JP2002285435A - Cop-changing apparatus in roving frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cop-changing apparatus in a roving frame capable of shortening the working process in a cop-changing work to the minimum or simplifying it. SOLUTION: A bobbin-holding member 43 has bobbin-hanging parts 44 formed on two sites of cop-changing arms 15a, 15b of a cop-changing apparatus 10, and it is installed on the cop-changing apparatus in a freely rotating manner. In a state where an empty bobbin B1 is hanged on one of the bobbin-hanging parts 44, a full bobbin B2 is hanged on the other bobbin-hanging part 44, and subsequently, the bobbin-holding member 43 is turned. Since a doffing work and an empty bobbin-feeding work can be performed immediately in this state, the reciprocal motion of the cop-changing apparatus 10 to a roving frame 1 becomes once, and thus, the working process in the cop-changing work by the cop-changing apparatus 10, an elevating apparatus 20 and a transferring apparatus 30 can be made minimum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a doffing operation for taking out a full bobbin from a bobbin rail in a roving machine equipped with a top-supported flyer and an empty bobbin supplying operation for arranging an empty bobbin above a bobbin wheel. It relates to a tube replacement device.

[0002]

2. Description of the Related Art Conventionally, a roving machine equipped with a top-supported flyer is provided with a pipe changing device, a lifting device and a lifting device for automating a pipe changing operation including a doffing operation and a subsequent empty bobbin supplying operation. Each transport device is installed. There have been proposed a number of refilling devices aimed at increasing the operating rate of the roving machine by shortening the time required for the refilling operation. For example, Japanese Patent Application Laid-Open No. 12-45137 discloses that two bobbin suspensions are provided at predetermined intervals along the front-rear direction of the pipe replacement arm by two bobbin suspensions arranged at the same pitch as the bobbin wheel pitch. It is a tube replacement device. In the roving machine equipped with the tube changing device, before the roving machine is stopped by the tube changing signal, the empty bobbin conveyed by the conveying device from the previous process or the like in advance is transferred to the back side of the tube changing arm via the elevating device. It is hung below the bobbin. Then, when the refilling operation is started based on the refilling signal, the full bobbin is suspended by the bobbin hanging part on the front side by doffing work, and the full bobbin is received by the transfer device at a position away from the roving machine. Passed. After that, the bobbin supplying operation is performed by moving the refilling device to the roving machine side again.

[0003]

However, in the roving machine equipped with the above-mentioned tube changing device, the tube changing operation is started in a state where the empty bobbin is hung below the bobbin hanging portion on the back side of the tube changing arm. When the full bobbin is taken out from the bobbin rail by doffing work, the full bobbin and the empty bobbin are suspended from the replacement arm. Then, after retracting the refilling device, the empty bobbin supply operation cannot be performed by the empty bobbin at the lower bobbin suspension unless the full bobbin is delivered to the transport device.
During the refilling operation, a work process in which the refilling device reciprocates twice with respect to the roving machine must be provided, which complicates the refilling operation process. Therefore, an object of the present invention is to provide a roving machine tube changing device that minimizes or simplifies the work steps in the tube changing operation.

[0004]

In order to solve the above problems,
The present application is a doffing machine that is installed on the front side of a roving machine equipped with a top-supporting flyer, is provided with a plurality of replacement arms arranged at the same pitch as a bobbin wheel so as to move back and forth, and takes out a full bobbin from a bobbin rail. In a roving machine refilling device for performing an operation and an empty bobbin supplying operation for arranging an empty bobbin above a bobbin wheel, a refilling arm is moved to a refilling position inserted into the roving machine, and in that state, a full bobbin is moved. Was removed from the bobbin wheel, and a pipe replacement mechanism for disposing an empty bobbin above the bobbin wheel from which the full bobbin was removed was provided on the pipe replacement arm.

