76 and the outlet side of the electromagnetic valve 82. The electromagnetic valve 82 is disposed between the working chamber 76 and an exhaust port 85 (fluid discharge port of the present invention) connected to the outside. The inlet side of the electromagnetic valve 82 is connected to the working chamber 76 and the outlet side of the electromagnetic valve 81, and the outlet side is connected to the exhaust port 85. The air pressure control unit 83 opens and closes the electromagnetic valve 81 and the electromagnetic valve 82 independently. For example, the command pressure is input to the air pressure control unit 83 from the unit control unit 15 or the like.

  The electromagnetic valve 81 switches whether the compressed air from the supply port 84 is supplied to the working chamber 76 or cut off. The solenoid valve 82 switches whether compressed air is discharged to the exhaust port 85 or blocked. When the electromagnetic valve 81 is opened and the electromagnetic valve 82 is closed, compressed air flows as shown by a solid arrow in FIG. 5, and the compressed air is supplied from the supply port 84 to the working chamber 76. Compressed air pressure increases. Further, when the electromagnetic valve 81 is closed and the electromagnetic valve 82 is opened, the compressed air flows as shown by the broken line arrow in FIG. 5, and the compressed air is discharged from the working chamber to the exhaust port 85, and the pressure decreases. To do. Further, since the solenoid valves 81 and 82 are independently operated by the air pressure control unit 83, by closing both the solenoid valves 81 and 82, the compressed air is not supplied or discharged, and the pressure is kept constant. Be drunk.

  The pressure gauge 86 is disposed between the electromagnetic valve 81 and the working chamber 76, detects the pressure of the compressed air supplied to the working chamber 76, and outputs it to the air pressure control unit 83. The air pressure control unit 83 controls the electromagnetic valves 81 and 82 so that the pressure becomes the command pressure based on the detection value of the pressure gauge 86.

  The time change of the pressure by the air pressure varying unit 71 will be described with reference to FIG. In FIG. 7, the initial pressure is P0. The command pressure is sequentially input to the air pressure control unit 83 from the unit control unit 15 or the like. When, for example, P1 larger than P0 is input as an instruction pressure from the unit controller 15 or the like at time T0, the pneumatic controller 83 opens the electromagnetic valve 81 and closes the electromagnetic valve 82 to increase the pressure. , P1 is reached. When P2 lower than P1 is input as an instruction pressure at time T1, the air pressure control unit 83 closes the electromagnetic valve 81 and opens the electromagnetic valve 82 to lower the pressure and reach P2. When another command pressure is input at time T2, the air pressure control unit 83 similarly controls the electromagnetic valves 81 and 82 to change the pressure. As described above, the pressure of the compressed air supplied to the working chamber 76 is adjusted by the air pressure variable unit 71 to any pressure below the pressure Pmax of the compressed air of the supply source as needed.

  With the above-described configuration, the bearing sleeve 73 moves in the direction of the rotation axis of the take-up bobbin Bm according to the pressure of the compressed air supplied to the working chamber 76. That is, the bearing sleeve 73 moves toward the holder main body 58 of the bobbin holder 56 when the pressure increases, and moves away from the holder main body 58 when the pressure decreases. In a state where compressed air is not supplied to the working chamber 76 or in a state where low-pressure compressed air is supplied to such an extent that the brake shoe 75 does not contact the holder main body 58, the holder main body 58 is not braked, and the bearing It can rotate freely with respect to the sleeve 73. At this time, the holder main body 58 is urged toward the take-up bobbin Bm via the shaft 78 by the springs 77 and 79 and the low-pressure compressed air. Thereby, the winding bobbin Bm is rotatably held.

  On the other hand, when high-pressure compressed air is supplied to the working chamber 76, the bearing sleeve 73 moves to the holder body 58 side and the brake shoe 75 comes into contact with the holder body 58. As a result, frictional resistance between the brake shoe 75 and the holder main body 58 is generated, the rotation of the holder main body 58 is braked, and the winding bobbin Bm and the package 100 that rotate integrally with the holder main body 58 are decelerated. The magnitude of the braking force that decelerates the rotation of the package 100 varies depending on the magnitude of the frictional force generated between the brake shoe 75 and the holder body 58, and the magnitude of the frictional force is within the working chamber 76. It changes according to the pressure of compressed air.

