JPH0518923B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is directed to doffing a full bobbin wound by a roving frame in which flyers are arranged in a staggered manner in the front and rear rows and transferring it to the spinning creel of a spinning frame. The present invention relates to a method for doffing and conveying full bobbins to be conveyed.

Conventional technology Conventionally, as a device for doffing full bobbins of a roving frame and conveying them to a spinning machine, two rows of full bobbins in front and rear of the roving machine were used, as disclosed in Japanese Patent Application Laid-Open No. 58-41919. Doff the bobbins onto the bobbin holder of the conveyor, attach the full bobbins of the front and rear rows attached to the bobbin holders to one bobbin transporter, move the bobbin transporter to the spinning machine, and doff the front and rear rows of full bobbins. It is known that a fully loaded bobbin is attached to the spinning creel of the spinning machine.

Problems to be Solved by the Invention Generally, in a roving machine in which flyers are arranged in two rows, front and back, in a staggered manner, the roving is wound by the flyers in the front row, and the roving is wound by the flyers in the rear row. The thickness of the rovings differs due to differences in the fiber passage paths of the rovings in the front and rear rows, and normally the rovings in the front row are thinner than the rovings in the rear row, and the difference in thickness is It has become clear that the percentage is more than 1%. On the other hand, in the spinning process using spinning machines, high-quality yarn has become increasingly desirable in recent years, and the goal has become to suppress the variation in the thickness of the finished yarn to 1% or less. . Considering the above-mentioned conventional full bobbin doffing and conveying device against this background, in that conventional device, full bobbins in the front and rear rows of the roving frame are mounted on the same bobbin conveying body, and the same spinning machine Since full bobbins in the front and rear rows are fed to the same spinning creel, variations in the thickness of the roving due to the front and rear rows of the roving machine directly affect the variation in the thickness of the yarn after spinning. give,
There was a problem that the thickness of the thread after spinning became large and the quality of the thread deteriorated.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a bobbin conveyor for the front row for transporting full bobbins in the front row of the roving machine and a full bobbin for the rear row of the roving machine. Prepare two sets of bobbins, one for the rear row and one for the rear row, and doff the full bobbins of the front row and the full bobbins of the rear row separately during doffing. Transfer the full bobbins in the rear row to the rear bobbin transport body, and transfer the front row bobbin transport body to the front spinning creel where the full bobbins in the front row are loaded.
The apparatus is characterized in that the rear row bobbin conveyor is moved to the rear row spinning creel where the full bobbins of the rear row are set, and the full bobbins of the front and rear rows are set on different spinning creels.

Function In the above configuration, the full bobbins in the front and rear rows of the roving machine are doffed separately, and the full bobbins in the front and rear rows are transferred to the bobbin carriers for the front and rear rows, respectively, and the full bobbins in the front and rear rows are doffed. The full bobbins are separated and conveyed to the spinning creels for the front and rear rows, and loaded onto the spinning creels, respectively. By setting the draft amount of the draft mechanism corresponding to each spinning creel to a value suitable for the roving thickness of full bobbins in the front and rear rows, it is possible to reduce variations in the thickness of the spun yarn.

Embodiment In FIGS. 1 and 2, reference numeral 1 denotes a well-known roving frame, on the top rail 2 of which flyers 3 are arranged in two rows, front and rear, in a staggered manner, and below each flyer 3 there is a bobbin rail 4. are arranged to be movable up and down, and a bobbin wheel 5 concentric with each flyer 3 is arranged on this bobbin rail 4, respectively. A conveyor 6 is arranged in parallel in front of the rover 1, and although it is incorporated in the lower part of a doffing machine which will be described later in the drawing, it may be arranged independently of the doffing machine. This conveyor 6
The movable body 7 is provided with an endless movable body extending over substantially the entire length of the bobbin rail 4, and this movable body 7 is rotated in forward and reverse directions by a drive motor 8.
On the circumferential surface of the movable body 7, there are pegs 9 shown as bobbin holders for the front and rear rows that can correspond to the two rows of bobbin wheels 5 of the front and rear rows of the roving frame 1 in the longitudinal direction.
However, the flyers 3 and the bobbin wheels 5 are arranged in a staggered manner. These petsug 9 are rover 1
The fully wound bobbin A can be held in an upright position. In the drawing, in front of Rover 1,
The pitches between the bobbin wheels 5 in the rear row are all equal, and the pitches between the pegs 9 in the front and rear rows of the conveyor 6 are equal to the pitch between the bobbin wheels 5. If the pitch between the bobbin wheels 5 in the front and rear rows of the spinning machine 1 differs between staff members, the pitch between the pegs in the front and rear two rows of the conveyor 6 must match the pitch between the bobbin wheels 5. Good. The spacing between the nine rows of pegs in the front and rear rows is matched with the spacing between the five rows of bobbin wheels in the front and rear rows. Further, in the movable body 7 of the conveyor 6 of this embodiment, empty bobbin pegs 10 for holding empty bobbins (not shown) in an upright state are provided between each of the pegs 9 in the front and rear rows. However, these pegs 10 can also be omitted.

