JP2820007B2 - Exit device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning device for spinning a yarn end of a spinning bobbin or the like and supplying the yarn end to a winder or the like.

[0002]

2. Description of the Related Art When a spinning bobbin produced by a spinning machine is supplied to each winding unit of a winder, the bobbin is subjected to a spinning treatment so that the yarn end is easily caught.

A conventional tapping device is disclosed in Japanese Patent Application Laid-Open No. 61-155.
As disclosed in Japanese Patent No. 171, a bobbin is intermittently moved to a number of stations by a rotating plate, and a bottom bunch or a top bunch is sequentially unwound at that station, and the unwound yarn end is connected to a bobbin shaft. It is inserted into the hole to perform the yarn end processing.

[0004]

However, in this tapping device, the bobbin is moved by a rotating plate for tapping, so that the device tends to be large in size, and the unwinding and unwinding of the bottom bunch and the top bunch at each station are respectively performed. In order to simultaneously perform the yarn feeding process of the wound yarn end at the same timing, it is necessary to determine the timing of the intermittent movement according to the processing with the lowest efficiency among the stations, and it is difficult to increase the productivity. Further, even if the processing at the upstream station fails, for example, even if the bottom bunch cannot be unwound, there is a problem that the tapping processing is performed as it is on the downstream side.

Therefore, the present invention provides a compact and
The present invention has been devised to provide a tapping device that can perform tapping processing efficiently and reliably at a location.

[0006]

SUMMARY OF THE INVENTION According to the present invention, an airflow generating means and an airflow generated by the airflow generating means are controlled so as to follow the surface of the yarn layer of the bobbin.
URN surrounding a airflow control member for lowering the bobbin lower end position, the gas flow yarn end finding device smell cutting means for cutting the thread drawn from the thread layer is provided on the airflow control member by
Based on the yarn end detection of the exit detection sensor.
The rise of the flow control member from the bobbin lower end position is
The distance from the head to the cutting means is greater than the bobbin length
The length of the thread end to be inserted into the bobbin shaft hole
Stop at the cutting position to be cut, and
The thread is cut by means .

[0007]

According to the above construction, the air flow strongly acts on the bobbin yarn layer surface, and the yarn ends are dissociated from the yarn layer by this air flow. To cut the drawn yarn, the airflow control member that rises from the lower end of the bobbin so that the yarn end has a predetermined length is removed from the bobbin.
The distance from the cutting head to the cutting means is shorter than the bobbin length
Length of the thread to be inserted into the bobbin shaft hole
Stop at the cutting position where
Cut the thread .

[0008]

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

FIGS. 1 and 2 show an embodiment of a tapping device according to the present invention. In this tapping device, a suction pipe 9 serving as an air flow generating means provided at a predetermined position (a tapping position P) of the tapping transfer path 2, and suction air from the suction pipe 9 follows the surface of the yarn layer 15 of the bobbin 1. (Air flow control member) 5 and a shutter cutter 7 provided in the cylinder 5 and serving as cutting means for cutting the yarn drawn out of the yarn layer 15 by suction air.

The outlet transfer path 2 transfers the bobbin 1 upright on the transfer tray T, and is provided along the round belt 31 contacting the lower surface of the tray T and along both sides of the round belt 31. The tray T includes a bottom guide plate 32 for receiving and guiding both sides of the bottom of the tray T, and an upper guide plate 34 for regulating and guiding the peg portion 33 of the tray T. Note that a flat belt may be used instead of the round belt 31. At the exit position P, a stopper (not shown) for stopping the tray T and a tray sensor 4 for detecting the presence or absence of the tray T are provided. On the upstream side,
A discriminating device for discriminating whether or not the bobbin 1 can be rewinded by the winder is provided, and it is determined that the bobbin with the minimal residual thread, the empty bobbin, and the empty tray cannot be rewinded.

The suction pipe 9 is attached to an upper side surface of a main body (housing) U of an erecting device which is erected corresponding to an evacuation position P, and has a base end connected to a source of suction air (a pump or the like). At the same time, the other end is bent downward. And the cylindrical body 5 is provided at the lower end of the suction pipe 9.
It is connected via a bellows hose 6 and formed so as to be coaxial with the bobbin 1 stopped at the outlet position P.