  As described above, the pressure of the compressed air supplied to the working chamber 76 can be adjusted by the air pressure variable unit 71 to any pressure below the pressure of the compressed air in the supply source. Therefore, the magnitude of the braking force acting on the package 100 can be changed at any time.

  Further, based on the detected value of the pressure gauge 86, the pneumatic valves 83 control the electromagnetic valves 81 and 82 so that the pressure of the fluid supplied to the working chamber 76 becomes the command pressure. For this reason, the said pressure can be adjusted according to instruction | indication pressure, and the braking force which acts on the package 100 can be changed.

  Further, the command pressure is sequentially input from the unit control unit 15 or the like to the air pressure control unit 83, and the magnitude of the command pressure can be changed at any time during the deceleration of the package 100. For this reason, the magnitude | size of the braking force which acts on the package 100 can be changed appropriately according to a condition.

  As described above, the brake device 53 according to the present embodiment changes the pressure of the compressed air supplied from the air pressure variable unit 71 to the working chamber 76 to change the pressure in the working chamber 76 to an arbitrary pressure. Can be controlled freely. When such a brake device 53 is used, when the package 100 is decelerated, it is possible to appropriately decelerate according to a situation such as a change in the peripheral speed of the package 100, and for example, it is possible to suppress deterioration in quality of the package 100. . As an example thereof, hereinafter, control for decelerating the package 100 at the time of yarn joining when a yarn breakage or the like occurs will be described.

  As described above, the winding unit 2 includes the yarn accumulating unit 13, and the yarn Y stored in the yarn accumulating unit 13 is consumed even during yarn joining while continuing the winding operation of the yarn Y. It is possible to perform yarn joining. However, if the yarn joining fails, the yarn Y stored in the yarn storage unit 13 may be depleted. Therefore, the package 100 is decelerated at the time of yarn joining, and the yarn Y consumed by the yarn storage unit 13 is consumed. The control which suppresses is performed.

  At that time, the winding speed of the package 100 is desired to be reduced as fast as possible. However, if the speed is reduced too rapidly, the thread on the surface layer of the package 100 is damaged or traversed by the sliding between the traverse drum 52 and the package 100. Occurs, which leads to a decrease in package quality. Therefore, in the following, by controlling the pressure in the working chamber 76 by the brake device 53, the package 100 is appropriately decelerated so as not to degrade the package quality as much as possible.

(Serial control of the unit controller when thread breakage occurs)
Hereinafter, a series of controls including a deceleration process of the package 100 by the unit control unit 15 when yarn breakage or the like occurs will be described with reference to FIGS. 8 and 9.

  First, the unit control unit 15 drives the drum drive motor 62 to rotate the traverse drum 52 while the package 100 and the traverse drum 52 are in contact with each other, and winds the yarn Y around the package 100. And The aforementioned low-pressure compressed air is supplied to the working chamber 76 of the brake cylinder 60, and the package 100 is not braked. That is, the peripheral speed of the package 100 and the peripheral speed of the traverse drum 52 are substantially equal. Further, the unit control unit 15 controls the drum drive motor 42 to rotate the yarn storage drum 41 to keep the storage amount of the yarn Y in the yarn storage unit 13 at an appropriate amount. Hereinafter, the yarn winding operation in this state is referred to as a normal winding operation. The peripheral speed of the package 100 and the traverse drum 52 during the normal winding operation is, for example, 1500 m / min.

  FIG. 8 shows a case where the yarn Y is not connected between the yarn supply unit 11 and the yarn storage unit 13 due to occurrence of yarn breakage, yarn cutting, bobbin replacement, etc. during the normal winding operation. As described above, a signal indicating the occurrence of yarn breakage is output from the yarn clearer 36 and is input to the unit controller 15 (S101). At this time, the winding unit 2 of the present embodiment continues the winding of the yarn Y onto the package 100 by pulling the yarn Y from the yarn storage unit 13 while performing a yarn splicing process described later. However, at this time, in order to prevent the yarn Y stored in the yarn storage unit 13 from being depleted, in parallel with the yarn joining process, the package 100 and the traverse drum 52 are decelerated to reduce the yarn winding speed. Processing is performed (S102).

  Details of the deceleration process will be described. When the winding of the yarn Y around the package 100 is continued while performing the yarn joining process, the unit control unit 15 includes the package 100 and the traverse drum 52 so that the yarn Y stored in the yarn storage unit 13 is not depleted. It is necessary to temporarily reduce the winding speed of the yarn Y. Specifically, it is necessary to reduce the peripheral speed of the package 100 and the traverse drum 52 from, for example, 1500 m / min to 300 m / min.

