JP2522151Y2 - Yarn splicing control device for automatic winder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a yarn splicing control device for an automatic winder, and particularly to a new bobbin based on both sensor outputs of a sensor at a bobbin standby position and a sensor for detecting the absence of a bobbin-side yarn. The present invention relates to a yarn splicing control device for an automatic winder that performs a supply operation of a yarn.

[Related Art] In an automatic winder in which a plurality of winding units are arranged side by side, a type having a yarn joining device in each winding unit, a type in which a work vehicle having a yarn joining device travels along the winding units, and the like are known. ing.

In such an automatic winder, when a defective portion such as a slab is detected in a running yarn, the yarn is forcibly cut, and the upper yarn on the package side and the lower yarn on the yarn supplying bobbin are spliced to form a yarn. Defects have been removed.

When the piecing is performed by the above-described piecing operation, normal winding is performed again. When the piecing is not performed even after the set number of piecing operations, it is determined that the unit is not a piecing unit, and the piecing is disabled. Was displayed, winding was stopped, and the operator waited for processing.

Therefore, in this automatic winder, when the supply of the yarn supplying bobbin is insufficient, it is always determined that the yarn splicing is impossible, and the winding is stopped. In this case, even if the bobbin is supplied again, the operation remains stopped, and the observer finds the unit. Until operation is stopped, and the operating efficiency is reduced. Therefore, in order to improve the operation efficiency, the applicant of the present invention first described, "In one cycle of the yarn joining operation of the winding unit, the presence or absence of the upper yarn and the lower yarn is detected, and the yarn is attached to the winding unit after the yarn joining operation is completed. "A yarn splicing control method for displaying a splicing failure or the like" and "a tray-type winder in which a nozzle for ejecting air can be arranged at the center of the winding position without hindering transfer of the tray to the winding position" ( JP-A-59-69371) was proposed.

[Problems to be Solved by the Invention] However, in the tray type winder, the supply operation of a new bobbin, that is, the so-called cup change operation, is unconditionally performed even when there is no yarn on the yarn supply side bobbin during the yarn splicing operation. I was going. For this reason, in this winder, even when there is no tray for the next bobbin at the standby position in the unit, the cup change operation is executed to perform the yarn joining operation. Therefore, in this case, since the winder has no yarn on the yarn feeding side, the yarn splicing operation is always disabled, and the yellow button, which is the yarn splicing non-display button used as the yarn splicing non-display device, protrudes. Therefore, at this time, unless the operator or the like presses the yellow button, the yarn joining operation is not performed, which causes a reduction in the operation efficiency of the unit.

The present invention was created in view of the above circumstances,
The purpose is to provide a yarn splicing control device for an automatic winder that can prevent the subsequent operation of the unit from being completely stopped due to yarn splicing failure that occurs when there is no yarn in the yarn feeding side bobbin or a tray in standby. To provide.

Means for Solving the Problems To achieve the above object, a yarn splicing control device for an automatic winder according to the present invention determines whether or not there is a yarn on a yarn feeding bobbin side during one cycle of a yarn splicing operation of a winding unit. A bobbin-side yarn sensor for detecting, a standby tray sensor for detecting the presence or absence of a tray of the yarn supplying bobbin at the bobbin standby position, and a yarn splicing failure when a yarn absence signal is input from the bobbin-side yarn sensor during yarn splicing. And a control circuit which waits for a signal indicating the presence of a tray on the yarn supplying bobbin of the standby tray sensor, performs a cup change, and then performs a yarn splicing operation. It is a thing.

[Operation] According to the yarn splicing control device of the automatic winder of the present invention configured as described above, the bobbin-side yarn sensor detects the presence or absence of the yarn of the yarn supplying bobbin in one cycle of the yarn splicing operation of the winding unit. When yarn absence is detected and yarn splicing fails, the control circuit determines that there is no yarn on the yarn supply side, sets the tray in a standby state, and then performs a cup change when a standby tray sensor detects a yarn supply bobbin. By performing the piecing operation, useless piecing is not repeated, and by restarting the piecing operation without stopping the unit,
Operation efficiency can be improved.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an example of a winding unit.
-59167. Immediately, a support shaft 2 and a suction duct 3 are installed between the side frames 1, and a winding unit 4 is supported on the support shaft 2 so as to be pivotable. During operation of the automatic winder, the unit 4 is also placed on the duct 3 and is appropriately fixed.

