JPS61124629A - Apparatus for introducing pick yarn of pirn yarn - Google Patents

Abstract

PURPOSE:To prevent the excessive drafting of the pick yarn and the breakage or elimination of the pick yarn and to introduce the pick yarn by a simple means without necessitating a particular suction stream shutting device, by carrying out the shutting of the suction stream quickly simultaneous with the start of the transfer of the tray. CONSTITUTION:A suction port 15 corresponding to the bottom hollow part 2e of the tray 2 held at the pirn yarn insertion position on the tray sliding face 12a is formed in the suction cylinder 16, and is connected to the suction hose 16a. The suction port 15 is a long slit extended along the circumference of the hollow part 2e of the tray and bored at the side opposite to the moving direction of the tray. The suction port 15 is closed quickly and simultaneously by the ring-shaped bottom face 2f of the tray in the transfer of the tray.

Description

[Detailed Description of the Invention] [Industrial Application Field] When the spinning machine hoisted pipe yarn in the spinning process is fed to an automatic rewinding machine, etc., the drawn end of the pipe yarn is In order to easily pull out the bobbin yarn, this device introduces this Japanese type in advance into the bobbin top hole of the bobbin yarn and holds it there.In particular, when feeding the bobbin yarn, a moving tray is used to insert the bobbin yarn, and the bobbin yarn is placed on this tray. When inserting the thread, the thread is rationally introduced into the top hole.

[Conventional technology]

It is well known that before feeding the yarn from a spinning machine to an automatic rewinding machine, the yarn is introduced into the top hole of the yarn bobbin and held there (for example, in Japanese Patent Publication No. 40-2
Publication No. 1490). It is also known to use a tray into which individual yarns are inserted when feeding the yarn to an automatic rewinding machine, and to apply the top hole introduction of the yarn to the yarn inserted into the tray as described above. It is being (For example, JP-A No. 5
8-59167). When introducing the thread, the thread bobbin generally has a hollow hole, so an air flow is formed in this bobbin hole, and the thread is introduced while riding on this air flow. The mouthpiece is introduced by creating a suction airflow in the top hole.

Further, for the pipe thread inserted into the tray, a suction airflow passage communicating with the tray and the pipe thread insertion pin is provided to introduce the thread. The present inventor has also developed and proposed a means for rationally introducing the thread when inserting the pipe thread into the tray.

[Problem that the invention seeks to solve]

By the way, in order to introduce the thread into the top hole of the bobbin, as described above, apply suction airflow to the root side of the hollow hole of the bobbin to form a suction airflow in the top hole, cut the thread pulled out in advance, and then insert the thread. It is introduced along with the suction airflow. However, in the top hole, a suction airflow is formed in the expanding direction, but inside the bobbin hollow hole, this suction airflow swirls, and the tip of the introduced thread is free, so The fibers are shaken and rotated by the vortex, or the fibers are untwisted and cut due to ruttering, or the fibers are sometimes separated and scattered, and the fibers are introduced at great length. The force may be shortened or eliminated by the suction airflow. In addition, this suction airflow continuously pulls out the thread together with the opening thread, increasing the amount of waste thread and dragging the tail end of the thread during the next conveyance process, causing various troubles. In order to prevent these, it is necessary to quickly cut off the suction airflow to the lancet and its introduction at the end of the latch introduction. Therefore, conventionally, a special suction airflow opening/closing valve device has been installed to perform the opening/closing operation, but these devices require means for detecting and operating means for the completion of thread insertion and thread introduction, and require large-scale equipment. In addition to this, maintenance and management is also time-consuming. Furthermore, a special thread pull-out prevention device is also required. Further, in the case of means using a tray, it is possible to open and close the suction airflow by moving the tray, but special consideration is required to quickly shut off the suction airflow immediately after the tray starts moving. That is, FIG. 7 (schematic drawing) shows the pipe yarn formed according to the present invention, in which the opening thread 1a of the pipe thread 1 is introduced into the top hole 1b of the bobbin, and the means for doing so is shown in FIG. As shown in the explanatory diagram, a suction airflow is applied to the base side of the bobbin as shown by the two-dot chain line A, and the thread 1a pulled out by the suction airflow formed in the top hole 1b is inserted into the hole of the bobbin for a certain length. It is cut to a length (K) that stays at the same length and introduced along with this suction/suction air flow A'.

