JPH054453B2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a spindle residual yarn processing device for a spinning machine such as a ring spinning machine or a ring twisting machine, in which a tail winding section is provided at the bottom of the spindle. .

(Prior art) In spinning machines such as ring spinning machines and ring twisting machines, the tube change is automatically performed when the yarn is full, so yarn can be automatically wound around the empty bobbin when restarted after the tube change. As such, 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 demand, conventionally,
As shown in FIG. 9, it has a cutting blade 1 and a groove 2 around it.
A cutter body 5 is fitted to the lower part of the spindle 6. The cutter body 5 is made up of a regulating part 3 formed with a groove and a tail winding part 4 having a knurling formed on the circumferential surface immediately below the regulating part 3. After the full winding, the ring rail 7 is suddenly lowered to perform slant winding, and then the thread is wound around the tail winding part 4 several times, and when the full winding thread is pulled out, the full winding thread is passed from the tail winding part 4 through the groove part 2. The thread connected to thread 8 was cut by being pressed against the cutting blade 1 under tension.

In such a device, in order to reliably automatically wind thread onto an empty bobbin, it is necessary to securely wind the thread wound around the tail thread winding portion 4 of the spindle 6 so that it does not easily move. Temporarily the butt thread winding part 4
If the tail thread moves with a slight force, the tail thread becomes loose when the ring rail 7 rises to start winding the bobbin, causing the traveler 9 to lose its posture and tend to break the thread at the start of operation. It is. The biggest cause of hindering such reliable 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, although the tail thread winding section 4 of the spindle 6 is knurled on the surface to make it difficult for the tail thread to move, the thread connected from the bobbin B to the tail thread winding section 4 is not cut until the next doffing operation. Therefore, each time the doffing is repeated, a new tail thread is wound on top of the remaining thread. If the tail thread is further wound on top of the previously wrapped tail thread remaining, the effect of securing the tail thread winding position by the knurling is no longer effective, and the tail thread moves with a slight external force and becomes loose. In addition, the remaining tail thread not only reduces the fluctuation regulating effect on the knurling surface, but also causes the end of the remaining tail thread to become entangled with the winding thread when the machine is restarted, causing thread breakage and the generation of fuzz. There is also the inconvenience of being the cause.

Conventionally, in order to eliminate the above-mentioned inconvenience, the remaining tail threads were manually removed using a cutter at regular intervals when the machine was stopped. A tail thread residual thread processing device equipped with a cutting blade that cuts the thread 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, such as the device described in the official gazette, or October 29, 1981 Opening to the public in 1977-
This can be done manually during operation of the machine by using a tail yarn residual yarn processing device, etc., which is equipped with a cutting blade that cuts the yarn connected to the tube yarn from the tail yarn winding section, and a suction device, such as the device described in Japanese Patent No. 172076. It has been proposed to treat the remaining threads. However, there is a problem in that it is time-consuming to perform the process manually, which hinders machine automation. Further, as an automatic processing device, U.S. Pat. It is in the retracted position due to its own weight, and when the blow cleaner passes, the airflow blown out from the blow pipe 14 rotates around the leg portion 12, and the tip of the cutter 13 connects with the tail winding thread 15 and the bobbin B. Crossing thread 1
6 is present, and the crossover thread 16 is cut by rotation of the spindle 6.

In this case, the amount of rotation of the cutter 13 is
If the wind speed is strong and the tip of the cutter 13 comes into contact with the spindle 6, it may cause sparks, which is dangerous, while if the wind speed is weak, the tip of the cutter 13 may not reach the crossover thread 16. You will not be able to achieve your goal. Furthermore, since the blow cleaner starts running at the same time as the machine starts operating, the crossover thread 16 is cut when the thread is wound at the lower part of the bobbin B, and the thread scattered from the tail thread winding section 4 is unwound. There is also the inconvenience that the thread gets tangled with the take-up thread, causing thread breakage and fuzz.

(Problems to be Solved by the Invention) This invention solves the troublesomeness of manually operating a residual yarn processing device, the scattering of cut residual yarn in conventional automatic processing devices, and the problem of spun yarn caused by the scattered yarn. This solves the problem of breakage.

