JP2678741B2 - Automatic tow switching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0010]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic tow switching device. More specifically, the present invention relates to an automatic tow switching device that does not require constant monitoring, shortens recovery time when winding tow on a transfer roll, and enables safe operation.

[0011]

2. Description of the Related Art In melt-spinning general-purpose synthetic fibers such as polyester and polypropylene, a polymer is discharged from a large number of spinnerets (1) to form a large number of fiber bundles (tows), which are rotated at a high speed. Rolls (8, 9) are generally transferred into a container such as a can (12). (Fig. 2) Generally, the total fineness of tow is generally as thick as several thousand denier to tens of thousands denier in order to improve productivity. Set the transfer conditions for the transfer rolls (8, 9) by adjusting the nip pressure and the guide roll.
Care is taken in selecting the speed ratio with (5) or the spinning oil. However, due to single yarn breakage, single yarn winding of the tow that is being fed, and the like, yarn winding and tow winding often occur on the transfer roll. (Fig. 2) If winding occurs on the single transfer roll (8, 9), stop the transfer roll (8, 9) and use the toe by hand or in the path of the tow yarn path E with an air soccer ball. After winding on the winding roll (6), the yarn waste on the transfer roll is removed, and the tow yarn path is manually moved to the route F, and then the transfer roll is restarted,
Switching was performed by stopping the take-up roll. (Fig. 2)

[0012]

[Problems to be Solved by the Invention]
When winding around the transfer roll occurs, the transfer roll (8,
9) must be stopped. Further transfer roll (8,
If the stop of 9) is delayed, the tow thrown into the can is also involved, and the entire rotating body is entangled with the guide roll.
All rotating bodies such as (5) and take-up roll (3) must be stopped. For this recovery, it was necessary to remove the wound thread waste and stop the discharge of the thread when the recovery takes a long time. Therefore, it takes a long time to recover and a large amount of waste thread is generated. Further, the winding tow sometimes applied an abnormal load to the transfer roll gear box portion, and the gear was sometimes damaged. There is a problem in that constant monitoring is required in order to minimize the winding of the transfer roll, and the switching work requires a lot of labor and is dangerous. That is, an object of the present invention is to provide a device for promptly switching the tow wound on the transfer roll and promptly transferring the tow,
Further, it is to provide the device with high safety.

[0013]

Means for Solving the Problems The present invention provides a yarn winding sensor, a yarn winding sensor, which is either a combination of an abnormal current detection unit of a transfer roll drive motor or an image analysis unit of an image sensor (16) or a combination thereof. A cutter (7) operated by a signal from the housing (1), one set of transfer rolls (8, 9) and one or more other sets of transfer rolls are arranged in a housing (13), and the housing is mounted and fixed on a turntable; A main feature of the automatic tow switching device is a tow transfer device (10) capable of rotating the turntable and switching the transfer roll when switching the transfer roll.

Next, the present invention will be specifically described with reference to the drawings. The control system of each device is mainly composed of the following control systems. That is, an air cylinder, a hydraulic cylinder, a raising roll, a lowering roll, a traverse roll, a cutter operation, a turntable rotation, a control system for controlling the operation of a sensor, a transfer roll, a winding roll, a guide roll, and the like. It is a speed-related control system for controlling the rotation speed, a positional relationship between individual devices, an operation sequence relationship, and a time-related control system. A part of the control system may be incorporated in a sequence process control or a microcomputer. The thread winding sensor of the present invention is a sensor for detecting thread winding or tow winding, and is a means for detecting an abnormal value of the transfer roll drive motor current, or an image sensor during winding of the transfer roll (16). It is a detecting means from the image information, and both may be arranged.

The cutter (7) of the present invention comprises a transfer roll (8,
The tow wound around 9) is automatically activated by the signal from the thread winding sensor. The cutter may be fixed to the tow yarn path or may be on the back side of the tow yarn path during normal operation and push the cutter to the tow yarn path by the cutter moving device (15). Furthermore, a take-up roll for winding the tow cut with a cutter
(6) may be provided, the winding roll (6) is movably fixed to a panel or the like, or a winding device capable of moving to the tow transfer device (10) side as described later. (11)
It may be arranged in. Further, since it is wound on the winding roll (6), an air ejector (14) for ejecting air flow can be arranged. (FIG. 7) Air can be ejected to the air ejector by a solenoid valve. The cutter may be operated by a solenoid valve. Also tow transfer device (10)
It is possible to arrange the cutters (7) on the side surface of the housing (13) for the number of sets of the transfer rolls, and it is also possible to arrange the cutters (7) independently of the housing (13).