On the other hand, the tray shown in FIG. 9 (partially cutaway diagram) is used. That is, the tray 2 forms a base portion 2a having a diameter larger than the outer diameter of the inserted tube yarn, and the bobbin receiver forms a stepped portion 2b on the upper central surface of the base portion 2a, and a tube yarn insertion bin 2c is planted in the center of the base portion 2a. In order to pass the suction air flow, a single (as shown) or a plurality of rows of ventilation grooves 2d are formed on the circumferential surface of the pin 2c, and the ventilation grooves 2d are opened at the bottom side of the base portion 2a.

Further, a recess 2e is formed in the center of the bottom surface of the base portion 2a to reduce movement friction.

[Means for solving problems]

Therefore, the present invention utilizes the above-mentioned tray to insert and transfer the pipe thread, and when introducing the thread at the time of insertion, the suction airflow is quickly cut off at the same time as the tray starts moving, and without using any special front opening/closing means. It is configured to do so. That is, an air intake port is provided corresponding to the recess of the tray waiting at the tube insertion position on the sliding surface of the tray, and the air intake port is formed into a long groove hole along the inner periphery of the recess on the side opposite to the tray movement direction. When the tray is moved, the long slots are quickly closed at the bottom of the base.

[Function and Examples]

The present invention will be explained in detail below based on FIGS. 1 to 6. However, the figures show one example of a specific implementation of the present invention, and the present invention is not limited to the illustrated example, but the gist of the above and below will be understood. The same implementation is possible even if a part of the configuration or a part of the design is changed in accordance with the above. FIG. 1 (partially sectional side view) shows a yarn introduction device 3 using the present invention, which is equipped with a yarn hopper 4 in the upper part of the frame, and a yarn hopper 4 provided in the lower part thereof. It is configured to supply individual pipe threads to the pipe thread holding and rotation device 5. The threads held by the thread holding and rotating device are individually rotated, and the threads are pulled out and held by suction by the thread pulling nozzle device 6 disposed opposite to a part of the periphery thereof. The thread from which the thread has been pulled out is released from the holding/rotating device 5, falls through the chute 7 under its own weight, is guided through the guide 7a to the guide tube 10 which can be opened and closed, and waits at the lower center of the guide tube 10. Insert into tray 2.

Reference numeral 9 denotes a feeler plate which is arranged so as to be in contact with the inserted pipe thread and which detects the presence of the pipe thread and prevents the thread from being suctioned and unwound. Further, since the end of the inserted and fallen pipe thread is held at the tip side by the nozzle device, it is rewound by the falling insertion of the pipe thread and is introduced into the cutter 8 provided in its movement locus.

On the other hand, the tray transfer path 11 connected to the pipe thread insertion device 3 is of a circulation type, as shown in FIG. 2 (a cross-sectional view taken along the cutting line ff-ff in FIG. Now upper side 11
The figure shows that a is the empty tray transfer side and the lower side 11b is the tube loading tray transfer side. The tray 2 is supported by the belt 11c and transported. This transfer path 1 is connected to the bypass path 1 in the tube thread insertion device 3.
2 is connected to the bypass passage 12, and the tray 2 is moved in the bypass passage by a tray feeder that operates in conjunction with the operation means of the yarn insertion, stub cutter 8, and guide tube 10. The empty trays moored to the empty tray transfer side are sent one by one to the lower center of the guide tube 10, which is the tube insertion position. The tube loading transfer path 11b is equipped with an appropriate tube take-out device (not shown) stationary or movable to take out the tube from the tray and supply it, or to transfer it to another conveyance device. It looks like it will be replaced.

