JPH08260263A - Method for controlling operation of flyer frame and apparatus therefor - Google Patents

Abstract

PURPOSE: To provide a method for controlling the operation of a flyer frame enabling the reduction of the amount of remaining rove of a full bobbin used in a spinning process and to provide an apparatus therefor. CONSTITUTION: An encoder 11 is connected to a controller 10 of a flyer, frame 1, and a full bobbin stopping length and stopping lengths at four sliver- connection points corresponding to each of can rows 2a to 2d are memorized in the memory 12 of the controller 10. When the exchange of a can is required at one of the can rows 2a to 2d, the operation of the flyer frame 1 is temporarily stopped at the point where a real spinning length determined by the encoder 11 is corresponding to the can row 2a to 2d, and the exchanges of the can and sliver connection are performed. Then, the flyer frame is restarted and the operation is continued until the full-bobbin stopping.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present application relates to a roving machine operation control method and apparatus.

[0002]

2. Description of the Related Art Referring to FIG. 2, a conventional roving machine operation control device will be described. A plurality of can rows 2a to 2d along the longitudinal direction of the roving frame are arranged side by side on the back of the roving frame in a rearward direction of the machine frame. The sliver accommodation amount is divided and set up between the can rows 2a to 2d, the sliver S of the cans 2 of each can row 2a to 2d is supplied to the roving machine 1, and at the same time, the can rows 2a to 2d of which the can replacement is requested. Kens 2 is ready Full 3s
It was configured to replace the cans 3 of a and 3b for sliver splicing. And in the past, a certain sequence of cans 2
When there is a can replacement request in a to 2d, when the roving machine 1 is fully stopped, the ken replacement and sliver splicing work are performed, and then the first layer of the roving bobbin next to the roving machine 1 Alternatively, the seam produced by sliver splicing should be wound in the second layer, and when the full roving bobbin wound in this way is used in a spinning machine, the first and second layers are left as residual roving. To improve the quality of spun yarn (particularly high-quality fine yarn) produced by the spinning process.

[0003]

In the above-mentioned conventional technique, the length of the sliver S in the first row of cans 2a and the fourth row of cans 2d is close to 3 m, so that the first row of cans 2a is separated. 4th cans row 2 compared to the second cans row 2a
The seam of the sliver S at d was wound as a roving with a delay of about 30 m. However, as a matter of course, in the spinning machine, since it is necessary to leave the joint portion of the full roving bobbins in all the can rows 2a to 2d as the remaining roving, the 4th row 2d
In accordance with the remaining roving amount of the full roving bobbin in the can row, the other full roving bobbins in the other can rows 2a, 2b, and 2c also leave the same amount of residual roving, and the waste roving is wastefully However, these processing tasks have become complicated.

[0004]

In order to solve the above problems, according to claim 1, when a certain can row is in a state where the can should be exchanged, the spinning length from the beginning of winding is the respective can row. When the stop length suitable for sliver splicing is determined based on the distance between the sliver and the roving machine, the roving machine operation is stopped, then the cans of the can row are replaced and the sliver splicing is performed, and then the roving bobbin The re-running of the roving spinning machine is performed until the full spinning is completed. In claim 2, a spinning length detector for detecting the spinning length from the start of winding to the full spinning is provided, and the roving spinning machine control device is provided. A means for recognizing which can rows should be used for can replacement based on the spinning length, and a storage means for storing a stop length suitable for sliver splicing, which is determined based on the distance between each can row and the roving frame. And a suitable stop for these sliver joints. Of the lengths, it is characterized by comprising a reading means for reading a stop length corresponding to a can row for performing a can exchange, and a can exchange stop command output means for stopping the operation of the roving frame at the read stop length. .

[0005]

According to the present application, no matter which can row is used for can replacement and sliver splicing work, the seam portion of the sliver is wound with the same winding amount early in the winding start of the roving bobbin. The amount of residual roving in the spinning process is reduced.

