JPH01167187A - Thread guard method for winder - Google Patents

Abstract

PURPOSE:To perform thread guard work safely, reliably and smoothly by stopping rotation of a bobbin holder and hooking a thread to a thread guard means then increasing the rotation to a predetermined level. CONSTITUTION:A bobbin holder 13 is pressure contacted with a contact roller 6 then rotation of a turret 12 is stopped. Then a rotary actuator 42 is operated and a thread guard arm 41 is rotated. Furthermore, a rolling cylinder 10 arranged above a traverse box 5 is operated to roll a thread take-up guide 9 to the side of the contact roller 6. Under this condition, thread is passed through a yarn racking guide 48 arranged above the traverse box 5 with the thread Y being sucked by means of a suction gun 45. Furthermore, the thread Y is passed between the contact roller 6 and the thread take-up guide 9 then passed through a thread guard guide 44 provided to a thread guard bar 43 at the tip of the thread guard arm 41. Thereafter, the bobbin holder 13 is started by means of a spindle drive motor 36.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a yarn winding device comprising a bobbin holder that is rotatably supported and equipped with a yarn winding bobbin, and a contact roller that contacts the bobbin. Concerning how to thread the machine.

[Conventional technology]

Conventionally, when threading a yarn on a winding machine that operates at a high speed of 5,500 m/min or more, an operator would increase the speed of the bobbin holder and contact roller to a predetermined winding speed while drawing the yarn into a suction means. Afterwards, the threader sometimes places the thread on a means for positioning the thread at a predetermined position, and the threader operates the means to thread the thread onto the rotating bobbin. (For example, JP-A-60-183472
(See Publication No.) [Object of the Invention] The present invention solves the problems associated with the above-mentioned prior art, and
Even in a high-speed winding machine with a winding speed of 5500 m/Win or more, the purpose of thread hooking is to provide a method that allows the work to be carried out safely, reliably, and smoothly.

[Means for solving problems]

In the present invention, the thread hooking means is provided for positioning the thread at a predetermined position and hanging the thread on the bobbin, and a winding means is provided for winding the thread by bringing the contact roller into pressure contact with the bobbin holder on which the bobbin is attached. In the take-up machine, when threading, the rotation of the bobbin holder is stopped and the yarn is hung on the threading means, and then, after increasing the speed of the bobbin holder to a predetermined rotational speed, the threading is carried out by the threading means. Threading is a method used in winding machines to thread the thread onto the bobbin on the bobbin holder.

To achieve the above objectives.

[For production]

According to the present invention, the operator sometimes places the thread on the thread guide when both the contact roller and the bobbin holder are not rotating, and then speeds up the contact roller and the bobbin holder. In other words, the contact roller is not pressed against the bobbin until the yarn hook is hooked onto the guide.

Therefore, the time required to press and rotate the bobbin attached to the bobbin holder and the contact roller is shortened, and therefore, the risk of the bobbin bursting is greatly reduced.

Furthermore, even if the bobbin ruptures, according to the method of the present invention, the inventor does not have to approach the rotating body,
Therefore, there is no chance of injury from the ruptured bobbin fragments, making it safe.

Furthermore, even if the yarn comes into contact with the contact roller, the contact roller is not yet rotating at this point, so the yarn gets wrapped around the contact roller. This will improve the quality of threading.

Therefore, according to the present invention, the winding speed is 5500 m/mi.
It is possible to safely, reliably and smoothly thread thread onto a high speed winding machine exceeding n.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings, which illustrate embodiments of the invention.

1 and 2 show front views of a spindle-driven tandem type revolving automatic winder implementing the method of the invention.

In FIGS. 1 and 2, two slide shafts 2 extending vertically are fixed to a machine frame 1.

Slide block 3 by slide bearing (not shown)
moves up and down along the slide shaft 2. A traverse box 5 is protruded from the slide block 3 and has a contact roller 6 and a large number (four in the embodiment) of traverse guides 4 for traversing the yarn using traverse guides.

The contact roller 6 is mounted on a bearing 7a (
(Fig. 4). The contact row 56 rotates in contact with the winding bobbin B. In a peripheral speed control type spindle winding machine, for example, as shown in FIG. 4, a gear 64 is attached to the base of the contact roller 6, and The teeth of the gear 64 are detected by a pickup 65, and the winding speed is controlled in accordance with the detection signal so that the yarn take-up speed is constant. In addition, in a tension control type spindle winder, the winding thickness of the yarn layer formed on the bobbin is used as a parameter, and the yarn tension detected by a tension detector (not shown) is adjusted to a predetermined value. Control.

A bracket 40 is fixed to the machine frame 1 as shown in FIGS. 1 to 3, and a rotary actuator 42 is attached to the tip of the bracket 40.

The thread hook swingably supports an arm 41 on the machine frame 1, and the thread hook connects the arm 41 to the rotary actuator 42. The thread hook is at the tip of the arm 41, and the thread hook is at the bar 43.
As shown in FIG. 3, a large number (four in FIG. 3) of thread guides 44 are provided at equal intervals on the thread bar 43.

