JPS60134032A - Apparatus for processing tail residual yarn in spinning machine - Google Patents

Abstract

PURPOSE:To process tail residual yarns with certainty during the operation of a machine frame, by moving a blade body of a cutter device, driven with compressed air as a driving source and provided on a doffing bar of an auto-doffer between the working position and a nonworking position. CONSTITUTION:An apparatus for processing tail residual yarns capable of holding a blade body 29 of a cutter device 26 at a position corresponding to a groove part 34 formed between a tail yarn winding part 4 and a regulation part 3 of a cutter body 5 at the point of time when a wound yarn is moved to the upper part of a bobbin (B), supplying compressed air from a connection part to move a piston 28 to the side of a spindle 6, protruding the blade body 29 to the working position of a crossover yarn 15 in the groove part 34, making the cut tail yarn fly and processing the tail yarn with a suction cleaner.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a tail yarn residual yarn processing device for a spinning machine such as a ring spinning machine or a ring twisting machine, in which a tail yarn winding section is provided at the lower part of the spindle.

Conventional spinning machines such as ring spinning machines and ring twisting machines automatically change the tube when the tube is full, so thread can be automatically wound around the empty bobbin when restarting after changing the tube. It is required that the thread connected to the roller part be connected to the spindle while passing through the traveler. In order to meet this requirement, conventionally, as shown in FIG. A cutter holder 5 consisting of 4 and 4 was fitted into the lower part of the spindle 6.

After the full tube is filled, the ring rail 7 is suddenly lowered, and the yarn is wound several times around the end bobbin winding section 4 after performing the slant winding. The thread connected to the thread was cut by being pressed against the cutting blade 1 under tension.

In order to reliably automatically wind the thread onto the empty bobbin, it is necessary to ensure that the tail thread wound around the tail thread winding portion 4 of the spindle 6 does not move easily. If the tail thread moves with a slight force in the tail thread winding section 4, the tail thread will become loose when the ring rail 7 rises to the bobbin thread winding start position, and the posture of the traveler 8 will collapse. Thread breakage tends to occur at the start of operation. The biggest reason for preventing such secure winding of the tail thread is the presence of the remaining thread of the tail thread wound around the tail thread winding part 4. That is, the tail thread winding part 4 of the spindle 6 is knurled on the surface to make it difficult for the tail thread to move, and the thread C connected from the bobbin B to the tail thread winding part 4 is then doffed 1. Since it will not be cut until the time of work F, we decided to wind a new tail thread on top of the remaining thread on the doffing (a). When the tail thread is wound 11, the effect of securing the position of the tail thread 4u by the knurling has already disappeared, and a slight external force causes the tail thread 'b (111j) to be moved and loosened. In addition to reducing the fluctuation regulation effect on the knurling surface, it also has the inconvenience that the end of the remaining tail yarn gets entangled with the winding yarn when the machine is restarted, causing yarn breakage or causing fuzz. be.

Conventionally, in order to eliminate the above-mentioned inconvenience, when the machine is stopped, the remaining tail threads are manually removed using a cutter on a regular basis.
Publication No. 07025 [The device described in this article is equipped with a cutting blade that cuts the yarn connected to the pipe thread from the tail thread winding part, and a brush that can come into contact with the tail thread winding part, and is used in a machine using a tail thread remaining thread processing device. It has been proposed to manually dispose of the remaining threads while the machine is in operation.

However, it is time-consuming to process it manually.

Also, as an automatic processing device, US Patent No. 42088
No. 65 is equipped with a cutter 12 in which a leg portion 11 is loosely fitted into a hole 1O formed in a spindle rail 9, as shown in FIG. When passing, the cutter 12 rotates around the leg 11 by the airflow blown out, and the tip of the cutter 12 reaches the position where the jumper thread 15 is connected to the tail winding thread 14 and the bobbin B, and the rotation of the spindle 6 removes the jumper thread 15. 15 is disclosed. In this case, the amount of rotation of the cutter 12 is affected by the wind speed of the plow cleaner 13. If the wind speed is strong and the tip of the cutter 12 comes into contact with the spindle 6, sparks may be generated, which is dangerous; In this case, the tip of the cutter 12 cannot reach the crossing thread 15 and the purpose cannot be achieved. Furthermore, since the cutter 12 is driven by poles, it becomes difficult to drive as soon as fluff accumulates, so it is necessary to keep the area around the cutter 12 clean at all times. If lint or fine dust is attached to the oil, it will not be removed by the airflow from the blow creep 3, so the lint and dust will easily accumulate, making it difficult to drive the cutter 12. Furthermore, since the plow cleaner 13 is activated at the same time as the start of the machine operation, the crossover yarn 15 is cut at the beginning of the winding of the yarn at the lower part of the bobbin B.
There is also the disadvantage that the yarn scattered from the tail thread winding section 4 becomes entangled with the winding yarn, causing yarn breakage and fuzz.

Purpose This invention was made in order to solve the above-mentioned conventional problems, and the purpose is to make the structure of the device simple, easy to assemble, and easy to maintain by using the existing auto transfer device. To provide a tail yarn residual yarn processing device for a spinning machine, which can reliably process the tail yarn residual yarn during a stand handling operation.