In this winding unit, the yarn Y pulled out from the bobbin 5 on the tray 7 which is a bobbin transport medium can be appropriately wound by the tensor 10 via the balloon breaker 8 and the yarn guide 9 to wind the yarn from the yarn supplying bobbin 5 to the package 6. The tension of the tensor 10 causes the traversing drum 12 to take up the package 6 which is rotated by the traverse drum 12 through the slab catcher 11.

At this time, when the yarn defect in the yarn is detected by the slab catcher 11, the cutter incorporated in the slab catcher 11 operates to forcibly cut the running yarn. At this time, while the winding is stopped, the suction mouth 13 is operated, so that the upper thread of the package 6 is guided to the yarn splicing device 14, and the relay pipe 15 connects the lower thread of the bobbin 5 to the yarn splicing device 14.
Lead to. At that time, the yarn is spliced by the yarn splicing device 14, and if the yarn splicing is successful, winding is started again. A plurality of such winding units 4 are arranged side by side in the direction perpendicular to the paper surface of FIG. 3 to constitute one automatic winder.

On one side of the winding unit 4, a conveyor belt 16 for supplying a bobbin is laid, and on the other side, a conveyor belt 17 for transporting an empty bobbin discharged from the unit and a bobbin with a residual thread is laid. A tray transfer passage 18 is formed between the conveyor healds 16 and 17 by a rotating disk 19 and guide plates 20a and 20b and the like, and the yarn is drawn out from the bobbin 5 positioned at the winding position 21.

The details of the tray transfer passage 18 are shown in FIG. Guide plates 20a and 20b forming a bent passage 63 of the tray 7 are fixed to the unit base between the two conveyors 16 and 17, and a rotating disk 19 is attached to the lower surface of the carry-in passage 63a. The lower surface of 63b is attached by a bent bottom plate 20a-1 of the guide plate 20a. Reference numeral 60 denotes a proximity switch for tray detection, which detects passage of the tray 7 from when the tray 7 reaches the carry-out passage 63b to the carry-out passage 63b.

The yarn splicing device 14 basically includes a yarn splicing member 101, a clamp device 102, control nozzles 103 and 104, a yarn pulling lever 10
5. The yarn cutting devices 106 and 107 and the yarn supporting devices 108 and 109, and the suction ports at the tips of the first and second suction arms 13 and 15 pivotally move above the yarn splicing device 14 so as to intersect with each other. Yarn end YB on the package side and package 6 side,
The YP is sucked, moved to the outside of the yarn joining device 14, and stopped.
The operations of the first and second suction arms 13 and 15 are not performed at the same time, and operate with some time lag.
That is, first, when the yarn end YP on the package 6 side is turned by the suction arm 13 to the outside of the yarn joining device 14 and stopped, almost simultaneously, the turning lever 25 of the yarn support device 109 on the package 6 side is moved by a control cam (not shown) or the like. It turns and comes into contact with the fixed position fixed support block 26 and stops. At this time, the yarn Y moves while being supported by the hook portion 25b of the turning lever 25, and is held between the support block 26 and the turning lever 25.

On the other hand, while the swivel lever 25 is operating, the fixed guide
The slab catcher 11, which is fitted into the guide groove 27 along the inclined surfaces 22a and 23a, 24a of the rotating guides 22 and the swiveling guides 23, 24, checks the presence or absence of the yarn Y and the suction arm by the slab catcher 11 installed at the same position as the guide groove 27. 13 incorrectly causes two or more yarn ends Y
It is checked whether P has been sucked. After confirming the yarn Y, the revolving guides 23 and 24 are pivoted counterclockwise around the support shaft 28 as a fulcrum by a control cam (not shown) or the like as shown in FIG. The guides 23 are further removed and fitted into the escape grooves 23b, 24b of the revolving guides 23, 24.

