JPH0670293B2 - Cradle operation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a spinning machine in which a yarn winding cradle is swung to a predetermined position when a yarn splicing operation or a doffing operation is performed. The present invention relates to a fixed cradle operating device.

(Prior Art) Generally, when a yarn splicing operation or a doffing operation is performed in an open-end spinning machine, a binding spinning machine, or the like, a yarn splicing traveling on a rail installed along the machine longitudinal direction. Machine and doffing machine.

That is, when yarn breakage occurs, the cradle is fixed by the cradle operating device of the yarn splicing machine while being separated from the drive roller by a certain distance regardless of the winding diameter of the winding package, and spun from the yarn forming device. The yarn and the yarn pulled out from the package are respectively sucked and conveyed to a knotter to perform a yarn splicing operation.

On the other hand, when the winding package is full, the cradle operating device of the doffing machine pushes up the package to a preset doffing position and fixes the package for doffing operation.

However, as described above, in the case of performing the yarn splicing operation and the doffing operation by running a single processing machine along the machine base, there is a problem that the yarn splicing machine and the doffing machine interfere depending on the position of the processing weight. However, since two processing machines are used, the control device is complicated and the manufacturing cost is high.

Therefore, various yarn splicing doffing machines having both a splicing function and a doffing function have been developed.

(Problem to be Solved by the Invention) The present invention is a yarn splicing operation or a doffing operation by a yarn splicing beading machine having both the above-mentioned yarn splicing function and doffing function. An object of the present invention is to provide a cradle operating device that can be swung and fixed to a frying operation position.

(Means for Solving the Problems) In order to solve the above-mentioned problems, a cradle operating device of the present invention is configured such that a movable device swingably mounted on a machine frame is swung by a drive device to wind a yarn. In an operating device for swinging and fixing a taking cradle to a predetermined position, two fluid rotating cylinders and a brake are attached to a swinging fulcrum portion of the movable arm, and one of the fluid rotating cylinders is a fluid rotating cylinder. And a fluid supply control means for low torque, and a fluid supply control means for high torque are connected to the other fluid rotating cylinder.

(Example) The structure of the cradle operating device of the present invention will be described based on the drawings.

Reference numeral 1 denotes a frame body to which a yarn splicing mechanism and a doffing mechanism (not shown) are mounted. The frame body travels on rails installed along the longitudinal direction of the spinning machine and serves as a processing unit of each winding device. It is designed to stop at the opposite position. Reference numeral 2 is a first fluid rotating cylinder attached to the frame body 1 by a bracket 3, and when the pressure fluid is supplied, the output shaft is rotated with a predetermined torque. Reference numeral 4 denotes a second fluid rotary cylinder attached to the frame 1 by a bracket 5, one output shaft 4a being connected to the output shaft 2a of the first fluid rotary cylinder 2 by a coupling 6, and the other output shaft 4b.
Is connected to the brake 9 and the movable arm 7 is fixed. A roller 8 is attached to the tip of the movable arm 7. It is also possible to directly bring the movable arm into contact with the cradle and swing it without attaching a roller to the tip of the movable arm.

The above-mentioned brake 9 is attached to the frame body 1 by the bracket 10. Reference numeral 11 denotes a pressure air supply main pipe, one end of which is connected to a pressure air supply source and the other end of which is branched to form a first pipe.
It is connected to the electromagnetic switching valve 12 and the second electromagnetic switching valve 22. Reference numeral 13 is a first air supply pipe, one end of which is connected to the first electromagnetic switching valve 12 and the other end of which is connected to the first fluid rotary cylinder 2.
A pressure reducing valve 14 is connected along the way. Reference numeral 15 is a first branch pipe, both ends of which are connected to the first air supply pipe 13, and a speed controller 16 and a check valve 17 are connected in the middle thereof. The second is an air supply pipe, one end of which is connected to the first electromagnetic switching valve 12 and the other end of which is connected to the first fluid rotary cylinder 2, and a speed controller 19 is connected in the middle thereof. Reference numeral 20 denotes a second technique pipe, both ends of which are connected to the second air supply pipe 18, and a check valve 21 is connected in the middle thereof. Reference numeral 23 is a third air supply pipe, one end of which is connected to the second electromagnetic switching valve 22 and the other end of which is connected to the second fluid rotary cylinder 4, and a speed controller is provided on the way.
24 and 25 are connected. Reference numeral 26 denotes a fourth air supply pipe, which is connected to the third air supply pipe 23 at both ends and the central portion, and check valves 27 and 28 are connected in the middle thereof.

