JPH03130407A - Apparatus for automatic changeover of tow - Google Patents

Abstract

PURPOSE:To provide the subject safe apparatus composed of a yarn-winding sensor, a cutter working by the signal of the sensor, a winding roll and a winding apparatus to transfer the winding roll in vertical and lateral directions, dispensing with continuous watch and enabling the quick recovery of a traversing roll. CONSTITUTION:The objective apparatus for automatic changeover of tow is composed of a yarn-winding sensor 16, a cutter 7 working by the signal of the sensor, a winding roll 6 and a winding apparatus 11 to transfer the winding roll in vertical and lateral directions. At the moment the two 4 is wound around traversing rolls 8, 9, the winding is detected by the yarn winding sensor 16, the tow 4 is cut with the cutter 7 and wound around the winding roll 6, the traversing roll wound with the tow is changed to the other set of traversing roll by a tow-traversing apparatus 10 and the two wound around the winding roll is automatically transferred to the traversing roll to enable the recovery without necessitating continuous watch of the operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic tow switching device. More specifically, the present invention relates to an automatic tow switching device that eliminates the need for constant monitoring, shortens the recovery time when wrapping tow around a transfer roll, and allows safe operation.

[Conventional technology]

In the melt spinning of general-purpose synthetic fibers such as polyester and polypropylene, polymers are discharged from a number of spinnerets (1) to form a number of fiber bundles (tows) using transfer rolls (8, 9) that rotate at high speed. ) and is generally transferred to a storage container such as a can (12).

(Figure 2) Normally, the total fineness of the tow is generally thick, ranging from several thousand deniers to several thousand deniers, in order to increase productivity. The transfer conditions of the transfer rolls (8, 9) are carefully set by selecting their nip pressure, speed ratio with the guide roll (5), spinning oil, etc.

However, due to single yarn breakage or single yarn wrapping of the tow being transferred, yarn wrapping and tow wrapping often occur on the transfer roll. (Fig. 2) - If the transfer rolls (8, 9) are wrapped, stop the transfer rolls (8, 9) and remove the tow by hand or with an air sucker along the tow path E. Winding roll (6)
After winding the tow, the thread waste was removed from the transfer roll, the tow thread path was manually moved to path F, and then the transfer roll was restarted and the take-up roll was stopped. . (FIG. 2) [Problems to be Solved by the Invention] In the conventional device, when winding occurs on the transfer roll, the transfer rolls (8, 9) must be stopped.

Furthermore, if the transfer rolls (8, 9") are delayed in stopping, the tow transferred to the can will also become entangled, and the entire rotating body will be wrapped around, causing the entire rotating body of the guide roll (5) and take-up roll (3) to stop. For this return, it was necessary to remove the entangled thread waste, and to stop discharging the thread if it took a long time to return.Therefore, it took a long time to return and a large amount of thread waste was required. Scrap yarn was being generated.Furthermore, the winding tow placed an abnormal load on the transfer roll gearbox, sometimes damaging the gear.Constant monitoring was required to minimize the winding of the transfer roll. There were problems in that the switching work required a lot of labor and was dangerous.

That is, an object of the present invention is to provide a device that can quickly switch and transfer the tow wound around a transfer roll, and furthermore, to provide a highly safe device.

[Means for solving problems]

The present invention provides a winding device (a thread winding sensor) that moves a cutter (7), a winding roll (6), and a chain winding roll vertically and horizontally, which are operated by signals from the thread winding sensor.
This is an automatic tow switching device characterized by consisting of a thread.The moment the tow (4) is wrapped around the transfer rolls (8, 9), the thread winding sensor detects the winding, and the tow (0)
This is an automatic switching device that cuts the material with a cutter (7) and winds it onto a take-up roll (6). Further, the present invention provides a tow transfer device fi (1
The main feature of the tow automatic switching transfer device is that by arranging the transfer roll (81, 9), the tow wound on the take-up roll is automatically applied to the transfer roll (81, 9).

Next, the present invention will be specifically explained based on the drawings.

The control system of each device mainly consists of the following control system. In other words, air cylinder, hydraulic cylinder, operation-related control system that controls the raising, lowering, and traversing of the take-up roll, cutter operation, turntable rotation, sensors, etc., and the rotational speed of the transfer roll, take-up roll, guide roll, etc. These are speed-related control systems, positional relationships of individual devices, operation order relationships, and time-related control systems. A part of the control system may be incorporated into 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 sensor for detecting an abnormal value of transfer roll drive motor current, or an image sensor (16) when winding the transfer roll. The detection means may be a means for detecting image information based on the image information, or both may be arranged.

The cutter (7) of the present invention automatically operates the tow wound around the transfer rolls (8, 9) in response to a signal from a thread winding sensor. The cutter may be fixed to the tow thread path, or may be one that stands by behind the tow thread path during steady operation and is pushed onto the tow thread path by a cutter moving device (15). Further, in order to wind the tow cut by the cuffer around the take-up roll (6), an air blower (14) for blowing air can be provided. (Fig. 7) Air can be ejected from the air ejector using a solenoid valve. The cutter may be operated by a solenoid valve. In addition, cutters (7) for the number of sets of transfer rolls can be arranged on the side of the housing (13) of the tow transfer device (10), and the cutters (7) can be installed independently of the tow transfer device (10). It is also possible to arrange.

