JP2000053331A - Pneumatic balance type handling device of yarn feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably reduce equipment cost without impairing a substantial function, regarding a handling device balancing weight of a yarn feeder and loading the yarn feeder on a creel. SOLUTION: This device is provided with wire, a balance force generating device 5 energizing wire in the pulling up direction and a handling head suspended at a tip of wire. The handling head is provided with a grasping member grasping a yarn feeder by being opened and the opening and closing device 23. As driving sources of the balance force generating device 5 and the opening and closing device 23, pneumatics is used. Pressure setting devices 48, 49 and a circuit switching means 51 switching pneumatics imparted to the balance force generating device 5 to at least two stages of high pressure and low pressure are provided. Further, and interlocking means 52 switching the circuit switching means 51 to a high pressure side when the opening and closing device 23 is operated in the yarn feeder grasping direction and switching the circuit switching means 51 to a low pressure side when the opening and closing device 23 is operated in the yarn feeder releasing direction is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handling device for mounting a bobbin or other yarn feeder on a creel or the like of a temporary twisting machine, and a device for generating a balance force using the weight of the yarn feeder by using air pressure. The present invention relates to the above-described device which facilitates the transfer and loading of the yarn supplying body by balancing the yarns.

[0002]

2. Description of the Related Art A creel of a temporary twisting machine is supported with the axis of a yarn feeder being horizontal. On the other hand, the yarn supplying body mounted on the temporary twisting machine has a shape in which the yarn is wound into a short cylindrical shape or a thick disk shape, and is generally packaged with the axis of the yarn supplying body up and down. Therefore, when loading the yarn feeder into the creel of the temporary twisting machine, the yarn feeder is lifted, and the axis of the yarn feeder is changed by 90 degrees from the vertical direction to the horizontal direction before mounting.

If the yarn feeder is not too heavy, it is possible to manually load the yarn feeder. However, due to the demand for long-time automatic operation, recently, the yarn feeder has become larger and heavier. Since a large number of yarn feeders are loaded on the creel, it becomes difficult to manually load the yarn feeders into the creel when the yarn feeders are heavy. Therefore, a handling device using a balancer has been provided in order to reduce the burden of loading the yarn feeder into the creel.

[0004] This type of handling device includes a wire, a balance force generator, and a handling head suspended from the lower end of the wire. The handling head is provided with a gripping head for gripping the yarn supplying body, and the gripping head includes gripping members such as claws for opening and closing and elastic swelling members. Usually, the gripping head is inserted into the paper tube at the center of the yarn feeder, and grips the yarn feeder by expanding the gripping member. The balance force generator detects a load acting on the wire by load detecting means such as a load cell, and generates a pulling force corresponding to the detected load. Therefore, the yarn feeder can be lifted to a predetermined height only by the operator slightly raising the handling head. The yarn feeder lifted to a predetermined height is rotated by the operator, or the turning device provided in the handling head changes the direction of the gripping head, and the shaft is turned horizontally to the creel. Will be loaded. Since the handling head is suspended by the wire, the handling head can be moved in the forward, backward, left, and right directions within a certain range without moving the balance force generator.

[0005]

If such a balance type handling device is used, even if the weight of the yarn feeder is large, the balance force generating device generates a pulling force that balances the weight. The operator can move the yarn feeder up and down with a small force, and the work load when loading the yarn feeder into the creel is greatly reduced. However, since the balance device used in this type of conventional handling device has a control structure of detecting a load of a suspended load and generating a balance force corresponding to the load,
There has been a problem that the apparatus becomes expensive and the economic burden required for capital investment increases.

That is, in this kind of conventional yarn supplying body handling apparatus, a general balance type cargo handling apparatus is used as it is. In a general balance type cargo handling apparatus, the weight of the suspended load is not constant. In order to achieve the balance operation, a load detection device and a balance force generation device that can continuously change the lifting force according to the weight of the suspended load are required, and the operator lifts the handling head. It is necessary to control the operation of adjusting the biasing force of the balance force generating device by detecting the operation of pushing or pushing down based on a change in load or the displacement of the operation handle, which makes the device extremely expensive.

Therefore, the present invention focuses on the fact that the weight of the yarn feeder, which is the object to be conveyed, is usually constant at each factory, and simplifies the balance means in the yarn feeder handling apparatus. It is an object of the present invention to provide a yarn feeder handling device in which equipment costs are significantly reduced without impairing a substantial function as a handling device.