The first air supply pipe 13 to which the pressure reducing valve 14, the check valve 17, and the speed controller 16 of the first electromagnetic switching valve 12 are connected, and the second air supply pipe to which the check valve 21 and the speed controller 19 are connected.
A fluid supply control means for torque that supplies and discharges fluid to and from the first fluid rotation cylinder 2 is formed by 18 and the like, and the second electromagnetic switching valve 22 and the check valves 27 and 28 and the speed controllers 24 and 25 are connected. The third air supply pipe 23 and the like form high torque fluid supply control means for supplying and discharging the fluid to and from the second fluid rotary cylinder 4.

The cradle separating operation during the yarn splicing operation by the above-mentioned cradle operating device will be described.

First, the operation sequence for the yarn splicing operation and the doffing operation and the operation sequence for the cradle operating device are set and input to the control device. Further, the pressure reducing valve is adjusted by setting the supply pressure of the pressurized air for operating the cradle operating device, and the rocking speed of the movable arm is set to adjust each speed controller.

When yarn breakage occurs during the operation of the spinning machine by performing the above operation, the disconnecting mechanism 32 operates and the disconnecting piece 32a projects between the winding package 33 of the cradle 30 and the drive roller 31, and the winding package 33 becomes It is separated from the drive roller 31.

When the yarn splicing and doffing machine (not shown) moves to a predetermined position and stops in this state, a cradle operation start signal is transmitted from the control device (not shown), and the control of the brake 9 is released. Then, the conduit of the first electromagnetic switching valve 12 is switched, and the pressure air reduced to a preset pressure by the pressure reducing valve 14 from the first air supply pipe 13 is supplied to the first fluid rotary cylinder 2 and together with the output shaft 2a. The movable arm 7 is swung downward.

The pressurized air supplied to the first fluid rotary cylinder 2 is discharged through the second air supply pipe 18 and the first electromagnetic switching valve 12.

At this time, the swing speed of the movable arm 7 is controlled by the opening amount of the speed controller 19 provided in the second air supply pipe 18, and the roller 8 attached to the tip end of the movable arm 7 is moved to the cradle 30.
Abutted against.

Then, the brake 9 is activated and a braking force is applied to the movable arm 7.
Is fixed in contact with the cradle (Fig. 4).

Then, the separating mechanism 32 operates to separate the separating piece 32a inserted between the drive roller 31 and the winding package 33.
When is retracted, a gap is created between the drive roller 31 and the winding package 33, which allows the winding package 33 to rotate freely. In this state, the winding package 33 is rotated in the reverse direction, and the movable suction pipe (not shown) is actuated to pull out the yarn and suck and convey it to the yarn splicing device (not shown).

In the above operation, the second electromagnetic switching valve 22 is the second
Since the pressurized air is not supplied to the fluid rotary cylinder 4, the output shaft 4a of the second fluid rotary cylinder 4 rotates integrally with the rotation of the output shaft 2a of the first fluid rotary cylinder 2.

When the predetermined yarn splicing operation is completed, the braking force of the brake 9 is released, the movable arm 7 is allowed to rotate freely, and the conduit of the first electromagnetic switching valve 12 is switched to the second air supply pipe. Pressure fluid from 18 is the first fluid rotating cylinder 2
And the movable arm 7 is swung upward together with the output shaft 2a.

The pressure air supplied to the first fluid rotary cylinder 2 described above passes through the first air supply pipe 13 and the first branch pipe 15, and is discharged from the first electromagnetic switching valve 12.

