JPH031409B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a system for transporting pipe yarn discharged from a spinning machine group having a full pipe yarn (hereinafter referred to as "pipe yarn") transport conveyor arranged along the longitudinal direction of the machine frame. The present invention relates to a method of transporting yarn to a predetermined position by a main conveyor provided along a group of spinning machines.

In a spinning machine equipped with an automatic doffing machine (not shown), as shown in Fig. Tube yarns 3L and 3R doffed by
is inserted into the pegs on the belts of the pipe and yarn transport conveyors 2L and 2R installed along the longitudinal direction of the lower left and right sides of the spinning machine N, and conveyed by the belts to the edge of the machine frame. A method is being adopted in which the main conveyor 1 is used to further convey the material to the next process such as a winder or a thread sorter.

In a spinning factory, it is extremely important for yarn quality control and work efficiency in the next process to transport the yarn from the spinning machine to the next process without damaging it. If this method is adopted, in order to avoid damage to the pipes, the pipe threads must be discharged from the next spinning machine one by one after the pipe threads have been discharged from one spinning machine in the spinning machine group. No. However, it is common for a spinning factory to have a large number of spinning machines installed, and if the pipe yarns from these many spinning machines are not discharged in a timely manner, the work efficiency will decrease and the spinning machines will be affected. It may even be necessary to interrupt the spinning operation.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method for conveying a pipe yarn by efficiently controlling the timing of discharging the pipe yarn from a group of spinning machines and efficiently performing the discharge without damaging the pipe yarn.

For this purpose, the pipe yarn conveying method of the present invention is such that the pipe yarn conveyed to the end of the machine stand by the yarn conveyor provided along the longitudinal direction of each machine frame is arranged along the end of the machine stand of a plurality of spinning machines. In a method of conveying a yarn on a spinning machine, the yarn is transferred onto a main conveyor, and the yarn is conveyed to a predetermined position by the main conveyor, and the yarn is discharged from a conveyor that conveys the yarn provided on the n-th spinning machine from the downstream side with respect to the conveyance direction of the main conveyor. When the m-th spinning machine completes preparations for discharging the pipe yarn after completion of preparation, if m<n, the last pipe discharged from the n-th spinning machine to the main conveyor passes through the m-th spinning machine. is detected, and based on the detection result, starts driving the pipe conveyor provided in the m-th spinning machine,
When m>n, detect or predict the position of the last pipe yarn discharged from the pipe conveyor of the n-th spinning machine, and based on the detection or prediction, so as not to interfere with this final pipe yarn. This is characterized in that the driving of the pipe and yarn transport conveyor provided in the m-th spinning machine is started.

Next, embodiments of the pipe yarn conveying method and implementation apparatus according to the present invention will be described in detail with reference to the drawings from FIG. 2 onwards.

FIG. 2 is a plan view of a group of spinning machines, in which a large number of spinning machines N are shown arranged side by side. On both sides of each spinning frame N, there are pipe yarn conveyor conveyors 2 along the longitudinal direction.
L and 2R are arranged, and the pipe yarns from these pipe conveyor conveyors are discharged onto the main conveyor 1 provided along the edge of the frame of the spinning machine group. The main conveyor 1 is driven by a drive motor 4 to convey the pipe yarn in the direction of the arrow. The spinning machines are numbered as shown in the figure from the downstream side with respect to the yarn transport direction. Further, marks 5 are attached to the belt of the main conveyor 1 at a predetermined pitch 1, and passage of the marks 5 is detected by a detection device. FIG. 3 shows an embodiment of this detection device, in which the mark 5 is made of a light-reflective member, and the detection device disposed at the downstream end of the main conveyor in the conveyance direction is a well-known photoelectric device 6.
The detection signal of the mark 5 is converted into a pulse signal IS (FIG. 4) in the usual manner. This pulse signal IS is input to a control device described later.

On the other hand, each spinning frame N is equipped with a simultaneous automatic doffing machine (not shown) which may be a well-known type, and this automatic doffing machine transfers the pipe yarns of the related spinning machines onto the pipe yarn transport conveyors 2L and 2R. When doffing is performed, the control device 7 of the automatic doffing machine generates pipe yarn discharge preparation completion signals IS ₁ to IS _o , and these signals are also input to the control device described later.

FIG. 4 shows a block diagram of the aforementioned control device, which includes input interfaces 8,
It is a microcomputer having a control/arithmetic section CPU, a data storage section RAM, a program section ROM, and an output interface 9.