[0008]

SUMMARY OF THE INVENTION A pneumatic balance type handling apparatus for a yarn supplying body according to the present application includes a wire 6, a balance force generating device for urging the wire in a lifting direction, and
And a handling head 7 suspended at the end of the wire. The handling head 7 is provided with a gripping member 22 that expands and grips the yarn feeder, and an opening / closing device 23 thereof. Air pressure is used as a drive source of the balance force generator 5 and the opening / closing device 23, and the pressure setting devices 48 and 49 and the circuit switching means 51 for switching the air pressure applied to the balance force generator 5 to at least two stages of high pressure and low pressure. Prepared,
Further, when the opening / closing device 23 is operated in the yarn supplying body gripping direction, the circuit switching means 51 is switched to the high pressure side, and when the opening / closing device 23 is operated in the yarn supplying body releasing direction, the circuit switching means 51 is switched to the low pressure side. Is provided.

By switching the air pressure applied to the balance force generator 5 between a low pressure and a high pressure, a wire pulling force corresponding to the weight of the handling head alone and the weight of the yarn feeder when the yarn feeder is gripped is generated to balance the weight. So that the operation of the handling head is performed with a light force. Changes in the balance force corresponding to the pressure of the air to be used, the weight of the yarn feeder, and the like are determined by the pressure setting devices 48 and 4.
The switching of the pressure between when the yarn supplying body is gripped and when the yarn supplying body is not gripped is performed by the circuit switching means 51.
Further, by providing the interlocking means 52, the balance force between when the yarn supplying body is gripped and when it is not gripped is automatically switched.

[0010] By suspending the handling head 7 with a wire, there is a margin for the handling head to be moved manually, and the operation is easy and smooth, and the urging force of the balance force generator is smoothly applied to the handling head with a simple structure. Can be transmitted to

According to a second aspect of the present invention, the balance force generating device 5 in the above means is a pneumatic cylinder, and is provided with locking means 54, 71 for fixing a rod of the pneumatic cylinder when supply air pressure is lost. Things. The use of the pneumatic cylinder simplifies the structure of the device, and the provision of the lock means makes it possible to prevent the handling head and the yarn feeder from dropping when the driving air pressure is lost due to an accident or the like.

The handling device according to a third aspect of the present invention is characterized in that the interlocking means is a pressure control switching valve 51 which is operated by a change in the air pressure supplied to the opening / closing device 23, and converts the balance force. Can be realized automatically and with a simple structure.

According to a fourth aspect of the present invention, there is provided a handling device comprising a detecting end 67 for detecting whether or not the yarn feeder 17 is held by the interlocking means in contact with the gripping head 11 and a switching valve 51 for switching the pneumatic circuit by its operation. The present invention is characterized in that the conversion of the balance force related to the presence or absence of the yarn feeder can be accurately performed with a relatively simple structure.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Overall Configuration Two horizontal rails 1 are arranged along the path above a front surface of a creel of a false twisting machine arranged opposite to the path with the path interposed therebetween, and are orthogonal to the rails. A traverser 82 having a cross rail 81 is provided movably along the rail 1. The carrier 2 is suspended from the traverser by free rotating wheels rolling on the cross rail. A fixed pulley 3 is axially mounted on the carrier 2, and an air cylinder (balance force generating device) 5 with a horizontal locking mechanism provided with a moving pulley 4 at the rod end is mounted. A wire 6, one end of which is fixed to the carrier 2, is wound around the moving pulley 4 and the constant pulley 3 and is suspended therefrom. A handling head 7 is suspended at a lower end of the wire.

At the upper end of the handling head 7, there are provided a plurality of holes 9 for inserting hooks 8 at the ends of the wires, and the hooks 8 are connected to appropriate holes according to the weight of the yarn supplying body to be handled. Set the handling head 7 in a position that allows easy operation.

Handling Head The handling head 7 has a main body 10 and a short cylindrical holding head 11. The main body 10 includes a U-shaped upper handle 12 and a rod-shaped lower handle 13 so that an operator can operate the handling head with both hands.
The turning shaft 15 is rotatably supported on the handling head body 10 by a bearing (not shown) at an angle of 45 degrees downward, and the gripping head 11 is mounted via a bracket 15a at the lower end of the turning shaft.