At this time, the speed controller provided in the first technique tube 15
The swing speed of the movable arm 7 is controlled by the opening amount of 16, and the roller 8 mounted on the movable arm 7 is separated from the cradle 30. When the movable arm 7 swings back to the standby position,
The cradle 30 is swung upward by a surface pressure imparting mechanism built in the cradle itself, the winding package 33 is brought into contact with the drive roller 31 at a predetermined surface pressure, and the winding of the yarn is restarted.

Next, the operation of separating the cradle during the doffing operation will be described.

When a preset amount of yarn has been wound and fully wound, the detachment mechanism 32 operates and the detachment piece 32a moves to the cradle 30.
The winding package 34 is separated from the drive roller 31 by being projected between the full-roll package 34 and the drive roller 31.

When the yarn splicing and doffing machine (not shown) moves to a predetermined position and stops in this state, a cradle operation start signal is transmitted from the control device (not shown), and the braking of the brake 9 is released. At the same time, the pressure air whose pressure has been reduced to a preset pressure by the pressure reducing valve 14 is supplied from the first air supply pipe 13 to the first fluid rotary cylinder 2 by switching the line of the first electromagnetic switching valve 12, and together with the output shaft 2a. The movable arm 7 is rotated.

At the same time that the conduit of the first electromagnetic switching valve 12 is switched, the conduit of the second electromagnetic switching valve 22 is switched, and the pressure air from the third air supply pipe 23 passes through the speed controller 24 and the check valve 27. The fluid is supplied to the fluid rotary cylinder 4, and the movable arm 7 is swung together with the output shaft 4a.

At this time, the swing speed of the movable arm 7 is controlled by the opening amounts of the speed controllers 16 and 24, and the movable arm 7 is swung downward by the resultant force of the first and second fluid rotation cylinders 2 and 4.
The roller 8 attached to the tip of the movable arm 7 abuts against the cradle 30 and pushes it down (Fig. 5).

The pressurized air supplied to the first fluid rotary cylinder 2 is discharged through the second air supply pipe 18 and the first electromagnetic switching valve 12.

On the other hand, the pressurized air supplied to the second fluid rotary cylinder 4 is discharged from the delivery port 4c of the cylinder 4.

When the cradle 30 is swung to the doffing position by the above-described operation, the brake 9 is activated and a braking force is applied to fix the movable arm 7 to that position.

When the doffing operation is completed by taking out the full package 33 from the cradle 30 in this state and attaching an empty bobbin, the braking of the brake 9 is released and the movable arm 7 can be freely swung. 1 The line of the electromagnetic switching valve 12 is switched so that the pressure air flows from the second air pipe 18 to the first
It is supplied to the fluid rotary cylinder 2 and the movable arm 7 is swung upward together with the output shaft 2a.

The pressure air supplied to the first fluid rotary cylinder 2 described above passes through the first air supply pipe 13 and the first branch pipe 15, and is discharged from the first electromagnetic switching valve 12.

At this time, the speed controller provided in the first branch pipe 15
The swing speed of the movable arm 7 is controlled by the opening amount of 16, and the roller 8 mounted on the tip of the movable arm 7 is separated from the cradle 30.

On the other hand, at the same time as the conduit of the first electromagnetic switching valve 12 is switched, the supply of pressurized air to the second fluid rotary cylinder 4 is stopped. Therefore, the second fluid rotary cylinder 4
The output shaft 4a becomes free to rotate, and when the first fluid rotary cylinder 2 operates and the output shaft 2a reversely rotates, the output shaft 4a of the second fluid rotary cylinder 4 rotates integrally with the output shaft 2a. Then, the atmosphere is sucked from the outlet 4c of the second fluid rotary cylinder 4, and is discharged from the second electromagnetic switching valve 22 via the third air pipe 23.

When the movable arm 7 starts to swing due to the above-described operation, the cradle 30 also swings upward due to the surface pressure imparting mechanism incorporated in the cradle itself.

