JPS59116427A - Method for lifting and lowering ring rail in stoppage of spinning machinery operation - Google Patents

Abstract

PURPOSE:To prevent the escape of the yarn from the traveller, and to facilitate the following operations in the stoppage of a spinning machinery, by lowering the ring rail to form a bunch, lifting the ring rail, and stopping the operation quickly. CONSTITUTION:In the case of stopping a spinning machinery when the bobbin 40 is filled with the wound yarn, the electrical supply to the motor driving the spindle 42 is stopped, the ring rail 43 is lowered to form a bunch wound yarn at the lower end of the bobbin 40, the fing rail is lifted while the spindle 42 is still in motion by its inertia, and the revolution of the spindle 42 is stopped quickly when the lifting of the rail 43 is completed. Since the yarn Y' extending from the traveller 44 to the bunch 41 presses the lower end of the running side of the traveller 44, and the yarn Y'' extending from the traveller 44 to the upper snail wire pushes up the upper end of the traveller 44 at the side opposite to the running side, the lower end of the traveller 44 at the opposite side is closely contacted with the ring 43a, and the escape of the yarn Y from the traveller 44 can be prevented even if the yarn Y is loosened to an extent.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for raising and lowering a ring rail when the frame of a spinning machine, such as a ring spinning machine or a ring twisting machine, is stopped for doffing on an automatic doffing machine.

Conventional technology in general (when an automatic doffing machine pulls out a tube yarn from the spindle of a spinning machine, a tight fit release device is used to release the tight fit between the bobbin and the spindle.
When the machine of a spinning machine is stopped, the ring rail is moved to the bottom punch winding position after forming the punch winding so that the tightening release device can enter between the lower end of the bobbin and the spindle after the machine stops. ) It may be necessary to raise it approximately 30 mm upward.

Conventionally, when the machine was stopped due to full pipes, the
, (B) controls the ring rail drive mechanism shown in FIGS. 2-3 to move the ring rail up and down. A shaper wheel 2, which is fed one tooth at a time by the swinging of a ring rail (not shown), is fixed to one end of a support shaft 1 of the drive mechanism, and a pawl 3 is provided to prevent reverse rotation of the shaper wheel 2. A worm 4, a clutch mechanism 5, and a clutch piece 6 are rotatably supported on the support shaft 1, and a gear 7 is fixed to the other end.

A clutch piece 8 is attached to one end of the worm 4 as shown in FIG.
A protruding shaft portion 9 rotatably supports the shaft portion 9, and a claw portion 9a is formed at the tip of the shaft portion 9. The claw portion 9a engages with a claw 5a that rotates together with the clutch mechanism 5. A gear 10 is integrally formed on one clutch piece 6, and the rotation of the gear 7 is transmitted to the gear 10 via gears 12 and 13 on a separate shaft 11. .

The other clutch piece No. 8 is integrally formed with a gear 14,
The gear 14 is always in mesh with a gear 16 of a gear mechanism 15 that transmits the drive from a main motor (not shown). is fixed, and the rotation of the swing motor M40 is transmitted to the toothed pulley 17 via a pair of gears, an electromagnetic clutch 18, a toothed pulley 19, and a timing belt 20.

Clutch lever 2 that changes the engagement of the clutch mechanism 5
1 is rotatably supported by a shaft 22 extending perpendicular to the support shaft 1, and is biased by a spring 23 to rotate in a direction in which the clutch mechanism 5 engages with one of the clutch pieces 6. -21 has a solenoid S at one end.
A locking protrusion 26 is provided to protrude when a bolt 25 that can be engaged with the QL plunger 24 is screwed.

A worm wheel/L' 28 that meshes with the worm 4 is provided in the middle part of the shaft 27 extending in the direction perpendicular to the support shaft 1.
At the same time, a pulley 30 for winding up the chain 29 connected to the ring rail is fixed at one end, and in conjunction with the rotation of the worm 4, the pulley 30 winds up and unwinds the chain 29. It looks like this. A cam 3 is provided on the shaft 27 for controlling a retaining lever 31 that engages with the locking protrusion 26 of the clutch lever 21.
2 is fixed. Further, at the other end of the shaft 27, there is a limit switch LS electrically connected to the solenoid SQL.
A cam 33 that operates 4 is fixedly attached.

During normal operation, the clutch mechanism is engaged with one clutch piece 6, and when the shaver wheel 2 rotates by a certain angle, seven gears rotate via the support shaft 1, and the gear 12 on the other shaft 11,
13 also rotates. When the gear 12 rotates, the gear 10 that meshes with it rotates, and the clutch mechanism 5 that meshes with the one clutch piece 6 that is integral with the gear 10 rotates. The rotation of the worm 4 is transmitted by the claw portion 9a engaged with the claw 5a which rotates integrally with the clutch mechanism 5.The rotation of the worm 4 is transmitted to the pulley 30 via the worm wheel 28 and the shaft 27. Chain 2 connected to ring rail
9 is gradually wound up, thereby forming a pipe yarn as the ring rail is raised and lowered by a heart cam (not shown).