In FIG. 4, a mark pulse signal IS from the detection device 6 and a yarn discharge preparation completion signal IS ₁ to IS _o (Saffix 1...) from the control device 7 of the automatic doffing machine.
(n corresponds to the machine number of the spinning machine) is input to the input interface 8. The latter signals are encoded in the CPU in the order in which they are input, and the encoded signals IS ₁ ′ to IS _o ′ are stored in the RAM. for example,
In the following explanation, it is assumed that the yarn discharge preparation completion signal is input in the order of IS ₅ , IS ₉ , and IS ₁ . At this time, coded signals are stored in the RAM memories M ₁ , M ₂ , and M ₃ in the order of IS ₅ ′, IS ₉ ′, and IS ₁ ′ as shown below.

M _o 00000000 〓 〓 M ₅ 00000000 M ₄ 00000000 M ₃ 00000001 (IS ₁ ′) M ₂ 00001001 (IS ₉ ′) M ₁ 00000101 (IS ₅ ′) OS ₁ ~ _{OS o} when the following conditions are met The output interface 9 connects to the drive motors of the spinning machine N's tube conveyor conveyors 2L and 2R (Fig. 2).
This is the yarn unloading start signal input to ML and MR.

Now, when IS ₅ is first input to the input interface 8, the signal IS ₅ is encoded in the CPU,
Coded signal IS ₅ ′ in memory M ₁ of RAM =
00000101, and the yarn discharge start signal OS ₅ from the output interface 9 is sent to the drive motor of the yarn conveyor 2L, 2R of the fifth spinning machine.
It is input to ML and MR, and the drive of the pipe and yarn transport conveyor is started. When the pipe yarn transport preparation completion signal is input to the input interface 8 in the order of IS ₉ and IS ₁ while the fifth spinning machine is discharging the pipe yarn, each signal is encoded and stored in the memory M ₂ and M ₃ in the order. coded signal IS ₉ ′,
It is stored as IS ₁ ′. When the discharge of the pipe yarn from the fifth spinning machine is completed, the control device 7 of the automatic doffing machine detects this, and the signal IS ₅ disappears, so that the pipe conveyor of the fifth spinning machine stops. . At this point, the CPU performs the processing shown in the flowchart of FIG.

That is, it is determined whether the encoded signal IS ₉ ' of the memory M ₂ is 0 or not, and if NO, the encoded signals stored in the memories M ₁ and M ₂ are compared, and M ₁ > If not M ₂ , the spinning machine with the number corresponding to the coded signal stored in memory M ₂ ;
That is, a yarn discharge start signal OS ₉ is sent to the drive motor of the tube conveyor of the ninth spinning frame via the output interface 9. In addition, in RAM, the coded signals of memories M ₂ to _{M o} are transferred to memories M ₁ to
Each is transferred to M _o-1 . Therefore, the pipe yarn discharge preparation completion signal is received from the ninth spinning frame located upstream of the fifth spinning frame in the transport direction of the main conveyor 1.
If IS ₉ is issued, the pipe yarn unloading start signal will be issued at the same time as the pipe yarn unloading from the 5th spinning frame is completed.
OS ₉ is output and the pipe yarn is carried out from the ninth spinning frame. The RAM memory is as follows.

M _o 00000000 〓 〓 M ₃ 00000000 M ₂ 00000001 M ₁ 00001001 Next, when the pipe yarn is completely discharged from the ninth spinning machine, the signal IS ₉ disappears in the same way as the signal IS ₅ . At this point, the CPU performs the following process shown in the flowchart of FIG.

That is, it is determined whether the coded signal IS ₁ ' stored in the memory M ₂ is 0 or not, and if NO, the coded signals stored in the memories M ₁ and M ₂ are then compared. If M ₁ > M ₂ , the 9th and 1st
In order to calculate the number of marks between the th spinning frames, the following calculation is performed.