The winding device (11) of the present invention is a device that can move the winding roll vertically and horizontally around the winding roll (6) and transfer rolls (8, 9), and for moving the winding roll up and down; It is a traversing device for horizontally traversing, or a device that can rotate around the transfer rolls (8, 9) to take-up roll positions (6 people) (EiB) (6G) (EiD).

To explain in more detail using an example of a device for raising or lowering the winding roll (6), the winding roll (6) is
A collar (1) to prevent the thread from wrapping around the motor shaft.
9), which is further connected to the take-up roll drive motor. The take-up roll drive motor is fixed to a cradle, which can be raised or lowered by a piston of an air cylinder.

Further, the air cylinder is supported and fixed to the support plate of the truck (17). A guide support plate for preventing logging and vibration, and a guide that engages with a guide rail described later are fixed to the mount. The bogie (I7) has a guide rail support column with a guide rail arranged thereon, and the bogie (17)
A traversing motor, which is a traversing device, is arranged together with a pinion. Furthermore, the trolley is mounted via wheels on a traversing platform with pillars and rails. (Figure 3, Figure 5)
In the present invention, the winding device (11) includes a device that moves back and forth in the width direction of the winding roll (6) and in the vicinity of the winding roll in order to wind the winding roll (6) uniformly in the width direction. It is also possible to arrange.

The tow transfer device (10) of the present invention includes one set of transfer rolls (8, 9) and two or more sets of transfer rolls that can be switched between the other transfer rolls. Transfer roll (8,9)
The switching method may be any method that can be switched, such as a turntable movement method or a feeding method by rail movement, and the number of transfer rolls in one set is preferably two, although it is preferable to have a large number.

A set of transfer rolls (8,
9), and another set of transfer rolls to be switched when thread winding occurs can also be arranged on the back side. (Fig. 4) Transfer rolls are made of metal rolls with flat surfaces (Fig. 1), gear-shaped (Fig. 8A), and basket-shaped with bars on the peaks (Fig. 8B). ) etc. can be exemplified. The transfer roll (8) is usually wider than the transfer roll (9). (Figure 1, Figure 4,
Figure 6).

To further explain the turntable moving method, the tow transfer device (10) has a housing (13) attached to the turntable.
The turntable is placed and fixed, and the turntable can rotate around the shaft via the turntable drive motor gear at the bottom of the turntable. (Figure 3) There are two fixing pins on the left and right for fixing the turntable. There is. (Figure 4)
Furthermore, two or more sets of transfer rolls and their driving devices may be arranged and switched in one housing (13).
(Fig. 4), when the idle bar (18) is arranged, when the take-up roll (6) descends from 60 to 6D, it prevents the tow from being wrapped around the shaft of the transfer roll, and prevents the tow from being wrapped around the shaft of the transfer roll. It is convenient because the tow thread can be guided to the correct path passing above (8) and in front of the narrow transfer roll (9). (
FIG. 6) The position of the guide bar may be fixed to the housing (I3) of the tow transfer device (10), or may be the guide bar of the take-up roll.

[Effect]

Next, the operation of the present invention will be specifically explained according to an example based on the drawings of the present invention.

The tow (4) passes through 1 to 7 guide rolls (5) and then passes through a take-up roll (6) rotating at the roll fixed position 6A.
) to the transfer rolls (8, 9) of the transfer device (10).
It is transferred to the can (12) along the tow path A. (Fig. 1) The rotational speed of each rotating roll is set to be the same as that of the take-up roll (3) or slightly higher in the order of transfer rolls (8, 8), take-up roll (6), and guide roll (5). There is.

When the tow is wrapped around the transfer rolls (8, 9), the control device processes the signal received by the image sensor, etc., the cutter moving device (15) is activated, the cutter is pushed forward, and the cutter moves toward the tow. Enter the thread path. (Figure 7) At the same time, the air release solenoid valve of the air blower opens and air blows out. Furthermore, a cutter is actuated by a solenoid valve to cut the tow, and at the same time, the tow is wound onto a take-up roll (6).

After a time lag of a few seconds, the transfer rolls (8, 9) stop rotating, and the first stage of automatic switching ends.

Next, after cutting the tow, the two left and right fixing pins for fixing the turntable are released. (Fig. 4) After that, the turntable is driven by a drive motor built into the turntable moving device, and rotates gently 180 degrees along with its wheels around the turntable axis via gears, and switches to the front side. A transfer roll will arrive. The fixing pin of the turntable is lowered, the tow transfer device is fixed again, and the tow transfer device is in a standby state for yarn switching until the preparation of the winding roll device, which will be described later, is completed.