[0005] Specifically, a plurality of pipe replacement arms installed at the front side of a roving machine equipped with an upper support type flyer and arranged at the same pitch as a bobbin wheel are provided so as to move back and forth,
In a roving machine replacement device for performing a doffing operation for taking out a full bobbin from a bobbin rail and an empty bobbin supply operation for arranging an empty bobbin above a bobbin wheel, two bobbin suspension portions are provided at the tip of each replacement arm. Each of the formed bobbin holding members is horizontally rotatably mounted, the pipe changing arm is moved to a pipe changing position inserted into the roving machine, and a full bobbin is hung on one bobbin hanging portion, and the bobbin holding member is held at that position. A driving mechanism is provided for rotating the bobbin holding member so that the bobbin holding member is rotated so that the positions of the full bobbin and the empty bobbin previously held by the other bobbin hanging portion are switched. The two bobbin hanging portions are provided so as to move at equal intervals on the same circumference by horizontal rotation. In addition, the present reassignment device is provided with a moving table on the front side of a roving machine equipped with a staggered upper-supported flyer so that the moving table approaches and separates, and on the moving table, a replacement arm is arranged at the pitch of the bobbin wheel, A bobbin holding member having two bobbin hanging portions is provided at the roving machine side end of each tube changing arm so as to be horizontally pivotable at an intermediate portion between the two bobbin hanging portions, and one bobbin of each bobbin holding member is provided. When the hanging portions are opposed to the corresponding bobbin wheels, the front and rear pitches of the bobbin hanging portions are configured to match the front and rear pitches of the bobbin wheels, and the movable table includes the bobbin holding member. Is provided with a drive mechanism for rotating the. By 180 degrees. In this case, the bobbin holding member is provided so as to be horizontally pivotable at the center of the two bobbin hanging portions.
It is preferable that the positions of the two bobbin suspension portions of the bobbin holding member are switched by turning the bobbin.

[0006]

Embodiments of the present invention will be described with reference to the drawings. In the roving machine 1 shown in FIG. 1, upper-supported flyers 3 are arranged on a frame 2 in a staggered manner in two front and rear rows, and a bobbin wheel 5 is arranged on a bobbin rail 4 at a position facing the flyer 3. Have been. And frame 2
After the fiber bundle T is drafted by the draft unit 6 provided at the upper part, the drafted fiber bundle T is wound around the bobbin B inserted into the bobbin wheel 5 via the flyer 3. On the front side of the roving machine 1, a pipe changing device 10, a lifting device 20 and a transporting device 30 are respectively installed for automating a pipe changing operation including a doffing operation and a subsequent empty bobbin supplying operation. Lifting device 20 and transport device 30
Is configured in the same manner as, for example, Japanese Patent Application Laid-Open No. 12-45137.

The lifting device 20 and the transport device 30 will be described. A column 21 is erected in front of both longitudinal ends of the roving machine 1, and a column beam 22 is horizontally fixed on upper and lower sides of the column 21 on the opposite side to the roving machine 1. Between the columns 21,
A support bracket 23 extending substantially the entire length of the roving machine 1 is arranged, and guide rollers 24 attached to both ends of the support bracket 23 are engaged with grooves 21 a formed in the respective columns 21 so as to extend in the vertical direction. . At the longitudinal center of the support beam 22, a screw shaft 25 of a ball screw mechanism is rotatably supported via upper and lower bearings 26 so as to extend vertically. At the center of the support bracket 23, a ball nut 27 screwed with the screw shaft 25 is fixed. And support beam 2
2, a drive motor 28 is fixed.
A bevel gear 29b meshing with a bevel gear 29a fixed to the upper end of the screw shaft 25 is fixed to the output shaft 8. Therefore, the lifting device 20 is configured to raise and lower the support bracket 23 along the column 21 by the drive motor 28.

[0008] Two support rails 31 are fixed to the support bracket 23 in parallel with the longitudinal direction of the roving machine 1. Each support rail 31 is provided with a transport device 30 having a bobbin hanger 32 so as to be able to run freely. Transfer device 30
Is a bobbin carrier constituted by connecting a plurality of supports 33 each having a bobbin hanger 32 attached at the same longitudinal pitch P as the bobbin wheel 5. One bobbin carrier 30 includes
Half the number of bobbin hangers 32 of the bobbin wheel 5 arranged in the roving machine 1 (one) is suspended. And
Each of the bobbin transporters 30 is carried into the two support rails 31 while being shifted from each other by １ ／ pitch P, and each of the bobbin hangers 32 of the bobbin transporters 30 in the both support rails 31.
The empty bobbins B1 (B) suspended in the front row correspond to the bobbin wheels 5 arranged in a staggered manner in two front and rear rows. In this way, the support rail 31 fixed to the support bracket 23 that moves up and down along the column 21 by the elevating device 20 becomes the bobbin hanger 32 attached to the bobbin transport body 30.
A bobbin transfer position H1 (FIG. 4) at which the bobbin B can be transferred between the bobbin B and a tube changing mechanism 40 provided in the tube changing device 10 described later, and a transfer rail (not shown) for guiding the bobbin transfer body 30 to the next step or the like. ) And a connectable ascending position H2 (FIG. 1).