Structure of the Invention In order to achieve the above-mentioned object, in the present invention, a dotting bar of an autodoffer is provided with a blade body formed between a tail winding portion formed at the lower part of the spindle and a bobbin winding start position using compressed air as a driving source. A cutter device is provided which is movable and placed between an active position where it contacts the jump thread and a non-work position where it cannot touch the jump thread.

Example 1 A first example embodying the present invention will be described below with reference to FIGS. 3 to 5. As shown in FIG.
Dotting bar 18 equipped with 7 (partially shown)
is supported by the upper part of the pantograph mechanism 20 via the bragut 19, and by the action of the pantograph ILQ JM 20, it is moved up and down between the 6 rows of spindles and the conveyor 22 (a number of conveyors 21 stretched over the lower part). ing.

Further, the sliding bracket 24, to which one end of the link 23 constituting a part of the pantograph mechanism 20 is connected and rotatably supported at a predetermined position, is rotated by the action of a cylinder (not shown), and the dotting bar 18 is moved to the spindle. 6 rows and the conveyor 22 and move away from each other.

As shown in FIGS. 4 and 5, a cutter device 26 is fixed to the upper part of the bobbin gripping device 17, respectively. As shown in FIG. 5, the cutter device 26 has a blade 29 horizontally attached to the tip of a stone rod 28a by an air cylinder 27ζ fixed in a direction orthogonal to the spindle rail 9. The piston 28 is biased in the retraction direction. Each air cylinder 2
7 are communicated with each other by a connecting pipe 31, and
Compressed air is supplied from a connection 32 disposed at one end of the dotting bar 18 and connected via suitable control connections to a source of compressed air (not shown), such as a compressor. On the spindle rail 9, a plurality of regulating rods 33 are provided at appropriate intervals toward the dotting bar 18 for positioning the cutter device 26 during operation, and protrude from each of the 17 bobbin gripping devices. .

Next, the operation of the apparatus configured as described above will be explained.

During normal winding operation, the dotting bar 18 of the auto doffer 16 is held in a retracted position below the spindle rail 9, as shown by the chain line in FIG. Ru. During doffing work associated with full tubes, the doffing bar 18 moves up and down and back and forth under the action of the pantograph 1 and 20 to grip and release the full yarn and empty bobbin, but the cutter device 26 does not grip the bobbin. Since it is placed above the device 17, it does not interfere with the doffing operation in any way. After the doffing operation is completed, the doffing bar 18 is retracted below the spindle 1 knoll 9, the spinning machine is restarted, and winding of the spun yarn is started. When the winding has progressed to a certain extent (3 minutes) and the winding thread connected from the tube thread to the Snell Wie-7 via the traveler has moved to the upper part of the bobbin, the auto doffer 16 is activated.

As a result, the dotting bar 18 first moves from the lower position of the spindle rail 9 to the outside of the machine frame, and then the cutter device 26 moves upward to a predetermined position that almost corresponds to the end bobbin winding part 4 to the 19 spindle rail 9 side. It is rotated and stopped and held at a position where it abuts the tip of the regulating rod 33, as shown in FIG. As a result, the blade body 29 of the cutter device 26 comes into a state corresponding to the groove portion 34 formed between the tail winding portion 4 and the regulating portion 3 of the cutter body 5. In this state, the connection part 32
Compressed air is supplied from the piston 28 to move toward the spindle 6 against the force of the spring 3O, and the blade 29 comes into contact with the crossover thread 15 in the groove 34 as shown by the chain line in FIG. protrude into position.

Since the crossover thread 15 is rotating at high speed together with the spindle 6, it is reliably cut by contacting the blade 29 protruding into the groove 34, and the cut end thread is scattered by the rotation of the spindle 6. The cutter device 26 is controlled by the regulating rod 33.
Since the distance between the blade 29 and the spindle 6 is maintained at a predetermined value, there is no possibility that the tip of the blade 29 will come into contact with the cutter body 5 when the blade 29 protrudes. If the crossover thread 15 is cut immediately after restarting the machine, the thread is wound at the bottom of the bobbin, so the scattered tail threads may become entangled with the winding thread and cause thread breakage or fuzz. However, by cutting the crossover thread 15 while winding is being carried out above the bobbin B, such inconveniences can be eliminated. , when the compressed air is exhausted after cutting the crossover thread 15, the piston 28 and the spring 300
The blade body 29 returns to its original position due to the force and the air cylinder 2
It is pulled into 7. Thereafter, the auto doffer 16 is operated again, and the doffing bar 18 is placed and held at a position 3g below the spindle rail 9. In addition, since the tip of the blade body 29 is formed in an arc shape, the cutting edge of the blade body 29 that protrudes into the groove 34 even when the rotation direction of the spindle 6 is changed due to a change in S twist and Z twist. Cross thread 15
will make sure that they make contact and cut. In addition, the scattered remaining tail threads can be easily disposed of by ordinary cleaning means, such as a suction cleaner.