An arm 10 is attached to a side portion of the cylindrical body 5, and the arm 10 extends through a vertical slit 11 into the apparatus main body U, and a vertical guide rod 12 fixed in the apparatus main body U. It is supported up and down freely. The extending end of the arm 10 is attached to a piston rod of a lifting / lowering air cylinder 14 installed on the fixed plate 13 of the guide rod 12. The lift air cylinder 14 is an ON / OFF switch of a lift electromagnetic valve 17a and a lower electromagnetic valve 17b provided in the middle of an air supply hose (not shown).
As a result, the cylinder body 5 moves up and down via the arm 10.

The shutter cutter 7 comprises an upper plate 7a and a lower plate 7b mounted in the middle of the cylindrical body 5, and a fixed cutter 3 and a movable cutter 19 serving also as a shutter provided therebetween. . Holes 8a, 8b communicating with the suction pipe 9 are formed in the upper and lower plates 7a, 7b. As shown in FIG. 3, the movable cutter 19 has a substantially semicircular shape larger than the holes 8a and 8b , and one end thereof is rotatably supported by one end of the fixed cutter 3 by a vertical pin 61. One end of the movable cutter 19 is appropriately bent and extended, and the rod 20a of the shutter actuator 20 is connected to the distal end of the extended portion 62. That cut the yarn coming into rocked to match chewing movable cutter 19 to the fixed cutter 3 tubular body 5 by extension of the rod 20a, the holes 8 by the surface portion 63 at the same time
The movable cutter 19 is expanded by retracting the rod 20a to open the bobbin 1 larger than the outer diameter thereof. The shutter actuator 20 is attached to a support plate 64 formed on the cylindrical body 5. Also Inkona side of the bent portion of the suction pipe 9, V-shaped guide 21 is provided to guide the sucked yarn end in a predetermined position, yarn end finding detecting sensor 22 is provided facing to the yarn path Y _p (Figure 1
(B)). The output of the sensor 22 operates a shutter-cutter solenoid valve 23 for driving the shutter actuator 20.

As shown in FIG. 4, the cylinder 5 descends from the standby position (a) at the upper end of the stroke to a position (b) close to the head of the bobbin 1 and a position (c) at the lower end of the bobbin. And stops at the cutting position (d) between the standby position (a) and the head proximity position (b). This cutting position (d) is a position where the distance x from the head of the bobbin 1 to the shutter cutter 7 is appropriately shorter than the length L of the bobbin 1 (L> x). For example, if the bobbin length L is 180 mm, the distance x is 140 mm. That is, the distance x is to be set as the fixed length of the yarn end inserted into the bobbin shaft hole. The distance δ between the lower end of the cylindrical body 5 and the upper end of the head of the bobbin 1 at the head proximity position (b) may be about 10 to 15 mm. And a bobbin detection sensor 16 for detecting the chess part 15a of the above.

The outlet pipe 8, which is a connection between the bellows hose 6 and the suction pipe 9, is supported by a bracket 53 attached to the outlet device main body U. At the lower end of the long plate 54 suspended from the bracket 53,
A head holding lever 27 for holding the yarn unwound from the bobbin 1 and sucked by the suction pipe 9 onto the bobbin 1 and an actuator 28 thereof are provided. Head holding lever 27
Is swung by the actuator 28 so as to contact and separate from the head of the bobbin 1. In addition, in the body U of the taping device,
A bunch removal blast nozzle 25 for removing the top bunch 24 on the upper part of the bobbin 1 is provided, and a blast solenoid valve 26 for intermittently supplying air to the blast nozzle 25 is provided. This blast nozzle 25
It is used only for the bobbin 1 of the top bunch 24 and is not used for the bottom bunch.

On the other hand, when the bobbin 1 is unwound, particularly when the bobbin 1 is unwound by lowering the cylindrical body 5, the bobbin 1 comes out of the tray T at the unwinding position P of the unloading transfer path 2. In order to prevent the above problem, a bobbin holding lever 29 for holding a portion of the lower part of the bobbin 1 where the thread is not wound and an actuator 30 thereof are provided. Further, a suction pipe 35 for drawing the cut fixed-length yarn Y into the shaft hole of the bobbin 1 when the fixed-length yarn is cut by the shutter cutter 7 is provided below the bottom guide plate 32 at the outlet position P. Is provided. The upper end opening of the suction tube 35 is directed toward the center of the lower surface of the tray T at the outlet position P. In the middle of the suction tube 35, a suction shutter 35a for introducing a hole is provided.
The shutter 35a is opened and closed by a solenoid 35b. On the upper guide plate 34 at the exit position P, yarn blowing nozzles 50 are provided on both sides of the bobbin 1. In each nozzle 50, two injection holes 51a for injecting blast air obliquely upward and downward toward the bobbin 1 are opened, and the blast air of the nozzle 50 causes, for example, a yarn hanging down from the yarn layer 15 of the bobbin 1. Is blown out of the bobbin pressing range of the bobbin pressing lever 29.

