JPH0152302B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a type of fiber winding machine in which a plurality of winding units are installed in parallel. The present invention relates to a doffing method and device for automatically taking out and transporting empty bobbins and supplying empty bobbins.

Conventionally, this kind of doffing method was used for example in 1973.
As described in JP-A-144926 and JP-A-49-133633, the fully wound package is placed on the traverse drum in the same manner as in the winding work position, and the support from the cradle is released, and the package is removed from the cradle. The released package cage is rolled on an inclined guide plate and transferred to the rear transfer conveyor, and then the yarn from the package cage on the transfer conveyor to the traversing drum is introduced into the cutter using a yarn catching lever. It was disconnected.

In the conventional method described above, which cuts the thread after rolling the fully wound package backwards, the thread naturally unravels as the package rolls, but the rolling posture of the package remains unchanged. This is a rule, and as the thread rolls under various conditions, the thread at the ears may unravel and become loose, and for this reason, the thread cannot be introduced to the cutter even with the thread pulling action of the thread catching lever. The cutter is placed on the bobbin support side of the cradle to make it easier to handle the thread end for the next winding. Since the cutter is installed near the front end of the guide plate, the distance from the full package cage on the rear transfer conveyor to the cutter is quite long, and the yarn cut by the cutter also extends long and comes loose from the package cage, which is used to cut the package in the future. It was getting in the way of handling.

Incidentally, in the latter conventional example, the yarn is cut with the package once supported at the intermediate part of the guide plate in order to shorten the cut yarn, but in this case as well, the yarn is unraveled while the package is rolling. The thread being cut may become loose, and therefore the accuracy of introducing the thread into the cutter cannot be guaranteed, and of course the length of the cut thread is the length from the cutter to the package cage, so handling problems can be avoided. I can't.

The purpose of the present invention is to eliminate the above-mentioned conventional defects, and a doffing device runs over a plurality of fixed winding units, stops at a predetermined position in response to a full wind signal, and doffs. In the case where an empty bobbin is inserted at the same time, the fully wound bobbin is held in a cradle and lifted against the traversing drum at the time of full winding, and a gap is formed between the drum surface and the full bobbin.
Turn the thread guide lever to guide the thread connected to the fully wound bobbin to the end of the bobbin, cut the thread with the catch lever and hold the cut thread end on the supply pipe thread side, and then move the guide plate from the standby position. The first invention is a doffing method characterized in that a fully wound bobbin is released from a cradle by raising the bobbin, and furthermore, a doffing device runs over a plurality of fixed winding units, and a doffing device is moved over a plurality of fixed winding units, and a doffing device is moved to a predetermined position by a full wind signal. In the case where the bobbin is stopped at a position where the bobbin is doffed and an empty bobbin is inserted, the cradle for supporting the bobbin moves the full bobbin away from the traversing drum when the bobbin is fully wound, thereby forming a gap between the bobbin and the drum. It is arranged so that it rotates upward and returns to the old position when the full bobbin is discharged and an empty bobbin is replaced and supported, and the bobbin is placed in a standby position at one end of the outer side, and the drum and the full bobbin are moved at the appropriate time. A thread shifting lever that moves inside the gap toward the outer position of the other end of the bobbin to move the supply thread connected to the fully wound bobbin, and a cutting blade located at the end of the thread shifting lever in the direction of movement. A thread catching lever is provided to move up and down as needed, and the guide tilts in synchronization with the thread catching lever to support a fully wound bobbin detached from the cradle, roll it, and transfer it to a conveyor. A doffing device for an automatic winder is provided, which comprises a plate, a lever that acts on the cradle to release a fully wound bobbin from the cradle in the upward movement position and to support a replaced empty bobbin, and a structure for supplying the empty bobbin to the cradle. 2 inventions.