  The unit controller 15 reads the target peripheral speed of the traverse drum 52 and controls the drum drive motor 62 to start decelerating the traverse drum 52. At the same time, the unit controller 15 reads the command pressure at the start of deceleration and outputs the command pressure to the air pressure variable unit 71. The air pressure control unit 83 supplies compressed air to the working chamber 76 based on the input command pressure, and starts decelerating the package 100.

  During the deceleration of the package 100 and the traverse drum 52, the unit controller 15 calculates the difference (slip amount) between the peripheral speed of the package 100 and the peripheral speed of the traverse drum 52 as needed. The circumferential speed of the traverse drum 52 is calculated based on the detection result of the drum rotation speed sensor 63 and the diameter of the traverse drum 52 stored in advance in a ROM or the like. The peripheral speed of the package 100 is controlled based on the detection result of the package rotation speed sensor 61 and the detection result of the drum rotation speed sensor 63. More specifically, when the deceleration is started, the ratio between the detection result of the package rotation speed sensor 61 and the detection result of the drum rotation speed sensor 63 is obtained. At this ratio, it is assumed that the peripheral speed of the package 100 is equal to the peripheral speed of the traverse drum 52, and deceleration control is performed in consideration of the slip amount based on this ratio.

  FIG. 9 is a graph showing an example of a change over time in the pressure of the compressed air supplied to the working chamber 76 after the start of deceleration of the package 100. The pressure P0 at the initial stage, that is, before the start of deceleration, is the low pressure described above. The pressure after starting the deceleration process becomes higher than P0. During the deceleration process, the unit control unit 15 sequentially outputs the command pressure to the air pressure control unit 83, and controls the air pressure variable unit 71 as needed so that the slip amount falls within a predetermined range. That is, if the package 100 is excessively decelerated, the command pressure is decreased to reduce the deceleration, and if the package 100 is not sufficiently decelerated, the command pressure is increased to increase the deceleration. Since the pressure is adjusted by the air pressure variable unit 71 to an arbitrary pressure equal to or lower than Pmax, such control can be performed.

  The magnitude of the command pressure can also vary depending on the yarn amount of the package 100. When the package 100 is light, if the braking force by the brake device 53 is too large, the package 100 may be decelerated excessively. As described above, the unit controller 15 outputs the command pressure so that the slip amount falls within a predetermined range. For this reason, when the package 100 is light, the command pressure is reduced as a whole (see FIG. 9A). On the contrary, when the package 100 is heavy, the instruction pressure increases as a whole (see FIG. 9B). Based on the command pressure, the air pressure control unit 83 changes the pressure so that the braking force acting on the package 100 decreases as the yarn amount decreases.

  While performing the slip amount control as described above, the unit control unit 15 determines whether or not the winding speed of the yarn Y around the package 100 has reached the target value. If the peripheral speed of the package 100 has reached the target value, the unit controller 15 maintains the peripheral speed. If the peripheral speed of the package 100 has not reached the target value, the deceleration process is continued.

  If the yarn Y in the yarn storage unit 13 is expected to be depleted even if the deceleration process is performed, the unit control unit 15 controls the brake device 53 and the drum drive motor 62 to control the package 100. And traverse drum 52 are stopped.

  In parallel with the above deceleration process, the unit controller 15 performs a yarn joining process. The unit controller 15 controls the drum drive motor 42 to stop the yarn storage drum 41. Thereafter, as described above, the unit controller 15 guides the lower yarn Y1 and the upper yarn Y2 to the yarn joining device 33 and controls the yarn joining device 33 to perform yarn joining. During this yarn splicing process, the unit controller 15 drives the drum drive motor 62 to rotate the traverse drum 52 and the package 100, pulls the yarn Y from the yarn storage unit 13, and supplies it to the package 100. Continue winding the yarn Y. However, at this time, since the yarn storage drum 41 is stopped, the storage amount of the yarn Y decreases.