Next, the operation of this embodiment will be described.

By the time the tray T reaches the tapping position P along the tapping transfer path 2, the discriminating device determines whether or not the bobbin can be rewound by the winder, that is, whether or not the tapping is necessary. In the case where the tapping is unnecessary, for example, in the case of a very small residual yarn bobbin, an empty bobbin, or an empty tray on which no bobbin is placed, the tapping operation is not performed by the tapping device, and passes through the tapping position P. On the other hand, in the case of the need for tapping, for example, in the case of a full bobbin after the spinning of a spinning machine or a bobbin with a residual thread discharged from the winder and refluxed (half bobbin or bead bobbin), the following tapping operation is performed. In the case of a full bobbin provided with a bottom bunch, the bottom bunch is unwound by a bottom bunch cut station provided upstream of the exit position P.

When the tray T is transported to the exit position P, the tray T is stopped by the stopper. When the tray sensor 4 detects the tray T, blast air is injected from the yarn blowing nozzle 50, and subsequently, the bobbin holding lever 29 (actuator 30) is operated and the lower part of the bobbin 1 is moved to the tip of the bobbin holding lever 29. Is held down by Thus, even if a suction force acts on the bobbin 1, the bobbin 1 does not fall out of the tray T. Before the bobbin 1 is pressed by the bobbin holding lever 29, the nozzle 5
Since the air is blown from 0, it is possible to prevent the yarn end from being caught between the bobbin holding lever 29 and the bobbin 1 and unsuccessful feeding is prevented.

Simultaneously with the operation of the bobbin holding lever 29, the actuator 20 is operated, the shutter cutter 7 is opened, and the suction pipe 9 and the cylinder 5 are in communication with each other, and rises along the yarn layer surface of the bobbin 1. An airflow (suction force) toward the inside of the cylinder 5 is generated. After the shutter cutter 7 operates, the cylinder 5 starts to descend at a short interval. When the cylinder 5 descends, the cylinder 5 and the bobbin 1 gradually approach each other, so that the airflow acting on the yarn layer 15 increases. When the cylinder 5 finishes descending to the lower end of the stroke, that is, the position (c) that substantially surrounds the entire bobbin 1, the ascent operation is started. By the time the cylindrical body 5 has finished ascending to the position (b) close to the bobbin head, if the bobbin is a normal full bobbin, almost all of the yarn ends will be sucked up into the suction pipe 9, but the fluff will be entangled and the yarn ends In some cases, it is stuck to the surface of the layer 15. In such a case, the sensor 22 does not detect the yarn end, and the cylinder 5 performs the lowering operation again, and the lowering and the raising of the cylinder 5 are repeated up to a total of three times. If the sensor 22 still does not detect the yarn end,
The stopper is released, and the tray T is paid out from the outlet position P. Note that the number of repetitions is not limited to three,
It may be performed only once or four or more times. The cylinder 5
The blast air of the yarn blowing nozzle 50 is stopped during a period from when the air starts to rise and when the air begins to descend next. This can be easily achieved by receiving signals from the electromagnetic valves 17a and 17b.

When the yarn end is detected by the sensor 22, the cylinder 5
Rises to the cutting position (d) and stops. When one type of bobbin 1 is processed, or when the lengths of the bobbins are not so different, the upper limit position of the cylinder 5 is set to the cutting position (d), and the outlet detection sensor 22 is operated immediately after the suction air is applied. If the end of the thread is detected, the cylinder 5 may not be lowered. When the cylinder 5 stops, the head holding lever 27 operates to abut the head of the bobbin 1 to hold the yarn connected between the bobbin 1 and the suction pipe 9, and the yarn is pulled out excessively from the yarn layer 15. To prevent The head holding lever 27 may be activated when the head holding lever 27 is raised to a predetermined height before reaching the cutting position (d). The point is that the cylinder 5 and the head holding lever 27 should not interfere with each other. Then, the solenoid 35b also operates at the same time as the operation of the actuator 28, the top hole suction shutter 35a opens, and a downward suction force acts on the shaft hole of the bobbin 1.

