JP2008162712A - Doffing device and textile machine having same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a doffing device such that, when a winding tube contained in a winding tube stocker is held by a chucker, the position of the holding is kept constant and a textile machine having the doffing device. <P>SOLUTION: This doffing device 6 comprises a winding tube position restraining means 60 having a pressing member 60c supported on a separator 69 for escaping the winding tubes 9 other than the held one when the winding tube 9 is held by the chucker and pressing one end of the held winding tube 9 against the positioning member 65a of the winding tube stocker 65 by bringing it against the other end of the winding tube 9 when the winding tube escaping operation is performed by the separator 69. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a doffing device provided in an automatic winder or the like, and more particularly to a device for regulating a winding tube stored in a winding tube stocker to a predetermined position.

As shown in FIG. 2, the doffing device 6 provided in an automatic winder or the like is provided so as to be able to run along the direction in which the winding device 2 is arranged, and the winding package is fully wound by opening the cradle arm 21. P is rolled backward and placed on the conveying device 12. Thereafter, the take-up tube 9 stored in the box-like take-up tube stocker 65 is grasped by the chucker 66 and supported by the cradle arm 21, and the yarn Y of the yarn feeding bobbin B is loaded on the take-up tube 9. The winding is resumed by winding (see, for example, Patent Document 1).

By the way, a winding tube used for an automatic winder or the like may vary in axial length by about 5 mm due to manufacturing variations. In addition, when the type of the take-up tube is changed for each yarn type to be taken up, a take-up tube having an axial length of about 5 mm may be used before and after the change.

Therefore, the distance between the both side walls of the take-up pipe stocker facing the axial end of the take-up pipe is generally large enough to accommodate all take-up pipes with different axial lengths. It was the target.
JP-A-10-297826

However, if the distance between both side walls of the take-up tube stocker is larger than that of the take-up tube, the take-up tube having a short axial length can be positioned freely between both side walls of the take-up tube stocker. Thus, the gripping position of the take-up tube by the chucker that performs a constant rotational movement varies in the axial direction. If the gripping position by the chucker is deviated, when the take-up tube is attached to the cradle arm, the take-up tube does not come to the proper attachment position with respect to the cradle arm, and an attachment error may occur.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make the gripping position constant when gripping a winding tube stored in the winding tube stocker with a chucker. An object of the present invention is to provide a doffing apparatus and a textile machine including the doffing apparatus.

In order to solve the above-mentioned problems, the present invention is (1) provided so as to be able to travel between a large number of juxtaposed fiber devices, gripping a take-up tube from a take-up tube stocker provided in the fiber device, A chucker to be mounted on a winding tube support member of a winding unit in the fiber apparatus, and when the winding tube is gripped by the chucker, the winding tube other than the winding tube to be gripped is retracted in the winding tube stocker. A doffing device comprising a separator to be brought into contact with one end of a winding tube supported by the separator and gripped by a retracting operation of the winding tube by the separator According to the present invention, there is provided a doffing device including a winding tube position regulating means provided with a pressing member that presses the other end of the winding tube against the positioning member of the winding tube stocker. It is.

Further, the present invention is the above configuration, wherein (2) the separator is configured to perform the retracting operation of the take-up tube by rotating around the support shaft, and the take-up tube position regulating means includes the support tube A first shaft that extends substantially parallel to the shaft and is rotatably supported by the separator; a first shaft that protrudes in a radial direction from one end of the first shaft; and the pressing member is attached to the protruding end. Further, when the pressing member abuts on one side end of the gripped winding tube, the pressing member of the winding tube gripped by the component force of its own gravity. The doffing device is characterized in that the abutting surface is inclined so that the other side end can be pressed against the positioning member.

Moreover, this invention provides the doffing apparatus characterized by the above-mentioned. WHEREIN: (3) The said separator interlock | cooperates with the said chucker via a link mechanism.

The present invention also provides (4) a textile machine comprising any one of the above doffing devices.

