JPH06313220A - Yarn knotter for end yarn in yarn package - Google Patents

Abstract

PURPOSE:To obtain a yarn knotter capable of surely forming a knot of end yarn of a yarn package with a simple mechanism according to simple operation. CONSTITUTION:The yarn knotter for end yarn 3 of a yarn package 2 is composed of a yarn package supporting means (A) for rotatably supporting the yarn package 2, a yarn guiding means (B) for forming an outer loop 5 and a threading loop 7 on the upstream side of the end yarn 3, a tying loop forming means (C) for forming a tying loop 6 in the outer loop 5, a threading loop holding means (D) for inserting the threading loop 7 into the tying loop 6 and a yarn holding and cutting means (E) for sucking and holding the end yarn 3 and cutting the yarn. The knot can readily be untied in need.

Description

Detailed Description of the Invention

[0001]

[Industrial application] In the process of manufacturing a raw yarn, a predetermined amount of yarn continuously spun by a take-up winder is wound around a bobbin or the like (the package in this state is hereinafter referred to as a yarn package). Is transferred to the next step and subjected to necessary processing, or is packaged as a product as it is and then packed in a cardboard box or the like and shipped.However, the present invention does not allow the thread wound in the thread package to be unwound during transportation. The present invention relates to a yarn knot tying device for tightly tying the end-of-winding end yarn to a yarn constituting a yarn package.

[0002]

2. Description of the Related Art Conventionally, various methods have been devised for a method of firmly tying and fixing a winding end thread to a thread constituting a thread package so that the thread wound around a bobbin cannot be easily unwound. Even if it is said that the end thread is firmly fixed, it must be tied easily and quickly, and once the knot is tied, it cannot be untied naturally, but it must be easily untied when attempting to untie. In this type of work, a skilled worker conventionally picks up the yarn packages one by one and, in some cases, uses a simple jig to tie the end yarns together. However, as spinning technology has developed in recent years, high-speed continuous spinning machines have appeared, so when a predetermined amount of thread is wound around the bobbin and it is fully wound, the thread is quickly cut and the end thread is tied and fixed. The bobbin must be transferred to the next step for another processing, or the bobbin must be packed as a product in a cardboard box as it is and shipped, while an empty bobbin must be quickly supplied to the spinning machine.

Therefore, there has been a long-felt need for a device for simply and quickly tying yarns with as little manual effort as possible, but none of the conventional devices of this type have merits and demerits. For example, the yarn knotting device proposed in Japanese Patent Laid-Open No. 63-219636 has a complicated mechanism and is difficult to operate, and in addition, there is a risk that the knot knotted with an oil agent adhering to the surface of the yarn will be easily broken. there were.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and the mechanism of the device is to tie the end yarn wound on the bobbin to the yarn constituting the yarn package by a simple and easy operation. The purpose of the present invention is to provide a thread knot tying device that can be easily untied by simply pulling the end thread when loosening the thread. A thread that can be fastened by tying the end thread by forming a knot ring with the thread portion on the upstream side of the above, forming a constriction portion by double the through ring, and inserting the constriction portion into the knot ring. The purpose is to provide a knotting device.

[0005]

A yarn knot tying device for forming a knot on a winding end yarn of a yarn package according to the present invention comprises a yarn package supporting means for rotatably supporting the yarn package,
Thread guide means for freely rotating around the axis of the thread package on the thread package supporting means to form an outer ring and a through ring on the upstream thread portion continuous with the end thread, and orthogonal to the axis of the thread package. Is provided with a knot forming means for forming a knot on the outer ring and a thread gripping finger for detachably gripping the through ring, and is movable in a direction orthogonal to the axis of the thread package. It is characterized by comprising a through ring gripping means for inserting the through ring into the knotting ring, and a thread holding / cutting means for sucking / holding an end thread of the thread package and cutting / removing the thread at a predetermined position of the thread. .

