JPS5938326B2 - Yarn splicing device in spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a yarn splicing device for an automatic yarn splicing machine in a spinning machine.

In general, automatic yarn splicing machines use a lockstitch method, which pulls out the yarn end from the pipe yarn that has been spun and wound up, and attaches it to the fleece that is being spun, or a lockstitch method, in which the thread is spun separately without pulling out the yarn that has been spun and wound. There are two main types: the succession method, in which the date is recorded by winding the spare thread again.

Various types of yarn splicing devices have been proposed for use in this automatic yarn splicing machine.

However, in these systems, yarn splicing is performed by bringing the splicing roller or splicing apron into contact with the front bottle roller to release the grip on the warp yarns, so the fleece being spun has a width of 4 to LDam. It was completely powerless against the phenomenon of traversing over a long distance, and could not perform sufficient splicing.

Recently, however, a yarn splicing device that takes into consideration the phenomenon of traversing of fleece during spinning has been introduced in Japanese Patent Laid-Open No. 49-35631.

This yarn splicing device releases the grip on the warp yarns by bringing the splicing rollers or the splicing fronds into contact with the front bottom rollers, and also causes the warp yarns to move obliquely in the axial direction of the front bottom rollers. Since the warp yarn moves passively in the axial direction of the front bottom roller, the traverse becomes uncertain, and the width of the traverse cannot be increased mechanically.

In view of these points, the present inventor has developed a yarn splicing device that improves the conventional yarn splicing device and uses a new and simple mechanism to positively and reliably move the warp yarns by the required amount in the axial direction of the front bottom lard. As a result of intensive research aimed at developing this invention, the present invention I was achieved.

To this end, the present invention has the following configuration.

That is, the present invention provides a yarn splicing device 1 which is configured such that warp threads pulled out from a pipe thread being wound up or from a spare pipe thread are moved while being held at the tip, and are joined to a fleece thread being spun. The yarn splicing device includes a main body and a splicing cradle, a splicing apron or a splicing roller is added to the splicing cradle, and the rear center portion 1 of the splicing cradle is the front end of the support shaft 9. is fixed, the support shaft 9 is inserted through the spring in the main body, the rear end of the support shaft 9 is fixed to the support piece, and on the other hand, the upper surface of the main body has gripping tools 19, 20 at the tip. The levers 17 and 18 having the levers are urged to rotate clockwise or counterclockwise and pivoted on the support shaft 16, and when the joining apron or the joining roller abuts the front bottom roller, the levers 17 and 18 are pivoted to the rear end of the joining cradle. The provided sleeve bar rotates the lever 18 counterclockwise or clockwise to release the gripping tools 19, 20.
This is an old yarn splicing device for spinning machines, which is characterized by gripping the warp yarns, moving the front rollers one turn in the axial direction, and joining them to the frieze.

Next, the present invention will be explained based on a first embodiment shown in the drawings.

FIG. 1 is a side view showing the relative relationship between a conventional yarn splicing device and a front roller.

In FIG. 1, the yarn is gripped by a Yl front bottom roller 1 and a front top roller 1' and sent out, and twisted and wound by a traveler and a ring (not shown).

When the yarn breaks, the fleece Y is sucked by the suction action of the pneumatic clearer 2 in the fleece Y cut state.

On the other hand, the yarn splicing device 4 is attached to a yarn splicing rod 3 which is of a sliding type or a swing type back and forth within the frame of the automatic yarn splicing machine, and is attached to a yarn splicing rod 3 which is a sliding type or a swing type in the automatic yarn splicing machine frame, and is located along the one-dot chain line in A and at the two-dot chain line in the figure. It moves forward from there, holds the warp yarn Y and moves to the front bottom roller 1 side.

2 to 4 relate to the present invention; FIG. 2 is a partially cutaway side view of the yarn splicing device, FIG. 3 is a plan view taken along line I-1 in FIG. 2, and FIG. This is also a plan view showing the platform in contact with the front bottom roller 1.

First, the configuration of the yarn splicing device will be explained. The S1 drawing is for illustration purposes only, and some changes may be made without departing from the spirit of the invention.

In FIG. 2, the main body 6 of the yarn splicing device 5 fixed to one end of the yarn splicing rod 3 (not shown) is composed of a square block with a stepped portion. 6' is formed to slidably support the joining cradle 7.

Two large and small rollers are freely supported on the joining cradle 7I, and a joining apron 8 is suspended between the rollers.

Although the rollers can be of the same size, it is preferable to make the inner roller smaller as shown in FIG. 1 from the viewpoint of downsizing the joining cradle.

Here, the joining apron 8 may not be suspended and the roller may be used as the joining roller.

Of course, it is more preferable to use the joining apron 8 since there is no fleece Y knot wrapping.

