JP3536474B2 - Spinning machine doffing device - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a doffing device for a spinning machine.

[0002]

2. Description of the Related Art Conventionally, in a spinning machine, a doffing device for replacing a full package, in which a predetermined amount of yarn spun by a spinning unit is wound, with an empty bobbin, and spinning when a yarn break occurs. The yarn splicing device that connects the yarns on the unit side and the yarns on the package side was provided on the same machine base.
The machine base is configured to be movable on a rail provided near the spinning machine along the longitudinal direction of the spinning machine including a large number of spinning units arranged side by side. When a doffing or yarn splicing request is made from each unit, the doffing device and the yarn splicing device provided on the machine stand are moved to a predetermined spinning unit each time.

[0003]

However, if the doffing device and the yarn splicing device are provided on the same machine base as described above, the demand for doffing and the demand for yarn splicing are separate spinning units. If the spinning units occur at the same time, only one of the spinning units can meet the request. Therefore, for example, the spinning unit that has made a doffing request while the machine stand moves to the spinning unit that has made a yarn splicing request and the yarn splicing device is performing a predetermined yarn splicing operation There is a problem in that the operating efficiency of the entire spinning machine is reduced as a result.

[0004]

In order to solve the above problems, the invention according to claim 1 is a spinning machine having a large number of spinning units, and a doffing of a winding package formed by each spinning unit. And a doffing device for supplying a new empty bobbin is separate from the yarn splicing device that splices the yarn on the yarn supplying side and the yarn on the winding package side when a yarn breakage occurs. It is characterized in that it moves along a doffing device transport path installed at a position different from the device transport path.
According to the invention of claim 1, since the doffing device and the yarn splicing device move on different transport paths, when a doffing request is made by a predetermined spinning unit, the yarns of other spinning units are sent. The doffing device can perform doffing work with the predetermined spinning unit regardless of the presence or absence of a splicing request.

[0005] Further, according to Claim 2 invention, the upper KidamaAge apparatus,
It is arranged so that it can move along the longitudinal direction of the spinning machine on the outer side of the spinning machine, and the yarn joining device is arranged so as to move along the longitudinal direction of the spinning machine inside the spinning machine. I am trying. According to the invention of claim 2 ,
Since the operation process of doffing by the doffing device is simpler than the operation process of yarn splicing by the yarn splicing device, the doffing device is used in comparison with the case where the yarn splicing device is arranged outside the spinning machine. It is easier to control the movement by disposing it on the outer side of.

According to a third aspect of the present invention, the doffing device transport path is provided with a transport rail provided on the side of the spinning machine along the longitudinal direction of the spinning machine, and above the spinning machine in the longitudinal direction of the spinning machine. The doffing device is characterized in that the doffing device moves on the outer side of the spinning machine while maintaining the engaging relationship with the transport rail and the guide rail. According to the invention of claim 3, when the doffing device is moved in the longitudinal direction of the spinning machine, the doffing device can be moved in a stable state.

Further, in the invention of claim 4, the guide rail is provided with a sending means for sending a doffing request signal at a position corresponding to each spinning unit, and engages with the guide rail of the doffing device. The section is characterized in that it is provided with detection means for detecting a signal from the sending means at a position close to the sending means. According to the invention of claim 4 ,
Since the presence or absence of a doffing request of each spinning unit is detected above the spinning machine, the yarn splicing operation is performed with various arms of the yarn splicing device protruding from the spinning unit during the yarn splicing operation of the yarn splicing device. Even if a sufficient space is secured between the spinning machine and the doffing device so that the doffing device passing beside the spinning unit does not come into contact, the doffing request sent from the sending means is The detection means can be provided at a position where a signal can be accurately detected.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a schematic configuration of a spinning machine in which a doffing device according to an embodiment of the present invention is used. Spinning machine S
Is composed of a large number of spinning units U arranged side by side in the direction orthogonal to the paper surface of FIG. 1, and along the installation direction of the spinning machine S, a conveyor rail 2a on which the doffing device 1 moves,
A guide rail 2b that regulates the swinging of the doffing device 1 in the L direction in FIG. 1 and a yarn joining device transport path 4 on which the yarn joining device 3 moves are provided. Between the doffing device 1 mounted on the transport rail 2a and the spinning machine S, when passing in front of the spinning unit U in which the yarn splicing device 3 performs a predetermined yarn splicing operation,
A predetermined operation space 32 is provided so that various arms (not shown) of the yarn joining device 3 and the doffing device do not come into contact with each other. Further, between the spinning unit U and the doffing apparatus rail 2, there is provided a placing area 5 on which a full package P to be doffed by the doffing apparatus 1 is placed.