In the doffing device of the present invention configured as described above, when the separator retracts the winding tube that is not gripped by the chucker upward, the winding tube position is located at one end of the winding tube that is gripped. The pressing member of the restricting means comes into contact. As a result, before the gripping winding tube is gripped, the other side end is pressed against the positioning member of the winding tube stocker by the pressing member. Therefore, according to the doffing device of the present invention and the textile machine equipped with the doffing device, the position of the take-up tube when gripped is always constant, so that the chucker always attaches the take-up tube to the cradle arm in a proper mounting position. It can be transported to and can prevent installation mistakes.

Hereinafter, an automatic winder to which a doffing apparatus according to the present invention is applied will be described with reference to the drawings.
FIG. 1 is a front view showing an overall configuration of an automatic winder as an example of a textile machine to which a doffing device according to the present invention is applied, and FIG. 2 is a side view showing a winding device and a doffing device in the automatic winder of FIG. 3 is a front view showing the doffing device of FIG. 2, FIG. 4 is a perspective view showing the winding tube stocker, separator, and winding tube position regulating means in the doffing device of FIG. 2, and FIG. 5 is the doffing of FIG. FIG. 6 is a schematic side view showing a chucker and a separator in the apparatus, and FIG. 6 is a schematic view showing an operation of the winding tube position regulating means of FIG.

First, the overall configuration of the automatic winder 1 according to the present embodiment will be described.
As shown in FIG. 1 or 2, the automatic winder 1 mainly includes a plurality of winding devices (fiber devices) 2, and a yarn feeding bobbin supplying device that supplies a yarn feeding bobbin B to each winding device 2. 3, a doffing device 6 that performs a doffing operation for each winding device 2, a transport device 12 that transports the winding package P doffed by the doffing device 6, each winding device 2 and the doffing device 6, etc. And a machine base control device 8 for controlling the machine.

As shown in FIG. 2, the winding device 2 winds a yarn Y unwound from a plurality or one yarn feeding bobbin B around a winding tube 9 to form one winding package P. is there. A cradle arm (winding tube support member) 21 that rotatably supports the winding tube 9 and a drum 22 that rotates the winding tube 9 supported by the cradle arm 21 are provided on the upper portion of the winding device 2. Is provided.

As shown in FIG. 2, the cradle arm 21 includes a winding position (a position indicated by a solid line in FIG. 2) where the winding package P (winding tube 9 at the start of winding) contacts the drum 22 and a doffing device 6. Thus, a removal position (position indicated by a two-dot chain line in FIG. 2) where the winding package P is removed can be taken. Further, as shown in FIG. 3, the cradle arm 21 has take-up tube holders 23 and 23 for sandwiching the take-up tube 9, and one side thereof is swingable in the axial direction of the drum 22. The winding tube 9 is detachable.

As shown in FIG. 2, the drum 22 is connected to a drive motor 25 controlled by a unit controller 24, and is rotated at a high speed or a low speed.

As shown in FIG. 2, the unit controller 24 is communicably connected to the machine base control device 8 and receives the value of the full rotation speed from the machine base control device 8.
Further, the unit controller 24 is for low-speed rotation for winding the cut yarn Y around the winding package P, low-speed rotation for bunch winding the winding tube 9, and for winding the winding yarn 9 on the winding tube 9. The drum 22 is rotated in the order of high-speed rotation, and the winding of the yarn Y by the winding tube 9 in contact with the drum 22 is controlled.

Further, on the downstream side of the winding device 2 along the yarn path, a yarn joining device 26 that joins the yarn Y, a yarn clearer 27 that has a yarn cutting portion 27a and detects a yarn defect, and a yarn feeding bobbin B A yarn trap 28 (yarn end catching means) for sucking and catching the cut yarn Y on the side, and a suction arm (not shown) for taking the yarn Y from the yarn trap 28 and introducing it to the yarn joining device 26 are provided.

