JPS6149215B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION In the process of winding continuous yarn such as synthetic fiber onto a bobbin, the present invention automatically performs the operation of doffing a fully wound bobbin to a predetermined size and then threading it onto an empty bobbin. The present invention relates to a device for performing

In the past, after doffing a full bobbin and replacing it with an empty bobbin, the work of threading the empty bobbin was done manually, but as winding speeds have increased, these tasks have become easier. A high degree of skill is required, and as the scale of production increases, the number of spindles to be wound and the weight of the windings increase, so mechanization of fully wound bobbin replacement work is required from the viewpoint of productivity improvement and labor safety. Ta.

In recent years, automatic threading devices have been developed to meet these demands and have reached the stage of practical use, but when such devices are used to thread a friction type winding device, The thread often gets stuck on the roller, and the following problems arise in terms of quality control of the wound thread.

That is, in general, in a friction roller type winding machine, the bobbin or package inserted in the bobbin holder is rotated by contact with the friction roller, and therefore the winding yarn is in direct contact with the friction roller. Therefore, winding of the yarn around the friction roller may occur due to factors such as fluctuations in the spinning condition during winding. This thread wrapping does not involve the entire thread being wrapped around the thread, but rather a few single threads, which are a portion of the thread, winding around the friction roller.When such thread wrapping around the friction roller occurs (Even if doffing is automated, periodic patrol inspections are performed, and wound yarn is discovered at this time.) Fully wound bobbins that are wound during this time are not treated as normal products for quality control reasons, and are instead defective. It is discarded as such.

However, when threading the bobbin using an automatic threading device as described above, when threading, the single thread is wound onto the friction roller by operations such as cutting the thread or punching the thread to secure the thread end. Because of this, it is not possible to distinguish the wrapped yarn from the wound yarn generated during winding, and even if it occurs during threading, the fully wound bobbin must be disposed of as defective, and quality control or There were problems with process control.

The present invention has been made in order to solve the problems arising from the adoption of such an automatic threading device, and is a dotting device having an automatic threading means movably disposed along the front surface of a friction type winding device. , an arm is provided that can move back and forth along the friction roller axis of the winding device, and a swing that is rotatably connected to the tip of the arm with a pin and is connected to a fluid pressure cylinder and can be rotated toward the friction roller side. Attach the arm, and arrange a spatula and a brush on the swing arm so that the spatula and brush are sequentially formed from the tip side of the swing arm, and when the spatula is in contact with the friction roller, the tip side of the friction roller of the spatula A dosing device characterized in that the friction roller is inclined in the direction of rotation, and is moved from the rear end of the friction roller to the front end while pressing a spatula and a brush against the friction roller. be.

Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 1 is a side view showing an embodiment of the present invention.

In the figure, reference numeral 1 denotes the stand of the spinning winder, which includes a bobbin holder 2, a friction roller 3, a traverse device 4, a traverse guide 5, and a godet roller 6.
etc. are arranged as a unit. The yarn Y is traversed by a traverse guide 5 from a godet roller 6 via a traversing fulcrum guide 7 and wound onto a bobbin inserted into a bobbin holder 2.

Reference numeral 10 denotes a dotting wheel having an automatic threading means (not shown), which intermittently runs along (parallel to) the machine base 1 on a rail 11 provided in front of the machine base 1.

Reference numeral 12 denotes a wrapped yarn removing device provided on the dotting wheel 10, which includes an arm 13 that moves back and forth in the axial direction along the lower part of the friction roller 3;
Remover 1 rotatably attached to the tip of 3
It starts from 7.

Reference numeral 14 denotes a slider connected to a rodless cylinder (a solenoid or the like can also be used) 15 and guided by a guide rod 16 to move back and forth.The rear end of the arm 13 is connected to this slider 14 so that it can move back and forth.