The guide rail 2b is attached to the spinning machine S via a support frame 29. The guide rail 2b is provided with a sending means 30 for sending a doffing request signal to a position corresponding to each spinning unit U.
In the present embodiment, an LED is used as the sending means 30 (hereinafter referred to as LED 30). LED
30 is turned on when a full package P is formed in the corresponding spinning unit U, and the turned on light becomes the doffing request signal.

In the doffing device 1, the upper ends of the side frames 1a are connected by a connecting frame 1b, and a supporting arm 26 is attached to each side frame 1a. Each support arm 2
An engaging portion 27 that engages with the guide rail 2b is provided at the tip of
Is installed. The engaging portion 27 includes a pair of driven rollers R2, and the driven rollers R2 are rotatably supported by the shaft portions 28, respectively. The shaft portions 28 are the engaging portions 2 respectively.
It is fixed at 7. Then, the pair of driven rollers 2
By sandwiching the guide rail 2b with 8, the swing of the doffing device 1 in the L direction is restricted.

Further, the engaging portion 27 has a detecting means 31 for detecting the doffing request signal at a position close to and facing the LED 30.
Is installed. In the present embodiment, a light receiving sensor is used as the detecting means 31 (hereinafter referred to as the light receiving sensor 30). The light receiving sensor 31 is provided at three locations along the laying direction of the guide rail 2a (see FIG. 9), and the light receiving sensor 31 located at the head of the running direction 32 of the doffing device 1 detects the light of the LED 30. Then, the running doffing device 1 starts deceleration, and when the next light receiving sensor 31 detects the light of the LED 30, the doffing device 1
Is supposed to stop. When the doffing device 1 stops at a predetermined position, it starts a series of doffing operations to be described later.

FIG. 2 is a front view showing the outline of the configuration of the doffing device according to the embodiment of the present invention when viewed from the spinning unit side. The doffing device 1 is provided with a motor for operating each arm member of the doffing device 1 described below and a motor for moving the doffing device 1 along the doffing device rail 2. (Not shown). First arm member 6
Is an arm member that operates so as to be removed from the cradle 7 when the full package P is doffed.

The second arm member 8 is provided with a chuck mechanism 9 for holding the empty bobbin b at its tip, and is an arm member for mounting the empty bobbin b on the cradle 7 after doffing. The guide arm member 10 includes the first arm member 6
It is a member for temporarily receiving the full package P removed from the cradle 7 and guiding it to the placement area 5. The third arm member 11 is equipped with a suction mechanism 12 for sucking and gripping the yarn spun from the spinning unit U, and for hooking the yarn that has been sucked and gripped onto an empty bobbin mounted on the cradle 7. It is an arm member.

FIG. 3 is a side view showing an outline of the operation of the doffing device 1 when doffing the full package P from the spinning unit U, and FIG. 4 is a view when FIG. 3 is viewed from the spinning unit side. It is a top view. The first arm member 6 on the doffing device 1 side is
The shaft f1 is supported rotatably and slidably in the axial direction of the shaft f1, and a pressing portion 6a for pressing the engaging portion 7a of the cradle 7 is attached to the tip thereof. The guide arm member 10 is rotatably attached to the shaft f2, and a stay 10a on which the full package P is placed is attached to the central portion of the guide arm member 10.