As shown in FIGS. 2 and 3, the doffing device 6 travels above the winding device 2 along the rail 7 disposed on the frame 61, and the winding package P of the winding device 2 is fully wound. In this case, the doffing operation is performed after stopping at a predetermined position. The doffing device 6 guides the yarn gripping device 62 that can extend to the yarn trap 28, the opener 63 that moves and opens and closes the cradle arm 21, and the yarn Y toward the winding tube 9 supported by the cradle arm 21. And a thread lever lever 64.

The thread gripping device 62 extends and contracts the thread cutting and gripping part 62a using an air cylinder, and cuts and grips the thread Y by the thread cutting and gripping part 62a in conjunction with the expansion and contraction. The yarn gripping device 62 is provided at the lower portion of the doffing device 6 so as to be rotatable in the radial direction of the drum 22, and swivels so that the yarn Y is pulled up to the upper side of the drum 22 and interposed between the cradle arms 21. To do.

As shown in FIGS. 2 and 3, the opener 63 of the doffing device 6 has an open lever 63b fixed to a rotating shaft 63a that protrudes in the axial direction of the drum 22 from the side of the doffing device 6, and is open. An open hand 63c that contacts the cradle lever 21a provided on the cradle arm 21 is provided at the tip of the lever 63b.

The open lever 63b is supported swingably in the axial direction of the drum 22 and extends toward the cradle arm 21. The open hand intersects with the turning trajectory of the cradle lever 21a rotating integrally with the cradle arm 21. 63c.
Then, the opener 63 turns the cradle arm 21 supporting the winding package P from the winding position to the removal position by turning in the direction away from the drum 22 with the open hand 63c in contact with the cradle lever 21a. It is designed to move.

Further, the opener 63 is further turned in the direction toward the drum 22 to turn the cradle arm 21 from the outer position to the winding position so that the winding tube 9 is brought into contact with the drum 22. . Further, the opener 63 swings in the axial direction of the drum 22 to open and close the cradle arm 21 via the cradle lever 21a, thereby allowing the full package P to be doffed and the winding tube 9 to be mounted.

The yarn raising lever 64 of the doffing device 6 has a yarn hooking portion on the tip side, and is arranged to be rotatable on the winding tube 9 side on the yarn entering side of the drum 22 as shown in FIG. . The yarn lever 64 is hooked by rotating the yarn Y pulled up by the yarn gripping device 62 toward the winding tube 9, and between the large-diameter end of the winding tube 9 and the winding tube holder 23. In order to pinch, it is designed to pull the yarn together.

Further, as shown in FIG. 2 or 3, the doffing device 6 includes a chucker 66 that holds the winding tube 9 from the winding tube stocker 65 fixed to the frame 61 to the drum 22 by gripping the winding tube 9 with the chuck claws at the tip. When the chucker 66 grips the take-up tube 9, the take-up tube 9 other than the object to be gripped is retracted upward so that the chucker 66 can grip the take-up tube 9 and attach it to the cradle arm 21. And.

As shown in FIG. 4, the separator 69 has claw portions 69b and 69b protruding from the base portion 69a, and rotates around the support shaft 69c while receiving a biasing force by a spring 69e connected to the rear end 69d. It is attached to be able to. The support shaft 69c and the spring 69e are fixed in the doffing device 6.
Before the gripping operation by the chucker 66, the rear end 69d of the separator 69 is, as shown in FIG. 5A, a rear end 68b of the first link arm 68 swung downward about the swing shaft 68c by the cam 67. Pressed downward. Here, the rear end 68b of the first link arm 68 swings upward about the swinging shaft 68c by a spring 68f having one end connected to the protrusion 68g and the other end fixed in the doffing device 6. It is energized in the direction to do. The cam 67 can be rotated by a driving means (not shown). A cam follower 68e is provided at a location where the first link arm 68 and the cam 67 abut.
Further, as shown in FIG. 5A, the front end 68a of the first link arm 68 is connected to the chucker 66 through the second link arm 68d, and the chucker 66 is pulled up to a standing state.