By operating the rotary actuator 42, the thread hooking guide 44 provided at the tip of the arm 41 is
The thread hook is swingable between the standby position shown in the figure and the position shown in FIG.

The thread hook shown in FIG. 2 is located at the guide 44.
is set to be located on an extension of an imaginary straight line passing through the gap between the traverse guide 4 and the contact roller 6.

A thread removal guide 9 extending in the traverse direction of the traverse guide 4 is swingably supported on the upper part of the traverse box 5 by a pin 8. The tip of the rod 10a of the swing cylinder 10 is connected to the thread removal guide 9, and the rear end of the swing cylinder 10 is pin-engaged with the upper part of the traverse box 5. When the rod 10a protrudes, the thread removal guide 9 swings to intersect the thread path of the thread Y, as shown in FIG. 2, and the running thread Y is separated from the traverse guide 4.

The punch guide 11 is located facing the yarn removal guide 9 while sandwiching the yarn Y, and is movable along the traverse direction by a punch moving cylinder 18.
has one U-shaped recess 11a (FIG. 3) in each traverse area of each traverse guide 4.

A bracket 47 projects above the slide block 3, and a large number (four in FIG. 3) of thread distribution guides 48 are attached to the bracket 47 at equal intervals.

As shown in FIG. 5, the turret 12 is rotatably supported around a support shaft 12a. A bobbin holder 13, 13' is rotatably protruded from the turret 12. The bobbin B has appropriate thread locking means, such as a thread hook S having a U-shaped cross section, which is perforated in the circumferential direction on the circumferential surface near the end face of the bobbin B.

Four bobbins B are attached to each of the bobbin holders 13 and 13'.

A pair of positioning recesses (not shown) are bored in the circumferential surface of the turret 12 at symmetrical positions with respect to the support shaft 12a. Further, the machine frame 1 is provided with a cylinder (not shown) for advancing and retracting a positioning pin (not shown) that fits into the recess.

The main cylinder (not shown) supports the slide block 3 by pushing up a rod (not shown) with pressure fluid supplied through a conduit (not shown). The above pressure fluid is
Against the total weight of the slide block 3 carrying the traverse guide 4, traverse box 5, and contact roller 6, as well as the frictional force generated when the slide block 3 slides along the slide shaft 2, the slide block 3 moves onto the bobbin. It is controlled by a control valve so that it is pushed upward with a predetermined force depending on the winding thickness of the yarn layer formed on the surface.

As shown in FIG. 5, a pulley 25 is attached to the support shaft 12a of the turret 12, and a belt 27 is stretched between the pulley 25 and the output shaft 26a of the electric motor 26 for rotating the turret. Turret 1 by motor 26
2 can be rotated.

In FIG. 5, the rotation guide 28 is made up of two semicircular members that can be divided into two in the circumferential direction, and the turret 12
The rotating guide 28 is attached to the machine frame 1, and a cam groove 28a is formed in the inner circumferential surface thereof.

Bobbin holder mounting hole 12G drilled in turret 12
The sliding cylinder 29 of the bobbin holder 13, 13' is mounted so as to be slidable in the axial direction. Pin 3 is attached to the sliding cylinder 29.
1 is screwed onto the cam follower 30, which is fitted into the cam groove 28a. As the turret 12 rotates, the cam groove 28a cooperates with the cam follower 30 to
3 or 13' is moved in the axial direction toward the disc side of the turret 12, and then returned to its original position.

In addition, a bearing 32.33 is provided in the center hole 29C of the sliding cylinder 29.
The shaft 34 is inserted therethrough. A head 35 for mounting the bobbin B is attached to the tip of the shaft 34, and an output shaft of a spindle drive motor 36 is connected to the rear end.

Next, the threading method of the present invention will be explained based on FIGS. 1 and 2.

When threading, the arm 41 is placed in the state shown in FIG. In this state, a push button (not shown) is pressed to remove the positioning pin (not shown) from the recess of the turret 12 using a cylinder, and the electric motor 26 for rotating the turret moves the turret 12.
is rotated in the direction of arrow T in FIG. 2 (that is, in the opposite direction to the rotational direction of the bobbin holder 13 during steady winding), the bobbin holder 13 is brought into pressure contact with the contact roller 6, and the rotation of the turret 12 is stopped. .

Next, the rotary actuator 42 is actuated to rotate the arm 41 from the state shown in FIG. 1 to the state shown in FIG. 2. Furthermore, the swing cylinder 10 provided above the traverse box 5 is operated to swing the thread removal guide 9 toward the contact roller 6 side.

In this state, while suctioning the yarn Y with the suction gun 45, the guide 48 distributes the yarn above the traverse box 5.
The thread is passed through the contact roller 6 and the thread removal guide 9, and then the thread is passed through the guide 44 through the thread hook provided on the bar 43 at the tip of the arm 41.

As mentioned above, the thread guide 44 is on the extension of the imaginary straight line passing through the gap between the traverse guide 4 and the contact roller 6, so the thread being sucked into the suction gun 45 substantially comes into contact with the contact roller 6. Therefore, the yarn Y is not wound around the contact roller 6.