Conventionally, when the tube is full (when this happens, the auto counter A of the 7th circuit
CH closes, then the limit switch LSI for ring rail lowering timing selection is pressed and its contact LSI closes.
The limit switch LS2 for stopping the main motor is pressed, and its contact LS2 in the ninth circuit (3) closes. When contact LS2 closes, the keep relay K in the 10th circuit
The normally closed contact KR26 of R26 opens and the relay CR26 is demagnetized, and the normally open contact CR26 in the sixth circuit 11 opens, the magnetic contactor MS11 is deenergized, the main motor becomes inert rotation, and the 1 circuit 1 (brake operation timing setting timer TR18 starts counting. Then, the lowering solenoid limit switch LS3 is pressed and its contact LS8 in the 11th circuit M closes, and the song rail lowering timing selection limit is set. Normally open contact CR3 of relay CR31 energized by the operation of switch LSI
1, solenoid SQL is activated, and plunger 24
rotates the clutch lever 21 against the spring 23, and the clutch mechanism 5 engages with the other clutch piece 8.

At this time, the locking protrusion 26 of the clutch lever 21 engages,
<-31? This engagement prevents the clutch lever 21 from returning due to the spring 23. When the clutch mechanism 5 engages with the other clutch piece 8, the rotation of the main motor M11 is transmitted to the worm 4 via the teeth, the east mechanism 15, the gear 14, the clutch piece 8, the clutch mechanism 5, the pawl 5a, and the pawl portion 9a. , reverse the pulley 28 and connect the chain 2.
9 will be rewound, so the ring rail will automatically lower.

When the ring rail descends to the bottom punch winding position, the limit switch LS4 is pressed, its contact LS4 in the 11th circuit M opens, and the solenoid SQL is deenergized, so the clutch lever 21 is rotated by the spring 23. The clutch mechanism 5 disengages from engagement with the other clutch piece 8 and engages with one clutch piece 6. In this case, the engagement between the locking protrusion 26 of the clutch lever 21 and the engagement lever 31 is released in advance by the action of the cam 32. When the clutch mechanism 5 disengages from the other clutch piece 8, the ring rail stops lowering, and a punch winding is formed at the position t. At the same time as the brake operation timing setting timer TR1B times up, the contact TR18 in the second circuit (2) closes, the electromagnetic brake MB19 operates, and the driving shaft brake engages, stopping the rotation of the spindle and completing punch winding. .

When the brake operation timing setting timer TR18 times up in the evening, the timer TR19 of the second circuit starts counting, and when the timer TR19 times up, its contact TR19 in the 12th circuit Xll closes and the relay CR33 is energized. And Jin is also self-preserved. This causes the 13th circuit X111 + normally open contact CR3
3 is closed, and the electromagnetic contactor MS40'F for lifting the ring rail of the swing motor M40 is energized. Then, the swing motor M'40 rotates normally, and the electromagnetic clutch 18, the toothed pulley 19, the timing belt 20, and the toothed pulley 1γ
The spindle 1 is rotated through the worm wheel 28 and the shaft 27, and the rotation is transmitted to the worm 4 as described above.The pulley 30 is rotated in the direction to wind up the chain 29 through the worm wheel 28 and the shaft 27, and the ring rail is raised. When the ring rail first rises to a predetermined position, the limit switch for detecting the completion of the rise is pressed, and its contact L in the 15th circuit
So1 is closed and relay CR45 is energized. As a result, the normally closed contact CR4 in the 13th circuit XI demagnetizes the electromagnetic contactor MS40F and stops the swing motor M40, thereby completing the stopping of the spinning frame.

In the conventional method, as shown in FIG. 4, a punch winding 41 is formed at the lower end of the tube bobbin 40, and the ring rail 43 is first raised after the rotation of the spindle 42 has stopped, so that the ring rail 43 is at the bottom. Traveler 4 from the Snell wire (not shown) as it rises from the punch winding position.
4 to the lower end of the tube bobbin 40, the thread Y may come off the traveler 44, or as shown in FIG. If the Y comes off, or the thread from the traveler 44 to the punch winding 41 gets caught on the slope part 46 of the pipe thread due to the rise of the ring rail 43, / a force that pulls the thread down to the traveler 44 acts, causing the thread to It may come off the traveler 44.

If the yarn Y comes off the traveler 44, it becomes impossible to wind the yarn when the spinning machine is restarted after doffing.

Purpose This invention was made to solve the above-mentioned conventional problems, and its purpose is to prevent the line from coming off the traveler due to the primary rise of the ring rail when the machine is stopped due to a full tube. To provide a method for raising and lowering a ring rail when a spinning machine is stopped, which can completely eliminate yarn breakage caused by this.

EXAMPLE An example embodying the present invention is shown in FIGS. 6(A) and (
This will be explained according to B'). The control circuit of this embodiment is the first
In the conventional control circuits shown in FIGS. (A) and (B), the timer TR19 of the second circuit (■) connected in parallel and column with the third circuit (■) is removed, and the timer TR19 is transferred to the 12th circuit (■).
This control circuit differs from the conventional control circuit in that it is connected in parallel to the series circuit of normally open contact TR19 and relay CR33.