  Next, the unit controller 15 controls the drum drive motor 42 to rotate the yarn storage drum 41 and resumes the storage of the yarn Y in the yarn storage unit 13. In order to increase the yarn Y of the reduced yarn storage unit 13 as quickly as possible, the unit control unit 15 accelerates the yarn storage drum 41 and rotates it faster than the rotation speed during the normal winding operation (S103). Finally, the unit controller 15 controls the drum drive motor 62 to accelerate the traverse drum 52, and returns the winding speed of the yarn Y to the speed during the normal winding operation (S104). At that time, the rotational speed of the yarn storage drum 41 is also returned to the rotational speed during the normal winding operation.

  As described above, in the present invention, during the deceleration of the package 100, the pressure of the compressed air supplied to the working chamber 76 can be adjusted at any time, and the braking force acting on the package 100 can be changed at any time. . For this reason, when the package 100 and the traverse drum 52 are decelerated from the state in which the package 100 and the traverse drum 52 are in contact with each other and the yarn is connected and the yarn Y is being wound, the traverse drum 52 can be operated with maximum efficiency. The circumferential speed difference between the package 100 and the traverse drum 52 can be reduced by causing the package 100 to follow while decelerating. Therefore, problems such as traversing and thread breakage can be prevented.

  Further, when the yarn is not connected between the yarn supply unit 11 and the yarn storage unit 13 due to yarn breakage or the like, the yarn is stored in the yarn storage unit 13 while the yarn joining is performed by the yarn joining device 33. The formation of the package 100 is continued by pulling out the warped yarn Y. In this case, when the package is decelerated so that the yarn stored in the yarn storage unit 13 is not depleted in a state where the yarn is connected between the yarn storage unit 13 and the package 100, the peripheral speed and the traverse of the package 100 are traversed. When the difference from the peripheral speed of the drum 52 becomes large, there is a risk that a traverse, a surface disorder of the package, or the like occurs. In the present invention, the pressure of the compressed air supplied to the working chamber 76 can be adjusted to any pressure at any time during the deceleration of the package 100, and the braking force acting on the package 100 can be changed at any time. The difference in speed can be easily controlled, and those problems can be prevented.

  Further, since the braking force acting on the package 100 can be reduced as the package 100 is lighter, excessive deceleration of the package 100 can be prevented.

  Next, a modified example in which the above embodiment is modified will be described. However, components having the same configuration as in the above embodiment are given the same reference numerals and description thereof is omitted as appropriate.

(1) The configuration of the brake device may be changed. In FIG. 10, the brake device 91 includes an electromagnetic valve 87 (a supply switching valve of the present invention) and a supply control unit 88 instead of the air pressure variable unit 71 of the above embodiment.

  The electromagnetic valve 87 is a normally closed three-way electromagnetic valve. The electromagnetic valve 87 is disposed between the electromagnetic valve 81 of the air pressure variable unit 71 and the working chamber 76. The supply port side of the electromagnetic valve 87 is connected to the outlet side of the electromagnetic valve 81 and the inlet side of the electromagnetic valve 82. The exhaust port side of the solenoid valve 87 is connected to the exhaust port 85. The cylinder port side of the solenoid valve 87 is connected to the working chamber 76. The supply control unit 88 controls ON / OFF switching (opening / closing) of the electromagnetic valve 87. The timing data for opening and closing the electromagnetic valve 87 is output from the unit controller 15, for example. When the solenoid valve 87 is energized (ON state), the supply port side of the solenoid valve 87 is opened and the exhaust port side is closed, and compressed air flows as shown by the solid line arrow in FIG. Compressed air is supplied. When energization of the solenoid valve 87 is stopped (OFF state), the supply port side of the solenoid valve 87 is closed and the exhaust port side is opened, and compressed air flows as shown by the broken line arrow in FIG. Compressed air is discharged to the port 85.

  The time change of the pressure of the compressed air supplied to the working chamber 76 during the deceleration process will be described with reference to FIG. A plurality of types of setting data of timing for switching opening and closing of the electromagnetic valve 87 per certain time are stored in the ROM or the like of the unit controller 15. As an example, in FIG. 11A, the ON state and the OFF state are alternately repeated twice during a certain time A, and the ON time (open time of the present invention) is OFF time (closed time of the present invention). A graph of data having a shorter setting is shown. Similarly, FIG. 11B is a graph of setting data whose ON time is longer than the OFF time. When the setting data as shown in FIG. 11B is read, the ON time is longer than that in FIG. The time A is a short time such as 0.1 seconds. Of course, the setting data is not limited to that described above. For example, the ON time and the OFF time may be equal. The first ON time and the second ON time may be different. The number of repetitions need not be two.