Next, reference numeral 11 denotes a simultaneous pipe changer, which is exemplified as a doffing machine, which is disposed in front of the rover 1;
It is configured so that full bobbins A in the rear row are doffed onto pegs 9 in front of the conveyor 6 and in the rear row, respectively. That is, this simultaneous pipe changing machine 11 is equipped with a pipe changing head 12 extending over substantially the entire length of the bobbin rail 4, and this pipe changing head 12 is connected to several sets of Scott-Rassel type strict straight lines operated by a drive motor 13. It is supported so as to be movable up and down by an elevating mechanism 15 consisting of a movement mechanism 14. The linear motion mechanism 14 includes a sliding shaft 16 supported slidably in the longitudinal direction, a coupling 17 fixed to the sliding shaft 16, and a drive link 18 connected with a pin to the pipe changing head 12. , the driven link 20 is half the length of the drive link 18 and is connected by a pin to the middle of the drive link 18 and the main body 19 of the pipe changer. When the pipe is moved to the right, the pipe changing head 12 is raised. The pipe changing head 12 is connected to the pipe changing bar 2 by a longitudinal movement mechanism 23 consisting of several sets of Scott-Ratssel type strict linear movement mechanisms 22 operated by a drive motor 21.
4 is attached to the roving frame 1 so as to be movable back and forth. The linear motion mechanism 22 is configured in the same manner as the mechanism 14, and when the sliding shaft 25 is slid to the right by the drive motor 21, it moves the tube changing bar 24 forward toward the roving frame 1. It's summery. The pipe changing bar 24 has two types of pipe changing arms 26B and 26, long and short.
F are alternately protruded so as to correspond to the bobbin wheels 5 in the front and rear two rows. These tube change arms 2
The tips of 6F and 26B are formed into a bifurcated shape so as to be able to suspend the flange at the upper end of the full bobbin A, and the protruding length of the tube changing arms 26F and 26B is set at the front of the roving frame 1.
It is set as shown in the figure so that full bobbins A in the rear row can be taken out at the same time. The conveyor 6 and simultaneous tube changer 11 are disclosed in Japanese Unexamined Patent Publication No. 106729/1982, and detailed description thereof will be omitted.