The main part of the present invention is utilized in the tube insertion section of the tube insertion device configured as described above. That is, as shown in FIG. 3 (partially enlarged view of FIG. 2), the bypass passage 12 has a tray sliding surface formed entirely on the bottom side).
3 shows a state in which the tray 2 is moved to the tube insertion position by movement of the arrow B in FIG. Note that the tray 2 shown in FIG. 3 has a suction air circulation groove formed in the central axis of the bottle, and an opening provided on the inclined surface at the tip of the bottle.
It can be used in the same way as the tray 2 provided on the outer periphery of the bottle, and a structure in which a plurality of these openings are opened on an inclined surface can also be used in the same manner. In addition, in order to reliably hold and hold the tray sent to the tube insertion position, it is recommended to form and arrange a leaf spring 14 as shown in the figure. When the tray is fed in, it is pushed against the holding biasing force of the leaf spring 14 and sent toward the loading tray transfer path 11b. On the other hand, tray sliding surface 1
2a is formed with an inlet port corresponding to the bottom recess 2c of the tray 2 moored at the tube insertion position, and the inlet port 15 is connected to the fourth inlet port 2a.
Figure (cross-sectional view in the direction of the arrow along cutting line ff -■ in Figure 3)
As shown in FIG. 5 (a sectional view along the cutting line Marma in FIG. 4 in the direction of the arrow) and FIG. 6 (explanatory view of the main part configuration) Make it a hole.

The long groove intake port 15 is provided in an intake cylinder 16 provided on the lower surface of the sliding surface 12a, and a suction hose 16 is connected to the intake cylinder 16.
g is connected. The suction airflow of the long groove suction port 15 is formed upward through the recess 2e of the tray 2 and the ventilation groove 2d formed in the bin 2cK, thereby making it possible to effectively insert the tube yarn and at the top of the inserted tube yarn bobbin. A suction air current is formed in the hole, which is introduced into the top hole by cutting the held filigree, and simultaneously with or slightly delayed from the operation of the cutter 8, the arm 3 is activated to replace the tray metal.

However, in the present invention, as shown in FIGS. 5 and 6, this intake port 15 is formed as a long groove hole along the periphery of the tray recess 2e in the direction opposite to the direction of movement.
5 can be closed all at once and quickly by the outer circumferential annular bottom surface 2f of the tray bottom surface, and the suction airflow for a long time is not applied to the pipe thread at the pipe insertion position and into which the stub is introduced.

〔Effect of the invention〕

Therefore, the above-mentioned disadvantages such as wasteful pulling out of the closure, cutting of the closure, and disappearance of the closure can be avoided, and the closure can be reliably introduced by an extremely simple means without the need for a special suction airflow opening/closing device. Now I can do it.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view of a latch introduction tube thread insertion device to which the present invention is applied, Fig. 2 is a cross-sectional view in the direction of the arrow along the cutting line FIG. 4 is a partially enlarged view of the figure; FIG.
The figure is a sectional view in the direction of the arrow along the cutting line Marma in Figure 4,
The drawings are a partially cut-away sketch for explaining the structure of the main parts, FIG. 7 is a sketch for explaining the tube thread, FIG. 8 is a diagram for explaining the introduction of the opening thread, and FIG. 9 is a partially cut-away sketch for explaining the structure of the main parts. 1... Tube yarn 2... Tray 3... Yarn insertion tube insertion device 4... Hopper 5... Tube yarn holding rotation device 6
... Loosen pull-out nozzle device 7 ... Chute 8 ... Cutting device 9 ... Feeler plate 10 ... Guide cylinder 11 ... Tray transfer path 12 ... Bypass path 13 ... Tray feed G-arm 14...Tray holding leaf spring

Claims (1)

[Claims] Using a tube and yarn transfer tray that has a base with a recess formed in the center of the bottom and a ventilation path extending from the recess to the tube and yarn insertion pin provided in the center of the base, A tray that waits at the pipe insertion position on the sliding surface of the tray, which is a device that sucks and introduces the thread, which has been pulled out and held in advance from the pipe thread, into the top hole of the pipe bobbin when inserting the pipe thread. An intake port is opened corresponding to the recess, and the intake port is formed into a long slot along the inner peripheral edge of the recess opposite to the direction of tray movement, so that it can be quickly closed by movement of the tray. A pipe thread introduction device characterized by the following.