[0009] In front of the roving machine 1, a tube changing device 10 is arranged to face the roving machine 1. A plurality of rail members 11 orthogonal to the length of the roving machine 1 are buried in the front passage S of the roving machine 1 along the length of the machine frame 1. The pipe replacement device 10 includes a truck 12 provided for each rail member 11.
A plurality of tube changing arms 15a and 15b provided with a tube changing mechanism 40 are provided on a moving table 14 integrally connected by a support plate 13. Each carriage 12 includes a traveling roller 16 rotatably mounted on the upper surface of the rail member 11, and a pinion member 17 that meshes with a rack 11 a provided in parallel with the rail member 11. The member 17 is attached to a drive shaft 19 connected to a traveling motor 18 fixed to the carriage 12. Therefore, the pipe replacement device 1
0 (moving table 14) is driven to rotate and drive the traveling motor 18, so as to move toward and away from the roving machine 1 in the front-rear direction.

The support plate 13 of the moving table 14 has a structure shown in FIG.
As shown in FIG.
b are arranged at the same longitudinal pitch P facing the bobbin wheel 5. A tube changing mechanism 40 is provided at the tip of each of the tube changing arms 15a and 15b. The pipe replacement mechanism 40 has a support shaft 41 rotatably mounted on the pipe replacement arms 15a and 15b and a sprocket 42 mounted on an upper end and a bobbin holding member 43 mounted on a lower end. When the sprocket 42 is rotated, the bobbin holding member is rotated. 43 rotates horizontally. The bobbin holding member 43 has two bobbin hanging portions 44 formed at both ends of the support shaft 41 to hold the upper portion of the bobbin B or to suspend the flange Ba at the upper portion of the bobbin B. , The two bobbin suspension portions 44
When they are provided on the same circumference and rotated by 180 °, their positions are switched. Also, as shown in FIG.
When one of the bobbin hanging portions 44 of the bobbin holding members 43 attached to the a and 15b is opposed to the corresponding bobbin wheel 5, the front-back pitch of the bobbin hanging portion 44 is equal to the front-back pitch Q of the bobbin wheel 5. Match.

Further, the support plate 13 is provided with a drive mechanism 50 for rotating the tube switching mechanism 40. The drive mechanism 50 is configured to rotate a sprocket 42 attached to each support shaft 41 by a control motor 51, and a plurality of control motors 51 are provided at predetermined intervals along the longitudinal direction of the support plate 13. . Control motor 51
A plurality of sprockets 52 are rotatably provided along the longitudinal direction of the support plate 13 between the and the pipe replacement mechanism 40. As shown in FIG. 3, between the sprocket 53 attached to the output shaft of the control motor 51 and the sprocket 52,
And a sprocket 52a coaxially integrated with the sprocket 52
Each of the chains 54 is wound between the support shaft 41 and the sprocket 42 attached to the support shaft 41. From this, the sprockets 42, 52,
The chain 54 moves in a certain direction via 52a and 53, and the bobbin holding member 43 horizontally rotates in a certain direction.