[0006]

EXAMPLES Next, examples of the method and apparatus for controlling the operation of the roving frame will be described. As shown in FIGS.
On the back of the machine base, first to fourth can rows 2a to 2d composed of a large number of cans 2 along the machine longitudinal direction are arranged in parallel rearward of the machine base. The sliver accommodating amount of the cans 2 in each of the can rows 2a to 2d is divided and set up. 3rd can row 2c
In front of and behind the fourth can row 2d, the can row 2a
In the same manner as 2d to 2d, spare full can rows 3a and 3b each including a plurality of full cans 3 arranged in the machine longitudinal direction are provided. As will be explained in the operation described below, the full spare can row 3
a is used when the cans of the first, second and third can rows 2a, 2b and 2c are exchanged, and the spare full can row 3b is the fourth can row 2
It is designed to be used when ds can replacement. Support creels 5 extending above the can rows 2a to 2d are provided at the back of the machine frame of the roving frame 1 at predetermined intervals along the machine frame longitudinal direction. A plurality of (five in the drawing) guide rollers 6 extending in the machine longitudinal direction are rotatably supported between these support creels 5, and these guide rollers 6 can be positively driven by a drive mechanism (not shown). There is. These guide rollers 6 guide the sliver S from the cans 2 in each of the can rows 2a to 2d to the draft section 8 of the roving machine 1, and the rovings drafted by the draft section 8 are arranged in a staggered manner on the machine base. It is designed to be wound around a roving bobbin.

An encoder 11 for detecting the number of rotations of the front roller 8a constituting the draft section 8 is connected to the control device 10 of the roving frame 1, and the encoder 11 for detecting the spinning length of the roving frame 1 is connected to the encoder 11. It constitutes a length detecting means.
Further, in the memory 12 of the control device 10, the full pipe stop length L ₀ from the start of winding to the full pipe, the roving frame 1 and each can row 2a.
The stop lengths L _{1 to} L ₄ from the start of winding, which are suitable for sliver splicing and are determined based on the distance between the distances 2 to 2d, are stored, and this memory 12 constitutes storage means. The stop lengths L _{1 to} L ₄ suitable for sliver splicing are calculated by the following equation. ……… Ln = L ₀ − (Sliver length between X and Yn) * D Ln: Stop length when sliver is connected (L _{1 to} L ₄ corresponding to each can row) L ₀ : Full pipe stop length X : Position immediately before draft Yn: Sliver joint position (Y ₁ to Y corresponding to each can row)
₄ ) D: Draft amount Stop length L ₁ ~ at sliver joint calculated as above
As will be described later with reference to the operation of L ₄ , the joint portion of the sliver S located at the sliver joint positions Y _{1 to} Y ₄ at the time of changing the can is immediately before the draft portion when the roving machine 1 is fully stopped. It is located at the position X.

Next, referring to FIG. 3, various function realizing means performed by the control device 10 will be described. Step S1
Then, the roving machine 1 starts to operate, and in step S2, the number of doffing is checked to determine which can row requires the can exchange, as will be described later in operation, and the can exchange in the step 2 When it is determined that is not necessary,
The operation is continued in step S3, and then step S8
Thus, the roving machine 1 is fully stopped, and the roving bobbin is doffed in step S9. Further, when it is necessary to exchange the cans in any of the can rows 2a to 2d in step S2, in step S4, the stop length L ₁ to suitable for the sliver connection corresponding to the can rows 2a to 2d from the memory 12 of the control device 10 is set. L ₄ is read, step S4 constitutes a reading means. Further, in step S5, when the measured value of the spinning length detected by the encoder 11 becomes the stop lengths L _{1 to} L ₄ read in step S4, the operation of the roving frame 1 is temporarily stopped, and this step S5 is stopped. It constitutes a replacement stop command output means. Further, while the roving frame 1 is stopped in step S5, the worker performs can replacement and sliver splicing work in step S6. When the work in step S6 is completed, the operation of the operation start switch 14 connected to the control device 10 is operated by the operator in step S7 to restart the operation of the roving frame 1, and further, in step S8.
When the measured value of the spinning length detected by the encoder 11 reaches the full pipe stop length L ₀ , the rough spinning machine is fully stopped, and the doffing is performed in step S9.

