JPH0627389B2 - Composite yarn spinning method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a spinning method of a composite yarn using a spinning fiber and a raw yarn or a synthetic fiber filament as materials, and more specifically, using both these materials. The present invention relates to a spinning method capable of extremely reducing the generation of defective yarns and wastes when producing a composite yarn by a spinning machine.

(Prior Art) In the spinning of a composite yarn made of a spinning fiber and a raw fiber or a synthetic fiber filament, when the composite yarn wound on a spindle is cut, a large amount of roving yarn supplied later rotates. There were various obstacles in each place.

In order to prevent such obstacles, a newer is devised, and the nozzle is used for suction. In fact, it is not easy for operators of machines to splice yarn indiscriminately on each weight arranged in a line immediately when it is difficult to secure human resources in recent years. Since the speed is increased, the splicing of yarn splicing leads to the generation of a large amount of waste, and there is a demand for a measure for suppressing the amount of roving waste that is sucked into the pneumatic nozzle by a certain method.

In order to satisfy such a demand, the present applicants, in a spinning machine provided with a roller draft area, detect the spun yarn by a sensor when the spun yarn is cut, and immediately stop the feeding of the supplied roving yarn. Tokusho Sho 63-
Proposed in Japanese Patent No. 46177.

(Problems to be Solved by the Invention) In the above-mentioned invention, when the spun yarn is made of a spinning fiber, approximately 10
Although the target of 0% can be achieved, when the spun yarn is the composite yarn as described above, a new problem is caused. That is, in the spinning of composite yarn, during spinning, a so-called one-sided cutting occurs in which only one of the fiber bundle for spinning or the compounded fiber filament is cut, in addition to the cutting of the obtained composite yarn itself. We see the occurrence of defective yarn for a long time.

The present invention not only cuts the provided sensor-sensed composite yarn itself, but also stops the supply of all constituent materials even in the so-called one-side cut state in which either the spinning fiber bundle or the raw yarn or the synthetic fiber filament is cut. However, it is an object of the present invention to provide a spinning method that can reduce the cost of raw materials by preventing the reduction of raw materials that become waste and the generation of defective yarn.

(Means for Solving Problems) The present invention has the following configuration in order to achieve the above object. That is, while supplying the roving yarn of the spinning fiber to the roller draft region of the spinning machine, the raw yarn or the synthetic fiber multifilament is supplied from a different route different from this, and the composite yarn of which both are joined by the front roller in the draft region. In the spinning method, the yarn break signal detected by the sensor is used to hold the roving thread between the back roller and the Shinano winding of the corresponding weight with the member provided on the machine base, and the roving thread that engages with the back roller and The gist of the present invention is to stop the traveling of the roving yarn by retracting it from the position outside the working area of the top back roller, and at the same time, cut and grasp the filament on another path.

The present invention will be specifically described below with reference to the embodiments shown in the drawings.

(Example) First, the structure of an apparatus for carrying out the method of the present invention will be described. In Fig. 1 of the explanatory view showing the arrangement position of the embodying device and Fig. 2 showing the perspective view of the main part of the embodying device, (1) is a shinomaki wound with silk roving, As is known, the roving (2) drawn out from the Shino winding (1) is a roving rod.
(3), a trumpet (36) (not shown in FIG. 1), a roller pair consisting of both a positively rotating back bottom roller (5) and a back top roller (4) that is driven to rotate by being pressed against it, positively rotating The middle bottom roller (6) and the upper and lower aprons (7) (8) are pressed against the middle bottom roller (9) and rotated by the middle top roller (9), and the positively rotating front bottom roller (11) and It sequentially passes through a pair of front top rollers (10) that are pressed into contact therewith and that are driven to rotate, and undergo a drafting action by each pair of rollers having different peripheral speeds, and are delivered from the front top rollers (10).

On the other hand, the polyester multifilament (13) unwound from the pan (12) passes through a guide washer (14), a top yarn guide (15) provided with a tension control mechanism and a cutting and gripping mechanism, and a bottom yarn guide (16). The yarn traveling position is regulated by, and while maintaining a constant distance from the roving yarn (2) of the belt-shaped fleece, it joins with this on the front bottom roller (11) and then twisted to form a composite yarn (17).

