JPH03128860A - Sort switching method - Google Patents

Abstract

PURPOSE:To eliminate operation stop for switching except the time when dummy trays are simultaneously discharged, and prevent the generation of loss package by situating the dummy trays in the winding positions of units, and then simultaneously discharging the dummy trays. CONSTITUTION:A dummy package is apparently detected as presence of package, but as pick finding of thread can not be conducted, an automatic doffing device AD fails the pick finding operation, and moves to the next spindle to successively conduct thread set and doffing for the sort before change. By supplying dummy trays 3E of the same number as unit number and the following thread feed trays of a changing sort while repeating the above operation, the dummy trays 3E are situated in the winding positions of all the units, and when the thread feed trays of the changing sort are situated in reverse position, the machine is laid into stopped state. The dummy trays 3E are discharged all together, whereby simultaneous change can be conducted.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a tray circulation conveyor for yarn feeding at the bottom of an automatic winding machine in which a number of individually driven winding units are arranged in parallel. The present invention relates to a type switching method for switching types of yarn fed by the tray circulating conhair in an automatic winding system.

[Conventional technology]

During the process of processing synthetic fiber raw materials, raw cotton, and wool into textile products, there is a rewinding process as a preparatory process. This rewinding process is used for various purposes such as cleaning or reforming the dyed package before the knitting/weaving process, creating large packages to lengthen the unit length, and rewinding into easy-to-use packages for cheese, corn, bottles, etc. It will be carried out accordingly.

As a winding machine that is suitable for such various purposes and can rewind any type of yarn into packages of any shape,
There is an automatic winding system in which a tray circulating conveyor for yarn feeding is provided at the bottom of an automatic winding machine in which a number of individually driven winding units are arranged in parallel.

An example of such an automatic winding system will be explained with reference to FIG. In FIG. 4, the automatic winding machine 1 is constructed by arranging a large number of winding units 11 that can be driven by a single spindle in parallel. A tray circulation conveyor 2 is provided below the automatic winder 41!1.

1 Tori Uni 7) 11 is from the upstream to the downstream of the thread path,
Ring guide IIA, feed roller IIB, filler 11C that is a thread detector, oiling roller IID for applying oil, and tensioner IIE for applying tension.
The traverse device 11F for traversing, the touch roller 11G driven by rolling contact with the package, and the cradle arm IIH for holding the paper tube are arranged in this order, and the yarn is fed from the yarn feeding package 4 on the tray 3. It is unrolled and rolled back into a full package 5. And full tube package 5
are transferred to the discharge conveyor 8 by the automatic doffing truck 7. The tray circulation conveyor 2 is connected to the automatic winding machine 1.
A U-shaped stock conveyor 21 located at one end of the
Connected to the yarn feeding conveyor 22 on the rear side of the automatic winding machine 1, the return conveyor 23 on the front side of the automatic winding machine 1, and the yarn feeding conveyor 22 and the return conveyor 23 on the lower side of each winding unit) 11. and a communication conveyor 24, forming a circulating conveyor as a whole. Next, the operation of this tray circulation conveyor 2 will be explained. A worker located on the stock conveyor 21 removes the empty paper tubes 6 from the tray 3 containing the empty paper tubes 6 sent from the return conveyor 23 to make an empty tray 3A, and places the empty paper tubes 6 on the box carrier 25. Collect inside. At the same time, the yarn feeding package 4 is removed from the peg stand 26.
is inserted into the extraction tray 3 to form a yarn feeding tray 3B. Then, as shown in the drawing, this yarn feeding tray 3B is once transferred to the sudock conveyor 21 by the stomper 21A.
Stocked on top. Next, in the winding unit 11, the empty paper tube holding tray 3 is moved by the operation of the stopper 24A.
When the yarn is discharged, the arm 24B opens toward the yarn feeding conhair 22 due to springback or the like. At the same time, the stopper 21A operates to send one yarn feeding tray 3B to the yarn feeding conveyor 22, and the arm 24B moves this yarn feeding tray 3B to the yarn feeding conveyor 22.
Take in B. By repeating the above operations, the circulation is repeated so that two yarn feeding units 1 and 3B are always located in the winding unit 11 (one at the winding position and the other at the reserve position). ing.

Incidentally, in this type of automatic winding system, switching of types is often performed. For example, in the renovation of dyed packages, there is a case where a red package is changed to a blue package.

However, since each winding unit is driven independently and the timing of discharging full packages is different, simply switching the type of yarn feeding packages supplied from the stock conveyor 21 does not allow the red package to be replaced with the full package on the discharge side. and the blue package will be mixed.

Therefore, a method shown in FIG. 5 has been known as a method for switching types to avoid mixing.

The method shown in Fig. 5 is a method in which when switching from a red package to a blue package in an automatic winding system with 52 winding units, the switch is first made through a state in which 52 x 2 empty trays 3A are loaded. It is. In addition, 21
22 is a stock conveyor, 22 is a supply conveyor, and 23 is a return conveyor. First, in FIG. 5(a), the normal mode in which the red yarn feeding tray 3C is held and the empty tray 3A is ejected is changed to the switching mode in which the red yarn feeding tray 3C is ejected and the empty tray 3A is held. The lifting truck (hereinafter abbreviated as AD) is brought to a stopped state.