Next, the operation of the embodiment configured as described above will be described. First, the preparatory work before the start of operation will be described. The maximum sliver accommodation amount of the cans 2 in each of the can rows 2a to 2d is set to 48 pounds, and the amount of roving wound on the roving bobbin of the roving machine 1 is 4 pounds. Is set, and 12 full roving bobbins can be wound per can. Further, the division setup of each of the can rows 2a to 2d is 4 / in the first can row 2a at the time of setting.
4 (48 lbs), 2nd cans 2b 3/4 (36 lbs), 3rd cans 2c 2/4 (24 lbs), 4th cans 2d 1/4 (12 lbs) There is.
As a result, in order from the fourth can row 2d to the first can row 2a, it is necessary to change the cans once every three doffings of the roving machine. Check the number of doffing of the roving machine during 1 cycle until 2a is replaced,
At the time of counting the number of doffing for the 8th and 11th times, it is possible to recognize in the step S2 which cans row should be exchanged for a can. Checking the number of doffs like this
That is, it is the accumulation of the spinning length from the time of setting, and the step 2 is a means for judging which cans row should be the cans exchange based on the spinning length. Further, in the memory 12 of the control device 10, the full pipe stop length L ₀ and the stop lengths L _{1 to} L ₄ at the time of sliver splicing calculated by the above formula are set.

After the above-described preparation work is performed, the roving frame 1 is operated (step S1).
The sliver S from the 2d can 2 is guided by the guide roller 6 and drafted by the draft section 8, and wound as a roving on a roving bobbin. Then, at the start of the first operation of the roving frame 1, it is not necessary to replace the cans in any of the can rows 2a to 2d (step S2), so that the operation of the roving frame 1 is continued (step S3), and then a full pipe stop is performed. Then, the roving bobbin is doffed (step S8) (step S9). However, the roving machine 3,6,9,1
Immediately before the second doffing, either can row 2a ~
In 2d, the can is to be replaced (step S2),
The control device 10 selects the sequence 2 of the cans from the stop lengths L _{1 to} L ₄ at the time of splicing the four slivers stored in the memory 12.
read stop length L ₁ ~L ₄ corresponding with A～2d (step S4).

Now, assuming that the fourth can row 2d is in a state where the can should be exchanged, the stop length L ₄ at the time of sliver connection is read. Then, when the measured value of the spinning length detected by the encoder 11 from the start of winding immediately after the state where the cans should be exchanged becomes the stop length L ₄ , the roving frame 1
Is stopped (step S5). Then, while the roving machine 1 is not in operation, the worker replaces the cans 2 in the fourth can row 2d with the cans 3 in the fully filled can row 3b, and performs the splicing work between the old and new sliver (step S
6). At this time, the seam portion generated by the sliver splicing work is located at the sliver splicing position Y ₄ . Then, the operator operates the operation start switch 14 to restart the roving frame 1 (step S7), and the seam part of the sliver S moves toward the draft part 8 along with this restart. After that, when the measured value of the spinning length detected by the encoder 11 reaches the full pipe stop length L ₀ , the operation of the roving machine 1 is stopped (step S
8). At this time, the seam portion of the sliver S is located at the position X immediately before the draft portion. Then, when the roving bobbin is doffed (step S9) and the roving is wound on the next roving bobbin (step S1), the seam of the sliver is wound early in the winding start of the roving bobbin. Will be done.

By the way, in step S2, the other first, second,
Even when the three cans rows 2a to 2c are in a state where the cans should be exchanged, the same as the above operation, the cans rows 2a to 2c.
Corresponding to the sliver splicing with stop lengths L _{1 to} L ₃
Is stopped once, the cans are replaced and the sliver is spliced, and then the roving machine 1 is run again until the full pipe stop length L ₀ is reached.
To drive. Then, the seam portion located at the sliver splicing positions Y _{1 to} Y ₃ at the time of the sliver splicing work is located at the position X immediately before the draft portion when the roving machine 1 is in a fully stopped state, and this seam portion is the next roving bobbin. It will be wound early in the beginning of winding. Therefore, no matter which of the can rows 2a to 2d is used for the sliver splicing work, the seam portion of the sliver S is wound with the same winding amount at an extremely early stage of the next roving bobbin. When the cans are exchanged in the second and third cans rows 2b and 2c, the cans 2 in the second and third cans rows 2b and 2c are directly exchanged with the cans in the preliminary full cans row 3a,
When performing a can replacement in the first can row 2a, first,
The cans 2 of the first cans row 2a and the cans 2 of the second cans row 2b are exchanged, and then the cans 2 of the first cans row 2a and the cans 3 of the fully filled cans row 3a are replaced.