The bracket 15a is about 4
The gripping head 11 extends in a direction of 5 degrees, and is fixed at its tip to a cantilever. The gripping head 11 has its axis 20
Is provided so as to intersect with the axis 16 of the turning shaft 15 at an angle of 45 degrees on the extension of. The attachment position of the gripping head 11 to the bracket 15a is determined so that when the gripping head 11 is inserted through the paper tube 18 of the yarn feeder 17, the center of gravity of the yarn feeder is approximately on the axis 16 of the turning shaft.

A driving device for rotating the turning shaft 15 by 180 degrees is provided in the handling head body 10. The illustrated drive device 21 is an air actuator having a structure in which the axial movement of a pneumatic piston is converted into a rotational movement by a rack and pinion mechanism.

The gripping head 11 is provided with a claw 22 which protrudes outward from the peripheral surface thereof, and a claw opening / closing cylinder 23 for opening and closing the claw is provided on the axis 20 of the gripping head. . The pawl opening / closing cylinder 23 has a conical cam 24
The claw 22 is opened and closed by the axial movement of the rod 64 by the action of. When the claw 22 is spread outward, the paper core 1 of the yarn feeder is opened.
8 is pushed and expanded from the inside and gripped, and the yarn feeder 17 is released when retracted.

The handling head main body 10 includes a turning lever 26 for rotating the driving device 21 for the turning shaft, and a claw 22.
, A forcible release button 28 for forcibly releasing the yarn feeder, and a pressure gauge 29 for displaying the air pressure of the balance cylinder 5.

The gripping head 11 faces downward at one rotation end of the turning shaft 15 and turns horizontally at the other rotation end.
That is, since the turning shaft 15 is provided in the vertical direction at 45 degrees and the gripping head 11 at the tip thereof intersects the center of the turning shaft at an angle of 45 degrees, the turning shaft 1
5 is rotated 180 degrees, the direction of the gripping head 11 is switched between downward and sideways. When the yarn feeder is turned by setting the positional relationship between the gripping head 11 and the axis 16 of the turning shaft 15 to a positional relationship in which the center of gravity of the yarn feeder held by the gripping head 11 coincides with the axis of the turning shaft 15. Of the center of gravity can be avoided.

Pneumatic Circuit The drive air pressure of the balance cylinder 5, the air actuator 21 for driving the turning shaft, and the pawl opening / closing cylinder 23 is supplied from the compressor 31 via the filter 32, the mist separator 33, and the regulator 34. The air pressure of the air actuator 21 for reversing the yarn feeder is controlled by the turning lever 26.
The switching is performed by the switching valve 35 operated by. The circuit of the air actuator 21 is provided with flow rate adjusting valves 36 and 37 for adjusting the rotation speed.

The air pressure of the pawl opening / closing cylinder 23 for opening / closing the pawl 22 is switched by a switching valve 38 operated by the pawl opening / closing lever 27. The circuit 40 on the exhaust side when the cylinder 23 is operated on the yarn feeder release side (arrow A side in FIG. 3)
The pilot check valves 41 and 42 are provided. The first pilot check valve 41 prevents exhaust if the air pressure is lost due to an accident or the like, so that the yarn supply body is released and does not fall if pressure is not supplied to the pneumatic circuit 43 on the opposite side. It is provided in order to perform. The second pilot check valve 42 receives pilot pressure from a circuit 44 on the side of the gripping head 11 of the air cylinder 23 facing downward and a circuit 45 switched by the forcible release button 28, and the gripping head 11 faces downward. In this case, the yarn feeder is not released simply by operating the claw opening / closing lever 27, and the claw 22 does not retract unless the forced release button 28 is pressed together with the claw opening / closing lever 27. This is to prevent the yarn feeder from dropping due to the operation of the claw open / close lever 27 by mistake. In these circuits, 46 is a flow control valve, and 47 is a pressure reducing valve.

The balance pressure and the lock release pressure are supplied to the balance cylinder 5. The high-pressure side and the low-pressure side are set by two precision pressure reducing valves 48 and 49, and the balance pressure is switched to one of the set pressures by a pneumatic operation switching valve 51. The air pressure switching valve 51 can be switched by the air pressure of the yarn feeder gripping side circuit 40 of the claw opening / closing cylinder 23. That is, when the claw is operated in the yarn supplying body gripping direction, the air pressure operation switching valve 51 is switched to the high pressure side by the pressure. When the balance pressure is switched to the low pressure side, the balance pressure of the balance cylinder 5 quickly becomes the low pressure side pressure by the operation of the quick exhaust valve 53.