Next, 27 and 28 are bobbin transport bodies for mounting and transporting the full bobbin A after doffing, and they are shown in Figs. 3 to 6.
As shown in the figure, they are movably arranged in parallel above the conveyor 6 by guide devices 29 and 30.
One bobbin conveyor 27 hooks and holds the full bobbin A doffed from above the bobbin wheel 5 in the front row of the roving frame 1 and conveys it, and the other bobbin conveyor 28 hooks and conveys the bobbin A doffed from above the bobbin wheel 5 in the rear row of the roving frame 1. A full bobbin A doffed from above can be hooked, held and transported. Both of the bobbin carriers 27 and 28 are constituted by a bobbin carriage 31 as shown in FIGS. 11 and 12. In this bobbin carriage 31, 32 is a carriage bar,
A plurality of rods are pin-connected by a joint 33 having approximately the same width as the carriage bar 32. A large number of bobbin hangers 34 are attached to the lower surface of these carriage bars 32 at the same pitches as the bobbin hooks in a spinning creel, which will be described later, and a proximal body 35 is attached to the upper surface of the carriage bar 32 to connect each of the bobbin hangers 34 and the like. They are installed in corresponding positions. The number of bobbin hangers 34 of the bobbin carriage 31 is set to 108 or more when the number of flyers of the roving frame 1 is 54 each in the front and rear.
Although it is possible to transport a full bobbin A that has been doffed twice, the present invention is not limited to this. Further, support rods 36 are attached to the upper surface of each of the carry bars 32 near both ends, and the support rods 36
A pair of support rollers 3 are attached to a support body 37 attached to
8 and a pair of guide rollers 39 are each rotatably attached. On the other hand, both the guide devices 29 and 30 are connected to a rail hanging tool 40 as shown in FIGS. 4 and 5.
A guide rail 4 whose cross section and shape are supported by
1, the support roller 38 is supported by the pair of support surfaces 41a of the guide rail 41, and the pair of guide surfaces 41b of the guide rail 41
The guide roller 39 is guided by the guide roller 39. Guide rails 41 of the guide devices 29, 30
As shown in FIG. 7, they are arranged from the roving frame 1 position to each spinning frame 42 position, and the front and rear row bobbin conveyors 27 and 28 are provided with corresponding ones for loading the front and rear row full bobbins A, respectively. The spinning frame 42 can be moved to the position. The above two guide rails 4
1 is connected to a spare rail 44 of each spinning frame 43 of spinning frame group G via a main rail 42, as shown in FIG. Main rail 4 above
A return rail 45 is connected in parallel in the middle of 2, and a roving stopper 46 is attached to the middle of the return rail 45. Further, a standby rail 47 is connected to the return rail 45 in parallel. In addition, in FIG. 7, as shown in FIG. 9, the bobbin carriage 31 is moved to the spare rail 44 provided along the row of bobbin hooks 43a of the spinning creel.
However, the guide may be guided to a creel rail 100 as shown in FIG. 10. A switch 52 as shown in FIG. 8 is provided at each branch point 48 of the preliminary rail 44. These switches 52 move switching pieces 54 operated by air cylinders 53 to guide rollers 39.
It is configured by disposing it in the guide path 55 of
The operation of the air cylinder 53 is controlled by a control device (not shown) such as a computer. The switching piece 54 is rotatably attached to the pivot of the lever 101, and is brought into contact with a stopper 101a of the lever 101 by a spring 102. Note that the switch having the same or substantially the same configuration as the switch 52 is used at each branch point 49a, 49b, 5 of the return rail 45, standby rail 47, and guide rail 41.
0 and 51 are also provided. Note that the above branching point 4
The switches 9a and 49b are switched to guide in one direction only. The spinning frames 43 of the spinning frame group G are divided into a front row spinning frame 43F that loads full bobbins A in the front row of the roving frame 1, and a rear row spinning frame 43B that loads full bobbins A in the rear row of the roving frame 1, and these spinning frames 43F, Corresponding bobbin cartridges 31 for the front and rear rows are fed into the spare rails 44 of 43B by the action of a switch 52, respectively.

Next, on the guide rail 41, there is a fourth transfer device 56 for moving the bobbin carriage 31 above one end (the right end in FIG. 1) of the conveyor 6.
They are attached as shown in FIGS. In this transfer device 56, reference numeral 57 denotes a bracket fixed to the upper surface of the guide rail 41, and swing arms 58, 59 are pivotally attached to the protrusions on both sides of the guide rail 41, respectively.
Bearing boxes 60 and 61 are attached to 9, respectively.
These bearing boxes 60 and 61 are the feed disk 6
2 and 63 shafts 64 and 65 are rotatably supported. Further, a drive motor 66 is attached to one of the bearing boxes 60, and is configured to drive the shaft 64 in forward and reverse rotations. Furthermore, a tension spring 67 is tensioned between the tips of the swing arms 58 and 59, and when the carriage bar 32 is present between the feed disks 62 and 63, the tension spring 67 is used to elastically push both feed disks 62 and 63 against the sides of the carriage bar 32. Press the feed disc 6
When the carriage bar 32 is not present between the bearing boxes 60 and 63, the bearing boxes 60 and 61 are brought into contact with the guide rail 41. A proximity switch 68 is attached to the bracket 57 to detect the object 35 in the vicinity of the bobbin carriage 31. A detection signal from the proximity switch 68 causes the drive motor 66 to stop, and the bobbin carriage 31 is moved to the bobbin hanger 3.
It is designed so that it can be moved intermittently every four mounting bits. Note that the transfer device 56 includes the guide rail 41, the main rail 42, the spare rail 44,
They are attached to the return rail 45 and standby rail 47 at intervals shorter than the length of the bobbin carriage 31, respectively, and their operation is controlled by a control device.