Each of the devices 10 and 2 configured as described above
The pipe replacement operation of the roving machine 1 in which 0 and 30 are installed on the front side will be described. During operation of the roving machine 1, each support rail 31 arranged at the ascending position H2 by the elevating device 20 includes:
The bobbin transport bodies 30 with the empty bobbins B1 suspended from the transport rails are respectively loaded. Then, as shown in FIG.
The lifting rail 20 moves the support rail 31 to the bobbin delivery position H
When it descends to 1, the traveling motor 18 of the tube switching device 10 disposed at the separation position L0 away from the roving machine 1 is driven, and the tube switching device 10 moves forward. Then, as shown from (Xa) to (Xb) in FIG.
When one of the bobbin hanging portions 44 of the bobbin holding members 43 attached to the a and 15b moves to a position corresponding to the flange Ba of the empty bobbin B1, the traveling motor 18 stops (the stop position of the pipe replacement device 10). Is a standby position L1). Next, as shown in FIG. 5, after lowering the support rail 31 by a predetermined amount by the elevating device 20, the supporting rail 3 is moved by the elevating device 20.
1 is raised to a predetermined position H3. As a result, the flange Ba of the empty bobbin B1 is fitted to the bobbin suspension portion 44 while the support rail 31 is descending by a predetermined amount, and the support rail 31 is lowered.
Is lowered by a predetermined amount, the locked state of the bobbin hanger 32 with respect to the empty bobbin B1 is released. When the support rail 31 is raised, the bobbin hanger 32 is separated from the empty bobbin B1, and the empty bobbin B1 is suspended by the bobbin suspension unit 44. Thereafter, as shown from (Xb) to (Xc) in FIG. 13, the control motor 51 is rotated to rotate the bobbin holding member 44 by 180 °, so that the other bobbin hanging portion 44 is moved to the roving machine 1 side. Move.

Next, as shown in FIG. 6, when the bobbin B of the roving machine 1 becomes full bobbin B2, spinning and winding of the fiber bundle T are stopped, and the upper portion of the full bobbin B2 is The fiber bundle T is automatically cut by descending to a position corresponding to the bobbin suspension portion 44 of the bobbin holding member 43 attached to the replacement arms 15a and 15b. Then, the doffing operation is started based on the tube change signal from the roving machine 1. Tube replacement device 10
The traveling motor 18 is driven to advance the refilling device 10 at the standby position L1 to the roving machine 1 side. As shown in (Xc) to (Xd) in FIG. 15a,
When the bobbin suspending portion 44 of the bobbin holding member 43 attached to the bobbin 15b moves to a position corresponding to the flange Ba of the full bobbin B2, the traveling motor 18 stops (the stop position of the tube changing device is changed to the tube changing position L2). And). Thereafter, as shown in FIG. 7, the bobbin rail 4 descends, the full bobbin B2 is hung by the bobbin hanging unit 44, and the full bobbin B2 is separated from the bobbin wheel 5.

Next, with the pipe replacement device 10 stopped at the pipe replacement position L2, the control motor 51 is driven to drive the bobbin holding member 43 as shown in FIGS. 13 (Xd) to 13 (Xe). Is rotated by 180 °, and the positions of the full bobbin B2 and the empty bobbin B1 suspended in advance by the bobbin suspension unit 44 are switched. As a result, as shown in FIG. 8, the doffing operation for taking out the full bobbin B2 from the bobbin rail 4 and the empty bobbin supplying operation for arranging the empty bobbin B1 above the bobbin wheel 5 from which the full bobbin B2 has been taken out are performed by pipes. That is, the replacement device 10 is moved without approaching and moving away from the roving machine 1. Thereafter, when the bobbin rail 4 moves up and the bobbin wheel 5 is inserted into the bottom of the empty bobbin B1, the empty bobbin B1
Is released from the bobbin hanging portion 44. Then, the driving motor 18 of the refilling device 10 is driven to retreat the refilling device 10 and, as shown in (Xe) to (Xf) in FIG. 13, the full bobbin suspended by the bobbin suspending portion 44. When the tube switching device 10 retreats to a position where B2 does not hinder the operation of the roving machine 1, the roving machine 1 is restarted, and as shown in FIG. The winding of the bundle T is restarted.