  During the deceleration of the package 100 and the traverse drum 52, the unit control unit 15 calculates the peripheral speed difference between the two at any time, and based on the peripheral speed difference at that time, the timing for switching ON / OFF of the electromagnetic valve 87 is determined. Read the optimal setting data. For example, as shown in FIG. 11C, it is assumed that three types of setting data having different ratios of ON time and OFF time are sequentially read. When the setting data is sequentially input from the unit control unit 15 to the supply control unit 88, the supply control unit 88 alternately opens and closes the electromagnetic valve 87 while changing the ON time and the OFF time based on the setting data. Repeatedly. As a result, the pressure changes with time at a pressure equal to or lower than the pressure Pmax as shown in FIG. Therefore, although it is not a fine pressure adjustment as in the case where the air pressure variable unit 71 is used, unlike the conventional pumping brake control, feedback based on the peripheral speed difference is performed during the deceleration of the package 100, and the pressure is arbitrarily set. The size can be adjusted at any time. Therefore, the braking force acting on the package 100 can be changed at any time.

(2) You may add the structure of a brake device. In FIG. 12, the brake device 92 further includes the above-described electromagnetic valve 87 disposed between the electromagnetic valve 81 of the air pressure variable unit 71 and the working chamber 76, and a supply control unit 88. As for the flow of compressed air by the air pressure variable unit 71, as in FIG. 5 described above, the solid arrow indicates supply, and the broken arrow indicates exhaust. As the flow of compressed air by opening and closing of the electromagnetic valve 87, a solid arrow represents supply, a broken line drawn and a hatched arrow represents exhaust.

  The time change of the pressure of the compressed air supplied to the working chamber 76 during the deceleration process will be described with reference to FIG. FIG. 13A is a graph showing the time change of the pressure of the compressed air supplied from the air pressure variable unit 71 (the pressure of the compressed air between the electromagnetic valve 81 and the electromagnetic valve 87). FIG. 13B is a graph showing setting data of ON / OFF switching timing of the electromagnetic valve 87. The ratio between the ON time and the OFF time and the change thereof are the same as those shown in FIG. That is, also in this modification, the ON time and OFF time of the electromagnetic valve 87 are fed back based on the peripheral speed difference between the package 100 and the traverse drum 52. When the setting data is sequentially input from the unit controller 15 to the supply controller 88, the supply controller 88 opens and closes the electromagnetic valve 87 while changing the ON time and the OFF time based on the setting data. Repeat alternately.

  FIG. 13C is a graph showing the result of time change of the pressure of the compressed air supplied to the working chamber 76 through the electromagnetic valve 87. An alternate long and two short dashes line indicates the pressure of the compressed air supplied from the air pressure variable unit 71 in FIG. By opening and closing the electromagnetic valve 87 alternately and repeatedly, the pressure of the compressed air in the working chamber 76 becomes lower than the pressure of the compressed air supplied from the air pressure variable unit 71. Further, since the ON time and OFF time of the electromagnetic valve 87 change, the pressure of the compressed air supplied from the air pressure variable portion 71 to the working chamber 76 can be adjusted. Therefore, the braking force acting on the package 100 can be changed more finely.

  In this modification, the ratio between the ON time and the OFF time of the electromagnetic valve 87 may be constant during the deceleration process. Further, the electromagnetic valve 87 may be a two-way electromagnetic valve that switches between supply and shutoff of compressed air to the working chamber 76.

(3) Another brake device configuration may be used. In FIG. 14, the brake device 93 includes an air pressure switching unit 94 instead of the air pressure variable portion 71 of the brake device 92 shown in FIG. The air pressure switching unit 94 is connected to the supply port 84 described above. The air pressure switching unit 94 is also connected to a supply port 95 connected to a compressed air supply source having a pressure lower than that of a compressed air supply source connected to the supply port 84. The air pressure switching unit 94 can switch which of the relatively high pressure compressed air from the supply port 84 and the relatively low pressure compressed air from the supply port 95 is supplied to the solenoid valve 87 side. It has become. The air pressure switching unit 94 is controlled by the unit controller 15. In FIG. 14, when compressed air is supplied from the supply port 84, the compressed air flows as indicated by solid arrows. Further, when compressed air is supplied from the supply port 95, the compressed air flows as shown by a solid line and indicated by a hatched arrow.