Next, on one end side of the conveyor 6, the full bobbins A of the front and rear rows attached to the pegs 9 and 9 of the conveyor 6 are transferred to the bobbin hangers 34 and 34 of the front and rear row bobbin conveyors 27 and 28, respectively. A transfer device 69 for changing the contents is arranged as shown in FIGS. 3 and 4. This movement change device 69 is composed of a bobbin lifting device 70 and a bobbin transfer device 71. This bobbin lifting device 70 has a sole plate 72 fixed to the floor surface, and a pair of opposing support frames 73, 73 are erected on one end of the sole plate 72, and these frames 73, 73 The upper ends of the two are connected to each other by a stay beam 74. The support frame 73,
Two vertical guide rods 75, 75 are fixedly arranged between the guide rods 75, 73.
A mounting table 76 is attached to 5 so as to be movable up and down.
On the above-mentioned mounting table 76, there are pegs 77F and 77B, which allow full bobbins A to be mounted at positions facing one of the bobbin hangers 34 and 34 of the front and rear row bobbin carriers 27 and 28, respectively, which are indexed and stopped. has been planted. Further, one end of a lifting chain 78 is connected to the mounting table 76 . This elevating chain 78 is suspended by a chain wheel 79 attached to the stay beam 74 and a chain wheel 82 attached to a piston rod 81 of an elevating cylinder 80 connected by a pin to the sole plate 72, and then connected to the stay beam 74. ing. The elevating cylinder 80 is capable of elevating the mounting table 76 between a lowered position shown in phantom lines in FIG. 4 and an elevated position shown in solid lines in FIG. Next, the bobbin transfer device 71 includes vertical pivot shafts 85 and 86 rotatably supported by brackets 83 and 84 fixed to the sole plate 72, and the upper ends of these pivot shafts 85 and 86 horizontal gripping arm 8
7 and 88 are fixed respectively. The above gripping arm 8
Lifting cylinders 89 and 8 are provided at the tips of 7 and 88, respectively.
9 are fixed downward, and their elevating cylinders 8
Four gripping claws 91 are opened and closed by cylinders (not shown) on the piston rods 90, 90 of 9, 89.
A bobbin gripper 92 having a diameter is attached to each bobbin gripper 92 . This bobbin gripping tool 92 is, for example,
The one disclosed in FIG. 11 of Publication No. 41919 may be used, and detailed description thereof will be omitted here. One of the pivot shafts 85 is the bobbin gripping tool 9 of the gripping arm 87.
A predetermined front row peg 9 of the conveyor 6 which is indexed and stopped and one peg 7 of the mounting table 76 in the lowered position.
7F, and the other pivot 86 indexes the bobbin gripping tool 92 of the gripping arm 88, and the other of the predetermined rear row peg 9 of the conveyor 6 in the stopped state and the mounting table 76 in the lowered position. Petsugu 77B
The gripping arms 87 and 88 are connected by a connecting rod 93 so as to be movable with each other. Further, an operating arm 94 is fixed to the lower end of one of the pivot shafts 86,
A piston rod 96 of a swinging cylinder 95 is connected to the operating arm 94 by a pin to the sole plate 72.
are connected by pins. This swing cylinder 95
The gripping arms 87, 88 can be swung between the position shown in phantom lines and the position shown in solid lines in FIG.