In the doffing means according to the present invention, the full bobbin rolls backward while unwinding the thread as in the conventional method, and in order to eliminate the problem of cutting the thread after rolling, the doffing means cuts the thread and then rolls the full bobbin backward. This is a device that rolls the winding bobbin backwards, and while the fully wound bobbin is held in a cradle, it is lifted upward from the traverse drum surface to form a gap between the traverse drum and the fully wound bobbin. The thread is cut and the end of the cut thread is gripped by using the thread, so that the thread connected to the fully wound bobbin can be made extremely short.

The present invention will be described with reference to the illustrated embodiments.

In the drawings, 1 is a traversing drum, 2 is a fully wound bobbin, and 3 is a cradle for holding the bobbin, one of which is movably configured to hold and release the fully wound bobbin 2, as is known in the art. Ru. Reference numeral 4 denotes a supporting arm integrally projecting from the cradle 3, 5 a bearing center for holding the bobbin at the tip of the cradle 3, and 6 a thread pulling lever, the base end of which is connected to the shaft 7 with respect to the fixed machine frame (not shown). A projecting piece 8 that is rotatably attached and integrally protrudes laterally from the shaft support is brought into contact with the other end 11 of a lever 10 that is pivotally supported by a shaft 9, and as the lever 10 rotates, the thread shifting lever 6 is rotated counterclockwise from the position shown by the solid line in FIG. 2 to the end position of the fully wound bobbin 2 shown by the chain line. 12
is a thread catching lever that is rotatably supported on a shaft 14, and a cutting blade 15 is provided at its tip 18 so as to be rotatable around a shaft 16, and a stop lever 17 is provided opposite the arm piece 15'. , and a thread catching lever 1
2 has an arm piece 13 projecting upward from its rear shaft attachment part.

Reference numeral 19 denotes a guide plate provided on the lower surface of the fully wound bobbin 2. The rear part is provided so as to be tilted up and down using the aforementioned shaft 14, and a support arm 20 is provided upwardly from the shaft support.
was installed in one piece.

Reference numeral 21 denotes a machine casing of the take-up device, which is provided so as to be movable along rails 24 and 25 provided on a fixed frame by means of rotors 22 and 23 in the direction in which the take-up unit is fixed. The machine casing 21 is provided with an operating lever 26 that abuts against the support arm 4 of the cradle 3 described above. The lever 26 is rotatably attached to a U-shaped arm 28 which rotates about a shaft 27 at its intermediate portion via a shaft 29. Therefore, the lever 26 rotates together with the U-shaped arm 28, and the lever 26 rotates together with the U-shaped arm 28. One end was engaged with a lever 71 with a shaft 72 as a fulcrum via an L-shaped double arm piece 30 supported by a shaft 31.

Therefore, when the lever 71 swings counterclockwise around the shaft 72 (FIG. 1), the arm piece 30 moves to the operating lever 2.
6, and the other end of the operating lever 26 is placed in the cradle 3.
The supporting arm 4 is made to act in the direction of releasing the holding of the fully wound bobbin 2.

The machine casing 21 is provided with a supporting rod 33 projecting from its tip that has a tail thread winding roller 32 that rotates in a timely manner so as to be rotatable about a shaft 34. an actuating arm 35 that abuts against the
and an actuating arm 36 that abuts against the arm piece 13 integrated with the thread catching lever 12 and the support arm 20 integrated with the guide plate 19, each of which is rotatable about a shaft 37,
Furthermore, an empty bobbin supply mechanism 38 is equipped. The supply mechanism 38 is connected to fulcrums 61 and 62 by arms 55 and 57 and a connecting piece 59 with shafts 56 and 58 as fulcrums, respectively.
It is composed of an arm 54 supported by an arm 54, and a pair of gripping pieces 50 which are supported by a shaft 51 at the tip thereof and have a spring 52 acting on them. Move like the arrow. 39 is an empty bobbin for replenishment, 40 is its supporting shelf,
Reference numeral 41 indicates a conveyor for conveying a fully wound bobbin installed behind the winding unit, and reference numeral 42 indicates a supporting guard.