  In the above configuration, for example, when it is desired to apply a weak braking force to the package 100 such as decelerating the package 100 with a small winding diameter, the unit controller 15 controls the air pressure switching unit 94 to compress from the supply port 95. Switching is performed so that air is supplied. In addition, as described above, the supply control unit 88 controls the electromagnetic valve 87 to repeatedly turn ON / OFF the electromagnetic valve 87 alternately. Thus, although the pressure adjustment is not as fine as when the air pressure variable portion 71 is used, the pressure is finely adjusted as compared with the case where only the electromagnetic valve 87 is used as in the modified example (1). Can do. Note that the number of supply ports is not limited to two, and if the number is increased, finer pressure adjustment is possible.

(4) In the brake devices 91 to 93, only one of the ON time and OFF time of the electromagnetic valve 87 may be changed.

(5) The brake devices 53, 91, 92, 93 may not have the pressure gauge 86. For example, a table indicating the relationship between the command pressure and the opening / closing timing of each solenoid valve may be stored in advance in the ROM or the like of the unit controller 15. Alternatively, a program for calculating the opening / closing timing from the command pressure may be incorporated in the unit controller 15 in advance.

(6) The command pressure may be input to the air pressure control unit 83 from outside the unit control unit 15 such as the control device 4. Alternatively, the operator may input the indicated pressure.

(7) The air pressure variable unit 71 may not include the air pressure control unit 83, and the unit control unit 15 may control the air pressure variable unit 71 as the air pressure control unit. The brake devices 91 to 93 may not include the supply control unit 88, and the unit control unit 15 may control the electromagnetic valve 87 as the supply control unit.

(8) During the deceleration process, the unit control unit 15 controls the drum drive motor 62 and controls the circumferential speed of the traverse drum 52 so that the slip amount is within a predetermined range. You may make adjustments.

(9) The package forming unit 12 may have a lift-up cylinder (not shown) that rotates the cradle 51. That is, when the package 100 and the traverse drum 52 need to be suddenly stopped, the cradle 51 may be rotated so that the package 100 can be separated from the traverse drum 52.

(10) A rotation angle sensor (not shown) that detects the rotation angle of the cradle arms 51 a and 51 b and outputs the rotation angle to the unit control unit 15 may be attached to the shaft 54 of the cradle 51. That is, since the detection result of the rotation angle sensor is changed by the rotation of the cradle arms 51a and 51b according to the package diameter, the unit control unit 15 includes the detection result of the rotation angle sensor and the package rotation speed sensor 61. Based on the above, the peripheral speed and the yarn amount of the package 100 may be calculated.

(11) The winding unit may not include the yarn storage unit 13. In FIG. 15, a winding unit 10 that does not include the yarn storage unit 13 is shown. The winding unit 10 is configured to guide the yarn Y to the yarn joining device 33, and includes an upper yarn catching guide member 96 having a mouse for sucking and catching the upper yarn Y2 on the package forming portion 12 side, and the yarn feeding portion 11. A lower thread catching guide member 97 having a suction port for sucking and catching the lower thread Y1 on the side is provided. At the time of yarn joining, the lower yarn Y1 and the upper yarn Y2 are guided to the yarn joining device 33 by the upper yarn catching guide member 96 and the lower yarn catching guide member 97, respectively.

  At the time of yarn joining in the winding unit 10, the unit controller 15 controls the lift-up cylinder described in the modified example of (9) above to rotate the cradle 51 and separate the package 100 from the traverse drum 52. Thereafter, the package 100 and the traverse drum 52 are stopped. Thus, in the winding unit 10, the package 100 is not decelerated as in the above embodiment at the time of piecing. However, the package 100 and the traverse drum 52 may be decelerated while maintaining the state where the yarn Y is being wound, for example, at the timing when the package 100 is fully wound. In such a case, since the braking force acting on the package 100 can be freely adjusted, the amount of slip can be reduced. Therefore, problems such as traversing and thread breakage can be prevented.

(11) The package 100 may be rotated by a configuration other than the traverse drum 52. For example, the package 100 may be driven to rotate by rotating a contact roller having no traverse groove, and the yarn Y may be traversed by a traverse guide independent of the contact roller.

(12) The yarn joining device 33 is not limited to a compressed air type, and may be a mechanical type, for example.

(13) Fluid other than compressed air, such as oil, may be supplied to the working chamber 76.