Next, in the case of the structure described above, when the full bobbin A unwound by the roving frame 1 is conveyed to the spinning frame 43 position and set, first, when the roving frame 1 is almost full, an appropriate command is sent. Then, the drive motor 13 rotates normally and the elevating mechanism 15 operates, and the pipe changing head 12, which has been in the standby position shown in FIG. 2, rises to the highest position. Next, the moving body 7 of the conveyor 6 rotates intermittently in the counterclockwise direction in FIG.
The device 6 transfers empty bobbins (not shown) attached to the 28 bobbin hangers 34 one by one.
9 and mounted on empty bobbin pegs 10, 10 of the conveyor 6. This empty bobbin transfer operation is performed in the reverse order of the full bobbin A transfer operation described later. The above operation continues, and when the empty bobbins for one rover frame 1 are mounted on the pegs and these empty bobbins face each full bobbin A of the rover frame 1, the rotation of the movable body 7 is stopped. When the rover 1 becomes full and stops operating, the bobbin rail 4 is lowered to a predetermined position, as is well known. Next, the drive motor 21 of the simultaneous pipe switching machine 11 rotates forward and backward movement mechanism 23
is activated, and as a result, the pipe changing arm 2 of the pipe changing bar 24
6F and 26B are advanced from the standby position shown in FIG. 1 to the upper part of the full bobbin A of the roving frame 1, passing above the empty bobbin, and at the forward end, the forked part of the tip touches the full bobbin A. inserted at the top. Next, the bobbin rail 4 is lowered slightly again, and as a result, the full bobbins A, A in the front and rear rows are moved to the tube changing arms 26F, 26.
After that, the drive motor 21 is reversely rotated, the forward and backward movement mechanism 23 is activated, and the pipe switching arms 26F and 26B begin to move backward. When the full bobbin A of the front row passes near the upper part of the peg 9 for the rear row of the conveyor 6 while the tube changing arms 26F and 26B are retracting, the movable body 7 of the conveyor 6 moves leftward in FIG. 1 by half of the peg pitch of the peg 9 row. As a result, the full bobbins A and A in the front and rear rows are moved to the conveyor 6.
It is moved above the pegs 9, 9 for the front and rear rows without interfering with the empty bobbin above. Next, the drive motor 13 is reversely rotated to lower the tube changing head 12, and the full bobbins A, A of the front and rear rows are attached to the corresponding pegs 9, 9 for the front and rear rows. Thereafter, the drive motor 21 is reversely rotated again, the tube changing arms 26F, 26B are retracted and the two prongs are separated from the full bobbins A, A, and after that, the tube changing head 12 is again raised to the rising end. Next, the moving body 7 of the conveyor 6 moves in the opposite direction (to the right in Fig. 1).
The empty bobbins on the conveyor 6 are moved by one-half pitch of the nine rows of hepets to face the tube changing arms 26F and 26B, respectively. Next, after the tube change head 12 is lowered, the tube change arms 26F and 26B move forward to insert the two prongs into the upper part of the empty bobbin, and then the tube change head 12 rises again to peg the empty bobbin 10 and 10. It is pulled out from the pipe and suspended from the pipe changing arms 26F and 26B. next,
The pipe changing arms 26F and 26B start moving forward, and in the middle of the forward movement, the moving body 7 of the conveyor 6 moves leftward to the peg 9.
The empty bobbins on the tube changer arms 26F and 26B are moved by one-half pitch of the row, and the empty bobbins on the tube changer arms 26F and 26B pass between the full bobbins A and A on the conveyor 6 and are moved to each bobbin wheel 5.
is moved upward. Thereafter, the bin rail 4 rises to the winding start position, the bobbin wheel 5 is inserted into the lower hole of the empty bobbin, lifts the empty bobbin, and the upper hole of the empty bobbin is inserted into the leg of the flyer 3. After that, the pipe switching arms 26F and 26B return to the backward position,
The operation of the roving frame 1 is restarted.