Structure of the Invention (Means for Solving the Problems) As a means for solving the above-mentioned problems, the present invention provides a cleaning pipe that hangs down from the side of the machine base, and a cleaning pipe that extends over a rail constructed along the machine base. A guide arranged along a spindle row in a spinning machine such as a ring spinning machine or a ring twisting machine, which is equipped with a running cleaning body and has a tail winding section at the bottom of each spindle arranged in a straight line. A cutting blade is attached to the main body, which is provided so as to be able to run along the rail, at a position where it can come into contact with the crossover thread formed between the end winding part and the winding start position of the pipe thread when the main body runs. The residual yarn cutting device is provided with an engaging portion, and a rigid engaging rod capable of engaging with the engaging portion of the residual yarn cutting device is suspended from the cleaning body during predetermined residual yarn processing.

(Function) In this invention, when the tail thread wound around the tail thread winding part of the spindle is cut and scattered, the ring rail is set at a time when the scattered thread has little effect on the thread being wound. While rising to a predetermined height, the remaining yarn cutting device waits at one end of a guide rail arranged along the spindle row, and only the cleaning body reciprocates along the spinning machine table. Then, when the ring rail has risen to a predetermined position and it is time to process the remaining yarn, the engagement rod installed in the cleaning body can engage with the engagement part of the residual yarn cutting device. The residual yarn cutting device travels along the guide rail together with the cleaning body in a state in which the engaging portion of the residual yarn cutting device is engaged. As a result, the cutting blade of the remaining yarn cutting device comes into contact with the crossover yarn, cutting the crossover yarn, and the tail yarn wound around the tail yarn winding section is unwound and scattered as the spindle rotates, and the scattered yarn is is immediately removed from the vicinity of the spindle under the action of the cleaning body that runs together as one. When the crossover yarn is cut by the residual yarn cutting device, the ring rail is located above the position corresponding to the end yarn winding section, so the scattered yarn can be removed without adversely affecting the winding of the spun yarn. be done.

Also, assuming a device that engages a cleaning pipe and a residual thread cutting device, and comparing it with the present invention, the cleaning pipe is generally swingable so that there is no danger even if it hits a worker. As the cleaning pipe swings, the remaining thread cutting device may move irregularly, or the cleaning pipe may disengage from the remaining thread cutting device, resulting in insufficient rigidity. running is unstable. In contrast, in the present invention, the cleaning body and the remaining thread cutting device are engaged through a rigid engagement rod, so that the cleaning body and the remaining thread cutting device move reliably as one and dispose of the remaining thread. It can be done reliably.

(Embodiment) Next, an embodiment in which the present invention is applied to a ring spinning machine equipped with an automatic tube changer for changing tubes at the same time will be described with reference to FIGS. 1 to 8. On the front side of the spindle rail 10, there is a mounting rail 18 on which an intermediate peg 17 is attached in correspondence with each spindle 6, for temporarily mounting a full thread or an empty bobbin in one step of the operation of the automatic tube changer. It is arranged along the rail 10. In the device of this embodiment, the mounting rail 18 serves as a guide rail for the residual thread cutting device 19. The remaining yarn cutting device 19 has a plurality of intermediate pegs 1
The flange 17a of the intermediate peg 17 while holding the
A cross-sectional main body 20 that can be contacted simultaneously on the top, a leg 22 that is fixed in a suspended state on the outside of the main body and is equipped with a roller 21 that comes into contact with the spindle rail 10 at its lower end, and a leg 22 that is attached to the top surface of the main body 20. It consists of a fixed cutting blade 23, and an engagement pin 24 as an engagement portion is provided protruding from the upper part. As shown in FIG. 6, the cutter body 5 fitted and fixed to the lower part of the spindle 6 has two regulating portions 3 formed therein.
The cutting blade 23 is installed so as to be located between the two regulating portions 3 when the remaining yarn cutting device 19 is in operation. The cutting blade 23 is formed into a saw blade shape that can easily receive and capture the crossover thread 16.

At one end of the mounting rail 18 on the out-end OE side, there is a rotating shaft 26 on which a plurality of engagement convex portions 25 having the same shape as the intermediate peg 17 protrude, in order to place the remaining thread cutting device 19 thereon. It is rotatably supported on the same axis. A bracket 27 projects from one end of the rotation shaft 26, and the bracket 27 is rotatably connected to the tip of a piston rod 29 of a cylinder 28 mounted on the spindle rail 10. Further, above the rotating shaft 26, there is a metal piece 30 attached to the cutting device 19 as a detection means for detecting whether or not the remaining thread cutting device 19 is placed on the rotating shaft 26. A proximity switch PS1, which is operated in the same manner, is disposed at a predetermined position. The cylinder 28 is turned on when the ring rail rises to a predetermined position by the action of a cam 31 that reciprocates in conjunction with a lifting chain (not shown) of the ring rail provided in the gear end GE.
The engagement pin 24 of the residual thread cutting device 19 placed on the rotating shaft 26 is operated via a solenoid operated by the limit switch LS, which is in the state It is configured to rotate between an operating position where it can engage with the engagement lever 62 and a standby position where it cannot engage. A stopper 34 for preventing movement of the remaining thread cutting device 19 is fixed to the end of the rotating shaft 26. Further, an engaging protrusion 35 having the same shape as the intermediate peg 17 is protruded from the other end of the mounting rail 18, and a guide member 37 having a stopper 36 fixed to the end thereof is fixed coaxially with the mounting rail 18. has been done.