(M ₁ − M ₂ )×%L/%l Here, %L is the binary digit of the pitch L between machines, %
l is the binary digit of the mark pitch l, and the solution %k of the operation is determined by the detection device 6 at the same time as the signal IS ₉ disappears.
starts counting the pulse signal IS from , and compares the counted value with the binary number %p, and if %p > %k, the spinning machine corresponding to the coded signal stored in the memory _M2 , i.e. 1 A yarn discharge start signal OS ₁ is sent to the drive motor of the tube conveyor of the second spinning frame. Therefore, with respect to the conveying direction of the main conveyor 1, 9
If the first spinning frame located downstream from the ninth spinning frame sends the pipe yarn discharge preparation completion signal IS ₁ , the last of the tube yarn discharged from the ninth spinning frame is sent to the first spinning frame. After confirming that the yarn has passed through the spinning frame, the pipe yarn is started to be discharged from the tube conveyor conveyor of the first spinning frame.

Similarly, in RAM, the coded signals of memories M _{2 to o} are transferred to memories M _{1 to o-1} , respectively,
The signals stored in memories M1 _{to o-1} are as follows.

M _o 00000000 〓 〓 M ₃ 00000000 M ₂ 00000000 M ₁ 00000001 When the pipe thread conveyance from the pipe thread transport conveyor of the first spinning machine is completed, the pipe thread delivery preparation completion signal is also output in the same way.
IS ₁ is no longer present, and at this point the CPU determines whether M ₂ = 0, that is, whether the next pipe yarn discharge preparation completion signal has been input, and if YES, the stored contents of memory M ₁ are is cleared and waits for the next ready signal IS ₁ to IS _o .

In the above embodiment, when the m-th spinning frame that should carry out the pipe yarn discharge next to the specific n-th spinning frame that is currently conveying the tube yarn is located upstream in the conveyance direction of the main conveyor, that is, n< In the case of m, it was decided to start unloading the yarn from the m-th spinning frame after the unloading of the yarn from the n-th spinning frame was completed, but for example, a mark attached to the main conveyor and a similar detection device were used. is also attached to the pipe thread transport conveyor of each spinning machine to detect the moving length of the pipe thread transport conveyor, and when the m-th spinning machine issues a pipe thread delivery preparation completion signal,
Calculated from the distance that the pipe conveyor of the n-th spinning machine moves until it discharges the final pipe and the distance between the n-th and m-th spinning machines ((M ₁ - M ₂ ) x %L). Then, at a convenient time before the completion of carrying out the pipe from the nth spinning frame, a pipe and thread unloading start signal may be outputted to carry out the pipe and thread from the m-th spinning machine.In this case, More efficient transport control is possible.

As described above, according to the conveying method of the present invention, when the pipe yarns from a group of spinning machines equipped with simultaneous automatic doffing machines are conveyed to the next process on the main conveyor, the pipe yarns are not damaged, and the conveyance efficiency is high. This will greatly contribute to the automation and rationalization of textile mills.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a device capable of carrying out the pipe yarn conveying method of the present invention, Fig. 2 is a plan view of a group of spinning machines carrying out the present invention, and Fig. 3 is a method for detecting marks on the main conveyor. FIG. 4 is a schematic block diagram of a control device for implementing the pipe yarn conveying method of the present invention, and FIGS. 5 and 6 are flowcharts explaining the operation of the control device shown in FIG. 4. It is. In the figure, 1 is the main conveyor, 2L and 2R are the tube and yarn transport conveyors, 3L and 3R are the tube and yarn, N is the spinning machine, 5 is a mark, 6 is a mark detection device, 7 is a tube and yarn discharge preparation completion signal generator, 8 is an input interface, 9
is the output interface, CPU is the control/calculation section,
RAM is a data storage section, and ROM is a program section.

Claims (1)

[Claims] 1 The full yarn conveyed to the edge of the machine frame by the full yarn conveyor installed along the longitudinal direction of each machine frame is transferred onto the main conveyor installed along the edge of the machine frame of the plurality of spinning machines. In a full yarn conveyance method of a spinning machine in which the yarn is conveyed to a predetermined position by a conveyor, the mth When the spinning machine completes the preparation for discharging the full yarn, if m<n, the last full yarn discharged from the n-th spinning machine to the main conveyor is the m
It is detected that the yarn passes through the spinning machine, and based on the detection result, the drive of the full yarn conveyor provided in the mth spinning machine is started, and if m>n, the conveyance of the full yarn of the nth spinning machine is started. The position of the final full yarn to be discharged from the conveyor is detected or predicted, and the full yarn transport conveyor installed in the m-th spinning machine is installed based on the detection or prediction so as not to interfere with the final full yarn. 1. A method for carrying out a full yarn from a spinning machine, the method comprising starting a drive of a spinning machine.