When the pipe changing arms 26F, 26B are returned to the backward position, the movable body 7 of the conveyor 6 is rotated clockwise in FIG. The one at the forward end is the bobbin gripping tool 9 in the transfer device 69 shown in FIG.
When moved to the take-out position below 2,92, the movement of the moving body 7 is temporarily stopped. Next, the gripping arm 87,
The lifting cylinders 89, 89 are operated to lower the bobbin grippers 92, 92 to the upper height position of the full bobbins A, A. After that, the bobbin gripping tools 92, 9
2 is activated and the gripping claws 91 hold the full bobbins A, A.
Grasp the upper part of the lifting cylinder 89, 89.
is operated again to raise the bobbin gripping tools 92, 92, whereby the bobbin gripping tools 92, 92 lift the full bobbins A, A and remove them from the pegs 9, 9. Next, the swinging cylinder 95 is operated to move the gripping arms 87 and 88 from the solid line position to the imaginary line position in FIG. Move the pegs 77F and 77B of the stand 76 above. Next, the lifting cylinders 89, 89 descend again, and the full bobbin A,
After lowering the full bobbin A and inserting the lower hole of the full bobbin A into the pegs 77F and 77B, the full bobbin A,
A is placed on the mounting table 76. Next, after the bobbin gripping tools 92, 92 release their grips on the full bobbins A, A, the lifting cylinders 89, 89 move the bobbin gripping tools 9
2 and 92 are raised, and then the gripping arms 87 and 88 are returned to the solid line position in FIG. 3 by the swinging cylinder 95. On the other hand, the peg 77F of the mounting table 76,
When full bobbins A and A are loaded on 77B, after the gripping arms 87 and 88 return, the lifting cylinder 80 is operated to lower the chain wheel 82 and lift the mounting table 7.
6 is raised from the imaginary line position in FIG. 4 to the solid line position. As a result, the full bobbins A and A in the front and rear rows of the mounting table 76 are placed on the bobbin hangers 34 and 34 at the forwardmost ends of the front and rear row bobbin carriers 27 and 28, respectively, which are on standby above the mounting table 76. The upper holes are inserted and their bobbin hangers 34, 34
Full bobbins A and A are installed. Thereafter, the elevating cylinder 80 operates to raise the chain wheel 82, thereby lowering the mounting table 76 and returning it to the lowest position. Next, the drive motors 66, 66 of the transfer devices 56, 56 operate to rotate the feed disks 62, 62, and the rotation of the feed disks 62, 62 causes the bobbin carriage 3
1 and 31 to the right in FIG. The driving of these drive motors 66, 6 is stopped when the proximity switches 68, 68 detect the proximate objects 35, 35, so that the next empty bobbin hanger 34, 34 of the bobbin transport bodies 27, 28 is moved to the bobbin lifting device 7.
It is located above the pegs 77F and 77B of 0. On the other hand, when the full bobbins A, A at the take-out position are removed from the pegs 9, the movable body 7 of the conveyor 6 is moved again by one pitch of the peg 9 row, and the next previous one is moved.
The full bobbins A and A in the rear row are placed in the take-out position, and the above operations are repeated to remove the roving frame 1.
All the full bobbins A in the front row are attached to the bobbin hanger 34 of the front row bobbin conveyor 28, and the roving frame 1
All the full bobbins A in the rear row are attached to the bobbin hanger 34 of the rear row bobbin carrier 28. In the drawing, the bobbin carriers 27 and 28 are designed so that full bobbins A and A in the front and rear rows for two doffings can be mounted, so that the full bobbins A and A in the front and rear rows doffed next. The empty bobbin hangers 34 and 34 next to the bobbin carriers 27 and 28 are mounted. As described above, all the full bobbins A and A in the front and rear rows for two dots are transferred to the front and rear row bobbin conveyor 2.
7, 28, a mounting completion signal is sent to the control device. Note that the moving body 7 of the conveyor 6
When the top bobbin A runs out, the drive motor 13
is reversed and the tube changing head 12 is lowered as shown in FIG. 2, and the upper surface of the tube changing head 12 is used as a step.