The take-up roll (6) of the present invention is capable of moving the take-up roll vertically and horizontally centering on the tow transfer device (10), and is a device for moving the take-up roll up and down, for laterally traversing. Traverse Device Or Tow Transfer Device (10)
It is arranged in the winding device (11) which can be rotated and moved to the winding roll positions (6A), (6B), (6C) and (6D) around. Taking a device for raising or lowering the winding roll (6) as an example, the winding roll (6) has a collar (19) for preventing the yarn from being wound around the shaft of the motor. Yes, and is also connected to a take-up roll drive motor. The take-up roll drive motor is fixed to the gantry, and the gantry can be raised or lowered by the piston of the air cylinder. The air cylinder is supported and fixed to the support plate of the carriage (17). A guide support plate for preventing the rolling and vibration thereof and a guide engaging with a guide rail described later are fixed to the frame. The carriage (17) is provided with a guide rail support column on which guide rails are arranged, and a traverse motor that is a traverse device of the carriage (17) together with a pinion. Furthermore, the trolley is mounted on the traverse pole where columns and rails are arranged, via wheels. (Figs. 3 and 5)

In the present invention, the winding device (11) includes a device for winding the winding roll (6) in the width direction, which is arranged in front of and behind the width direction. It is also possible to arrange it in the vicinity of the roll. The tow transfer device (10) of the present invention comprises one transfer roll (8, 9) and two or more transfer rolls capable of switching other transfer rolls. The transfer rolls (8, 9) can be switched as long as the transfer roll around which the yarn is wound can be switched to a spare transfer roll, such as a turntable moving method or a rail moving payout method. Is preferably two, but is usually two. A set of transfer rolls (8, 9) may be placed on the front side of the housing (13), and another set of transfer rolls to be switched when thread winding occurs on the back side. it can. (Fig. 4) The transfer roll consists of a metal roll with a flat surface (1st
Fig.), A gear type (Fig. 8A), a cage type having a bar on the mountain portion (Fig. 8B), and the like. The transfer roll (8) is usually wider than the transfer roll (9). (FIG. 1, FIG. 4, FIG. 6).

To further explain the method of moving the turntable, the tow transfer device (10) has a housing (13) mounted and fixed on the turntable, and a turntable driving motor and a gear are provided around the shaft at the bottom of the turntable. The turntable can be rotated via (FIG. 3), and the turntable has two left and right fixing pins for fixing. (4th
Further, two or more sets of transfer rolls and their drive units may be arranged and switched in one housing (13).
(Fig. 4) When the guide bar (18) is placed, the take-up roll (6)
As it descends from 6C to 6D, it prevents the tow from wrapping around the shaft of the transfer roll, the upper side of the wide transfer roll (8),
Conveniently, it is possible to guide to the correct tow yarn path that passes through the front side of the narrow transfer roll (9). (FIG. 6) The position of the guide bar may be fixed to the housing (13) of the tow transfer device (10) or may be the guide bar of the winding roll.

[0019]

Next, the operation of the present invention will be specifically described with reference to an example based on the drawings of the present invention. Tow (4) is 1 to 7
After passing through the individual guide rolls (5) and the take-up roll (6) which rotates at the position of 6A which is the fixed position of the roll, the transfer device (1
It is transferred to the can (12) along the path of the tow yarn path A by the transfer rolls (8, 9) of (0). (Fig. 1) The rotation speed of each rotating roll is the same as the take-up roll (3) or the transfer roll (8, 9)
The take-up roll (6) and the guide roll (5) are set slightly higher in this order. When the tow is wound around the transfer rolls (8, 9), the signal received by the image sensor etc. is processed by the control device, the cutter moving device (15) is activated, the cutter is pushed forward, and the cutter Enter the thread trail. (Fig. 7)
At the same time, the air release solenoid valve of the air ejector opens and air is ejected. Further, the cutter is actuated by the solenoid valve to cut the tow, and at the same time, the tow is wound up on the winding roll (6). After a slight dry time lag, the rotation of the transfer rolls (8, 9) stops and one stage of automatic switching ends.

Next, after the tow cutting, the two left and right fixing pins for fixing the turntable are released. (4th
(Fig.) After that, the turntable is driven by a drive motor built into the turntable moving device, and the turntable is rotated 180 degrees around the turntable shaft centered through the gears.
Rotate by ° and the transfer roll for switching comes to the front side. The fixing pin of the turntable is lowered, the tow transfer device is fixed again, and the yarn waiting state for switching the yarn is waited until the preparation of the winding roll device described later is completed. The take-up roll (6) around which the tow is wound is slowly raised to the position 6B by the operation of the air cylinder. After that, the traverse motor, which is one of the traversing devices, is driven to conduct the rack through the pinion and reach 6C. The tow thread path follows the path C. After that, the take-up roll gently descends due to the operation of the air cylinder, and the take-up roll reaches 6D. The tow is guided by the guide bar (18), above the wide transfer roll (8),
The narrow transfer roll (9) was correctly passed through the front side and was wound up by the winding roll (6) moved to the 6D position, and the tow yarn path was set to D.
Route.