In the manufacturing process of the composite yarn (17) by the above-described known spinning machine, in the apparatus of the present embodiment, the known electrical and / or electrical on the yarn running path of the composite yarn (17) sent from the front bottom roller (11). Mechanical thread cutting sensor (18),
Preferably, a sensor described in Japanese Patent Publication No. 48-40572 is installed, and a roving yarn supply stopping mechanism which operates in response to a "thread breakage" signal generated by the sensor (18).
Install (19) between the back top roller (4) and Shino-maki (1),
It is configured to operate in response to the signal.

The details of the roving supply stop mechanism (19) installed for each weight will be described with reference to FIG. 2. In the figure, (24) is each weight extending along the longitudinal direction of the spinning machine. It is a common spindle A and is fixed to the machine base body. Reference numeral (20) is a nip lever that is vertically movable together with the frame body (30) on the support shaft A (24), and can be further moved left and right by a support shaft B (23) mounted on the frame body (30). Is supported by.

During normal operation without yarn breakage of the composite yarn (17), the tip of the nip lever (20) is located slightly to the left of the back top roller (4) of the target weight, and at that position, The nip lever (20) is provided via a spring A (26) fitted to the slide shaft (31) fixed to the machine base and a roving guide (25) slidably fitted to the slide shaft (31).
Is always defeated to the right. Then, the nip lever (20) is fitted into the fitting mechanism (not shown) of the fixed claw (27) which is rotatably supported by the bracket (32) fixed to the machine base, so that the spring A (26) applies the force. The force is locked, and the nip lever (20) is prevented from maintaining the normal position, that is, rightward movement.
The fixed claw (27) is supported by an elevating rod (28 ') of a solenoid (28) which communicates with a sensor (19), and the nip lever (20) is disengaged by raising the rod (28'), and the spring is used. A (2
6) Make the right move by the elastic force.

Next, the vertical position regulation of the nip lever (20) will be described. The nip lever (20) has one end fixed to the machine base, and the other end fixed to the lever (20) by a spring C (29) which is always biased in a direction in which the tip end thereof rises. (31) prevents rising and regulates the vertical position.

At the center of the nip lever (20), a roving yarn comprising a moving surface (34) of a moving piece (33) rotatably supported by a support shaft C (21) and a fixed surface (35) for fitting the moving surface (34). When the gripping mechanism is installed and the nip lever (20) is in the position without thread breakage shown in the figure, the moving surface (34) is separated from the fixed surface (35) by the elastic force of the spring B (22), An opening space is formed between them to form a thread passage, and when the nip lever (20) moves to the right as described above, the moving piece (33) rotates and both sides (34) and (35) come into close contact and rough. yarn
It is configured to grip (2).

An example of the roving yarn supply stopping mechanism (19) has the above-mentioned configuration, and its embodiment will be described below.

As described above, when the thread is not broken, that is, when the sensor (18) shown in FIG. 1 detects the presence of the thread, the nip lever (20) is at the position shown in FIG. The lever (20) is locked by the fixed claw (27) and the moving surface (34) is in the open position. The roving thread (2) acts as a smoothing action of the back top roller (4) through the trumpet (36), the moving surface (34) to the fixed surface (35), and the guide groove at the tip of the roving thread guide (25). It passes through the surface and is subjected to a regular drafting action by each draft roller pair as usual, and becomes a constituent material of the composite yarn (17).

When the composite yarn (17) breaks and the sensor (18) issues a yarn break signal, the solenoid (28) operates in response to this, and the lifting rod (28 ') is raised and supported by this. Fixed claw (2
Remove 7) from the nip lever (20). Along with this, the roving thread guide (25) and the nip lever (20) move to the right by the elastic force of the spring A (26), and the moving surface (34) and the fixed surface (35) come into close contact with each other and the roving thread (2). At the same time as gripping, move it to the position of the roving thread (2) (2 ') that engages with the tip guide groove of the roving thread guide (25), and insert it into the concave circumferential groove (4') of the back top roller (4). Let this fit loosely. The roving (2) is gripped by the moving surface (34) and the fixed surface (35) to stop traveling, and at the same time, released from the grip of the back roller pair and stopped to be fed to the roller draft area.