On the other hand, the friction roller R on the side of the spinning unit U is attached to a shaft f3 common to each weight, and the shaft f3 is rotated by a drive motor (not shown) so that it can be freely rotated. Installed on. The traverse guide 21 is also attached to the shaft f4 common to the weights.
Is attached to the frame Fr so as to be slidable in the axial direction thereof by being rotationally driven by a drive motor (not shown).

The cradle 7 is rotatably supported by the shaft f5 and rotates counterclockwise in the drawing as the diameter of the package P increases. The cradle 7 is provided with a pair of cradle arms 7b and 7c, and the cradle arms 7b and 7c are provided with a support portion 7d that supports the package P so that the package P can rotate about its axis.

Of the pair of cradle arms 7b and 7c,
Cradle arm 7b on the side provided with the engaging portion 7a
The joint J1 can rotate in a direction away from the other cradle arm 7c. The lever 14 is attached to the rotation base end side of the cradle 7, and the cradle 7 rotates around the shaft f5 by the drive of a cradle drive mechanism described later.

FIG. 5 is a side view showing the outline of the operation of the doffing device 1 when a new empty bobbin b is mounted on the spinning unit U. The second arm member 8 is rotatably supported by the shaft f6. The chuck mechanism 9 is a joint J2.
The joint J2 is rotatably supported by the arm member 8. The chuck mechanism 9 is rotatably supported by the joint J2. The chuck mechanism 9 is provided with a pair of gripping members 9a, and the empty bobbin b is provided with each gripping member 9a.
Is gripped by. The gripping members 9a are structured so as to be movable in directions toward and away from each other by a drive mechanism (not shown).

FIG. 6 is a schematic view of a mechanism for bringing the empty bobbin b mounted on the spinning unit U into contact with the friction roller R. A link mechanism 15 is provided near the drive unit 22 in which the drive motor M2 and a gear mechanism (not shown) for transmitting the rotational drive of the drive motor M2 to the moving roller R1 are housed. Link mechanism 15
Is a first rod 1 rotatably supported by a shaft f7.
5a and a second rod 15b which is rotatable with respect to the first rod 15a and slides along a guide hole 22a provided in the drive unit 22.

On the other hand, a piston rod 17 of an air cylinder 16 which is a cradle drive mechanism is attached to the tip of a lever 14 attached to the cradle 7, and the piston rod 17 is rotatable with respect to the lever 14. In addition, the piston rod 17 turns on the mechanical valve 18
When turned off, the air cylinder 16 is moved back and forth. When winding onto the package P, the piston rod 17 moves out from the air cylinder 16 according to the diameter of the package P. Spring 23
Is a member for applying an urging force in a direction in which the cradle 7 and the friction roller R come close to each other.

FIG. 7 is a schematic view showing the operation of the doffing device 1 when the yarn is hooked on the empty bobbin attached to the spinning unit U. The third lever 11 is rotatably attached to the shaft f8, and the suction mechanism 12 that sucks and holds the yarn Y by the nozzle portion 12a is rotatably attached to the third lever. When threading the yarn Y onto the empty bobbin b,
The nozzle portion 12a is located near the end of the empty bobbin b held by the cradle 7.

The hook member 24 engages the yarn Y sucked and gripped by the nozzle portion 12a located near the end of the bobbin b with the notch 25 (see FIG. 8) provided at the end of the empty bobbin b. It is a member for moving to a matching position, and is rotatably supported by a shaft portion 24a attached to the suction mechanism 12. On the spinning unit U side, a yarn guide 19 that guides the drawn yarn Y is provided.

Next, based on FIGS. 3 to 7, the doffing device 1
The operation procedure of doffing the full package P and mounting the empty bobbin b according to FIG. When the yarn spun by one of the many spinning units U of the spinning machine is wound around the package P by a predetermined amount, a doffing request signal is sent from the LED 30 of the outer spinning unit U. When the light receiving sensor 31 of the doffing device 1 moving along the transport rail 2a and the guide rail 2b detects the doffing request signal, the doffing device 1 stops at the position corresponding to the spinning unit U.