Then, an empty tray 3A is prepared on the stock conveyor 21. In FIG. 5(b), the replacement is not done for all the spindles simultaneously, but for every two spindles (in the illustrated example, every two spindles). In other words, the number of trays stored in the stock conveyor 21 is small (for example, 16) compared to the number of spindles, and many empty trays 3 are stored at each time.
This is because A cannot be sent. Therefore, the above-mentioned mode switching is performed sequentially. In Fig. 5(C), after all the spindles are set to empty tray 3A (52X2=10
4 pieces), Stock conveyor No. 21 Blue yarn feeding tray 3D
Stock up on. In FIG. 5(d), the mode is sequentially switched from the switching mode in which the red yarn feeding tray 3C is ejected and the empty tray 3A is held to the normal mode in which the blue yarn feeding tray 3D is held and the empty tray 3A is ejected. , the empty tray 3A is replaced with the blue yarn feeding tray 3D. At this time, the AD is returned to the operating state, and threading is sequentially performed. Then, as shown in FIG. 5(e), all spindles are set to the blue yarn feeding tray 3D and normal operation is resumed.

[Problem to be solved by the invention]

The type switching method in the automatic winding system described in the prior art has the following problems. First, since the winding operation is stopped during the replacement period shown in FIGS. 5(a) to 5(d), production efficiency decreases. For example, in the case of 52 spindles, it takes about one hour to replace them, and the machine remains stopped during this time.

Furthermore, since the red packages shown in FIG. 5(a) are discharged even in the process of being rewound, the amount of lost packages increases, and production efficiency also decreases in this respect.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and its purpose is to provide a product type changeover method that improves production efficiency by suppressing the occurrence of operational stoppages and loss packages. This is what we are trying to provide.

[Means to solve the problem]

In order to achieve the above object, the switching method of the present invention provides a tray circulation conveyor for yarn feeding at the lower part of an automatic winding machine in which a number of independently driven winding units are arranged in parallel. In the type switching method of changing the type of yarn fed by a conveyor, before switching, dummy trays in which dummy pan cages that cannot be pulled out are inserted are sequentially supplied in the same number as the number of units, and the dummy trays are placed at the winding positions of all units. After being positioned, the dummy trays are ejected all at once.

[Effect]

The dummy package is visually detected as having a package, but since the thread cannot be pulled out, the automatic doffing device (AD)
When the pick-up operation fails, the automatic doffing device (AD) moves to the next spindle and sequentially threads and doffs the type before switching. By repeating the above operations and supplying the same number of dummy trays as the number of units and the subsequent supply of yarn feeding trays of the switching type, the dummy trays are positioned at the winding positions of all units, and the yarn feeding tray of the switching type is placed in the reserve position. Once located, the machine will stop. Then, when the dummy trays are ejected all at once, simultaneous switching is performed.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a procedure diagram showing the type switching method of the present invention, Fig. 2 is a diagram showing the operation of the dummy tray, and Fig. 3 is an automatic doffing device (
It is a block diagram showing operation of AD).

Prior to explaining the procedure diagram of FIG. 1, a dummy tray used in the type switching method of the present invention will be explained with reference to FIG. In FIG. 2(a), a dummy tray 3E is obtained by inserting a dummy package 9 into the tray 3, and is judged to be a normal package in appearance. That is, the dummy package 9 is a wooden hollow disk or the like, and the photo sensor 10 is
It is determined that the package is present. If it is a normal package 5, as shown in FIG. 2(b), the piston 3F
A thread Y is hung at the tip, and the piston 3 is moved by air.
Due to the elongation of F, thread Y passes through ring guide IIA. Then, as shown in Fig. 2(c), the ring guide II
The thread Y that has passed through A is sucked into an air sucker 31A of a pick-up device 31 installed in an automatic doffing device (AD). Then, as shown in FIG. 2(d), the chuck 31B
The thread Y is gripped by a thread attachment device (not shown) and carried to a slit portion of an empty paper tube held by a cradle arm.

However, since there is no thread in the dummy tray 3E, it is determined that the lead-out operations shown in FIGS. 2(b) to 2(d) have failed.

Next, a method for switching types using the above-mentioned dummy tray 3E will be explained with reference to FIG.

The method shown in FIG. 1 is a method in which a dummy tray 3E is interposed in the middle when switching from a red package to a blue package in an automatic winding system having 52 winding units.

In addition, 21 is a stock conveyor, 22 is a supply conveyor,
23 indicates a return conveyor.