By using the knot tying device having the above-mentioned structure, the end yarn of the yarn wound on the bobbin can be easily knotted, and the knot can not be easily released, but the end yarn can be pulled. You can make the knot easy to untie.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings showing a preferred example of the knot tying device of the present invention. First, the procedure of knotting performed by the knotting apparatus of the present invention will be described below with reference to FIG. In FIG. 1, 1 is a bobbin, 2 is a yarn package, and 3 is a winding end yarn. FIG. 1A shows a state in which a predetermined amount of thread has been wound in the spinning winding step. When the bobbin is switched, a portion X, which is usually called a bar-wound, in which the yarn is wound in four or five layers is formed on the yarn package. Therefore, the operator removes the unnecessary portion by using a simple jig and the end yarn 3 is removed. The yarn is unwound until it is located at the center of the yarn package 2 (Fig. 1 (B)). Reference numeral 5 denotes an outer ring (FIG. 1 (C)) formed on the upstream yarn portion of the winding end yarn 3, and the outer ring 5 is twisted once to form a knot ring 6 (FIG. 1 (D)). On the other hand, a thread ring 7 is formed by the thread portion between the end thread 3 and the knot ring 6, and a constricted portion 8 is formed in the central portion of the thread ring 7 (FIG. 1 (E)). The through ring 7 is folded in two and inserted into the knot ring 6 with the constricted portion 8 at the beginning (FIG. 1 (F)). Then pulling the necked portion 8 tangentially to the surface of the yarn package 2,
Since the end thread 3 is pulled in the direction opposite to the constricted portion 8, a knot 9 is formed. (FIG. 1 (G)).

FIG. 2 is a front view showing an example of the knot tying device of the present invention, and FIG. 3 is a side view thereof. FIG. 2 shows the relative positional relationship and configuration of the thread package 2, the knot forming means C, the through wheel gripping means D and the thread holding and cutting means E in more detail. In FIG. 3, the thread package supporting means A and the thread guiding means B are shown. , And the relative positional relationship and configuration of the knot forming means C are illustrated in more detail.

First, the yarn package supporting means A will be described with reference to FIG. In FIG. 3, reference numeral 11 denotes a pedestal having a cylindrical top portion, into which a rotatable cylindrical housing 18 is inserted, and further into which a rotatable cylindrical peg 12 is inserted. Reference numeral 10 is a shaft that can move back and forth in the peg 12, and a cylinder 13 is pivotally supported at the rear end of the shaft 10. Reference numeral 14 denotes a plurality of claws attached to the peg 12, and when the cylinder 13 is operated to move the shaft 10 forward and backward, the claw 14 stands up, and when the shaft 10 is moved backward, the claw 14 is turned down. FIG. 4 is a schematic front view for explaining the motion transmitting mechanism of the peg to the yarn package. A bar 12a protruding toward the opening 14a provided in the cylindrical peg 12 is fixed to the peg 12, and this bar is fixed. 12a
An L-shaped claw 14 is rotatably attached to the end of the pin 12 about a pin 12b. The tip of one end of the claw 14 is processed into a spherical shape, and a recess d is formed in the shaft 10 so that the tip of the claw 14 fits. Therefore, when the shaft 10 slides in the direction of the arrow, the L-shaped claw 14 rotates clockwise and the other end of the claw 14 stands up.

Reference numeral 2 is a yarn package wound around the bobbin 1. The yarn package 2 sent from a package supply device (not shown) is inserted into the tip of the peg 12, and the cylinder 13 is operated as described above. The hook 14 is raised and the inner wall of the bobbin 1 is pressed by the hook to fix the yarn package 2. Reference numeral 15 is a first gear that is pivotally supported at the rear end of the peg,
Since the gear is connected to the yarn package rotating motor 16 by the transmission device 17, when the motor 16 is operated, the peg 12
Rotates, and the yarn package 2 fitted in the peg 12 also rotates in synchronization. Reference numeral 19 is a second gear fixed to the rear end of the housing 18. Since the second gear 19 is connected to the yarn guiding means rotary motor 20 via a transmission device 21, when the motor 20 is operated, the housing 19 is pegged. 12. Rotates independently of shaft 10.

The yarn guiding means B is fixed at the tip of the housing 18 so as to be orthogonal to the shaft 10, and 30 is the housing 1.
8 is a cylinder fixed orthogonally at the front end portion, and a support body 31 is laterally provided at the rod tip end of the cylinder, and a cylinder 32 is also fixed outside the support body 31. Reference numeral 33 denotes a thread guide guide which is loosely fitted in a support body 31 orthogonal to the rod of the cylinder 30 so as to be able to move forward and backward. The thread guide guide 33 keeps a parallel state with the rod of the cylinder 32, and the rear end of the guide 33. The rod end of the cylinder 32 is fixed by a connecting tool. Therefore, when the motor 20 is operated, the yarn guide means B rotates around the yarn package 2, and when the cylinder 30 is activated, the yarn guide guide 33 moves toward or away from the surface of the yarn package 2, and when the cylinder 32 is activated. The yarn guide 33 moves in parallel on the surface of the yarn package 2 with a slight gap.