Further, as shown in FIGS. 13 (Xf) to (Xg), while the pipe replacement device 10 moves to the standby position L1, the control motor 51 drives the bobbin holding member 43 to rotate 180 °. The bobbin hanging portion 44 where the full bobbin B2 is hung is moved to the roving machine 1 side. And FIG.
As shown in FIG. 0, when the tube replacement device 10 reaches the standby position L1, the traveling motor 18 stops. Thereafter, after the support rail 31 has been lowered by a predetermined amount by the elevating device 20,
As a result, the support rail 31 moves up to a predetermined position. As a result, the bobbin hanger 32 is inserted into the full bobbin B2 while the support rail 31 is descending the predetermined amount, and the support rail 3
1 is lowered to a predetermined position.
Is locked to the full bobbin B2. By slightly raising the support rail 31 from this state, the full bobbin B2 is suspended from the bobbin hanger 32. Thereafter, as shown from (Xg) to (Xh) in FIG. 13, the traveling motor 18 of the refilling device 10 is driven, and the refilling device 10 is retracted to the position shown in FIG. And FIG.
As shown in FIG. 1, when the support rail 31 is raised by the lifting device 20 to the raised position H2, a series of pipe replacement work is completed. Thereafter, before the next tube change signal, the bobbin transport body 30 with the full bobbin B2 suspended is carried out of the transport rail via the support rail 31 to the next step or the like.
The bobbin transporting body 30 with the hanging 1 is carried into the supporting rail 31 via the transporting rail from the previous process or the like (the state of FIG. 12).

Therefore, the replacement arm 15a, 1 of the replacement device 10
5b is provided with a bobbin holding member 43 in which two bobbin hanging portions 44 are formed, and the bobbin holding member 43 is
0, the bobbin holding member 43 performs a doffing operation in a state where the empty bobbin B1 is suspended from the bobbin suspension portion 44 in advance, and the bobbin suspension portion 44 fully fills the other bobbin suspension portion 44. When the bobbin B2 is suspended, the bobbin holding member 43 is rotated to take out the full bobbin B2 from the bobbin rail 4, and to lift the empty bobbin B1 above the bobbin wheel 5 from which the full bobbin B2 is taken out. An empty bobbin supply operation to be arranged can be performed without the proximity and separation movement of the tube changing device 10 to and from the roving machine 1. As a result, at the time of the pipe replacement operation, the pipe replacement apparatus moves forward and backward with respect to the roving machine 1 every two times of the doffing operation and the empty bobbin supply operation.
Since the doffing operation and the empty bobbin supply operation are performed only by one forward and backward movement once performed, the pipe replacement work process can be simplified as compared with the conventional method, and the work time required for the pipe replacement work Can be reduced, the downtime of the roving machine during the pipe replacement operation is shortened, and the operating rate of the roving machine is improved.

Next, a case in which an operator mounts an empty bobbin on the replacement device 10 and removes a full bobbin from the replacement device 10 will be described with reference to FIGS. The same parts as those in the first embodiment are given the same numbers. The length of the rail member 11 is slightly longer than that of the above-described embodiment, and when the tube changing device 10 is at the farthest position L0 farthest from the roving machine 1, the distance between the roving machine 1 and the tube changing device 10 is reduced. , A work area S1 in which the worker M can enter is formed. A single support rail 31 is provided above the pipe replacement device 10.
Are arranged along the roving frame 1, and one end thereof is connected to the creel of the spinning frame. The support rail 31 has a bobbin pitch (2 of the spinning spindle pitch) in the creel of the spinning machine.
In this case, a bobbin carrier 30 having a number of bobbin hangers 32 capable of suspending a roving bobbin B for one roving machine is suspended and guided. By setting the bobbin hanger pitch of the bobbin carrier 30 to the bobbin pitch of the spinning creel in this way, the bobbin carrier 30 with the full bobbin taken out from the roving machine 1 is transported as it is, and directly refined. It can be spun creel.