First, in FIG. 1(a), after the supply of the red tray 3C is completed, a dummy computer cage is inserted into the tray instead of the red package to form a dummy tray 3E. That is, a dummy package is prepared on a peg stand or the like, and this dummy package is used when changing the product type, so it is easy to distinguish between the product types and there is less risk of confusion. Next, Figure 1 (
In b), after supplying 52 trays 3E,
Supply the blue yarn feeding tray 3D. Next, Figure 1 (C)
In this case, when the dummy tray 3E is in the winding position, the above-mentioned output is impossible, and the dummy tray 3E remains without being ejected. Note that the normal mode at this time has been switched to the switching mode. This switching mode is such that normally if the first operation fails, the second operation is performed, but at the time of switching, if the first operation fails, the next operation is performed.
Usually, if the pick-up operation fails twice, the yarn feeding tray at the reserve position is used, and when switching, the yarn feeding tray at the reserve position is not used. The conventional switching mode shown in FIG. 5 sequentially reverses the handling of empty trays and yarn feeding trays, but the switching mode of the present invention only changes part of the criteria, and the control sea fence is simplified. ,
Control panel operation for switching is also easy. Figure 1(a)~
During (C), the AD continues to thread the red tray 3C and doff the full packages while moving. Then, as shown in FIG. 1(d), all the winding positions are in the dummy tray 3E, and the reserve position is filled with the blue tray 3D, and the machine is in a stopped state (a state in which each winding unit is stopped).
. After confirming this state, as shown in FIG. 1(e), the operator operates the winding position-simultaneous discharge switch (the switching mode is also canceled at the same time). Then, the dummy trays 3E are discharged all at once to the return conveyor 23, the blue tray 3D at the reserve position enters the winding position, and the AD sequentially performs the threading work. Then, in FIG. 1(f), while returning the package on the dummy tray 3E to the peg stand (not shown), insert the blue package into the tray to change it to the blue tray 3D. When the dummy tray 3E disappears, the work is completed. do.

In the above-described type switching method, during the period from (1a) to (f) in Figure 1, the AD continues to move and work, and after completing the rewinding of the red tray 3C, the switching is performed simultaneously. There is almost no operation stoppage due to this, and there is no loss of red packages.

Next, an example of the operation of the AD used in the method of the present invention will be explained with reference to FIG. While traveling, the AD detects the full indication of each winding unit, moves toward that winding unit (block 32), decelerates before it approaches (block 33),
It stops in front of the winding unit and positions it (block 34). Then, doffing is performed by taking out the full tube (block 35) and attaching the empty paper tube (block 36), and the empty paper tube is driven in preparation for the next winding (block 37). At the same time, the yarn is taken out from the yarn supply package (block 38), and yarn is attached to the empty paper tube being driven (block 39). Then, it is checked whether the yarn is traveling by the filler (block 40), and if it is OK, the positioning is released (block 41), and the yarn starts traveling toward the next winding unit (block 42). Even if the answer is NO, the machine simply issues an alarm (block 43), releases the positioning (block 41), and starts traveling toward the next winding unit (block 42).

The above AD operation is the basis, and this basis remains the same in the product type switching method of the present invention.

For example, when replacing the tray with the dummy tray 3E in FIG. 1(C), doffing of blocks 35 to 37 is performed as usual. However, the meddling block 38 of the dummy tray 3E
), the filler detects the absence of yarn (block 40) and issues an alarm (block 43). When this alarm (block 43) is issued for all the weights, the state shown in FIG. 1(d) occurs, and the AD has nothing to operate on. After the worker confirms this condition, simultaneous switching is performed.

〔Effect of the invention〕

In the switching method of the present invention, a tray circulation conveyor for yarn feeding is provided at the bottom of an automatic winding machine in which a number of independently driven winding units are arranged in parallel. In the product switching method of switching products, before switching, dummy trays into which non-extractable dummy packages are inserted are sequentially supplied in the same number as the number of units, and after the dummy trays are positioned at the winding positions of all units, the 1. It emits rays. Therefore, since the dummy package cannot be pulled out, the AD moves to the next spindle, and sequentially threads and doffs the product before switching, and the dummy tray is located at the winding position of all units, and the product for switching is placed in the reserve position. When the yarn feeding tray is positioned, the machine stops.

Then, when the dummy trays are ejected all at once, simultaneous switching is performed. With the above switching method, there is no need to stop operations for switching other than when discharging dummy trays all at once, and all the products before switching are also rewound, so there is no loss of packages, and production efficiency is improved compared to the conventional switching method. can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a procedure diagram showing the product type switching method of the present invention, FIG. 2 is a diagram showing the operation of the dummy I-ray, FIG. 3 is a block diagram showing the operation of the automatic doffing device (AD), 5. The figure is a perspective view showing an automatic winder and its tray circulation conveyor, and FIG. 5 is a procedure diagram showing a conventional product type switching method. 1... automatic winding machine, 3... tray, 3C... red tray, 3D... blue tray, 3E... dummy tray, 2-) lay circulation conveyor, 9... dummy package, 11... Winding unit, 21... Stock conveyor, 22... Yarn feeding conveyor, 23... Return conveyor.

Claims (1)

[Claims] (1) A tray circulation conveyor for yarn feeding is provided at the bottom of an automatic winding machine in which a number of individually driven winding units are arranged in parallel, and the type of yarn fed by the tray circulation conveyor is switched. In the switching method, before switching, dummy trays with dummy packages that cannot be taken out are sequentially supplied in the same number as the number of units, and after the dummy trays are positioned at the winding positions of all units, the dummy trays are ejected all at once. Characteristic type switching method.