On the other hand, while the roving frame 1 is winding the roving and doffing as described above, the spinning frame group G
For example, in the spinning machine 43F for loading full bobbins in the front row, when the Shinomaki bobbin hooked on the outer row bobbin hook 43a of the spinning creel 43P becomes an empty bobbin, the empty bobbin is transferred to the bobbin carriage 44 on the spare rail 44. The suspended full bobbin A is exchanged by an exchanger or the like disclosed in Japanese Patent Application Laid-Open No. 58-81632, or manually.
Bobbin charger 31, 3 at spare rail 44 position
An empty bobbin is suspended from 1. The bobbins in the inner row and the bobbins in the outer row of the spinning machine creel 43P are exchanged using a changer or the like disclosed in Japanese Patent Application Laid-Open No. 58-81632, but the explanation thereof will be omitted here. As mentioned above, the full bobbins of the bobbin carriages 31, 31 of the spare rail 44 and the spinning creel 43
When all the empty bobbins P are replaced, a replacement completion signal is sent to the control device, and the control device uses the replacement rail 44, main rail 42, and return rail to which the replacement completion signal was sent. 4
The drive motor of the moving device attached to 5 is reversed, and the switch 52 at the branch point 48 is appropriately switched. As a result, the bobbin carriages 31, 31 at the spare rail 44 position are first moved to the return rail 4.
After that, the remaining threads of the empty bobbins suspended by the bobbin carriages 31, 31 are removed by the roving stopper 46, and then the bobbin carriages 31, 31 are transferred to the rear part of the return rail 45 and the standby rail. 47 and waits at this position. In this case, the return rail 45
The operation of the transfer device of the standby rail 47 and the switch of the branch point 50 is appropriately controlled by the control device.
These controls can be performed by a microcomputer or the like, and a detailed explanation will be omitted here. When the bobbin carriages 31, 31 are completely removed from the spare rail 44 as described above, a removal completion signal is sent to the control device, and then the reverse rotation of the drive motor of the transfer device is stopped, and the switch 52 is reset. be done. Generally, the take-out completion signal from the spare creel 44 is sent to the spare creels 44, 44 of the two spinning frames 43F, 43B, one for full bobbins and one for the rear row full bobbins, while the two rover frames perform two dotting operations. Rover 1 so that each message is sent from
It is set based on the number of spinning machines 43, etc.

Next, while the unloading completion signal is being sent from the front row spinning frame 43F position as described above, when the loading completion signal is sent from the 1st position of the two spinning frames as described above, the control device According to the command, the guide rail 4 for the front row in the first position of the roving frame
1, 41, main rail 24 and front row spinning machine 4
The drive motors of the transfer devices attached to the spare rails 44 for emitting the removal completion signal at the 3F position are rotated in the normal direction, and the switches 52 at the branch points 48 and 51 are switched as appropriate, and the guide rails 4 of these
1, 41 to the spare rail 44. As a result, the bobbin cartridges 31, 31 supported by the front row guide rails 41, 41 are conveyed in a line to the spare rail 44 which sends a take-out completion signal at the front row spinning machine 43F position, and then The rotation is stopped and the switch 52 is returned to its original position. Next, the guide rail 4 for the front row on one of the two rovering machines 1, 1 which sends the installation completion signal.
1. The drive motor of the transfer device attached to the main rail 42 and the return rail 45 is reversed and the branch point 5 corresponding to the guide rail 41 is reached.
One switch is switched over so that a bobbin carrier 31 can be introduced. As a result, the bobbin carriage 31 that was waiting on the return rail 45 is conveyed to the guide rail 41 at the one position of the roving frame 1, and then the switch is returned to its original position. Next, the drive motors of the transfer devices attached to the front row guide rail 41 and standby rail 47 at the other roving frame 1 position are reversed, and the switch at the branch point 51 corresponding to the guide rail 41 is changed to the above-mentioned state. Similarly, the bobbin carriage 31 that was waiting on the standby rail 47 is transferred to the other front row guide rail 41, and then the reverse rotation of each of the drive motors is stopped, and the switch 51 is returned to its original position. Ru. On the other hand, when a replacement completion signal is sent from the spare rail 44 at the rear row spinning machine 43B, the bobbin carriages 31, 31 are taken out from the spare rail 44 and conveyed to the return rail 45, as in the case for the front row. When the ejecting completion signal is sent from the spare rail 44, the rear row guide rails 41, 41 at the roving frame 1, 1 position
The bobbin carriages 31, 31 are transported to the spare rail 44, and the guide rails 41, 41
The bobbin carriages 31, 31 taken out from the spare rail are conveyed. Note that the number of the roving stoppers 46 and standby rails 47 may be increased as necessary. The full bobbins A and A in the front and rear rows doffed by the roving frame 1 as described above are the front,
It is transported to the spare rails 44, 44 of separate spinning machines 43F, 43B for the back row, and the spinning machines 43 of those spinning machines 43
It is set on spinning creel F, 43B. Therefore, by adjusting the draft amount in each spinning frame 43F, 43B to a value suitable for the full bobbins A, A in the front and rear rows, the roving produced by the difference between the front and rear rows of the roving frame 1 can be reduced. It is possible to almost eliminate unevenness in thread thickness due to differences in thread thickness. Further, the empty bobbin replaced at the spinning frame 43 position is conveyed to the guide rails 41, 41 at the roving frame 1 position and used for the next tube replacement.