Next, the procedure of the tube replacement will be described. Replacement device 1
0 is located at the farthest position L0 farthest from the roving machine 1, and the empty bobbins B1 are suspended from the bobbin suspending portions 44 of all the bobbin holding members 43 of the pipe replacement device 10, respectively. The bobbin hanging portion 44 not holding the bobbin is facing the bobbin wheel 5 (FIG. 15).
Description will be made from (a)). At this time, the bobbin transporting body 30 which hangs the empty bobbin B1 for one roving machine is supported by the support rail 31.
Has been introduced. From this state, the tube changing device 10 (the moving table 14) is moved closer to the roving machine 1 to change the tube changing position L.
The bobbin rail 4 descends at 2 and the full bobbin B2
And the bobbin holding member 43 turns at that position by 180 degrees, the positions of the full bobbin B2 and the empty bobbin B1 are exchanged, and the bobbin rail 4 rises to supply the empty bobbin B1 onto the bobbin wheel 5. This is exactly the same as the case of FIG. 13 (FIGS. 15B and 15C). The pipe replacement device 10 is retracted to the separation position L0 to form the work area S1 between the roving machine 1 (FIG. 15D). Next, the worker M enters the work area S1, and removes the empty bobbin B1 from the bobbin transport body 30 above the tube changing device 10 (FIG. 15E).
The bobbin holding member 43 is opposed to the bobbin wheel 5 of the roving machine 1 and is hung on one bobbin hanging portion 44 (FIG. 15F). This operation is performed on all bobbin holding members 43
Do about.

Next, the bobbin holding member 43 is turned 180 degrees to position the full bobbin B2 on the roving machine 1 side (FIG. 15).
(G)) Thereafter, the worker M removes the full bobbin B2 of the bobbin holding member 43 (FIG. 15 (h)), and hangs the bobbin hanger 32 of the bobbin carrier 30 from which the empty bobbin B1 has been removed. When the operation of suspending the full bobbin B2 of all the bobbin holding members 43 on the bobbin carrier 30 is completed, the bobbin carrier 30 is carried toward the spinning machine. In this embodiment, the bobbin holding member 43, in which the empty bobbin B1 is suspended, takes out the full bobbin B2 in front of the roving machine 1 in the same manner as in the fully automatic operation as in the first embodiment. Not only makes one round trip,
In the case of fully automatic operation, there is no pause control at the time of forward movement of the refilling device 10 which was controlled to be stopped at the standby position L1 for transfer to the elevating device, and no pause control at the time of retreat. Operation control becomes the simplest. Empty bobbin B1
Is supplied to the roving machine 1, the tube changing device 10 is set to the full bobbin B2.
The flyer 3 and the tube changing device 1
Needless to say, the spinning is restarted when the interference with zero is eliminated and the spinning is restarted.

In the two embodiments described above, the two bobbin hanging portions 44 are supported so as to rotate horizontally at their centers (ie, the rotation center of the bobbin holding member 43 (the support shaft 41). The two bobbin hanging portions 44 are provided at the same distance from the bobbin holding member 4).
3 may be formed so that the distances L1 and L2 between the center of rotation (support shaft 41) and the bobbin hanging portions 44 on both sides thereof are different (FIG. 16). In this case, after the full bobbin B2 on the bobbin wheel 5 is hung on one bobbin hanging portion 44,
Even when the bobbin B1 is rotated by 180 degrees around the support shaft 41, the other bobbin hanging portion 44 that hangs the empty bobbin B1 is not located directly above the bobbin wheel 5, so that the moving platform Is moved in the front-rear direction, but the revolving time is not affected by operating the turning of the bobbin holding member 43 and the front-rear movement of the movable table in parallel.

[0021]

As described above, according to the present invention, the tube changing arm of the tube changing device is provided with a rotatable tube changing mechanism, and the bobbin holding member of the tube changing mechanism is formed with two bobbin hanging portions. In the state where the empty bobbin and the full bobbin are suspended from the bobbin suspension portion, the refilling mechanism is rotated, so that the refilling operation of the refilling device with respect to the roving machine is performed once during the refilling operation, The work process in the refilling operation including the refilling device can be minimized, and the time from setting an empty bobbin in the refilling device to replacing it with the full bobbin of the roving machine and taking out the full bobbin And the time required for stopping the roving machine during the pipe replacement operation can be shortened.

[Brief description of the drawings]

FIG. 1 is a partially broken schematic view showing a state in which a tube switching device, a lifting device, and a transport device of the present invention are installed in front of a roving machine.

FIG. 2 is an enlarged view taken along the line II-II of FIG. 1 and omits a roving machine and a tube changing device.

FIG. 3 is a partially enlarged view of FIG.

FIG. 4 is a diagram showing an operation of each device by a pipe replacement operation.