Next, the operation of the present invention will be explained.

While the machine casing 21 of the take-up device is traveling along the rails 24 and 25 in the direction in which the take-up unit is installed, the drum of the take-up unit that has reached full volume automatically stops and a full volume indication signal is sent. emanate. When the machine casing 21 faces the unit that issued the full-volume display signal, it stops at that position, and each operating lever provided in the full-volume unit is actuated by activation of the operating cam mechanism installed inside the machine casing 21. Doffing is performed by operating each lever in sequence according to a preset program.

First, the U-shaped arm 28 rotates counterclockwise around the shaft 27, and the actuating lever 26, which rotates integrally with the U-shaped arm 28, engages the tip of the support arm 4 of the cradle 3, thereby turning it into a clock. The fully wound bobbin is pulled up onto the drum 1 and separated from the drum 1 as shown in FIG. Next, the operating arm 35 rotates clockwise around the shaft 37 to push the lever 10 counterclockwise, and the other end 11 pushes the protrusion 8 integrated with the thread shifting lever 6 to move the thread shifting lever 6. The distance between the drum 1 and the fully wound bobbin 2 is rotated from the position shown by the solid line to the position shown by the chain line shown in FIG. Rock to the end of the bobbin that came off. Next, the actuating arm 36 rotates counterclockwise around the shaft 37 and pushes the arm piece 13 that is integrated with the thread catch lever 12 to rotate the thread catch lever 12 clockwise around the shaft 14. , the tip moves upward and the arm piece 1 of the cutting blade 15
5' (Fig. 5) collides with the stop lever 17, so that the cutting blade 15 follows its upward movement and moves the thread Y, which was previously guided to the bobbin end by the thread guide lever 6, to the thread catching lever 12. At the same time, the thread Y is cut by being inserted between the tip end portion 18 and the cut thread end connected to the supply pipe thread side shown in FIG. 6 is grasped.

Next, the actuating arm 36 further rotates to push the support arm 20 and rotate the guide plate 79 upward around the shaft 14, bringing its tip into contact with the lower surface of the fully wound bobbin 2. Then, the lever 71 swings counterclockwise around the shaft 72, and the push arm piece 30 moves against the lever 2.
6 in the direction of the paper, and the other end of the lever 26 is attached to the shaft 29.
The fully wound bobbin 2 rolls on the guide plate 19 and onto the conveyor 41 in order to open the movable arm 3 outward by swinging with the supporting arm 4 as a fulcrum and release the holding of the bobbin. It will be moved and carried out.

At this time, the yarn catching lever 12 further rotates upward while gripping the yarn Y connected to the supply tube yarn side, and moves upward to a position above the bearing center 5 of the cradle 3, but during this time, the empty bobbin supply structure 38 The gripping piece 50 moves in the direction of the arrow shown in FIG.
Grasp one of the empty bobbins 39 above and
As shown in the figure, the cradle 3 is brought into alignment with the outwardly opened bearing center 5, and then the actuating lever 26 is swung to release the outward push of the support arm 4, and The cradle 3 then moves back in the direction of holding the empty bobbin 39 and holds the empty bobbin 39 with the bearing centers 5 and 5' on both sides. The captured thread Y is clamped.

Next, the thread shifting lever 6 turns clockwise from the position shown in FIG. 4 and returns to the original position shown by the solid line in FIG. The thread Y is wound onto the bobbin 39 by rotating the movable roller 32 in contact with the empty bobbin 39 held in the cradle 3. This tail winding causes the yarn end to separate from the yarn catching lever 12. Next, the U-shaped arm 28 rotates back clockwise to release the support arm 4, and the cradle 3 is moved downward accordingly, and the cradle supports the empty bobbin 39 in contact with the drum 1. The machine descends until the
The support rod 33 for doffing on the first side, the operating arms 35 and 36, the empty bobbin supply mechanism 38, the yarn catching lever 12 and the guide plate 19 on the unit side are respectively restored to the standby position for the next doffing operation, and then the start position (not shown) is set. The yarn winding operation is started by using the handle, and the machine casing 21 of the retrieving device starts cruising.