As shown in FIG. 2, the remover 17 includes a swing arm 18 rotatably connected to the tip of the arm 13 with a pin, a support frame 20 fixed to the tip of the swing arm 18 by a connecting rod 19, and a panel on the support frame 20. The structure includes a spatula 22 and a brush 23 that are attached sequentially from below via 21 and 21', and further, the front end is rotatably connected to the swing arm 18 and the rear end to the arm 13, respectively, so that the swing arm 18 is connected to the swing arm 18. Rotate upwards and arm 1
An air cylinder 24 is provided for moving to a position substantially in line with 3.

Here, as shown in FIG. 3, the position of the spatula 22 when it contacts the friction roller 3 is such that the tip side of the friction roller 3 of the spatula 22 is facing the rotation direction of the friction roller 3 (arrow B in the figure). It is attached to the support frame 20 so that the tilt angle α with respect to the axis is about 60°.

Therefore, the dotting method of the dotting wheel 10 provided with the wound yarn removing device 12 may be any known method. For example, JP-A-51
- As described in JP-A-123339 or JP-A-52-12346, the yarn runs along the front of a fully wound spinning spindle, stops, and when a command to start dotting is received, the yarn is being wound onto a bobbin. After cutting and suctioning the yarn, the full bobbin is received from the bobbin holder 2 of the winding machine, and an empty bobbin is inserted.After waiting for the speed of the bobbin to increase, the suctioned yarn is threaded onto the dotting wheel 10. If the dotting method is to complete a series of doffing operations, the doffing wheel 10 of the present invention performs the following operation subsequent to this automatic threading.

That is, the wrapped yarn removing device 12 is in the first position during traveling.
As shown in the figure, it is housed inside the dotting wheel 10, and when it stops at a predetermined spindle and the dotting action starts as described above, the rodless cylinder 15 operates at an appropriate time and the slider 14 The arm 13 moves forward while being guided by the guide rod 16, moves to a position below the friction roller 3 and parallel to the axial direction of the friction roller 3, and waits there (FIG. 4).

Next, when the threading on the bobbin inserted in the winding machine is completed, a signal is sent to the air cylinder 24 immediately after that, and the swing arm 18 is rotated upward due to its operation and brought into line with the arm 13. Move to
The spatula 22 and brush 23 contact the rear end of the friction roller 3 (FIG. 5). Here, spatula 22
Since the brush 23 is elastically supported via the springs 21 and 21', it presses the friction roller 3 with an appropriate force and comes into close contact with it, even if there is some error.

Next, as the swing arm 18 rotates, it hits a limit switch (not shown) provided near the pin joint, and in response to this signal, the rodless cylinder 15 moves backward and begins to move backward. Therefore, the arm 13 moves backward, and the spatula 22 and brush 23 move in the axial direction from the rear end of the friction roller 3 to the front end position while contacting the friction roller 3. Therefore, during threading, the wound yarn Y' generated on the friction roller 3 is first captured or focused by the brush 23 and removed to the front end of the friction roller 3. The wrapped yarn Y' that is not captured by the brush 23 or that is left behind during the collection by the brush 23 is completely removed by the spatula 22 that moves from behind the brush 23. In this case, if only the spatula 22 is provided, it is possible to remove threads that are wrapped around to a certain extent, but if a single thread is wrapped around it, it is difficult to remove it because it gets over the thread, and it is difficult to remove it with only the brush 23. Single threads can be captured and removed, but it is difficult to remove single threads that have become wrapped around to some extent and have grown in size. However, in the present invention, since the spatula 22 and the brush 23 are combined, the wound yarn Y' can be surely removed. Furthermore, with the configuration of the above embodiment, since the brush 23 is pressed against the friction roller 3 and moved before the spatula 22, the single yarns are bundled by the movement of the brush 23, so that the single yarns are bundled to some extent. Then, even if the thread is not removed by the brush 23, it is removed by the next spatula 22, and the wrapped thread is completely removed in one movement.