FIG. 5 is a diagram illustrating an operation of each device by a pipe replacement operation.

FIG. 6 is a diagram showing an operation of each device by a pipe replacement operation.

FIG. 7 is a diagram showing an operation of each device by a pipe replacement operation.

FIG. 8 is a diagram showing an operation of each device by a pipe replacement operation.

FIG. 9 is a diagram showing an operation of each device by a pipe replacement operation.

FIG. 10 is a diagram illustrating an operation of each device by a pipe replacement operation.

FIG. 11 is a diagram showing an operation of each device by a pipe replacement operation.

FIG. 12 is a diagram showing a state in which a pipe replacement operation has been completed and up to the next pipe replacement signal.

FIG. 13 is a partial schematic diagram viewed from Xa to Xh in FIGS. 4 to 11, and is a diagram illustrating an operation of a bobbin holding member by a pipe replacement operation.

FIG. 14 is an overall side view showing another embodiment.

FIG. 15 is a plan view showing the operation of the bobbin holding member by the pipe replacement operation in FIG. 14, and FIG. 13 of the first embodiment.
FIG.

FIG. 16 is a plan view showing another example of the bobbin holding member.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 roving machine 3 flyer 4 bobbin rail 5 bobbin wheel 10 pipe replacement device 15a pipe replacement arm 15b pipe replacement arm 40 pipe replacement mechanism 43 bobbin holding member 44 bobbin hanging unit 50 drive mechanism L0 separation position L1 standby position L2 pipe replacement position

Claims (5)

[Claims] 1. A plurality of replacement arms installed at the front side of a roving machine equipped with a top-supporting flyer and arranged at the same pitch as a bobbin wheel so as to move back and forth, and take out a full bobbin from a bobbin rail. In the doffing device of the roving machine that performs the doffing operation and the empty bobbin supply operation of arranging the empty bobbin above the bobbin wheel, the replacement arm is moved to the replacement position inserted into the roving machine, and in that state, A tube changing device for a roving machine, wherein a tube changing mechanism for taking out a full bobbin from a bobbin wheel and disposing an empty bobbin above the bobbin wheel from which the full bobbin is taken out is provided on a tube changing arm. 2. A plurality of pipe replacement arms installed at the front side of a roving machine equipped with an upper support flyer and arranged at the same pitch as a bobbin wheel so as to move back and forth, and take out a full bobbin from a bobbin rail. A bobbin holding device in which two bobbin suspension portions are formed at the tip of each tube changing arm is provided with a horizontal bobbin holding member, which performs a doffing operation and an empty bobbin supply operation of disposing an empty bobbin above a bobbin wheel. Each bobbin is rotatably mounted, the bobbin arm is moved to the bobbin position inserted in the roving machine, and a full bobbin is hung on one bobbin hanger,
A drive mechanism for rotating the bobbin holding member so as to rotate the bobbin holding member at that position and exchange the positions of the full bobbin and the empty bobbin previously held by the other bobbin hanging portion. A tube changing device for a roving machine. 3. The pipe changing device for a roving machine according to claim 2, wherein the two bobbin suspension portions are provided so as to move on the same circumference at equal intervals by horizontal rotation. 4. A moving table is provided at the front side of a roving machine equipped with a staggered flyer with a top support type so as to approach and move away from the roving machine, and a replacement arm is arranged on the moving table at a pitch of a bobbin wheel.
A bobbin holding member having two bobbin hanging portions is provided at the roving machine side end of each tube changing arm so as to be horizontally pivotable at an intermediate portion between the two bobbin hanging portions, and one bobbin of each bobbin holding member is provided. When the hanging portions are opposed to the corresponding bobbin wheels, the front and rear pitches of the bobbin hanging portions are configured to match the front and rear pitches of the bobbin wheels, and the movable table includes the bobbin holding member. 18
A roving machine tube changing device, comprising a drive mechanism for turning by 0 degrees. 5. The bobbin holding member is provided so as to be horizontally pivotable at the center of the two bobbin hanging portions, and the bobbin holding member is turned by 180 degrees to rotate the bobbin holding member at two positions. 5. The tube changing device for a roving machine according to claim 4, wherein the positions are changed.