The knot forming means C is located below the yarn package 2 and in the vicinity of the yarn guiding means B, facing the guiding means B. Reference numeral 40 is an L-shaped guide having two substantially L-shaped hooks, 41 is a cylinder for moving the L-shaped guide up and down, and 43 is a motor for rotating a shaft connected to the L-shaped guide 40. The cylinder 41 and the motor 43 are integral members. Reference numeral 42 is an L-shaped guide horizontal cylinder horizontally provided in the direction orthogonal to the cylinder 41, and the rod end of the cylinder 42 is connected to a knot forming means C in which the cylinder 41 and the motor 43 are integrated. Therefore, when the cylinder 42 is actuated to move the rod back and forth, the L-shaped guide 40 moves toward and away from the thread guiding means B, and when the cylinder 41 is actuated, the L-shaped guide 40 moves.
The head of the L-shaped guide 40 is freely rotated by approaching or moving away from the surface of the thread package 2 and by operating the motor 43.

As shown in FIG. 2, the knot-ring forming means C is located below the thread package 2, the through-wheel gripping means D is located at a position orthogonal to the longitudinal direction of the thread package, and the thread-holding / cutting means E is above the thread-loop gripping. It is located opposite the means D with the knot forming means C in between and facing the through-wheel holding means D. First, the through wheel gripping means D will be described. 50 in the figure
Is a two-thread gripping finger with its tip protruding at an acute angle, and the rear end of the finger is connected to the parallel air chuck 51. Therefore, by supplying air from the air tank 52 to the air chuck 51, the finger 50 Can be opened and closed freely.

FIG. 5 is a schematic view showing the mechanism of the parallel air chuck 51 described above. The racks 50a and 50b are connected to the two thread gripping fingers 50 that face each other, and the rack 51a is connected to the rod of the cylinder 51b. Are engaged with the gear 50c, respectively, the air cylinder 51b
Is operated to extend the rod and extend the rack 51a in the direction of the arrow, the gear 50c rotates clockwise. Gear 50c
Engage with the racks 50a and 50b respectively,
The rack 50a is lowered and the rack 50b is raised, so that the finger 50 is closed. Reference numeral 53 is a moving table on which the parallel air chuck 51 and the air tank 52 are placed, and the table is engaged with the feed screw 54 at the bottom thereof. Reference numeral 56 denotes a motor, the shaft of which is connected to the feed screw 54 through a transmission device 55. Therefore, when the motor 56 is operated, the feed screw 54 rotates, the moving table 53 moves, and the finger 50 forms a knot ring. The means C can be freely approached or moved away.

As described above, the thread holding / cutting means E is located opposite to the through wheel gripping means D with the thread package 2 in between. Reference numeral 60 is a yarn cutting device mounted on the frame 61, and 70 is a yarn suction device. First, the thread cutting device will be described with reference to FIG. 6. In the figure, 63 is a cylinder fixed to the frame 62, and an L-shaped slide plate 64 is connected to the rod tip end of the cylinder 63. The bottom of the slide plate 64 is provided with a projection, and the frame 62 is provided with a recess. The projection and the recess are movably fitted to each other. Move freely. 65
Is a block consisting of three fixed on the tip of the slide plate, and the two blocks located on both sides have a substantially trapezoidal shape,
A triangular block is located between the two trapezoidal blocks at a predetermined distance from the trapezoidal block. Reference numeral 67 is a scissor including two blades 67a and 67b slidably fitted on a shaft 66 standing upright on the frame 62, and the rear portion of the scissors is the block 65 described above.
Have been inserted between each.

Accordingly, when the cylinder 63 is operated to advance the slide plate 64, the central triangular block of the three blocks is broken between the two blades, and the scissors 67a and 67b are forced. Open to slide plate 6 again
When 4 is retracted, scissors 67a and 67 are cut on both side blocks.
Since b is forcibly closed, the thread is easily cut by sandwiching the thread between the blades. Reference numeral 70 denotes a yarn suction device positioned above the yarn cutting device 60. The device 70 includes a known air sucker 71, a hose 72, an air sucker moving cylinder 73, and a nozzle 74 facing the surface direction of the yarn package. It is composed of a pressure tube 75. Therefore, the cylinder 73 is activated and the nozzle 74
To extend near the surface of the yarn package 2 and
When the air is blown from 5 to the air sucker 71 and exhausted from the hose 72, the end yarn 3 at the rearmost end wound around the yarn package 2 is sucked into the nozzle 74. A thread guide 80 is fixed to the rod end of a cylinder 81 mounted on the frame 61 and has a bifurcated head.