Further, the yarn end YB on the bobbin 5 side is sucked by the suction arm 15 almost at the same time as the swiveling guides 23 and 24 are swung, swivel in the opposite direction to the suction arm 13, move to the outside of the yarn splicing device 14 and stop. I do. Suction arm 15
Almost simultaneously with the stop of the rotation of the support plate 2 of the yarn support device 108.
9a is moved along a guide plate 30 by a control cam or the like (not shown) while supporting the thread Y in the same direction as the turning lever 25.
At this time, the thread Y is held between the support plate 29a and the support block 29b by contacting the support block 29b fixed at the fixed position. At this time, as shown in FIG. 4, the yarn YB is swung by the swiveling guides 23 and 24 so that the hook portions 23c and 2 near the guide tip end.
4c, the check by the slab catcher 11 is performed after the completion of the piecing.

A yarn splicing member 101 is provided substantially at the center of the yarn splicing device 14, and yarn guide pins 31 and 3 are provided on both sides of the yarn splicing member 101.
2, clamp device 102, control nozzles 103, 104 and thread guide 3
3, 34, furthermore, thread cutting devices 106, 107 and fork guides 35, 36 are sequentially arranged, and a yarn shifter comprising a support shaft 37 and levers 38, 39 which pivot around the support shaft 37 at the side of the yarn joining member 101. A lever 105 is provided. The yarn pulling lever 105 detects the slab of the yarn Y by the slab catcher 11 and cuts the yarn with a cutting device (not shown), and the suction arms 13 and 15 operate to connect the yarn ends YP and YB to the outside of the yarn joining device 14. After guiding the yarn ends YP and YB, the yarn ends YP and YB are guided toward the yarn joining device 14. The turning range of the yarn pulling lever 105 is determined by the fork guide 35 and the yarn supporting member 1.
Stopper 40 with a substantially V-shaped cross section installed between 08
Stop in contact with. Therefore, the turning range of the thread pulling lever 108 can be adjusted by adjusting the position of the stopper 40.

The yarn splicing control in the winder having such a yarn splicing device will be described with reference to FIGS. 1 to 6 and the flowchart of FIG.

Now, a yarn break occurs, and piecing is started (step 1). Then, during one cycle of the yarn splicing operation, the presence or absence of the upper and lower yarns is inspected (steps 2 and 3). In the case of the above-described yarn splicing device, Step 2 is performed when the yarn YP on the package side is introduced into the slab catcher 11, and Step 3 is performed.
Is performed when the lower thread is introduced into the slab catcher 11 after the splicing.

Next, it is determined whether both the upper thread and the lower thread are “present” by the time one cycle of the thread joining operation is completed, and if both the upper thread and the lower thread are “present”, the thread joining is performed. After the operation is completed, if the traverse drum starts and the piecing is successful, winding starts (steps 4 and 5).

On the other hand, when it is determined that there is no yarn during the inspection of the upper yarn, that is, the yarn on the package side during the yarn splicing operation, "+1" is input to the first counter (CNTO1) (step 6). A set value n is input in advance to the counter (CNT1), and the value n is set as the number of yarn splicing errors.

Next, it is detected that the yarn joining error due to the absence of the upper thread has been repeated n times (step 7). When it is detected that the yarn joining mistake has been repeated n times, a yarn joining disable display command is issued (step 8). At this time, the yarn splicing operation is no longer repeated, and the unit stops, and waits for the operator's processing. In other words, the absence of the thread on the package side means that the thread has fallen on the end face of the package, or that the thread end is stuck in the surface of the thread layer, and it is impossible to pull out the thread end depending on the suction mouth 13. It is. Therefore, in this case, after the operator's rework,
Restart the yarn joining operation again. In addition, as the above-described yarn splicing non-display means, for example, a yellow button provided as a thread splicing non-display button 41 in FIG.
It stops the piecing and informs the operator.