A traveling rail 39 is installed above the spinning machine table 38 along its longitudinal direction, and a cleaning body 32 is mounted on the traveling rail 39 so as to be able to reciprocate. A blow pipe 40, a suction pipe 41, and a rigid engagement rod 61 are suspended from the left and right sides of the cleaning body 32, respectively, and the pipes 40, 41 swing around the engagement portions 40a, 41a with the main body of the cleaning body 32. It is now possible to move. The suction pipe 41 has a floor suction pipe 42 whose suction port is provided near the floor surface, and a residual thread suction pipe 43 whose suction port 43a is provided at a position corresponding to the tail thread winding portion of the cutter body 5. The suction system is branched into two systems, and the suction system is switched by a damper 44. As shown in FIG. 4, the damper 44 has one end of a pivot shaft 46 to which a partition plate 45 is attached, which protrudes outside the suction pipe 41 and is bent into a crank shape. Machine stand 3
A cylinder 48 is disposed at a predetermined position above the outer end OE side of the cylinder 8, which is operated by a solenoid valve, and in which the piston rod 47 engages with the end of the pivot shaft 46 when the piston rod 47 is projected. Also, the out-end OE of machine 38
A proximity switch PS2 serving as a detection switch for detecting that the cleaning body 32 is at the outer end position is disposed on the upper side.

An engagement lever 62 is rotatably supported on the engagement rod 61 at a position corresponding to the upper part of the remaining thread cutting device 19, and the engagement lever 62 is rotated when the remaining thread cutting device 19 is placed in the operating position. The engagement pin 24 can be engaged with the engagement pin 24 at the same time. On both upper and lower sides of the engagement lever 62, one end is connected to the engagement rod 61 and the other end is connected to the engagement lever 62.
A pair of springs 51 are wound around each of the springs 51, and an engagement lever 62 extends in a direction perpendicular to the engagement pin 24 and is supported so as to be retractable when an overload is applied.

Next, the operation of the apparatus configured as described above will be explained. Simultaneously with the start of machine operation, the cleaning body 32 starts reciprocating along the running rail 39 to the end of the machine base 38. At this time, the cylinder 48 is held in a state where the piston rod 47 is retracted, and the damper 4
4 is held at a position where the suction system of the suction pipe 41 is on the floor surface suction pipe 42 side. Therefore,
The cleaning body 32 cleans the machine base with the air flow blown out from the blowing pipe 40 and moves back and forth while sucking and removing fluff, dust, etc. from the floor suction pipe 42. On the other hand, the remaining yarn cutting device 19
Since the cleaning body 32 is placed on the top and rotated to the standby position shown by the chain line in FIG. Since the mating lever 62 is not engaged, the remaining yarn cutting device 19 is held at the standby position, and only the cleaning body 32 moves back and forth.

After a predetermined period of time has elapsed since the start of winding, the ring rail 7 has been raised to a position where winding is not adversely affected even if the end winding thread 15 is unwound from the end winding section 4 and scattered by cutting the crossover thread 16. At this point, the cam 31 provided in the gear end GE engages with the limit switch LS, and the limit switch LS is activated.
Set to ON state. Since the ring rail 7 is designed to gradually rise while making a vertical swinging motion, the limit switch LS, which is turned on by engagement with the cam 31, generates a pulsed ON signal as shown in Fig. 8. is emitted, so the signal is held by a relay that is energized by the first ON signal and maintains the ON state. When the remaining thread cutting device 19 is placed on the rotating shaft 26, that is, the proximity switch PS1 is in the ON state, and an ON signal is issued by the limit switch LS, the solenoid that holds the piston rod 29 of the cylinder 28 in the protruding state is energized. The timer starts counting at the same time. When the solenoid is energized, the piston rod 29 protrudes and the rotation shaft 26 is rotated clockwise in FIG.
0 corresponds to the intermediate peg 17 of the mounting rail 18 and the roller 21 provided on the leg 22 is arranged in an operating position in which it abuts against the spindle rail 10.