Next, the operation of stopping the machine when the pipe is full will be explained. When the tube is full, the auto counter AC11 of the seventh circuit VI closes, then the limit switch LSI for ring rail lowering timing selection is pressed and its contact LS1 is closed, and the limit switch LS2 for stopping the main motor is pressed, and the ninth Its contact LS2 in circuit ■ is closed. When contact LS2 closes, normally closed contact KR26 of keep relay KR26 in the 10th circuit As a result, the main motor becomes inertial rotation, and the brake operation timing setting timer TR18 in the first circuit H starts counting. Next, the lowering solenoid limit switch L S 3 is pressed and the 11th limit switch L S 3 is pressed.
Its contact LS3 in circuit M closes and solenoid SQL
is activated, and the ring rail automatically lowers in the same manner as above.

When the ring rail descends to the bottom punch winding position, the limit switch LS4 is pressed, its contact LS4 in the 11th circuit A coil is formed. On the other hand, when the limit switch LS4 is pressed, its contact L S in the 12th circuit ■
4 is closed, and timer TR19 in the 12th circuit Xll'
starts counting. When the timer TR19 times out, the 11th circuit X1 contacts TIRt.
! When 1 is closed, relay CR33 is energized and held at 1. This closes the normally open contact CIRaa of the 11th circuit Start rising. Note that the spindle continues to rotate by inertia during this time.

When the ring rail first rises to a predetermined position, the limit switch LSol for detecting the completion of the rise is pressed, and its contact L Scl in the 11th circuit X1 closes, causing relay CR45 to close.
is energized, and its normally closed contact C in the 11th circuit
R4 is opened, the electromagnetic contactor MS40F is demagnetized, the swing motor M40 is stopped, and the lifting of the ring rail is completed.

Next, the brake operation timing setting timer TR18 times up, its normally open contact TR18 closes, the electromagnetic brakes MB and 19 operate, and the driving shaft counter brake is activated, causing the spindle rotation to suddenly stop and the spinning machine frame to stop. is completed. Brake operation timing setting timer TR
18, after the ring rail has stopped at the primary ascending position 11, the timer setting time is determined so that the timer is set so that the pipe thread (thread) is not wound for one turn at that position.

As mentioned above, the ring rail automatically lowers to the bottom punch winding position due to the full pipe stop, temporarily stops at that position to form punch winding, and then the spindle rises for the first time during inertia rotation, and the thread continues until the next rise is completed. As the winding continues, only slack is generated in the thread, and as shown in FIGS. 7 and 8 (as shown in FIGS. In other words, due to the rapid rise of the ring rail 43, the thread Y' connected in the diagonal direction presses against the lower end of the traveling side of the traveler 440, and the thread f connected to the null wire presses against the lower end of the traveling side of the traveler 44. Since the upper end can be pushed up, the lower end of the traveler 44 on the non-travel side comes into contact with the ring 43a (as shown in Fig. 8Q), which prevents the thread from coming off immediately even if the thread is loosened to some extent. .

Maintain this position even after stopping.

In short, due to the thread tension, snarl does not occur, and only thread slack and snarl (due to which the thread comes off from the traveler 44) occur.

Effects As detailed above, this invention automatically lowers the ring rail by the ring rail automatic lowering command after stopping power supply to the main motor that drives the spindle, and then lowers the ring rail automatically during the inertial rotation of the spindle (this ring rail is Since the spindle is suddenly stopped when the ring rail reaches the first ascending position, the thread from the nunel wire to the traveler to the lower end of the tube bobbin (sag or nunar may occur) Moreover, the posture of the traveler is maintained well, preventing the thread from coming off from the traveler, and completely preventing the thread from breaking when restarting the machine. It has a great effect.

[Brief explanation of drawings]

Figures 1 (A) and (B) are control circuit diagrams for carrying out the conventional method, Figure 2 is a horizontal perspective view of the ring rail driver, Figure 3 is its cross-sectional view, and Figure 4 is the ring rail driver. Fig. 5 is a partially cutaway side view showing a state in which the rail has descended to the bottom punch winding position to form punch winding, and Fig. 5 is a partially cutaway side view showing a state in which the ring rail has been raised to the first stage after the nubindle has stopped. , FIGS. 6A and 6B are control circuit diagrams for carrying out the method of the present invention, FIG. 7 is a perspective view showing the attitude of the traveler when stopped, and FIG. 8 is a sectional view. be. Swing motor 40M, solenoid SQL, brake operation timing setting timer TR1B, timer TR'19゜Patent applicant Toyota Industries Corporation Representative Patent attorney Hironobu Onda Figure 7 Figure 8

Claims (1)

[Claims] 1 After stopping power supply to the main motor that drives the spindle, the ring rail automatic lowering command automatically lowers the ring outer seal, forms a punch winding at the lower end of the bobbin, and then lowers the ring rail while the spindle is inertly rotating. A method for raising and lowering a ring rail when the frame of a spinning machine is stopped, characterized by first raising the ring rail and then suddenly stopping the spindle when the spindle reaches the second raising position.