On the other hand, in FIG. 6, when the slab catcher 11 detects that there is no lower thread during the yarn joining operation cycle, "+1" is input to the counter (CNTO2) (step 9).
Then, similarly to the first counter, the number of continuously occurring yarn splicing errors is also input to the second counter (CNTO2) as the set value n. Therefore, for example, if the set value n is set to n = 3, if the piecing fails three times due to the absence of the lower thread, the counter (CNTO2) becomes “+3”, and the piecing is no longer repeated and the piecing is disabled. The display is not displayed, and simply enters the yarn joining standby (steps 10 and 11). In this state, when the tray 7 is supplied to the unit after an arbitrary time, the yarn splicing operation is started again by the tray standby position signal (step 12). For the detection of the tray 7, a tray standby position signal can be obtained by providing a proximity switch for detecting the loading of the tray 7 in the tray passage of each winding unit as described above.

In this embodiment, a sensor is provided at the bobbin standby position, and a supply operation of a new bobbin, that is, a cup change operation is performed by a logical product (AND) circuit signal of the absence of the bobbin thread and the sensor at the standby position. The tray standby state can be executed, for example, by the sequence circuit shown in FIG. That is, if there is no bobbin thread at the bobbin thread detection timing, +1 is input to the counter CNTO2, and when the set value n is reached, the counter is counted up, the contact COTN2a is closed and the tray is in a standby state, and when the contact RA2 is closed by a tray standby position signal, AND circuit AND
Is sent to the tray standby position signal. At this time, when there is no thread on the bobbin side, the contact RA1 is closed, and in conjunction with this, the contacts CNTO1a and CNTO2a are also closed, and the bobbin-side thread absence signal and the tray standby position signal are input to the AND circuit AND. Therefore, at this time, a logical product output from the logical product circuit AND is output to the yarn joining solenoid, and the yarn joining solenoid SO2 is excited to start the yarn joining.

When the counter CNTO1 counts up without the upper thread, the contact CNTO1a closes, the solenoid SO1 for the thread splicing disable button is excited, and the yellow button 41 in FIG. 1 protrudes.

As described above, in the present embodiment, a cup change is possible when there is a standby tray, but when there is no standby tray (notching), the operation is stopped, that is, a cup change standby is performed.

In FIG. 6, both the counters CNTO1 and COTN2 are reset by the yarn running signal FW.

If the sensor provided at the standby position in the present embodiment does not detect a tray for a set time or longer, it is determined that normal bobbin supply is not being performed due to an abnormality in the tray transport conveyor or other causes, and the winder is determined. In some cases, an alarm lamp is lit at the end of the machine. Further, in the present embodiment, by detecting the tray to be on standby, when there is no tray, only the unit is stopped and the unit can be restarted immediately when the tray arrives.

[Effects of the Invention] As described above, according to the present invention, when the yarn splicing cannot be performed even after performing the yarn splicing operation a predetermined number of times, the new bobbin can no longer be used in the unit without repeating useless yarn splicing. Since it is possible to wait until it is supplied and restart the yarn splicing operation together with the supply of the new bobbin, the operation efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention, FIG. 2 is a view for explaining a tray transport section of the present invention, FIGS. 3 to 5 are views showing an embodiment of the present invention, FIG. FIG. 7 is a circuit diagram showing an embodiment of the present invention, and FIG. 7 is a flowchart showing an embodiment of the present invention. In the figure, 4 is a winding unit, 5 is a yarn feeding bobbin,
11 is a slab catcher, 60 is a standby tray sensor, and AND is a logical product circuit.

Claims (1)

(57) [Scope of request for utility model registration] 1. A bobbin-side yarn sensor for detecting the presence or absence of a yarn on a yarn supplying bobbin during one cycle of a yarn joining operation of a winding unit, and a standby tray sensor for detecting the presence or absence of a tray of a yarn supplying bobbin at a bobbin standby position. When a yarn absence signal is input from the bobbin-side yarn sensor at the time of yarn splicing, it is determined that yarn splicing failure has occurred due to the absence of yarn on the yarn supply side, and a tray standby state is set. A yarn splicing control device for an automatic winder, comprising: a control circuit for performing a yarn splicing operation after waiting and performing the cup change.