(14) The take-up bobbin Bm is not limited to a cone type but may be a cheese type (cylindrical).

(15) The present invention is not limited to the winding unit 2 and may be applied to a yarn winding device such as a spinning unit (for example, see JP2013-253353A). In this case, an air spinning device or the like that generates spun yarn corresponds to the yarn supplying unit 11.

DESCRIPTION OF SYMBOLS 2 Winding unit 11 Yarn supply part 13 Yarn storage part 15 Unit control part 33 Yarn splicing device 52 Traverse drum 53 Brake device 56 Bobbin holder 58 Holder main body 61 Package rotational speed sensor 62 Drum drive motor 63 Drum rotational speed sensor 71 Air pressure variable part 75 Brake shoe 76 Working chamber 100 Package Bm Winding bobbin Y Thread

Claims (10)

A yarn winding device that forms a package by winding a yarn from a yarn supplying unit capable of supplying a yarn to a winding tube,
A brake having a brake part that brakes rotation of the package, an operation chamber that operates the brake part by the pressure of fluid inside the package, and a fluid pressure variable part that changes the pressure of the fluid supplied to the operation chamber Equipped with equipment,
The fluid pressure variable part is:
A first valve disposed between a fluid supply port connected to a fluid supply source and the working chamber; a second valve disposed between the working chamber and a fluid discharge port; the first valve; And a fluid pressure control unit that opens and closes the two valves independently. The brake device is
A pressure detection unit for detecting the pressure of the fluid supplied from the fluid pressure variable unit to the working chamber;
The fluid pressure control unit controls the first valve and the second valve so that the pressure of the fluid supplied to the working chamber becomes an instruction pressure based on a detection value of the pressure detection unit. The yarn winding device according to claim 1.   The yarn winding device according to claim 2, wherein the command pressure is sequentially input from the outside to the fluid pressure control unit. The brake device is
The apparatus further comprises: a supply switching valve disposed between the first valve of the fluid pressure variable unit and the working chamber; and a supply control unit that controls opening and closing of the supply switching valve. The yarn winding device according to any one of 1 to 3. The supply control unit
The yarn winding device according to claim 4, wherein the supply switching valve is alternately opened and closed repeatedly. The supply control unit
The yarn winding device according to claim 5, wherein at least one of an opening time and a closing time of the supply switching valve is changed. A yarn winding device that forms a package by winding a yarn from a yarn supplying section that supplies yarn to a winding tube,
A brake portion that brakes rotation of the package, an operation chamber that operates the brake portion by a fluid pressure inside the package, a supply switching valve that is disposed between the fluid supply port connected to a fluid supply source and the operation chamber; A supply control unit that controls opening and closing of the supply switching valve,
The supply control unit
A yarn winding device, wherein the supply switching valve is repeatedly opened and closed alternately while changing at least one of an opening time and a closing time of the supply switching valve. A contact roller for rotating the package by rotating in contact with the package;
A roller driving unit that rotationally drives the contact roller;
A package rotation speed detector for detecting the rotation speed of the package;
A contact roller rotation speed detector for detecting the rotation speed of the contact roller;
A winding control unit that controls the brake device and the roller driving unit;
The winding control unit
When the package is decelerated while maintaining the state where the package and the contact roller are in contact with each other and winding the yarn on the package, the detection result of the package rotation speed detection unit and the contact roller rotation speed detection The brake device and the roller driving unit are controlled based on a detection result of the part so that a difference between a peripheral speed of the package and a peripheral speed of the contact roller is within a predetermined range. Item 8. The yarn winding device according to any one of Items 1 to 7. A yarn storage unit that is disposed between the yarn supply unit and the package and stores the yarn supplied from the yarn supply unit;
The yarn end disposed between the yarn supplying portion and the yarn accumulating portion, and when the yarn is not connected between the yarn supplying portion and the yarn accumulating portion, the yarn end on the yarn supplying portion side and the yarn accumulating portion side A yarn splicing device that connects the yarn ends of
9. The yarn winding according to claim 8, wherein the winding control unit controls the brake device and the roller driving unit to decelerate the package and the contact roller at the time of yarn joining by the yarn joining device. Taking device.   The said brake device changes the pressure of the fluid supplied to the said operation chamber so that the braking force which acts on the said package may become small, so that the thread | yarn quantity of the said package is small. The yarn winding device according to any one of the above.

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