Then, during the gripping operation by the chucker 66, as shown in FIG. 5B, the cam 67 rotates, and the rear end 68b of the first link arm 68 swings upward by the spring 68f. As a result, the rear end 69d of the separator 69 is pulled up by the spring 69e and rotated upward around the support shaft 69c. By this rotation, the separator 69 inserts the tip of the claw portion 69b between the winding tube 9 to be gripped and the other winding tube 9, and winds the winding tube 9 other than the gripping target to the gripping target. It retracts upward so as to be separated from the intake tube 9. At this time, the chucker 66 pivots downward by the front end 68a of the first link arm 68 swinging downward, and grips the winding tube 9 to be gripped.
That is, the separator 69 is connected to the chucker 66 via the first link arm 68 and the second link arm 68d (link mechanism), and the winding tube 9 that is not to be gripped is linked to the chucking operation of the chucker 66. It is designed to be evacuated. Therefore, the separator 69 rotates in conjunction with the operation of the chucker 66 without requiring an independent drive source.

As shown in FIG. 4, the separator 69 further includes a first shaft body 60 a that extends substantially parallel to the support shaft 69 c of the separator 69 and is rotatably supported by the base portion 69 a, and one end of the first shaft body 60 a. And a second shaft body 60b having a pressing member 60c attached to the protruding end of the winding tube position restricting means 60. The second shaft body 60b is bent in a substantially square shape so that the intermediate portion can be placed on the one claw portion 69b of the separator 69, and as the separator 69 rotates upwardly. Similarly, the take-up tube position restricting means 60 can move upward.

When the separator 69 approaches the winding tube 9 so as to retract the winding tube 9 that is not the object to be gripped, the pressing member 60c comes into contact with one end of the winding tube 9 that is the object to be gripped as shown in FIG. 6A. Are arranged as follows. As shown in FIG. 6, the pressing member 60c is arranged so that the contact surface with the winding tube 9 is inclined so as to face the lower side and the winding tube 9 side, and the gravity component of the pressing member 60c. The other end of the winding tube 9 to be grasped is pressed against the side wall (positioning member) 65a of the winding tube stocker 65 by Gh (see FIG. 6B).

Next, in the automatic winder 1 according to the embodiment of the present invention, a series of steps for doffing the winding package P that is full will be described with reference to FIGS.

When the winding package P rotated at high speed by the drum 22 of the winding device 2 is fully wound, the yarn cutting section 27a of the yarn clearer 27 is operated to cut the yarn Y, and the cut yarn feeding bobbin B side The tip of the yarn Y is sucked and captured by the yarn trap 28. Simultaneously with the operation of the winding device 2, the doffing device 6 travels and stops just above the winding package P of the winding device 2 that is full.

When the doffing device 6 stops just above the fully wound winding package P, the unit controller 24 drives the drive motor 25 to rotate the drum 22 at a low speed, thereby cutting the wound winding package P. The side yarn Y is wound around the winding package P. When the predetermined time has elapsed and the cut yarn Y is wound on the winding package P, the unit controller 24 stops driving the driving motor 25 and stops the rotation of the drum 22.

After winding the cut yarn Y around the winding package P, the doffing device 6 turns the opener 63 to move the cradle arm 21 supporting the full winding package P from the winding position to the removal position. Let me. Further, by swinging the opener 63 in the axial direction of the drum 22, the cradle arm 21 is opened and the full package P is removed (doffing). Then, the full package P is placed on the transport device 12 via the package guide 29 and is carried to a predetermined place.

After removing the full package P from the cradle arm 21 (doffing), the opener 63 releases the swing and turns toward the drum 22 to move the cradle arm 21 to the winding position. Then, the cradle arm 21 is opened by swinging the opener 63 again. Here, the yarn gripping device 62 of the doffing device 6 is extended to the yarn trap 28, the tip of the yarn Y of the yarn feeding bobbin B sucked and captured by the yarn trap 28 is cut and gripped, and the yarn gripping device 62 is raised. As a result, the yarn Y is pulled up to the upper side passing through the front of the drum 22.