Since the present invention has the above-mentioned structure, its operation will be described below with reference to FIGS. When a predetermined amount of thread is wound around the bobbin 1 in the spinning process, the thread is automatically cut, the thread package is removed from the spinning machine, and the unnecessary thread winding portion is removed, and then the thread package 2 is inserted into the peg 12. To be done. The cylinder 13 is operated to move the shaft 10 forward so that the tab 14 is erected to fix the yarn package 2. Then, the motor 16 is operated to rotate the yarn package 2 to operate the air sucker moving cylinder 73 to operate the nozzle 74. Is moved forward to approach the surface of the yarn package, air is blown from the pressure tube 75 to the air sucker 71, and the end yarn 3 wound around the yarn package is sucked into the nozzle 74. Since a sensor (not shown) is attached to the discharge side of the air sucker 71, it is confirmed that the end yarn 3 is sucked into the nozzle 74. At that time, the operation of the motor 16 is stopped.

Next, the motor 20 is operated to rotate the yarn guide means B around the yarn package 2 in the opposite direction to the yarn wound around the yarn package 2, and at the same time, the cylinder 3 is rotated.
0.32 is operated to move the yarn guide 33 to hook the upstream yarn portion of the end yarn to form the outer race 5. Since a sensor (not shown) is attached to each of the member connecting the rod end of the cylinder 32 and the rear end of the thread guide 33 and the side wall of the base 11 corresponding to the member, the thread forming the outer ring 5 is formed. The guide guide 33 is positioned directly below the yarn package 2. At that time, the motor 20 is stopped (see FIG. 7).
(A)). Then, the cylinders 41 and 42 are operated to bring the L-shaped guide 40 close to the outer ring 5 and the outer ring 5 is hooked by the hook portion thereof. As described above, the outer ring 5 is provided with the thread guide guide 33.
Since the outer ring 5 is hooked by and is applied with tension and the outer ring 5 has a constant shape, the L-shaped guide 40 is inserted into the outer ring 5 by performing a predetermined movement. Next, the cylinder 32 reversely operates and the yarn guide guide 33 moves backward and separates from the outer ring 5 (see FIG. 7).
(B)). Then, the L-shaped guide rotation motor 43 is operated to rotate the L-shaped guide 40 by 90 degrees, and the outer ring 5 is twisted to form the knot ring 6 (FIG. 8A).

Next, the cylinder 32 is operated to retract the cylinder rod to extend the yarn guide guide 33 and reversely operate the motor 20 to rotate the yarn guide means B in the direction opposite to the previous one. Then, the thread between the end thread sucked into the nozzle 74 and the knot ring 6 is hooked by the thread guide 33 to form the through wheel 7 (FIG. 8 (B)). Then cylinder 81
Is operated to advance the yarn guide 80, the forked portion of the guide 80 is gripped by the through ring 7, and when the guide is further advanced, the through ring 7 is held by the yarn guide guide 33 and the rear end of the yarn is guided. Since the end thread which is a portion is sucked and fixed to the nozzle 74, the central portion of the through wheel 7 is constricted and the constricted portion 8 is formed.
Are formed (FIG. 9 (A)).

Next, the motor 56 is operated to move the yarn gripping finger 50 forward to insert the finger 50 into the knot ring 6, and to move it further forward to operate the parallel air chuck 51 to open the yarn gripping finger 50 to open the yarn holding finger 50. The constricted portion 8 is gripped and the finger 50 is closed. Then, the motor 56 is reversely operated to retract the thread gripping finger 50 and fold the doubled through wheel 7 into the knotting wheel 6 so as to be hidden (FIG. 9B). At this time, the cylinder 30 is operated to shorten the cylinder rod and slightly raise the thread guide guide 33 to allow the through wheel 7 to have a clearance. In addition, it is preferable to attach a member such as rubber to the inside of the tips of the two fingers 50 as a slip stopper in order to firmly grip the thread. Subsequently, the cylinder 81 is reversely operated to retract the yarn guide 80, and similarly, the cylinder 42 is operated to extend the cylinder rod to retract the L-shaped guide 40, and the guide 40 is pulled out from the knot ring 6 (Fig. 9
(B)). Then, the motor 5 is operated to operate the finger 5
The knot 9 is formed by retracting 0 in the tangential direction of the yarn package 2 and operating the motor 20 to rotate the guide 33 of the yarn guiding means B in the direction opposite to the finger 50 (FIG. 10).

When the knot 9 is completed, the cylinder 63 of the thread cutting means E is operated to move the slide plate 64 forward to open the blades 67-a and 67-b, and the end thread sucked into the nozzle 74 by the blade. The yarn between the knots 9 is sandwiched by open blades, the cylinder 63 is reversely operated, the slide plate 64 is retracted, and the blades 67-a and 67-b are closed to cut the yarn. The cut yarn is sucked by the hose 72 of the yarn suction device 70 and discharged to the outside of the system. When the end thread with the completed thread knot is cut, the cylinder 13 is reversely operated to retreat the shaft 10 to lower the claw to release the fixation between the bobbin 1 and the peg 12, and the package with the end thread tied A knot is formed in the end yarn by removing it from the peg 12 and inserting a new next yarn package into the peg 12 and performing the same operation as described above.