The take-up reroll (6) with the tow wound thereon is gently raised to position 6B by the operation of the air cylinder. Thereafter, the traversing motor, which is a device of the traversing device, is driven to conduct the rack through the pinion and reach 6C. The tow thread path takes route C. After that, the take-up roll is slowly lowered by the operation of the air cylinder, and the take-up roll reaches 6
Reach D.

The tow is guided by the guide bar (18), passes correctly above the wide transfer roll (8) and in front of the narrow transfer roll (9), and moves to the take-up roll (6) at position 6D.
The tow thread path becomes the path D.

At the same time as the take-up roll reaches 6D, the transfer rolls (8, 9) for switching are rotated by a signal from the control device, the take-up roll (6) is stopped at the same time, and the tow is transferred to the tow path A.
According to the route, the money is transferred to a can that passes between the transfer roll (8) and the transfer roll (9), and the transfer roll switching process is completed. (Figure 4) After that, the tow between the can and the take-up roll is cut with scissors or an automatic cutter, and the take-up roll is moved to 6C by issuing a signal to return to the normal position during operation of the take-up roll.
, 8B, the take-up roll is incorporated into the control device so as to start rotating at a point 6B, and the take-up roll reaches 6A and returns to its normal position. Further, the waste yarn wrapped 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 tow switching transfer operation is completed.

Furthermore, in the present invention, it goes without saying that some or all of the operations such as raising, lowering, starting rotation of the take-up roll, traversing the cart, and various operations of the tow transfer device can be performed manually.

〔Effect of the invention〕

The effect of the IL of the present invention is that when the tow is wound around the transfer roll, the return is automatically switched to the take-up roll, so that constant monitoring work is not required.

The second effect of the present invention is that the return process when the transfer roll is wound up is automatically switched, so that the waste thread removal work is reduced. Furthermore, according to the conventional device, it takes about 15 to 25 minutes or more to wrap the yarn around the transfer rolls (8, 9), wrap it around the entire rotating body, completely stop discharging the yarn, and remove these waste yarns. However, according to the device of the present invention, it takes about 50 seconds to
It only took 2 minutes, further increasing production efficiency.

The third effect of the present invention is that the tow transferred to the carrying can is automatically switched and is not rolled up, so there is no load exceeding the gear box limit of the transfer roll and no damage to the drive system.

The fourth effect of the present invention is that the switching operation is automatically performed and rapid work is not required, so that safe operation is possible.

The fifth effect of the present invention is that the objects to be switched are not only synthetic fibers in melt spinning, but also crimped tows with a large fineness of several thousand to hundreds of thousands of deniers, multifilaments, spun yarns,
The advantage is that it can be widely applied to tape lines, fiber rods, etc.

[Brief explanation of the drawing]

FIG. 1: An overall schematic perspective view of a device to which an embodiment of the present invention is applied. FIG. 2: A schematic front view for explaining a conventional device. Fig. 3: An overall schematic front view of an apparatus to which an embodiment of the present invention is applied, Fig. 4: An overall schematic plan view of an apparatus to which an embodiment of the invention is applied, Fig. 5: An embodiment of the invention A schematic side view of the winding device, FIG. 6: A schematic side view for explaining the arrangement of the transfer roll and the guide bar, FIG. 7: A schematic side view for explaining the arrangement of the cutter and the air blower. Figure, 8th cause A: Schematic perspective view of gear type transfer roll, Figure 8B
: Schematic perspective view of a basket-shaped transfer roll (1)...cap,
(2)... Fiber, (6)... Winding roll, (7)
... cutter (8) ... transfer roll, (9) ...
・Transfer roll, (10)... Tow transfer device, (I+)
・・・More than winding device

Claims (1)

[Claims] 1. A thread winding sensor, a cutter (7) that operates according to a signal from the thread winding sensor, a winding roll (6), and a winding device (11) that moves the winding roll vertically and horizontally. )
An automatic tow switching device comprising: 2. The tow transfer device (10) according to claim 1, wherein two or more sets of transfer rolls (8, 9) are arranged and the tow transfer device (10) is capable of switching between one set of transfer rolls and the other transfer rolls. Automatic switching device. 3. The thread winding sensor according to claim 1 is either an abnormal current detection means of a transfer roll drive motor or an image analysis means using an image sensor (16), or a combination thereof, and the cutter according to patent claim 1 (7) is operated by the signal from the thread winding sensor and is fixed on the tow thread path.
Alternatively, the cutter is fixed to the housing (13) via a cutter moving device (15) for pushing out the tow thread path, and the tow cut by the cutter is further wound around the winding roll (6) by a jet of air. The winding device (11) according to claim 1 is configured to move the winding roll around the winding roll (6) and transfer rolls (8, 9). The winding roll position (6A) (6B) (6C) (6D) is centered around the device for moving up and down, the traverse device for moving left and right, or the transfer rolls (8, 9).
The tow transfer device (10) according to claim 2 is a rotary moving device, wherein one set of transfer rolls (8, 9) and one or more other sets of transfer rolls are arranged in a housing (13), An automatic tow switching device characterized in that a housing is placed and fixed on a turntable, and when switching transfer rolls, the turntable rotates and the transfer roll can be switched together with the housing.