Embodiment 2 Next, a second embodiment of the present invention will be described with reference to FIG. In the device of this embodiment, the blade 2 of the cutter device 26 is
9 is operated via a diaphragm 35, and compressed air is supplied to each cutter device 26 via a bobbin gripping device U17, which differs greatly from the device of the previous embodiment. The cutter device H26 has a blade at its tip inside a guide frame 4o in which a communication hole 37 communicating with the air passage 36 of the bobbin gripping device 17 and a housing portion 39 that accommodates the movable member 38 and guides its forward and backward movement are formed. The movable member 38 to which the body 29 is fixed is accommodated in a state where it is urged in the retracting direction by a spring 41, and the diaphragm 35 is fixed in a state in contact with the pressure receiving portion 38a of the movable member 38. . Furthermore, since the amount of movement of the movable member 38 by the diaphragm 35 is small, the blade body 29 is moved by the guide frame 4o.
A cover 42 made of an elastic member is fixed to the tip of the guide frame 40 and is fixed in an outwardly protruding state and covers the upper part of the protruding blade body 29 . 'Then, when the cutter device 26 is operated, the air passage 36 of the bobbin gripping device 17 is
The pressure of the compressed air is applied to the diaphragm 3 through the communication hole 37.
5, the movable member 38 is pushed against the force of the spring 41. As a result, the blade 29 pushes aside the cover 42 and protrudes into the groove 34, allowing the crossing thread 15 to be cut.
I can sleep. As the compressed air is exhausted, the force of the spring 41 moves the blade body 29 together with the movable member 38 to its original position.
JJ will be reinstated. Since compressed air is supplied to the cutter device 26 through the air passage 36 of the bobbin gripping device 17, a new connection pipe 31 connecting the cutter device 26 and a connection part communicating with the compressed air source must be purchased separately. There's no need.

Note that the present invention is not limited to the above-mentioned embodiments. For example, as shown in FIG. The bracket 43 to which the blade body 29 is fixed is fixed, and one air cylinder 27 can be used to process the remaining yarn of two or more spindles 6, or as shown in FIG. The bracket 43 to which the blade body 29 is fixed at the corresponding position may be configured to be operated by two air cylinders 27. This J
In the case of this configuration, the number of air cylinders can be extremely reduced compared to the first embodiment, and manufacturing costs can be reduced.

Further, as shown in FIG. 9, instead of the configuration in which the blade body 29 moves back and forth, it may be configured to rotate in conjunction with the movement of the piston 28. Furthermore, the regulating rod 33 may be attached to the dotting bar 18 side so that it comes into contact with the spindle rail 9.

Effects As detailed above, according to the present invention, the simple IN1 configuration makes it easy to assemble and maintain the device, and there is no possibility of thread breakage due to the tail thread after cutting getting entangled with the thread being wound during machine operation. It is possible to reliably cut the crossover yarn without causing fuzz, and furthermore, the remaining yarn processing device can be placed in a position where fluff is not likely to accumulate, which is a unique effect.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing the operation of a conventional tail thread cutting device, Fig. 2 is a side view showing the conventional device, and Figs. 3 to 5 show a first embodiment of the present invention in four units. Fig. 3 is a front view of the autodoffer, Fig. 4 is a front view showing the installed state of the cutter device, Fig. 5 is a longitudinal sectional view, and Fig. 6 is a longitudinal sectional view showing the second embodiment. 7 and 8 are plan views showing a modified example, and FIG. 9 is a t SU sectional view showing another modified example. Tail winding unit 4, spindle 6, spindle rail 9, crossover thread 15, autodoffer 16, bobbin entertainment device 17, doffing bar 18, cutter device 26, air cylinder 2
7. Blade body 29, regulating rod 33, diaphragm 35° Patent applicant Toyo 11 Automatic Loom Manufacturing Co., Ltd. Representative Patent attorney On 1) Hironobu Figure 2

Claims (1)

[Scope of Claims] 1. In a spinning machine such as a ring spinning machine or a ring twisting machine, which is equipped with an autodoffer that performs doffing on all spindles simultaneously and is provided with a tail winding section at the bottom of the spindle, the doffing of the autodoffer is provided. Using compressed air as a driving source for the bar, the blade has an active position in which it contacts the crossover thread formed between the end winding section and the bobbin winding start position, and a non-operational position in which it cannot contact the crossover thread.8! 1lii! 1. A device for processing leftover tail yarn that is pulled into a spinning machine, characterized in that it is equipped with a cutter device that can be placed on a spinning machine. 2. The cutter device is comprised of an air cylinder disposed above the bobbin gripping device of the autodoffer in correspondence with each spindle, and a blade horizontally fixed to the tip of the piston rod of the air cylinder. Claim 1
2. A tail yarn remaining yarn processing device in a spinning machine as described in 2. 3. The cutter device includes a guide frame disposed above the bobbin gripping device of the auto-doffer in correspondence with each spindle, and a movable cutter device that is movable within the guide frame so as to be movable back and forth and operated via a diaphragm. A tail yarn remaining yarn processing device for a spinning machine J3 according to claim 1, comprising a blade fixed to a tip of a member. 4. The tail yarn remaining yarn processing device according to claim 3, wherein the cutter device is connected to the bobbin gripping device through a communication hole.