Here, the actuator 20 is operated to close the shutter cutter 7, and the yarn sucked from the bobbin 1 into the suction pipe 9 is cut by the shutter cutter 7 and the suction air is shut off. The yarn end connected to the cut bobbin 1 is sucked into the shaft hole of the bobbin 1 by the suction force of the suction tube 35. Since the distance x from the bobbin 1 to the shutter cutter 7 is set shorter than the length L of the bobbin 1, the yarn end Y sucked into the bobbin 1 does not extend to the bottom guide plate 32 through the tray T. .

Subsequently, the actuator 28 operates to return the head holding lever 27 to the original position, the bobbin holding lever 29 returns to the original position, and the suction shutter 35a
Closes. Thereafter, the stopper holding the tray T is released, the tray T is discharged from the discharging position P, and supplied from the discharging transfer path 2 to each winding unit of the winder.

In the case of a full bobbin provided with a top bunch, after the shutter cutter 7 is opened, first, blast air is sprayed from the bunch removal blast nozzle 25 toward the bunch winding portion of the bobbin 1 for a predetermined time. The bunch is unwound. Subsequently, the cylinder 5 starts to descend, and thereafter, the same operation as in the case of the bottom bunch is performed.

As described above, the yarn layer 15 of the bobbin 1 to be spouted is covered with the cylindrical body 5 and suction air is generated by supplying suction air to the cylindrical body 5, so that the surface of the yarn layer 15 is formed. The yarn end can be drawn out by a strong air current acting on the bobbin 1, and the bobbin 1 can be easily and efficiently and reliably discharged by one stop. Further, the configuration can be made compact, and space saving and cost reduction can be achieved. Since the shutter cutter 7 is provided on the cylindrical body 5 and the drawn yarn is cut at the cutting position (d), regardless of the height of the bobbin 1, for example, the standard bobbin length Even if the length is shorter, the length of the yarn end to be inserted into the shaft hole of the bobbin 1 can be appropriately secured. That is, the yarn end extends from the tray T and becomes entangled with the transport system,
It is possible to prevent an accident such as a stoppage of transport.

Further, the taping device of the present invention has a great advantage that processing can be performed regardless of the type and shape of the bobbin. That is, regardless of whether the bobbin is S-twisted or Z-twisted, bobbins having different lengths, and bobbins having different diameters (having different shapes), full bobbins and winding units produced by a spinning machine are required. Ejection can be performed on any of the half bobbin (small or beaded) bobbin discharged without thread breakage and yarn splicing, and the bobbin conveyed again due to unsuccessful ejection.
Furthermore, it is also possible to dispense a chess-cut bobbin and a bobbin that has been handed over by spinning, and to dispense a bobbin with either a top bunch or a bottom bunch.

It is more preferable to select the shape of the cylindrical body 5 according to the type and shape of the bobbin 1. The gap between the inner surface of the cylindrical body 5 and the surface of the yarn layer 15 of the bobbin 1 is preferably as small as possible (10 mm or less).
Under such circumstances, the shape of the cylindrical body 5 is not only a cylindrical shape having the same diameter from the upper part to the lower part of the bobbin 1,
The upper part may be shaped like an inverted flare according to the shape of the chess part 15a. Further, it may be formed of a fixed portion that covers the outer periphery of the bobbin 1 and an inverted flare-shaped movable portion that slides on the fixed portion and moves up and down according to the height of the chess portion 15a. In this case, the shutter cutter 7 is provided on the movable part.
The fixing portion is divided into two parts and connected to be freely openable and closable, and is substantially moved back and forth to a position surrounding part or all of the bobbin 1 by the opening and closing mechanism. Further, a nozzle may be provided in the cylinder to blow the blast air in order to facilitate the yarn of the bobbin 1 being released from the yarn layer.

The suction pipe 9 and the cylindrical body 5 are connected by a bellows hose 6 or the like, and even in a divided state, it is possible to control the air along the surface of the yarn layer of the bobbin. Further, instead of the bobbin holding lever 29,
For example, a plunger that moves forward and backward with respect to the lower end of the bobbin by a solenoid may be provided.

FIG. 5 shows an example in which the taping device A of the present invention is incorporated in an automatic winder W. In the figure, 40
Is an actual bobbin transport line for supplying the actual bobbin to the winder W, and 41 is an empty bobbin discharge line. The actual bobbin from the spinning machine is supplied from the actual bobbin supply line 42 to the tray T in an upright state. Bobbin discharge line 41
The empty bobbin conveyed from the bobbin is stripped of the minimal residual yarn from the bobbin by the stripper 43, and then the empty bobbin supply line 44
It is supplied to a spinning machine (not shown). Further, the half bobbin conveyed from the bobbin discharge line 41 is not processed by the stripper 43 and is directly returned to the return line 4.
5 is returned to the actual bobbin transport line 40.