As soon as the take-up roll reaches 6D,
The transfer rolls (8, 9) for switching are rotated by the signal from the control device, the winding roll (6) is stopped at the same time, and the tow follows the route of the tow yarn path A, and the transfer roll (8) and the transfer roll (9 ) And is transferred to the can, and the transfer roll switching process ends. (Fig. 4) After that, the tow between the can and the take-up roll is cut with scissors or cut with an automatic cutter, and the take-up roll is set to 6 when the home position return signal is output during operation of the take-up roll.
After passing through the paths C and 6B, the winding roll is incorporated into the control device so that the winding roll starts to rotate at the point 6B, and the winding roll reaches 6A and returns to the steady position. Further, the waste thread wound around the transfer roll on the back side of the housing is cut and removed by a cutter or an automatic cutter, and the entire work of the transfer transfer of the tow is completed.
Further, in the present invention, it goes without saying that some or all of operations such as raising, lowering, rotation start of the winding roll, traverse of the carriage, and various operations of the tow transfer device can be manually operated.

Further, in the present invention, when the winding roll (6) to be wound is fixed, the tow transfer device (1) is in a standby state for transferring the tow from the winding roll with an air sucker or the like.
The tow switching work is completed by moving it to the 0) side, hanging it on the transfer roll (8), and then cutting and removing the waste thread wound around the winding roll by the cutter and activating the transfer roll (8, 9). Further, in the present invention, the winding roll (6) may be omitted. When there is no take-up roll (6), the guide roll (5) on the toe transfer device side or the take-up roll (3) can be used as a substitute.

[0023]

The first effect of the present invention is that the recovery when the tow is wound around the transfer roll is automatically switched to the take-up roll, so that the constant monitoring work is unnecessary. The second effect of the present invention is that the return process when the tow is wound around the transfer roll is automatically switched, so the work of removing waste yarn is reduced. Further, according to the conventional device, winding on the transfer roll (8, 9), winding on all the rotating bodies, further complete stop of yarn discharge,
It took about 15 to 25 minutes or more to remove these waste threads, but with the apparatus of the present invention, it took about 50 seconds to 2 minutes, and the production efficiency was further increased.

A third effect of the present invention is to automatically switch and do not wind up and wind the tow that has been shaken in the can, so that the load does not exceed the gearbox limit of the transfer roll and the drive system is damaged. There is no. The fourth effect of the present invention is that since the switching operation is automatically performed and rapid work is unnecessary, safe operation is possible. A fifth effect of the present invention is that not only synthetic fibers in melt spinning to be switched but also crimped tows having a large fineness of several thousand to several hundred thousand denier, multifilaments, spun yarn, tape yarns and fibers. It is applicable to a wide range of rods.

[Brief description of the drawings]

FIG. 1 is an overall schematic perspective view of an apparatus to which an embodiment of the present invention is applied,

FIG. 2 is a schematic front view for explaining a conventional device.

FIG. 3 is an overall schematic front view of an apparatus to which an embodiment of the present invention is applied,

FIG. 4 is an overall schematic plan view of an apparatus to which an embodiment of the present invention is applied,

FIG. 5 is a schematic side view of a winding device that is an embodiment of the present invention,

FIG. 6 is a schematic side view for explaining the positional relationship between the transfer roll and the guide bar.

FIG. 7 is a schematic diagram for explaining a positional relationship between a cutter and an air ejector,

FIG. 8 is a schematic perspective view of a transfer roll (8-A: gear type).
(8-B: basket type)

[Explanation of symbols]

 (1) ... Spindle, (2) ... Fiber, (6) ... Winding roll, (7) ... Cutter, (8) ... Transfer roll, (9) ... Transfer roll, (10) ... Toe transfer device, (11 ) ... Winding device

Claims (3)

(57) [Claims] 1. A yarn winding sensor, which is either a combination of an abnormal current detecting means of a transfer roll driving motor or an image analyzing means by an image sensor (16), or a cutter which operates by a signal from the yarn winding sensor ( 7) One set of transfer rolls (8, 9) and another set of one or more transfer rolls are arranged in the housing (13), and the housing is mounted and fixed on the turntable. An automatic tow switching device comprising: a tow transfer device (10) that can rotate and switch the transfer roll. 2. The automatic tow switching device according to claim 1, further comprising a winding roll (6) around which the tow cut by the cutter (7) is wound. 3. The winding roll (6) is a tow transfer device (1).
The winding device (11) that moves vertically and horizontally or rotationally around 0) is arranged.
Automatic tow switching device.