The lock mechanism 54 of the balance cylinder mechanically grips the cylinder rod and fixes the rod 25 when the air pressure supplied to this part is lost. This prevents the handling head 7 from dropping when the air pressure is lost due to an accident or the like.

Operation and Operation With the gripping head 11 facing downward and the claws 22 in a retracted state, the gripping head 11 is inserted into a paper tube of a yarn feeder placed with the axis perpendicular to the floor surface. Next, the pawl opening / closing lever 27 on the front of the handling head 7 is tilted upward. The claw 22 is opened inside the paper tube, and the gripping head 11 grips the yarn feeder.
At this time, the pressure of the balance cylinder is high due to the pressure of the pneumatic circuit that opens the pawl 22, that is, the handling head 7
Then, the pressure is switched to a pressure that balances the weight of the yarn supplying body, and the operator does not feel the weight of the yarn supplying body. The operator holds the upper handle 12 of the handling head 7 and lifts it to the creel level. In this state, the claw is not retracted unless both the claw force release button 28 and the claw opening / closing lever 27 on the side surface of the handling head are operated, so that the yarn feeder is not accidentally dropped.

Next, the turning lever 26 is lowered. Gripping head 1
Numeral 1 rotates the handling head 7 by 180 degrees about a downward 45-degree axis 16. Since the yarn feeder is turned from the downward direction to the horizontal direction and pivots substantially at the position of the center of gravity of the yarn feeder, no vibration or extra force acts on the handling head 7 and hence the operator's hand.

Insert the paper tube of the yarn feeder into the mandrel of the creel, and lower the claw opening / closing lever 27 downward to return it to its original position. This immediately switches the pneumatic pressure of the balance cylinder to a low pressure, that is, a pressure that balances the weight of only the handling head 7, the claw 22 is retracted, and the gripping head 11 releases the yarn feeder. Break away from Next, the gripping head 11 is turned downward by returning the turning lever 26 to the original position. By repeating the above, the yarn feeder placed on the floor can be supplied to the creel without requiring any force.

Description of Second Embodiment FIGS. 5 and 6 show a main part of a second embodiment of the present invention. FIG. 5 is a detailed view of a gripping head, and FIG. 6 is a claw opening / closing cylinder 23 and a balance cylinder 5. It is a figure which shows the pneumatic circuit of a part. A detection valve 61 for detecting the presence or absence of a yarn feeder is mounted on the gripping head 11 of the second embodiment. In FIG. 5, when the piston rod 62 is retracted, the conical cam 24 fixed to the tip of the pawl opening / closing cylinder 23 is retracted, and the radial pin 64 abuts against the rear surface of the pawl 22. Is pushed outward, and the pushing force is used to open the pawl 22 around the fulcrum pin 65 to grip the yarn feeder.

The length of the gripping head 11 is approximately one-third the axial length of the yarn feeder, so that the yarn feeder can be transferred to and from the mandrel of the creel. . The detection valve 61 is provided so that the detection arm 67 protrudes outside the peripheral surface of the gripping head 11, and when the gripping head 11 is inserted into the yarn supplying body, the detection arm 67 is indicated by a dotted line in the figure. To open and close the air flow path between the air pipes 68 and 69.

In the pneumatic circuit of FIG. 6, the drive circuit of the pawl opening / closing cylinder 23 is the same as that of the first embodiment shown in FIG. The driving circuit of the balance cylinder is different from that of the first embodiment, and a light resistance cylinder having no lock mechanism is used as the balance cylinder 5.
Since the balance cylinder 5 does not have a lock mechanism,
A pilot check valve 71 is provided in the balance pressure supply circuit so that the balance pressure can be maintained even when the air pressure is lost.

A pressure setting valve 72 for determining the balance pressure
Uses a structure in which the set pressure is switched by the pilot pressure. The pilot pressure is set in two stages by the pilot pressure adjusting valves 48 and 49 on the low pressure side and the high pressure side, and is set by the pilot pressure switching valve 51. I'm trying to switch. The pilot pressure switching valve 51 is adapted to be switched to the high pressure side in conjunction with the air pressure of the clamp side circuit (the side for gripping the yarn feeder) 40 of the pawl opening / closing cylinder. The detection valve 61 described above is interposed. The detection valve 61 allows the interlocking circuit 52 to communicate when the detection arm 67 is pushed.