When the doffing device 1 is stopped in front of the spinning unit U which has made a doffing request, a drive motor (not shown) for rotating each arm member of the doffing device starts to rotate, The 1-arm member 6 rotates in the direction A in FIG. 3 to the position indicated by the alternate long and short dash line. After the end of the rotational movement in the A direction, the first arm member 6 slides in the B direction (see FIG. 4) along the axial direction of the shaft f1. While the first arm member 6 is performing these operations, the guide arm member 10 rotates in the C direction in FIG. 3 to the position indicated by the alternate long and short dash line.

As described above, the first arm member 6 is indicated by B in FIG.
When sliding in the direction, the pressing portion 6a of the first arm member 6 presses the engaging portion 7a of the cradle arm 7b, and the cradle arm 7b rotates in a direction away from the cradle arm 7c with the joint J1 as a base point. By the rotation of the cradle arm 7b, the engagement relationship between the full package P and the support portion 7d on the cradle arm 7b side is canceled,
The full package P is removed from the cradle 7 by its own weight.

When the full package P is removed from the cradle 7, the first arm member 6 slides in the direction opposite to the direction B and rotates in the direction opposite to the direction A, and returns to a predetermined position. . At this time, the full package P removed from the cradle 7 is once placed on the guide arm member 10 at the position indicated by the alternate long and short dash line in FIG. After that, the guide arm member 10 rotates in the direction opposite to the direction C in FIG. 3, and the full package P is guided to the mounting area 5.

When the doffing operation of the full package P as described above is completed, the second arm member 8 holding the empty bobbin b by the chuck mechanism 9 starts rotating in the D direction in FIG. At this time, the joint J2 starts rotating with respect to the second arm member 8 in the E direction in FIG. 4, and the chuck mechanism 9 starts rotating with respect to the joint J2 in the F direction in FIG. The bobbin b gripped by the chuck mechanism 9 is transferred to the position where both ends and the supporting portions 7d of the cradle arms 7b and 7c are close to each other in a state where the bobbin b is held in the chuck mechanism 9 by the rotation of the above respective portions.

When the bobbin b is pushed between the supporting portions 7d of the respective cradle arms 7b and 7c from the above-mentioned state, the cradle arm 7b once rotates in the direction away from the cradle arm 7c with the joint J1 as a base point. . Then, the support portion 7 of each cradle arm 7b, 7c
When both ends of the empty bobbin b are fitted in d, the cradle arm 7b returns to a predetermined position, and the empty bobbin b is rotatably clamped by the cradle arms 7b and 7c.

When the mounting of the empty bobbin b on the cradle 7 is completed, the gripping members 9a of the chuck mechanism 9 are moved away from each other by a drive mechanism (not shown), and the engagement relationship between the chuck mechanism 9 and the empty bobbin b is changed. Will be resolved. In this state, the second arm 8 and the chuck mechanism 9 rotate in the opposite direction to the above case and return to the predetermined position.

When the empty bobbin b is mounted on the cradle 7, the link mechanism 15 shown in FIG. 6 starts to operate.
That is, the first rod 15a starts rotating counterclockwise in FIG. 6, and the second rod 15b moves in the direction G in FIG. 6 along the guide hole 22a. When the second rod 15b moves in the G direction and the tip of the second rod 15b turns on the switch of the mechanical valve 18, the air cylinder 17 operates and the piston rod 17 retracts into the air cylinder 16. The operation of the air cylinder 16 causes the cradle 7 to move to H in FIG.
The empty bobbin b and the friction roller R come into contact with each other.

When the empty bobbin b and the friction roller R come into contact with each other and the empty bobbin b starts rotating, the third arm member 11 starts rotating in the direction I1 in FIG. At this time, the suction mechanism 12 rotatably attached to the third arm member 11 rotates in the K direction in FIG. 7. Then, the nozzle portion 12a of the suction mechanism 12 moves to a position where the yarn Y newly spun from the spinning unit U can be sucked.