Then, the yarn gripping device 62 that has pulled the yarn Y up to the upper side of the drum 22 is turned toward the cradle arm 21 so that the yarn Y is interposed between the cradle arms 21 and the presence or absence of the yarn Y is detected. The yarn Y is inserted into the yarn clearer 27.

Then, by rotating the yarn lever 64 of the doffing device 6 toward the drum 22, the yarn Y on the yarn entering side of the drum 22 is hooked at the tip, and the yarn Y is guided to the bunch winding position. When the yarn Y is brought close to the bunch winding position, the chucker 66 is rotated toward the drum 22 in order to grip the winding tube 9 at the outlet end of the winding tube stocker 65.

At this time, in conjunction with the chucker 66, the separator 69 rotates downward about the support shaft 69c, and before the chucker 66 grips the winding tube 9 to be gripped, the winding tube 9 that is not to be gripped is moved. Retract upward. This retracting operation is continued until the winding tube 9 gripped by the chucker 66 is attached to the cradle arm 21 and returned to the original position.

Further, with the retracting operation of the winding tube of the separator 69, the pressing member 60c of the winding tube position regulating means 60 is brought into contact with one end of the winding tube 9 to be gripped, so The tube 9 is pressed against the side wall 65a of the winding tube stocker 65.
Even after the pressing member 60c comes into contact with one end of the winding tube 9, the separator 69 is slightly rotated until the retracting operation of the winding tube is completed. Therefore, an excessive force is not applied to the contact portion of the winding tube 9.

After chucking the winding tube 9, the chucker 66 is further rotated toward the drum 22 to bring the gripping winding tube 9 into contact with the drum 22, and wind the cradle arm 21 opened by the opener 63. The winding tube 9 is arranged between the tube holders 23. With the winding tube 9 in contact with the drum 22, the swing of the opener 63 is released, and the large-diameter end and the small-diameter end of the winding tube 9 are rotatably held by the winding tube holder 23 of the cradle arm 21. To do. As a result, the yarn Y is sandwiched between the large-diameter end of the take-up tube 9 and the take-up tube holder 23 so that the bunch can be wound. When the winding tube 9 is gripped by the winding tube holder 23 of the cradle arm 21, the chucker 66 is rotated and retracted toward the doffing device 6, and the gripping of the yarn Y by the yarn gripping device 62 is released.

Thus, when the series of operations from the doff of the full package P to the mounting of the winding tube 9 is completed, the unit controller 24 rotates the drum 22 at a low speed by driving the drive motor 25, and the yarn feeding bobbin The yarn Y from B is bunch wound around the large diameter end of the winding tube 9.

Then, in order to automatically start the main winding of the yarn Y, the unit controller 24 controls the drive motor 25 to rotate the drum 22 at a high speed continuously from the low speed rotation. Thereby, the drum 22 rotates the winding tube 9 at high speed while traversing the yarn Y in the axial direction of the winding tube 6 to automatically start the main winding of the yarn Y. The main winding of the yarn Y is terminated when the constant length winding is completed when the rotation speed of the drum 22 counted by the unit controller 24 reaches the full rotation speed. Then, the doffing device 6 doffs the full-winding package P with respect to the winding device 2 that has become full.

In the doffing device 6 of the present invention configured as described above, when the separator 69 retracts the winding tube 9 that is not the gripping target of the chucker 66 upward, the separator 69 is disposed at one end of the winding tube 9 that is the gripping target. The pressing member 60c of the winding tube position restricting means 60 comes into contact. As a result, before the gripping winding tube 9 is gripped, the other side end is brought into contact with the side wall 65a of the winding tube stocker 65 by the pressing member 60c. Therefore, according to the doffing device 6 of the present invention, since the position of the winding tube 9 is always constant when gripped, the chucker 66 always carries the winding tube 9 to the proper mounting position with respect to the cradle 21. And can prevent mounting mistakes.