Since the operations of the motors, cylinders and the like which compose the thread knotting apparatus according to the present invention are all controlled by the central controller, the thread knot is formed on the end thread after the thread package is inserted into the peg. This is automatically performed continuously until the end thread is cut. And the outer ring
The knots and loops are both formed on a straight line directly under the yarn package, and the end yarns are sucked and the end yarns are cut on the same straight line, so that the yarns are securely gripped to form a knot. And the end thread can be cut. The thread knot formed in this way cannot be unraveled simply by contact, but the thread knot can be easily unraveled by slightly pulling the end thread.

[0023]

The knot tying device according to the present invention has a simple mechanism and is easy to operate. The knot knotting device is inserted into a peg and fixed, and the end yarn of the yarn package is sucked and fixed. Then, an outer ring is formed by the thread portion on the upstream side of the end thread, and the outer ring is twisted to form a knot ring, and a thread between the end thread and the knot ring forms a through ring, and a constricted portion is formed at the center thereof. The thread knot is formed by inserting the necked portion into the knot ring and pulling the necked portion, so that the knot of the end thread of the thread package can be completed easily and quickly. Since it is possible to completely unmanned and automate the yarn knotting work of the yarn package, which conventionally relied on manual work, the labor saving effect is great, and naturally it also greatly contributes to productivity improvement. Affect the textile industry Result there is a remarkable thing.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a procedure of a method of forming a knot on a winding end yarn of a yarn package adopted by a yarn knotting device of the present invention, in the order of FIG. 1 (A) to FIG. 1 (G). 2 shows a state in which a knot is formed by the procedure of.

FIG. 2 is a front view of an essential part showing an example of the knot tying device of the present invention.

FIG. 3 is a side view of the thread knotting device of the present invention shown in FIG.

FIG. 4 is a schematic front view illustrating a motion transmitting mechanism of a peg to a yarn package.

FIG. 5 is a schematic front view showing an opening / closing mechanism of a thread gripping finger in the through-wheel gripping means.

6A and 6B are diagrams showing a yarn cutting device in the yarn holding / cutting means, FIG. 6A being a front view and FIG. 6B being a plan view.

FIG. 7 is a perspective view for explaining a thread knotting procedure performed using the thread knotting apparatus of the present invention shown in FIGS. 2 and 3, in which the thread is arranged in the order of FIG. 7 (A) to FIG. 7 (B). The state in which a knot is formed is shown.

FIG. 8 is a perspective view similar to FIG. 7 for explaining the thread knotting procedure, in which a thread knot is formed in the order of FIG. 8 (A) and FIG. 8 (B) following FIG. 7 (B). Indicates.

FIG. 9 is a perspective view similar to FIG. 7 for explaining the thread knotting process, in which the thread knot is formed in the order of FIG. 9 (A) and FIG. 9 (B) following FIG. 8 (B). Indicates.

FIG. 10 is a perspective view similar to FIG. 7 for explaining the thread knotting procedure, and is a diagram showing the final thread knotting procedure following FIG. 9 (B).

[Explanation of symbols]

 A ... Thread package support means B ... Thread guide means C ... Knot ring forming means D ... Through ring gripping means E ... Thread holding / cutting means 2 ... Thread package 3 ... End thread 5 ... Outer ring 6 ... Knot ring 7 ... Thread ring 8 ... Constriction 9 ... Knot 33 ... Thread guide guide 40 ... L-shaped guide 50 ... Thread gripping finger 67 ... Scissors 71 ... Air sucker

Claims (1)

[Claims] 1. A yarn knotting device for forming a knot on a winding end yarn of a yarn package, the yarn knotting device supporting the yarn package rotatably (A).
A thread guide means (B), which freely rotates around the axis of the thread package on the thread package supporting means (A) to form an outer ring and a through ring in the upstream thread portion continuous with the end thread, a thread package. Is movable in a direction orthogonal to the axis of the thread, and is provided with a knot forming means (C) for forming a knot on the outer ring, and a thread gripping finger for detachably gripping the through ring. A through-wheel gripping means (D) that is movable in a direction orthogonal to the above and inserts the through-wheel into the knot ring;
A yarn tying device for end yarns of a yarn package, comprising: a yarn holding / cutting means (E) for sucking / holding the end yarns of the yarn package and cutting / removing the yarn at a predetermined position of the yarn.