The outlet transfer path 2 is formed so as to branch off from the actual bobbin transport line 40 and extend in parallel and then join. The outlet device A is provided in the middle of the outlet transfer path 2. Have been. In this case, on the upstream side of the tapping device A, the bobbin provided with the bottom bunch is
A rotary cutter device 46 for cutting the bottom bunch is provided. In the case of a top bunch, a searcher (a device for searching for and cutting a back wind of a bobbin) is provided instead of the rotary cutter 46. In the case of a bottom bunch, a rotary cutter device and a searcher may be provided side by side.

The feeding device A is provided with an auxiliary transfer path 2a as shown by a two-dot chain line in FIG.
Are connected in parallel to the outlet transfer path 2 and the auxiliary transfer path 2
a may also be provided. In this case, the full bobbin provided with the top bunch or the bottom bunch is discharged through the transfer path 2 for discharging, and the half bobbin or the bobbin whose discharging processing is unsuccessful is supplied to the auxiliary transfer path 2a and the discharging device is provided. A may be processed.

The bobbin after the tapping process is returned to the actual bobbin transport line 40 and supplied to the winder W. The bobbin for which the tapping process is unsuccessful is passed from the bypass line 47 to the empty bobbin discharge line 41, and the half bobbin is discharged. The tapping process is performed again together with the bobbin. Note that the tapping device A of the present invention may also be provided in the bypass line 47 to process unsuccessfully tapping bobbins.

FIG. 6 shows an example in which the tapping device A of the present invention is incorporated into an existing tapping device (for example, a device disclosed in Japanese Patent Publication No. 5-5746) connected to the winder W. The existing outlet device 48 is provided on the actual bobbin transport line 40, and the outlet device A of the present invention is provided on the bypass line 47 connecting the actual bobbin transport line 40 and the bobbin discharge line 41. In other words, the bobbin for which the taping process has not been successfully performed by the existing taping device 48 is subjected to the tapping process by the tapping device A of the present invention. In this case, the taping device A of the present invention is a winder W
It may be provided inside. Other configurations are the same as those in FIG.

[0034]

In summary, according to the present invention, the following excellent effects are exhibited.

The airflow control member covers all or a part of the yarn layer of the bobbin to be spouted. The airflow control member generates suction airflow by the airflow generation means, and the airflow control member is provided with cutting means. Cut off the control member from the bobbin head.
The distance to the cutting means is shorter than the bobbin length, and
Cutting position to adjust the length of the thread end to be inserted into the shaft hole of the
And cut the yarn with the cutting means at this cutting position.
Having a shall, by compact configuration, simply, and reliably perform yarn end finding process as a length of the yarn end in accordance with the length of the bobbin at the position.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a tapping device according to the present invention, wherein FIG. 1 (a) is an overall perspective view, and FIG.

FIG. 2 is a side sectional view of FIG.

FIG. 3 is a plan view showing the cutting means of FIG.

FIG. 4 is a side view for explaining the operation of FIG. 3;

FIG. 5 is a plan view showing an example in which the taping device of the present invention is incorporated in a winder.

FIG. 6 is a plan view showing an example in which the taping device of the present invention is incorporated in a winder together with an existing tapping device.

[Explanation of symbols]

 Reference Signs List 1 bobbin 5 cylinder (airflow control member) 7 shutter cutter (cutting means) 9 suction pipe (airflow generating means) 15 thread layer T tray

Claims (1)

(57) [Claims] 1. An airflow generation means, and an airflow generated by the airflow generation means is controlled so as to be along the yarn layer surface of the bobbin.
Together with the lower end of the bobbin that almost surrounds the entire bobbin.
And a airflow control member which later, in the yarn end finding device cutting means for cutting the thread drawn from the thread layer is provided on the airflow control member by a gas flow, the yarn end finding detection sensor yarn
Based on the edge detection, the lower end of the bobbin of the airflow control member
From the bobbin head to the cutting means
Is shorter than the bobbin length, and
Stop at the cutting position to adjust the length of the thread end to be inserted.
At this cutting position, the yarn is cut by the cutting means.
And a tapping device.