On the other hand, if the proximity switch PS2 generates a detection signal for the cleaning body 32 while the limit switch LS is generating an ON signal, the out-end
A solenoid for holding the piston rod 47 of the cylinder 48 disposed above the OE in the protruding state is energized, the cylinder 48 is actuated, and the piston rod 47 is held in the protruding state. When the cleaning body 32 passes through a position corresponding to the cylinder 48 in this state, the protruding end of the rotation support shaft 46 of the damper 44 engages with the piston rod 47 and the rotation support shaft 46 engages with the piston rod 47.
is rotated, and the partition plate 45 is rotated to a position where the suction system of the suction pipe 41 is switched to the residual yarn suction pipe 43 side. As a result, the suction pipe 41 that had been suctioning the floor surface is replaced by the residual thread suction pipe 43.
A suction action is performed from the suction port 43a. When the cleaning body 32 travels to the standby position of the remaining thread cutting device 19, the engagement lever 62 provided on the engagement rod 61 engages with the engagement pin 24 of the remaining thread cutting device 19, and thereafter the cleaning body 32 At the same time, the remaining yarn cutting device 19 starts traveling along the mounting rail 18.
When the remaining thread cutting device 19 runs along the mounting rail 18, its cutting blade 23 passes between the two regulating parts 3 provided on the cutter body 5, so that the cutting blade 23 passes between the two regulating parts 3 provided on the cutter body 5.
To surely cut a crossover thread 16 connected to a pipe bobbin B from a thread bobbin B. When the crossover thread 16 is cut, the tail thread 15 wound around the tail thread winder 4 is unwound and scattered as the spindle 6 rotates, but is immediately removed from the suction port by the action of the remaining thread suction pipe 43. 43a
is removed by suction. Therefore, unlike the conventional device, there is no possibility that the scattered yarn becomes entangled with the yarn being wound and causes yarn breakage.

When the remaining thread cutting device 19 travels together with the cleaning body 32 to the end of the mounting rail 18 and moves above the guide member 37, the remaining thread cutting device 19 engages with the stopper 36 and cannot move from that position toward the gear end GE side. However, the cleaning body 32 is further removed from the gear end GE.
Although an overload is applied to the engagement lever 62 due to the movement toward the side, the engagement lever 62 rotates counterclockwise in FIG. 7 about the engagement rod 61 as the cleaning body 32 advances and engages. Move while avoiding pin 24. Then, after the engagement lever 62 and the engagement pin 24 are disengaged, the cleaning body 32 again starts traveling from the gear end GE side to the out end OE side, and the engagement lever 62 of the cleaning body 32 is left behind again. It engages with the engagement pin 24 of the thread cutting device 19 and travels in the opposite direction.

When the remaining yarn cutting device 19 engages with the stopper 34 again after traveling to the out-end OE side, only the cleaning body 32 reaches the out-end end with the engagement lever 62 avoiding the engagement pin 24 in the same manner as described above. Moving. When the cleaning body 32 moves to the outer end side, the piston rod 47 of the cylinder 48
is held in the protruded state, the pivot shaft 46 of the damper 44 engages with the piston rod 47, and the partition plate 45 allows the suction system of the suction pipe 41 to move from the residual yarn suction pipe 43 side to the floor surface suction side. However, when moving from the out end side to the gear end side again, the remaining yarn suction pipe 43 side is switched to a position where it performs the suction action in the same manner as described above. In the same manner, the remaining thread cutting device 19
After reciprocating with the cleaning body 32 two or three times, the timer expires when the cleaning body 32 waits on the rotating shaft 26. As a result, the piston rod 29 of the cylinder 28 is retracted, the rotation shaft 26 is rotated counterclockwise in FIG. 6, and the remaining thread cutting device 19 is rotated to the standby position. Further, due to the time-up of the timer, the solenoid of the cylinder 48 is also demagnetized and the piston rod 47 is retracted. piston rod 47
The pivot shaft 46 of the damper 44 is connected to the piston rod 4.
7 and the suction system of the suction pipe 41 is on the floor suction pipe 42 side, and then pulled in. The vehicle travels with only the surface suction pipe 42 side performing suction operation. Note that if the remaining thread cutting device 19 is located at a position corresponding to the spindle 6 when the ring rail 7 automatically lowers due to a full winding stop, the ring rail 7 and the remaining thread cutting device 19 will interfere, causing an inconvenience. For automatic descent, the proximity switch PS1 is activated when the descent command signal is ON.
The lowering is performed only when the presence of the remaining thread cutting device 19 is confirmed and the proximity switch PS2 confirms the presence of the cleaning body 32.