As will be understood from the above description, when the pawl opening / closing cylinder 23 is driven in the direction of gripping the yarn feeder and the detection arm 67 of the detection valve 61 is pushed in, the pilot pressure is switched. The valve 51 is switched to the high pressure side, the pressure of the pressure setting valve 72 is set to the high pressure side, and the high pressure is supplied to the balance cylinder 5. On the other hand, when the pawl opening / closing cylinder 23 is driven to the side that releases the yarn feeder, and when the detection valve 6 is driven in the direction to grip the yarn feeder,
1 does not detect the yarn feeder, the operating air pressure is not supplied to the pilot pressure switching valve 51 and the pilot port on the low pressure side acts on the pilot port of the pressure setting valve 72. Is supplied to the low pressure side, and balances with the weight of the handling head alone.

The gripping head shown in the above-described embodiment has a structure for holding the yarn feeder by opening and closing the claws. However, air pressure is supplied to the inside of the elastic ring provided on the outer periphery of the gripping head so that the elastic ring is formed. A gripping head that grips the yarn feeder by inflating, or a gripping head that compresses the ring-shaped rubber material in the axial direction to expand the rubber material in the outer circumferential direction and grip the yarn feeder is also practical. Since these devices grip and release the yarn feeder by supplying air pressure, it is of course possible to configure the apparatus of the present invention using such a gripping head.

In the second embodiment described above, since the presence / absence of the yarn feeder is positively detected by the detection valve and the pressure of the balance cylinder is switched, a more accurate balance operation is possible.

[Brief description of the drawings]

FIG. 1 is a perspective view of a carrier of the present invention and a rail for suspending the carrier.

FIG. 2 is a perspective view of a handling head of the present invention.

FIG. 3 is a partial cross-sectional side view of the handling head of the present invention.

FIG. 4 is a pneumatic circuit diagram of the first embodiment.

FIG. 5 is a detailed sectional view of a gripping head according to a second embodiment.

FIG. 6 is a pneumatic circuit diagram of a second embodiment.

[Explanation of symbols]

 5 Balance Force Generating Device 6 Wire 7 Handling Head 11 Gripping Head 17 Thread Supply 22 Claw 23 Claw Opening / Closing Device 48,49 Pressure Setter 51 Circuit Switching Means 52 Interlocking Means 54,71 Locking Means 67 Detection End

Claims (4)

[Claims] 1. A system comprising a wire (6), a balance force generator for urging the wire in a lifting direction, and a handling head (7) suspended at the tip of the wire, wherein the handling head (7) is expanded. In a yarn feeder handling device provided with a gripping member (22) for gripping the yarn feeder and an opening / closing device (23) thereof, a balance force generator (5) and an opening / closing device (23)
Air pressure is used as a drive source for the balance force generator
Pressure setting devices (48, 49) and circuit switching means (51) for switching air pressure given to (5) to at least two stages of high pressure and low pressure
When the opening and closing device (23) is operated in the yarn supplying body gripping direction, the circuit switching means (51) is switched to a high pressure side and the opening and closing device is switched.
(23) an interlocking means (52) for switching the circuit switching means (51) to the low pressure side when the (23) is operated in the yarn feeder releasing direction, wherein the air pressure balance type of the yarn feeder is provided. Handling equipment. 2. The method according to claim 1, wherein the balance force generator (5) is a pneumatic cylinder and includes locking means (54, 71) for fixing a rod of the pneumatic cylinder when supply air pressure is lost. An apparatus for pneumatically balancing a yarn supply according to claim 1. 3. The pneumatically balanced handling of a yarn feeder according to claim 1, wherein said interlocking means is a pressure-operated switching valve (51) which is operated by a change in air pressure supplied to an opening / closing device (23). apparatus. 4. A detection end (6) for detecting whether or not the interlocking means comes into contact with the yarn feeder (17) gripped by the gripping head (11).
The pneumatically balanced handling system of claim 1 or 2, further comprising a switching valve (51) for switching the pneumatic circuit by the operation of (7).