In this way, according to the present invention, the fully wound bobbin is held in the cradle and is lifted up and isolated from the drum, and the thread shifting lever is rotated between the drum and the fully wound bobbin to remove the yarn connected to the supply tube yarn. After guiding the thread to the end of the bobbin, the thread catching lever is rotated to cut the thread at its tip and also clamp the cut thread end on the side connected to the supply pipe thread, so that the cut thread connected to the fully wound bobbin is It is extremely short, so when the full bobbin is released from the cradle, passes over the guide plate, and rolls onto the conveyor, there is no risk that the thread connected to the full bobbin will wrap around other machine parts and interfere with their operation. This has the effect of making consistent doffing work smoother.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of the device immediately after the start of doffing operation, FIG. 2 is a plan view taken from line A-A in FIG. 1, and FIG.
Figure 3 is a side view of the main part in the doffing state, Figure 4 is a partial plan view, Figure 5 is a side view of the thread cutting and pinching part, Figure 6 is its plan view, and Figure 7 is an empty view. It is a top view of a bobbin grip part. DESCRIPTION OF SYMBOLS 1... Traverse drum, 2... Full bobbin, 3... Cradle, 5... Bearing center, 6... Thread pulling lever, 12... Thread catching lever, 15... Cutting blade, 19...
Guide plate, 21... Lifting machine casing, 26... Operating lever, 32... Rotating roller for tail wrapping, 33... Support rod, 3
5... Operating arm that engages with the cradle, 36... Operating arm for rotating the thread shifting lever, 38... Empty bobbin supply mechanism,
39... Empty bobbin, 41... Unloading conveyor.

Claims (1)

[Scope of Claims] 1. A doffing device that runs over a plurality of fixed winding units, stops at a predetermined position in response to a full wind signal, doffs, and inserts an empty bobbin. During winding, the fully wound bobbin is held in the cradle and lifted against the traversing drum to form a gap between the drum surface and the fully wound bobbin, and the thread guide lever is rotated between the drum surface and the fully wound bobbin. The thread connected to the bobbin is guided to the end of the bobbin, and the thread between the full bobbin held in the cradle and the drive drum is cut by the thread catching lever at a position as close as possible to the full bobbin, and the thread on the supply pipe thread side is cut. A doffing method characterized in that after holding the cut thread end, a guide plate is raised from a standby position to release a fully wound bobbin from a cradle. 2. In a device in which the doffing device runs on a plurality of fixed winding units, stops at a predetermined position in response to a full winding signal, doffs, and inserts an empty bobbin, a cradle 3 for supporting the bobbin is used. rotates upward so as to separate the fully wound bobbin from the traversing drum 2 and form a gap between it and the drum when it is fully wound;
In addition, when a fully wound bobbin is discharged and an empty bobbin is replaced and supported, it is set so that it is returned to the old position, and one end of the bobbin is kept in standby at an outer position, and the other end of the bobbin is moved between the drum and the fully wound bobbin at an appropriate time. A thread shifting lever 6 that moves toward an outward position to move the supplied yarn connected to a fully wound bobbin, and a thread catching lever 1 that is located at the end of the thread shifting lever in the direction of movement and is equipped with a cutting blade 15 at its tip.
2 is provided to move up and down at appropriate times, and furthermore, a guide plate 19 tilts in synchronization with the thread catching lever 12 to support the fully wound bobbin detached from the cradle, and rolls the bobbin to transfer it to the conveyor. , a doffing device for an automatic winder comprising a lever 26 acting on the cradle to release a full bobbin from the cradle in the upward movement position and supporting a replaced empty bobbin, and a structure 38 for supplying the empty bobbin to the cradle.