A stepped support shaft 9 is fixed to the rear central portion of the joining cradle 7, and is inserted into the stepped hole 10 drilled in the main body 61.
It is inserted through the coil spring 11 and is always biased and supported toward the distal end side.

The stepped support shaft 9 passes through the main body 6, and a support piece 14 of a gripper 12, 13 for gripping the warp yarn Y, preferably reliably, is fixed to the rear end with a bolt 15 or the like.

As shown in Fig. 3, the main body 6I has levers 17 and 18 pivotally supported so as to be rotatable about a support shaft 16, and the ends of the levers 17 and 1B are used to softly grip the warp threads Y. Grips 19 and 20 are formed.

The lever 17 is urged to rotate clockwise by a torsion spring 21, and is given a force to be gripped softly by the torsion spring 211.

The rotation limit is regulated by the pin 22.

The lever 18 is urged by a coil spring 231 to rotate clockwise about the support shaft 16, which is the same fulcrum as the lever 17.

One end of the coil spring 23 is attached to the rear of the main body 6.

A portion of the lever 18 forms a cam 24, which
When the push rod 25, which is a part of the joint cradle 7, comes into contact with the joint cradle 7 and the joint cradle 7 is pushed in, the levers 17 and 1B sequentially rotate counterclockwise to the state shown in FIG. 4E. reach.

Next, an outline of the operation of the yarn splicing device 5 will be explained.

In FIG. 3I, the tree line constantly traverses the area indicated by Y-1 and Y-2 in the figure.

The warp yarns Y are preliminarily separated from the outside S of the traverse end Y-1 and the second
The warp yarns Y are guided between the gripper 1g and the joining apron 8 shown in the figure, and when the yarn splicing device 5 moves forward, the warp yarns Y
9 and 20, the thread is firmly gripped by grippers 13 and 13', and the excess portion is cut off using a thread cutter (not shown) at 8 points in FIG.

When the yarn splicing device 5 moves further forward and the joining apron 8 comes into contact with the front bottom roller 11, the warp yarn Y is gripped by the joining apron 8 and the front bottom roller 1 and is pulled out at the surface speed of the front bottom roller 1. try

On the other hand, the joining cradle 7 is pushed into the main body 6I, and the stepped support shaft 9 of the joining cradle 7 retreats relative to the main body 61, so that the gripping tool 13 shown in FIG. The warp yarn Y, which was tightly held at 13', is released.

As the joining cradle 7 is pushed in in FIG.
01i The support shaft 16 is rotated at the center against the force of the coil spring 23, and the warp yarn Y is inserted between it and the gripping portion 19 and is held softly.

In this way, the warp yarn Y is sent out while sliding between the gripping portions 19 and 20 while being sequentially guided in the axial direction l of the front bottom roller 1 according to its rotation locus l and moving laterally.

Thus, the warp yarns Y are joined to the fleece Y'l which is being sucked by the pneumatic clearer.

A thread splicing operation is performed. In this way, the present invention is configured to gently grip the warp threads during yarn splicing and allow them to slip through while actively moving the warp threads more than 1 inch laterally over the traverse width of the fleece to steadily send out the warp threads. Regardless of the traverse width of the fleece, splicing can be performed reliably, and simply by pressing the front bottom roller against the front bottom roller, the warp can be pulled out, the end of the spliced yarn can be joined, the warp can be moved laterally, The braking of the warp threads, the twisting of the fleece, etc. proceed sequentially, and the timing of the thread splicing operation, etc.
There is no need to worry about this, and the remarkable effect is that the seams are in good condition.

[Brief explanation of drawings]

FIG. 1 is a side view of a conventional yarn splicing device. Figures 2 to 4 relate to the present invention, Figure 2 is a partially cutaway side view of the yarn splicing device, Figure 3 is a plan view taken along line I-1 in Figure 2, and Figure 4 is a plan view thereof. It is. 5... Yarn splicing device, 7... Joining cradle, 8... Joining apron, 9... Stepped support shaft, 17° 18... ...Lever, 24...
···cam.

Claims (1)

[Scope of Claims] 1. A yarn splicing device in which warp threads pulled out from a pipe thread being wound or a preliminary pipe thread are held at the tip and moved so as to be joined to a fleece being spun. The device includes a main body and a joining cradle, and the joining cradle includes a joining apron or a joining cradle. A welding roller is attached, and the front end of a support shaft 9 is fixed to the rear central part of the welding cradle.The support shaft 9 is inserted into the main body via a spring, and the rear end of the support shaft 9 is attached to a support piece. On the other hand, the upper surface of the main body has gripping tools 19 and 20 at its tip.
It has. The bars 17 and 18 are urged to rotate clockwise or counterclockwise and are pivotally supported on the support shaft 16, so that when the joining apron or the joining roller comes into contact with the front bottom roller, the joining cradle is rotated. A push rod provided at the rear end rotates the lever 18 counterclockwise or clockwise to release the gripper 19.
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