Upon re-spinning by the machine operator, the nip lever (20) is manually returned to the original position to release the grip of the roving thread (2) and the roving thread (2) of the roving thread guide (25). Returns to the working surface of the back top roller (4) and the re-feeding of roving is started.

At this time, the machine operator does not need to pass the roving thread through the tip guide groove of the trumpet (36) or the roving thread guide (25) at all, and re-spinning can be performed by a simple operation of returning the nip lever (20) to the original position. It is possible.

Spun fiber rovings (2) in case of breakage of the composite yarn (17)
The operation of stopping the supply of the above is carried out by the above-mentioned process. Next, the operation of stopping the supply of the raw silk or the synthetic fiber multifilament which is carried out at the same time as the above operation will be explained.

The above-mentioned top yarn guide (15) includes Japanese Patent Publication No. 48-87.
A known running yarn cutting and gripping mechanism (not shown) disclosed in Japanese Patent Publication No. 76 is built in, and the cutting and gripping mechanism is operated by a yarn breakage presence signal generated by a sensor (18) for detecting a thread trimming of the composite yarn. Then, at the same time as the supply of the roving yarn, the running of the raw yarn or the synthetic fiber multifilament is stopped.

To explain the prevention of defective yarns caused by one-sided breakage, one-sided breakages caused by roving breaks naturally cause interruption of spinning of the composite yarn, so it is practically necessary to attach a yarn cutting sensor for detecting only roving breaks. There is no above. Therefore, the thread cutting sensor for cutting on one side is provided only on the top yarn guide (15), and if the roving supply stop mechanism (19) is operated in response to the thread absence signal of the top guide (15), the object of the present invention is achieved. Can be achieved.

(Effects of the Invention) As in the above-described examples, the present invention provides all of the feed materials regardless of whether the roving yarn is cut off, the raw yarn or the synthetic fiber multifilament is cut off, and the spinning of the composite yarn itself is interrupted. This completely cuts off the supply of the composite yarn, and completely prevents the waste of the composite yarn spinning material or defective yarn from being described at the beginning. This is very effective when the spinning fiber is an expensive material such as a silk spinning material.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an arrangement position of an apparatus for carrying out the method of the present invention, and FIG. 2 is a perspective view showing a main part of the apparatus. (1) …… Shinomaki, (2) …… Rough thread (3) …… Roving rod (4) …… Back top roller (5) …… Back bot mroller (6) …… Middle bot mroller (7) …… Apron, (8) …… Apron (9) …… Middle top roller (10) …… Front top roller (11) …… Front bottom roller (12) …… Pan (13) …… Polyester multifilament (14) ) …… Guide washer (15) …… Top yarn guide (16) …… Bottom yarn guide (17) …… Composite yarn (18) …… Sensor for detecting thread trimming (19) …… Rough yarn supply stop mechanism, ( 20) Nip lever (21) ...... Support shaft C, (22) ...... Spring B (23) …… Support shaft B, (24) …… Support shaft A (25) …… Coarse thread guide, (26) ...... Spring A (27) …… Fixed claw, (28) …… Solenoid (28 ′) …… Elevating rod, (29) …… Spring C (30) …… Frame, (31) …… Slide shaft ( 32) …… Bra Tsu Doo, (33) ... moving piece (34) moving-surface, (35) ... fixing surface (36) .... Trumpet

Claims (1)

[Claims] 1. A roving yarn of a spinning fiber is supplied to a roller draft region of a spinning machine, and raw yarn or synthetic fiber multifilament is supplied from another route different from this, and the both are joined by a front roller in the draft region. In the spinning method of the composite yarn, the yarn break signal detected by the sensor is used to grasp the roving yarn between the back roller and the sino winding of the corresponding weight with a member provided on the machine base, and to detect the roving yarn that engages with the back roller. A method for spinning a composite yarn, characterized in that the roving yarn is stopped from running from the position during normal operation to stop the traveling of the roving yarn, and at the same time, the filament on another path is cut and grasped.