When the suction mechanism 12 sucks and holds the yarn Y,
The third arm member 11 moves in the direction I2 in FIG.
Starts rotating again in the direction opposite to the K direction. The nozzle portion 12a of the suction mechanism 12 is located near the end of the empty bobbin b. At this time, the yarn Y is moved in the yarn guide 19
It is pulled out from the spinning unit U via. The pulled-out yarn Y moves to a position where it comes into contact with the end of the empty bobbin b by the rotation of the hook member 24.

When the end portion of the empty bobbin b which is rotating contacts the drawn yarn Y, the yarn Y engages with the notch 24 (see FIG. 8) provided at the end of the empty bobbin b. Then, the empty bobbin b and the friction roller R are caught in the contact position. Then, the wound yarn Y has the shaft f.
4, picked up by the traverse guide 21 sliding in the axial direction,
After that, the yarn Y is wound on the empty bobbin b while traversing.

[0034]

As described above, according to the present invention, the doffing device of the spinning machine is separated from the yarn splicing device, and the doffing device is laid at a position different from the yarn splicing device. Since it is possible to move on the rail for transportation, while one of the many spinning units of the spinning machine is performing yarn splicing work, another spinning unit requests doffing. Even if there is such a doffing, the doffing operation can be promptly performed by the spinning unit that has been requested to doffing.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a spinning machine provided with a doffing device according to an embodiment of the present invention.

FIG. 2 is a plan view showing the outline of the configuration of a doffing device according to the embodiment of the present invention.

FIG. 3 is a side view schematically showing the operation of the doffing device according to the embodiment of the present invention when doffing a full package from a spinning unit.

FIG. 4 is a plan view of FIG. 3 when viewed from the spinning unit side.

FIG. 5 is a side view schematically showing the operation of the doffing device according to the embodiment of the present invention when a new empty bobbin is mounted on the spinning unit.

FIG. 6 is a side view schematically showing the operation of the doffing device according to the embodiment of the present invention when the empty bobbin mounted on the spinning unit is brought into contact with the friction roller.

FIG. 7 is a schematic view showing an operation of the doffing device according to the embodiment of the present invention when the yarn is hooked on the empty bobbin attached to the spinning unit.

FIG. 8 is an enlarged side view of an empty bobbin that contacts the friction roller.

FIG. 9 is a plan view of FIG.

[Explanation of symbols]

1 doffing device 2a Conveyor rail (carrying device conveying path) 2b Guide rail (carrying device transportation path) 3 yarn splicing device 4 Yarn splicing device transport path 27 Engagement part 31 Sending means (LED) 32 Detection means (light receiving sensor) S spinning machine U spinning unit P full package (winding package) b empty bobbin

Claims (4)

(57) [Claims] 1. A spinning machine having a large number of spinning units, wherein a doffing device for doffing a winding package formed by each spinning unit and supplying a new empty bobbin is supplied when a yarn breakage occurs. The yarn splicing device that splices the yarn on the yarn side and the yarn on the winding package side is a separate body, and moves along a doffing device transport path installed at a position different from the yarn splicing device transport path. A doffing device for a spinning machine. 2. The doffing device is arranged outside the spinning machine so as to be movable along the longitudinal direction of the spinning machine, and the yarn splicing device is arranged inside the spinning machine along the longitudinal direction of the spinning machine. The doffing device for a spinning machine according to claim 1, wherein the doffing device is arranged so as to be movable. 3. The doffing device transport path includes a transport rail installed laterally of the spinning machine along the longitudinal direction of the spinning machine, and a guide installed above the spinning machine along the longitudinal direction of the spinning machine. 3. The doffing device for a spinning machine according to claim 1, wherein the doffing device is configured as a rail, and the doffing device moves on the outer side of the spinning machine while maintaining an engaging relationship with the transport rail and the guide rail. apparatus. 4. The guide rail is provided with a sending means for sending a doffing request signal at a position corresponding to each spinning unit, and the sending means is provided at an engaging portion of the doffing device with the guide rail. claims, characterized in that is provided with detection means for detecting a signal from the sending means to close positions in
The doffing device of the spinning machine described in 3 .