In addition, in the above embodiment, the bobbin conveyor 2
Although the case where bobbin transport bodies 27 and 28 are automatically carried out has been explained, the operator uses a hook to transport the bobbin transport bodies 27 and 2.
The bobbin conveying body may be conveyed manually by pulling and moving the bobbin conveyor 8.
In addition, although the above embodiment shows the case where the full bobbins A of the rover 1 are doffed onto the conveyor 6 by the simultaneous pipe changer 11, Japanese Patent Application Laid-open No. 58-98435 and Japanese Patent Application No. 59- Doffing may be done in groups using a mobile doffing machine as disclosed in the specification of No. 35823. In addition, in the above embodiment, spinning machines for the front and rear rows are prepared and each spinning creel is set, but the driving systems for the R side and L side of the spinning machine are separate, and the spinning machines for one side are set separately. The spinning creel on the other side may be configured for loading full bobbins in the front row, and the spinning creel on the other side for loading full bobbins in the rear row, and the spinning creels may be configured to load full bobbins in the front and rear rows. In addition, the bobbin conveyor may be configured with a storage car that runs on the floor. In this case, full bobbins of the roving frame are directly loaded onto the storage car by transporting the full bobbins to the side of the machine frame. Alternatively, the full bobbin of the roving frame may be doffed onto the front conveyor as in the above embodiment, and the doffing may be carried out from there.

Effects of the Invention As described above, in the present invention, full bobbins in the front and rear rows doffed from the roving machine are transferred to separate bobbin transport bodies for the front row and for the rear row, respectively, and these bobbin transport bodies are The full bobbins in the front row are loaded onto the spinning creel for the front row, and the full bobbins in the rear row are loaded onto the spinning creel for the rear row by moving them to their respective spinning machines. Even if there is a large difference in thickness between the roving of the bobbin and the roving of the full bobbin in the back row, the spinning conditions of the draft mechanism corresponding to the spinning creel for the front row and the back row should be By setting a value suitable for the roving thickness, the difference in thickness between the yarn spun on the front row spinning creel and the yarn spun on the rear row spinning creel can be reduced. As a result, unevenness in yarn thickness can be reduced and yarn quality can be improved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a partially cutaway plan view of the roving frame, FIG. 2 is a front view of FIG. 1 with a portion omitted, and FIG. 4 is a side view of the transfer device with some parts omitted; FIG. 5 is a sectional view showing the transfer device for the bobbin conveyor; FIG. 6 is a plan view of the transfer device; Fig. 7 is an explanatory diagram showing the conveyance path of the bobbin conveyor, Fig. 8 is an explanatory diagram of the switch, Fig. 9 is an explanatory diagram showing the spare rail of the spinning machine, and Fig. 10 is an explanatory diagram of the creel rail section of the spinning machine. FIG. 11 is a side view of the bobbin carrier, and FIG. 12 is a plan view of the bobbin carrier. 1... Roving machine, 3... Flyer, 11... Simultaneous tube changing machine (doffing machine), 27, 28... Bobbin conveyor, 43
P...Spinning creel, 69...Transfer device.

Claims (1)

[Claims] 1 Doff full bobbins from a roving frame with flyers arranged in a staggered manner in the front and back rows, transfer the full bobbins to a bobbin conveyor, move the bobbin conveyor, and convey the full bobbins to the spinning creel. In the method for doffing and conveying full bobbins, the bobbin conveying bodies are divided into two types: one for the front row of the roving machine for conveying full bobbins in the front row of the roving frame, and one for the rear row of the roving frame for conveying the full bobbins of the rear row of the roving frame. Prepare two sets of bobbins, and when doffing, separate the full bobbins in the front row and the full bobbins in the back row, and doff them.
The doffed full bobbins in the front row are transferred to the front row bobbin transporter, the rear row full bobbins are transferred to the rear row bobbin transporter, and the front row bobbin transporter is transferred to the front row spinning creel where the front row full bobbins are loaded. This method for doffing and conveying full bobbins includes moving a rear row bobbin conveyor to a rear row spinning creel for loading full bobbins in the rear row, and loading full bobbins in the front and rear rows on different spinning creels.