Here, the removal of the wrapped yarn Y' does not only mean that it is completely removed from the friction roller 3, but also means that the wrapped yarn is moved outside the range of the packaged yarn layer that is in contact with the friction roller 3. Therefore, if the wound yarn Y' can be moved to a corresponding position outside the yarn layer, the brush 23 and spatula 22 do not necessarily have to pass over the friction roller 3.

Furthermore, the spatula 22 only needs to have the function of reliably moving the wound yarn Y' along the friction roller 3. Therefore, as shown in the embodiment, the spatula 22
It is preferable to use one whose tip is made thin like the edge of a cutter so that it can surely come into contact with the three surfaces of the friction roller. For this purpose, when the friction roller 3 is moved toward the tip end side, that is, in the direction of arrow A, as shown in FIG. It is preferable that the spatula 22 be inclined with respect to the axial direction of the friction roller 3 in order to make it easier for the spatula 22 to be inserted between the wound yarn Y' and the friction roller 3 when the two are brought into contact with each other. In this case, the inclination angle (α in the figure) is preferably 40 to 70°, particularly around 60°.

The spatula 22 and the brush 23 are preferably supported by an elastic body such as a spring in order to prevent vibrations during contact with the friction roller 3 and movement, and to ensure contact pressure stability. In this case, it is preferable that the spatula 22 and the brush 23 be separated and elastically supported so that their contact pressure does not affect each other.

Also, a spatula 22 that comes into contact with the friction roller 3
The material is brass, copper, Bakelite, carbon, nylon, which is softer than Frixion Roller 3 (which is usually coated with hard chrome plating).
Oak, bamboo, etc. can be used, but Bakelite is the most preferable in terms of longevity, dirt, and uniformity of the material.

The brush 23 can be made of pig hair or fibrous material such as nylon, but it is generally preferable to use nylon fiber.

Next, when the rodless cylinder 15 moves backward and returns to its original position, the spatula 22 is positioned outside the package yarn layer as shown in FIG. If you move it, the swing arm will return to its original position,
All operations are completed (Figure 1).

In the embodiment, the spatula 22 and the brush 23 are rotated by the swing arm 18 to contact the friction roller, but the arm 13
It is also possible to directly or indirectly attach a spatula 22 or the like to move the arm 13 laterally toward the friction roller, or to move only the spatula 22 or the like laterally to bring it into contact with the friction roller 3. Further, it is preferable that the spatula or the like be brought into contact with the lower surface of the friction roller 3 from above the space, but the invention is not limited to this.

As detailed above, in the dotting device according to the present invention, the wound yarn is removed by the spatula and brush that come into contact with the rear end of the friction roller and move to at least the front end of the friction roller. The yarn wound around the friction roller is completely removed, and full bobbins of normal products no longer need to be discarded because they are confused with the yarn generated during winding. This eliminates troubles caused by automated threading. The effect is extremely large.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing an embodiment of the present invention, FIG. 2 is an enlarged side view of the wrapping removal device shown in FIG. 1,
FIG. 3 is a diagram for explaining the mounting direction of the spatula, and FIGS. 4 to 6 are diagrams for explaining the operation. 10 is a doffing cart, 12 is a winding yarn removing device, 13 is an arm, 14 is a slider, 17 is a remover, 18 is a swing arm, 21 and 21' are springs, 22 is a spatula, and 23 is a brush.

Claims (1)

[Scope of Claims] 1. A dotting device having an automatic thread hooking means movably disposed along the front surface of a friction type winding machine, which is provided with an arm that can move back and forth along the friction roller of the winding machine. , a swing arm is rotatably connected to the tip of the arm by a pin, coupled to a fluid pressure cylinder, and pivotable to the friction roller side, and a spatula and a brush are attached to the swing arm sequentially from the tip of the swing arm. The spatula and the brush are arranged so that when the spatula is in contact with the friction roller, the tip side of the friction roller of the spatula is inclined toward the rotating direction of the friction roller. A dotting device characterized by moving the friction roller from the rear end to the front end while pressing the friction roller. 2. The dotting device according to claim 1, wherein the spatula and the brush are attached via independently provided springs.