At this time, from the swing speed of the movable arm 7 by the first fluid rotation cylinder 2, the cradle by the surface pressure applying mechanism of the cradle is used.
The swing speed of 30 is faster, and even if the movable arm 7 is pushed up and returned, the speed controller 25 provided in the third air supply pipe 23 and the speed controller 16 provided in the second air supply pipe 18 The swing speed of the movable arm 7 is controlled by limiting the movement amount of the atmosphere and the pressure air.

Then, the empty bobbin mounted on the cradle 30 is brought into contact with the drive roller 31, and the winding of the yarn is restarted.

In the cradle operating device of the present invention, when a yarn breakage occurs during winding as described above and a yarn joining operation is performed, the weight of the package is lighter than that in the fully wound state, and the interval dimension for separating the package from the drive roller is small. Therefore, when the doffing operation is performed by connecting the first fluid rotating cylinder 2 with the fluid supply control means for low torque to supply the compressed air so that a small turning force acts on the movable arm 7, the weight of the package is increased. Is heavier than the full-rolled state and has a large dimension for separating the package from the drive roller, so that the second fluid rotation cylinder 4 has a large turning force applied to the movable arm 7.
A fluid supply control means for high torque is connected to and to supply pressurized air.

(Advantages of the Invention) In the present invention, the cradle operating device is an operation in which a movable arm mounted on a machine frame to be swung is swung by a driving device to swing and fix a yarn winding cradle to a predetermined position. In the device, two fluid rotating cylinders and a brake are attached to the swing fulcrum of the movable arm, and one fluid rotating cylinder of the fluid rotating cylinders is provided with a low torque fluid supply control means and the other fluid rotating cylinder is provided. Since the rotary cylinders are connected to the fluid supply control means for high torque, the following effects can be obtained.

(1) The swinging and fixing operations of the cradle during the yarn splicing operation and the swinging and fixing operations of the cradle during the doffing operation can be reliably performed with one movable arm.

(2) The drive device includes an operating mechanism for swinging the movable arm to fix the cradle at a predetermined position, and an operating mechanism for swinging the movable arm to swing and fix the cradle to the doffing position. Since it is configured, it is possible to reduce the amount of compressed air consumed when returning the movable arm to the standby position.

(3) The operating mechanism for swinging the movable arm and swinging and fixing the cradle to the doffing position serves as a damper when the cradle is swung by the surface pressure applying mechanism built into the cradle. However, it is possible to prevent the empty bobbin from colliding with the drive roller.

[Brief description of drawings]

FIG. 1 is a schematic front view showing one embodiment of the cradle operating device of the present invention. FIG. 2 is a schematic side view of FIG. FIG. 3 is a circuit diagram showing one embodiment of the fluid supply circuit of the driving device of the present invention. FIG. 4 is a cradle lure operation diagram at the time of yarn splicing operation. FIG. 5 is an operation diagram of the cradle during the doffing operation. DESCRIPTION OF SYMBOLS OF THE DRAWING 1: Frame, 2: First fluid rotary cylinder, 4: Second fluid rotary cylinder, 7: Movable arm, 8: Roller, 9: Brake, 12: First
Electromagnetic switching valve, 13: First air supply pipe, 14: Pressure reducing valve, 16, 19,
24, 25: Speed controller 17, 21, 27, 28: Check valve, 1
8: Second air supply pipe, 22: Second electromagnetic switching valve, 23: Third air supply pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page Examiner Hiroyuki Sugino (56) Bibliographic references Sho 57-138858 (JP, U) JP 59-38327 (JP, B2)

Claims (1)

[Claims] 1. An operating device for swinging and fixing a yarn winding cradle to a predetermined position by swinging a movable arm swingably mounted on a machine frame by a drive device. Two fluid rotary cylinders and a brake are attached to the swing fulcrum, one of the fluid rotary cylinders is provided with a fluid supply control means for low torque, and the other fluid rotary cylinder is provided with fluid for high torque. A cradle operating device characterized in that fluid supply control means are connected to each other.