In this way, the threader presses a push button (not shown) after threading the thread on the guide 44. Then, the bobbin holder 13 is activated by the spindle drive motor 36. In order to prevent damage to the bobbin B, it is preferable to move on to the next operation as soon as a predetermined value is reached.

In this embodiment, the rotation speed of the bobbin holder 13 is detected by the contact roller 6. When the detector 65 detects that the number of rotations of the contact roller 6 has reached a predetermined value, and the number of rotations of the bobbin holder 13 reaches the predetermined number of rotations, the punch guide 11 is moved in the direction of the traverse box 5 by the punch guide swing cylinder 18. The thread Y is fixed in a U-shaped recess 11a formed in the punch guide 11 by swinging.

Next, the threader swings the arm 41 clockwise in FIG.
The turret 12 is again rotated in the direction of arrow T by the turret rotation electric motor 26 before contacting the turret 12 (this may be done at the same time or immediately after).

As a result, the bobbin holder 13 is rotated together with the turret 12. As the turret 12 rotates, the cam follower 30 provided on the bobbin holder 13 and the cam groove 28a formed on the cam 28 engage, and the bobbin holder 13 with the empty bobbin attached moves axially to the outside of the machine (the arrow in FIG. 3). move in the opposite direction to A). At the same time, the yarn Y is inserted into the U-shaped recess 11a.
The punch guide 11 is moved in the six directions of arrows in FIG. 3 by a punch guide moving cylinder (not shown) while being held at the same position, and returns to its original position. By this movement of the bobbin holder 13 and punch guide 11, a transfer coil (commonly known as a pig till) is formed on the empty bobbin B attached to the bobbin holder 13.

Even while the turret 12 is rotating, the suction gun 45
The contact angle of the contact roller 6 (
The winding angle) is small 1, thus preventing the yarn Y from being wound around the contact roller 6.

Further, before and after the bobbin holder 13 reaches the normal winding position, the swing cylinder 10 returns the thread removal guide 9 to its original position, and the punch guide swing cylinder 18 returns the punch guide 11 to its original position. As a result, the yarn Y is released from the yarn removal guide 9 and the punch guide 11,
It is captured by the traverse guide 4 and traversed.

Next, the rotary actuator 42 returns the thread hooking arm 41 to the state shown in FIG. 1, and normal winding is started.

[Other embodiments]

In the above description, a spindle-driven automatic winder has been described, but the present invention can also be implemented in a friction-driven automatic winder, a spindle-driven manual winder, and a friction-driven manual wanderer. Therefore,
The term contact roller as used herein includes contact rollers of spindle driven winders and friction rollers of friction driven winders.

In addition, in the embodiment described above, the thread hook was provided at the tip of the arm, and the thread hook guide was fixed to the bar, but sometimes the thread hook may be moved so that the guide moves toward the front side. good.

〔Effect of the invention〕

According to the present invention, the operator sometimes places the thread on the thread guide when both the contact roller and the bobbin holder are not rotating, and then speeds up the contact roller and the bobbin holder. In other words, the contact roller is not pressed against the bobbin until the yarn hook is hooked onto the guide.

Therefore, the time required for pressing and rotating the bobbin attached to the thread bobbin holder and the contact roller is shortened, and therefore, the risk of the bobbin bursting is greatly reduced.

Furthermore, according to the method of the present invention, remote control is possible, and even if the bobbin were to burst, the inventor would not have to approach the rotating body, and therefore would not be injured by fragments of the burst bobbin. It's safe.

Furthermore, even if the yarn comes into contact with the contact roller, the contact roller is not yet rotating at this point, so the yarn gets wrapped around the contact roller. This will improve the quality of threading.

Therefore, according to the present invention, the winding speed is 5500m7mi.
It is possible to safely, reliably and smoothly thread thread onto a high speed winding machine exceeding n.

[Brief explanation of the drawing]

1 and 2 are front views of the embodiment of the present invention, FIG. 3 is a left side view of FIG. 2, and FIGS. 4 and 5 are partial sectional views of FIG. 1. 3...Slide block, 4...Traverse guide, 5...Traverse box, 6...Contact roller, 9...Thread removal guide, 1
0... Swing cylinder, 12... Turret, 13
．． 13'...Bobbin holder, 36...Spindle drive motor, 41...Arm for thread hooking, 42...Rotary actuator, 43...Bar for thread hooking, 44...Guide for thread hooking,
45...Suction gun.

Claims (1)

[Claims] 1. A winding machine having a thread hooking means for positioning the thread at a predetermined position and hanging the thread onto the bobbin, and winding the thread by bringing a contact roller into pressure contact with a bobbin holder on which the bobbin is attached, When threading, the rotation of the bobbin holder is stopped and the thread is threaded onto the thread threading means, and then, after increasing the speed of the bobbin holder to a predetermined rotation speed,
A thread threading method in a winding machine, characterized in that the thread threading means threads the thread onto a bobbin on the bobbin holder.