Note that the present invention is not limited to the above-mentioned embodiments, and for example, a cam may be attached to a lifting chain winding pulley well known in spinning machines and yarn twisting machines as a means for detecting that the ring rail 7 has been raised to a predetermined position. You can use this to activate the limit switch LS, or use a proximity switch instead of using the limit switch LS. Further, the cleaning body 32 may include only the blowing pipe 40 or the suction pipe 4.
There may be only 1. Even with this alone, the scattered threads are removed from the vicinity of the spindle. The damper 44 may not be provided on the suction pipe 41, and both suction pipes 42 and 43 may be used for constant suction, and the suction pipe 41 may not be divided into two systems: the floor surface suction pipe 42 and the residual thread suction pipe 43. It is also possible to use one suction pipe and provide a suction port for residual yarn suction, which is separate from the suction port for sucking the floor surface, at a height position corresponding to the tail thread winding section 4. Furthermore, as an engagement means between the remaining thread cutting device 19 and the cleaning body 32, instead of the engagement pin 24 and the engagement lever 62, the remaining thread cutting device 19 has an attracted part formed of a magnetic material such as iron. arranged,
An electromagnet may be provided on the engaging rod 61 side at a position corresponding to the attracted portion. In this case, the remaining thread cutting device 19 is rotated at one end of the mounting rail 18 between an operating position where it engages with the engagement rod 61 of the cleaning body 32 and a standby position where it does not engage. The remaining yarn cutting device 19 and the engagement rod 61 can be engaged or disengaged only by turning the electromagnet on and off without providing a shaft.

Effects of the Invention As described in detail above, according to the present invention, the remaining yarn cutting device engages with the engagement rod 61 provided on the cleaning body 32, thereby automatically moving along the spindle row as the cleaning body 32 travels. In addition, the operating timing of the remaining yarn cutting device is such that when the jump yarn is cut and the tail yarn is scattered from the tail yarn winding part due to rotation of the spindle, it will affect the spinning and winding. This is carried out in a short period of time, and the scattered yarn is immediately removed, so that it is possible to reliably prevent the inconvenience of the scattered yarn wrapping around the yarn being wound and causing yarn breakage.

Moreover, since the engaging rod 61 is rigid, the engaging rod 61
The cleaning body 32 and the remaining yarn processing device move reliably in an integrated manner via the cleaning body 32, and the remaining yarn can be reliably processed.

[Brief explanation of the drawing]

1 to 8 show an embodiment embodying the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a front view, FIG. 3 is a perspective view showing a rotating part, and FIG. is a perspective view showing the switching part of the damper, FIG. 5 is a sectional view of the main part showing the mounting state of the engagement lever, FIG. 6 is a side view showing the rotating state, and FIG. 7 is a schematic plan view of the main part showing the action. Fig. 8 is a time chart, Fig. 9 is a partially cutaway side view showing the action of the conventional tail thread cutting device, and Fig. 1 is a time chart.
FIG. 0 is a side view showing a conventional device. Tail thread winding section...4, Spindle...6, Mounting rail as a guide rail...18, Remaining thread cutting device...19, Cutting blade...23, Engagement pin...24,
Cleaning body...32, Engagement rod...61, Engagement lever...
...62.

Claims (1)

[Claims] 1. Equipped with a cleaning pipe hanging down from the side of the machine base, equipped with a cleaning body that runs on a rail built along the machine base, and equipped with a tail winding section at the bottom of each spindle arranged in a straight line. In a spinning machine such as a ring spinning machine or a ring twisting machine, when the main body runs along a guide rail arranged along the spindle row, the pipe yarn is removed from the tail winding section. An engaging portion is provided in a residual yarn cutting device having a cutting blade attached at a position where it can contact the crossover yarn formed between the bobbin winding start position, and the engaging portion of the residual yarn cutting device is provided during predetermined residual yarn processing. A spindle residual yarn processing device for a spinning machine, characterized in that a rigid engagement rod that can be engaged with the cleaning body is suspended from the cleaning body.