As described above, in the above embodiment, the seam portion generated by the sliver splicing work on the back of the roving machine 1 is used as the residual roving in the spinning process and is not used. It can be improved, which is particularly effective for fine yarn high-quality yarn varieties. Further, in the above-mentioned embodiment, no matter which of the can rows 2a to 2d is used for can replacement, the joint portion of the sliver S is located at the position X immediately before the draft portion when the roving machine 1 is fully stopped. Therefore, the seam portion of the sliver S is taken up with the same winding amount at an extremely early stage of winding the roving bobbin, and when these roving bobbins are used in the next spinning step, the remaining The amount of roving can be extremely reduced. In addition, in the above-mentioned embodiment, although two rows of the full spare can rows 3a and 3b are provided, they may be provided as one row. In that case, in the same manner as the first and second can rows 2a and 2b, the third and third rows are provided. 4 cans row 2c,
2d also needs to be configured so that it can be swapped back and forth. Further, in the above embodiment, the can replacement and sliver splicing work in step S6 of FIG. 3 is performed manually, but it may be applied to an automatic machine.

Next, another embodiment of the present application will be described. In this embodiment, the control device 10 of the roving frame is provided with a counter for accumulatively measuring the detected value of the spinning length from the encoder 11 for one cycle until the can exchange is completed in all the can rows. . Then, the stop lengths L ₁ ', L at the time of sliver connection stored in the memory 12 of the control device 10
_{2 ', L 3', L} 4 ' shall be calculated by the following equation. Ln '= (3 * N- 1) * L 0 + Ln Ln': sliver stopping length during splicing (corresponding to each cans column _{L 1 '~L 4') N} : 1~ corresponding to each cans column 4 L ₀ : Full pipe stop length Ln: Value calculated by the calculation formula (L corresponds to each can row)
_{1 to} L ₄ ) Then, when the measured value of the spinning length measured by the counter from the start of the operation of the roving frame reaches each stop length L ₁ ′ to L ₄ ′, the operation of the roving frame 1 is once stopped, and When the sliver is spliced, the seams of the sliver located at the sliver splicing positions Y _{1 to} Y ₄ are located at the full pipe stop position X when the roving machine 1 is fully stopped thereafter. Then, when the cans are exchanged in all the can rows, the value of the counter is reset to 0, and the spinning length detected by the encoder 11 again is cumulatively measured from the start of the operation of the next roving frame. It will be.

Next, a second embodiment will be described with reference to FIG. 2. The same components as those in the above embodiment are designated by the same reference numerals. In this embodiment, the first and second can rows 2a and 2b
When it becomes a state where the can is to be replaced, the pre-full pipe stop is not performed as in the above embodiment, that is, the stop lengths L ₁ and L ₂ at the time of sliver connection are set to the same value as the full pipe stop length L _0. Shall be done. The stop lengths L ₃ and L ₄ at the time of sliver splicing corresponding to the third and fourth can rows 2c and 2d are calculated by the following equation. Ln = L ₀ − (Sliver length between Z and Yn) * D Ln: Stop length when sliver is connected (L ₃ , L ₄ corresponding to the _3rd and 4th can rows) L ₀ : Full pipe stop length Z : Full pipe stop position (however, the sliver length between Z and X and the sliver length between Y ₁ (Y ₂ ) and X are the same value) Yn: Sliver joint position (corresponding to the third and fourth can row) Y ₃ , Y ₄ ) D: Draft amount Stop length L ₃ at sliver joint calculated as above
With L ₄ , the third and fourth parts are obtained in the same manner as the operation of the above embodiment.
Cans columns 2c, when 2d a can changer requests to stop temporarily the operation of the roving frame 1 at the stop length L _3, L ₄ before fully wound, the sliver piecing position Y ₃ at this time sliver piecing performed, Y ₄ The seam portion of the sliver located at is located at the full pipe stop position Z when the roving machine 1 is fully stopped thereafter. Further, when there is a can replacement request in the first and second can rows 2a and 2b, the operation of the roving frame 1 is stopped after the full pipe stop length L ₀ is reached, the can replacement and sliver joining are performed, and the joint of the sliver S is performed. The parts are located at the sliver joint positions Y ₁ and Y ₂ . The seam of the sliver S located at the full pipe stop position Z or the sliver splicing positions Y ₁ and Y ₂ has the same winding amount when wound on the next roving bobbin of the roving machine 1. Length (remaining roving length)
Is less than conventional techniques.