Further, since the take-up tube position restricting means 60 is driven by the separator 69, a new driving means is not required and it can be configured simply.

As mentioned above, although embodiment of this invention was described concretely, this invention is not limited to these.
In the above-described embodiment, the end portion of the winding tube 9 to be gripped is pressed against the side wall 65a. However, a positioning member may be separately provided and pressed against the positioning member. Moreover, in the said embodiment, although the direction which presses a winding tube was from the right to the left (refer FIG. 6), you may press from the left to the right direction according to the relationship with an attachment place.

In the above embodiment, the doffing device is applied to an automatic winder having a large number of winding devices arranged side by side. However, the present invention is not limited to this. For example, the invention is applied to a spinning machine having a large number of spinning devices arranged in parallel. It may be a doffing device.

In the above embodiment, the winding tube position restricting means 60 is pivotally attached to avoid the rotation failure of the separator 69 after contacting the pressing member 60c, and excessive force is applied to the contact portion. However, the take-up tube position regulating means 60 is fixed to the separator 69 without being rotatable, and the pressing member 60c is adjusted according to the rotation of the separator 69 after the contact. These may be avoided by using an elastic member that bends moderately. In this case, the pressing member 60c presses the winding tube 9 against the side wall 65a not by gravity but by elastic force.

Further, the take-up tube position restricting means 60 has an actuator such as an air cylinder installed on the first shaft body 60a and connects the second shaft body 60b to the first shaft body 60a so as to be swingable in the pressing direction. It is good also as a structure. In this case, the pressing member 60c can be brought into contact with the winding tube 9 in the pressing direction by the actuator, and the winding tube 9 can be reliably pressed against the side wall 65a.

It is a front view which shows the whole structure of the automatic winder to which the doffing apparatus which concerns on this invention is applied. It is a side view which shows the winding apparatus and doffing apparatus in the automatic winder of FIG. It is a front view which shows the doffing apparatus of FIG. It is a perspective view which shows the winding tube stocker, separator, and winding tube position control means in the doffing apparatus of FIG. It is a schematic side view which shows the chucker and separator in the doffing apparatus of FIG. It is the schematic for demonstrating an effect | action of the winding tube position control means of FIG.

Explanation of symbols

9 Winding pipe 60 Winding pipe position regulating means 60a First shaft body 60b Second shaft body 60c Pressing member 65 Winding pipe stocker 65a Side wall (positioning means)
69 Separator 69a Base portion 69b Claw portion 69c Support shaft 69d (Separator's) rear end 69e Spring

Claims (4)

It is provided to be able to run between a large number of juxtaposed fiber devices, grips the take-up tube from a take-up tube stocker provided in the fiber device, and serves as a take-up tube support member of a take-up portion in the fiber device. A doffing apparatus comprising: a chucker to be mounted; and a separator that retracts a winding tube other than the winding tube to be gripped in the winding tube stocker when gripping the winding tube by the chucker,
The other end of the take-up tube is supported by the separator and brought into contact with one end of the take-up tube that is gripped by the retracting operation of the take-up tube by the separator. A doffing apparatus comprising a take-up tube position restricting means provided with a pressing member to be pressed against a positioning member of the take-up tube stocker. The separator is configured to perform the retracting operation of the winding tube by rotating around a support shaft,
The winding tube position restricting means extends substantially in parallel with the support shaft and is rotatably supported by the separator, and protrudes in a radial direction from one end of the first shaft body. It consists of a second shaft body to which the pressing member is attached at its protruding end, and
When the pressing member comes into contact with one end of the gripped winding tube, the other end of the gripped winding tube can be pressed against the positioning member by a component force of gravity of the pressing member. The doffing device according to claim 1, wherein the contact surface is inclined. The doffing apparatus according to claim 1 or 2, wherein the separator is interlocked with the chucker via a link mechanism. A textile machine comprising the doffing device according to any one of claims 1 to 3.

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