Next, the embodiments of the present application will be collectively described. (a) No matter which of the can rows 2a to 2d is used for can replacement, the stop length L suitable for sliver splicing is set so that the seam of the sliver S is located at the position X immediately before the draft part when the roving machine 1 is fully stopped. operation control method or apparatus for roving of any one of claims 1, 2, 3, characterized in that setting the ₁ ~L _4. (Effect) The seam portion of the sliver S located at the position X immediately before the draft portion is wound with a small winding amount at an extremely early stage of the winding start of the next roving bobbin, and the full roving thus wound is wound. The amount of residual roving when using the bobbin in the spinning process can be reduced. (b) A stop length L ₁ suitable for sliver splicing so that no matter which of the can rows 2a to 2d is used for can replacement, the seam of the sliver S is wound around the next roving bobbin with the same winding amount.
_4. The operation control method or apparatus of the roving frame according to claim 1, wherein L ₄ to L ₄ are set.

[0017]

As described above, according to the present invention, when changing the cans of the can rows having different distances from the roving machine on the back of the base, the sliver is stopped by stopping the roving machine according to the distance from the roving machine. We changed the timing of splicing and changing the cans so that the seam was at a fixed position so that the pipe was full.
Even if the can is replaced and the sliver splicing work is performed in any of the can rows, the sliver seam is wound around the next roving bobbin with the same winding amount, and the amount of roving remaining in the spinning process can be reduced. it can.

[Brief description of drawings]

FIG. 1 is a plan view of an operation control device for a roving machine of this embodiment.

FIG. 2 is a side view of FIG.

FIG. 3 is a flow chart for explaining the operation.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 roving machine, 2a to 2d cans row, 10 control device, 11 encoder (spinning length detection means), 12 memory (storage means), L ₀ full pipe stop length, L _{1 to} L ₄ stop length suitable for sliver splicing

Claims (2)

[Claims] 1. A plurality of cans rows along the longitudinal direction of the machine stand are arranged side by side on the back of the roving machine base toward the rear of the machine base, and the sliver accommodation amount is divided and set up between the cans rows. In the roving machine which supplies the sliver of the can to the roving machine and stops the operation of the roving machine when the roving bobbin becomes full, and performs the doffing, when a certain can row becomes a state in which the can can be replaced, When the spinning length from the beginning of winding of the roving bobbin becomes a stop length suitable for sliver splicing, which is determined based on the distance between each can row and the roving machine, the roving machine is stopped and then the A method for controlling the operation of a roving machine, which comprises performing a can replacement and a sliver splicing on a can row, and then restarting the roving machine until the roving bobbin is full. 2. A plurality of cans rows along the longitudinal direction of the machine stand are arranged in parallel on the back of the roving machine stand toward the rear of the machine stand, and the sliver accommodation amount is divided and set up between the cans rows. A sliver of Kens is supplied to the roving machine, and when the roving bobbin becomes full, the roving machine is stopped and doffing is performed. An output length detector is provided, and the control device of the roving frame is determined based on the means for recognizing which can row to change the can based on the spinning length and the distance between each can row and the roving frame. The storage means for storing the stop length suitable for the sliver splicing, the reading means for reading the stop length corresponding to the can row for the can exchange among the stop lengths suitable for the sliver splicing, and the read stop length Ken shutting down the roving machine An operation control device for a roving frame, which comprises: