JP4119013B2 - Pneumatic balance type handling device for yarn feeder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a handling device used for mounting bobbins and other yarn feeding bodies on a creel of a temporary twisting machine, etc., and balancing the weight of a yarn feeding body with a balance force generator utilizing air pressure, The present invention relates to the above-described apparatus that facilitates body transport and loading operations.
[0002]
[Prior art]
The creel of the temporary twisting machine is supported with the axis of the yarn feeder horizontally. On the other hand, the yarn supplying body to be mounted on the temporary winding machine has a shape in which the yarn is wound in a short cylindrical shape or a thick disk shape, and is generally packed with the axis of the yarn supplying body in the vertical direction. Therefore, when loading the yarn feeder into the creel of the temporary twisting machine, the yarn feeder is lifted, and the shaft of the yarn feeder is changed by 90 degrees from the vertical direction to the horizontal direction and attached.
[0003]
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, the yarn feeders have recently 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 become heavy. Therefore, a handling device using a balancer has been provided in order to reduce the burden of loading the yarn feeder onto the creel.
[0004]
This type of handling device includes a wire, a balance force generating device, 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 a claw for opening and closing and an elastic bulging member. The normal gripping head is inserted into a paper tube at the center of the yarn supplying body, and grips the yarn supplying body by expanding the gripping member. The balance force generator detects a load acting on the wire by load detection means such as a load cell, and generates a lifting force corresponding to the detected load. Therefore, the operator can lift the yarn feeder to a predetermined height only by slightly moving the handling head upward. The yarn feeder that has been lifted to a predetermined height is turned into a creel by turning the handling head by an operator or by changing the direction of the gripping head with a turning device provided on the handling head so that the shaft is oriented horizontally. Loaded. Since the handling head is suspended by the wire, the handling head can be moved in the front-rear and left-right directions within a certain range even if the balance force generator does not move.
[0005]
[Problems to be solved by the invention]
By using such a balance type handling device, even if the weight of the yarn feeder is large, the balance force generator generates a pulling force that balances the weight. Can be moved up and down, and the work burden when loading the yarn feeder into the creel is greatly reduced. However, the balance device used in the conventional handling device of this type is equipped with a control structure that detects the load of the suspended load and generates a balance force corresponding to the load, which makes the device expensive. There was a problem that the economic burden necessary for capital investment was increased.
[0006]
That is, the conventional yarn feeder handling device of this type uses a general balance-type cargo handling device as it is, and the weight of the suspended load is not constant in the general balance-type cargo handling device. In order to achieve this, a load detection device and a balance force generator that can continuously change the lifting force according to the weight of the suspended load are required, and the operator can lift and push down the handling head. Therefore, it is necessary to perform a control of detecting a movement to be detected by a load change or a displacement of the operation handle and adjusting a biasing force of the balance force generating device, which makes the device very expensive.
[0007]
In view of this, the present invention provides a handling device by simplifying the balancing means, focusing on the fact that the weight of the yarn feeding body, which is the object to be conveyed, is normally constant for each factory in the yarn feeding body handling device. It is an object of the present invention to provide a yarn feeder handling apparatus that greatly reduces the equipment cost without impairing the substantial function of the apparatus.
[0008]
[Means for Solving the Problems]
The pneumatic balance type handling device for a yarn feeding body according to this application includes a wire 6, a balance force generating device that urges the wire in the pulling direction, and a handling head 7 suspended from the tip of the wire. The handling head 7 includes a gripping head 11 that rotates 180 degrees about an axis 16 of 45 degrees downward and changes direction in two directions, downward and lateral, and the gripping head expands to grip the yarn supply body. A gripping member 22 and its opening / closing device 23 are provided. Air pressure is used as a drive source for the balance force generator 5 and the opening / closing device 23, and pressure setting devices 48 and 49 for switching the air pressure applied to the balance force generator 5 in at least two stages, high pressure and low pressure, and circuit switching means 51. And the circuit switching means 51 is switched to the high pressure side when the opening / closing device 23 is operated in the yarn feeder gripping direction and the circuit switching means 51 is switched when the opening / closing device 23 is operated in the yarn feeding body release direction. Interlocking means 52 for switching to the low pressure side is provided.
[0009]
By switching the air pressure applied to the balance force generator 5 between low pressure and high pressure, a wire pulling force corresponding to the weight of the handling head alone and when the yarn feeder is gripped is generated to balance the weight, The handling head is operated 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, etc. are adjusted by adjusting the pressure setting devices 48 and 49. Switching between the pressure when the yarn feeder is gripped and the pressure when the yarn feeder is not gripped is as follows: This is done by the circuit switching means 51. Further, by providing the interlocking means 52, the balance force is automatically switched between when the yarn feeder is gripped and when it is not gripped.
[0010]
By suspending the handling head 7 with a wire, there is a margin in the movement of the handling head by manual operation, the operation becomes easy and smooth, and the urging force of the balance force generator can be smoothly transmitted to the handling head with a simple structure. .
[0011]
When the balance force generating device 5 to pneumatic cylinder is provided with a locking means 54, 71 for fixing the rod of the pneumatic cylinder when the supply air pressure is lost. By using the pneumatic cylinder, the structure of the apparatus is simplified, and by providing the locking means, it is possible to avoid the handling head and the yarn feeder from dropping when the driving air pressure is lost due to an accident or the like.
[0012]
The air pressure is used as a drive source of the drive device 21 that rotates the gripping head 11 180 degrees, and the interlocking means contacts the yarn supplying body 17 gripped by the gripping head 11 and detects the presence or absence thereof and its operation. With the structure including the switching valve 51 for switching the pneumatic circuit, the balance force related to the presence or absence of the yarn feeder can be accurately converted with a relatively simple structure.
[0013]
The pneumatic balance-type handling device for a yarn feeder according to the invention of claim 2 is the handling device having the above-described structure, wherein the gripping member opening / closing device 23 is controlled by the air pressure in the direction in which the gripping head 11 of the driving device 21 faces downward. It is characterized by comprising safety means for blocking the air passage in the direction of releasing the yarn feeder 17.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
(1) Two rails 1 in the horizontal direction are arranged along the passage above the front surface of the creel of the temporary cutting machine arranged so as to face each other across the entire configuration passage, and a crossing rail 81 orthogonal to the rails. A traverser 82 provided with is provided movably along the rail 1. A carrier 2 is suspended from the traverser by free-wheels that roll on crossing rails. A fixed pulley 3 is pivotally mounted on the carrier 2, and a horizontal air cylinder with a lock mechanism (balance force generating device) 5 provided with a moving pulley 4 at the rod tip is mounted. A wire 6 having one end fixed to the carrier 2 is wound around the moving pulley 4 and the fixed pulley 3 in order and suspended, and a handling head 7 is suspended from the lower end of the wire.
[0015]
A plurality of holes 9 for inserting the hooks 8 at the tip of the wire are provided in the upper end portion of the handling head 7. The hooks 8 are connected to appropriate holes according to the weight of the yarn feeder to be handled. Make the posture easy to operate.
[0016]
(2) Handling head The handling head 7 includes a main body 10 and a short cylindrical gripping 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. On the handling head body 10, a pivot shaft 15 is pivotally supported at a 45 degree downward angle by a bearing (not shown), and a gripping head 11 is mounted via a bracket 15a at the lower end of the pivot shaft.
[0017]
The bracket 15a extends in a direction of about 45 degrees from the pivot shaft 15, and the gripping head 11 is fixed in a cantilever manner at the tip thereof. The gripping head 11 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 axis 20. The attachment position of the gripping head 11 to the bracket 15a is determined so that when the gripping head 11 is inserted into 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.
[0018]
The handling head body 10 is provided with a drive device that rotates the turning shaft 15 by 180 degrees. The driving device 21 shown in the figure is an air actuator having a structure for converting the axial movement of the pneumatic piston into a rotational movement by a rack and pinion mechanism.
[0019]
The gripping head 11 is provided with a claw 22 that protrudes so as to expand outside the peripheral surface, and a claw opening / closing cylinder 23 that opens and closes the claw is provided on the axis 20 of the gripping head. The claw opening / closing cylinder 23 opens and closes the claw 22 by the action of the conical cam 24 by the axial movement of the rod 64. When the claw 22 is expanded outward, the paper tube 18 of the yarn supplying body is pushed and held from the inside, and the yarn supplying body 17 is released when the paper tube 18 is retracted.
[0020]
The handling head body 10 includes a turning lever 26 that rotates the drive device 21 of the turning shaft, an open / close lever 27 that opens and closes the pawl 22, a forced release button 28 that forcibly releases the yarn feeder, and an air pressure of the balance cylinder 5. And a pressure gauge 29 for displaying.
[0021]
The gripping head 11 faces downward at one rotation end of the turning shaft 15 and faces the horizontal direction at the other rotation end. That is, the turning shaft 15 is provided in the direction of 45 degrees in the vertical direction, and the gripping head 11 at the tip of the turning shaft 15 intersects at an angle of 45 degrees with respect to the center of the turning axis. By rotating, the direction of the gripping head 11 is switched between the downward direction and the horizontal direction. When turning the yarn supplying body by setting the positional relationship between the gripping head 11 and the axis 16 of the turning shaft 15 so that the center of gravity of the yarn supplying body held by the holding head 11 coincides with the axis of the turning shaft 15. Can be avoided.
[0022]
(3) The drive air pressure of the pneumatic circuit balance cylinder 5, the air actuator 21 for driving the turning axis and the claw 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 switched by the switching valve 35 operated by the turning lever 26. The circuit of the air actuator 21 is provided with flow rate adjusting valves 36 and 37 for adjusting the rotation speed.
[0023]
The air pressure of the claw opening / closing cylinder 23 that opens and closes the claw 22 is switched by a switching valve 38 operated by a claw opening / closing lever 27. Two pilot check valves 41 and 42 are provided in 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 first pilot check valve 41 prevents the pneumatic supply circuit 43 on the opposite side from being exhausted unless pressure is supplied, and prevents the yarn feeder from being released and dropped when the air pressure is lost due to an accident or the like. It is provided to do. The second pilot check valve 42 receives pilot pressure from a circuit 44 on the side where the gripping head 11 of the air cylinder 23 faces downward and a circuit 45 which is switched by the forced release button 28, so that the gripping head 11 faces downward. When the claw opening / closing lever 27 is simply operated, the yarn feeder is not released, 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 erroneous operation of the claw opening / closing lever 27. In these circuits, 46 is a flow rate adjusting valve and 47 is a pressure reducing valve.
[0024]
The balance cylinder 5 is supplied with a balance pressure and a lock release pressure. The balance pressure is set to the high pressure side and the low pressure side by the two precision pressure reducing valves 48 and 49, and is switched to one of the set pressures by the pneumatic operation switching valve 51. The air pressure switching valve 51 is 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 moved in the yarn feeder gripping direction, the pneumatic 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.
[0025]
When the air pressure supplied to this portion disappears, the balance cylinder lock mechanism 54 mechanically grips the cylinder rod and fixes the rod 25. This can prevent the handling head 7 from falling when the air pressure is lost due to an accident or the like.
[0026]
(4) Operation and operation With the gripping head 11 facing downward and the claw 22 retracted, the gripping head 11 is inserted into the paper tube of the yarn feeder placed on the floor surface with the axis line in the vertical direction. Next, the claw opening / closing lever 27 on the front surface of the handling head 7 is tilted upward. The claw 22 opens inside the paper tube, and the gripping head 11 grips the yarn feeder. At this time, the pressure of the pneumatic circuit that opens the pawl 22 switches the pressure of the balance cylinder to a high pressure, that is, a pressure that balances the weight of the handling head 7 and the yarn feeder, and the operator does not feel the weight of the yarn feeder. The operator holds the upper handle 12 of the handling head 7 and lifts it to the height of the creel. In this state, since the claw is not degenerated unless both the claw forced release button 28 and the claw opening / closing lever 27 on the side surface of the handling head are operated, the yarn feeder is not accidentally dropped.
[0027]
Next, the turning lever 26 is tilted. The gripping head 11 rotates 180 degrees about a downward 45-degree axis 16 of the handling head 7. Since the yarn supplying body is turned from the bottom to the side and is rotated substantially at the position of the center of gravity of the yarn supplying body, vibration and extra force do not act on the handling head 7 and the operator's hand.
[0028]
Insert the paper tube of the yarn feeder into the mandrel of the creel and tilt the claw opening / closing lever 27 downward to return it to its original position. As a result, the pneumatic pressure of the balance cylinder is immediately switched to a low pressure, that is, a pressure that balances the weight of the handling head 7 alone, the claw 22 is retracted, and the gripping head 11 releases the yarn supply body. Leave. Next, the gripping head 11 is turned downward by returning the turning lever 26 to its original position.
The yarn feeder placed on the floor surface by repeating the above can be supplied to the creel without requiring any force.
[0029]
(5) Description of Second Embodiment FIGS. 5 and 6 show the 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. The gripping head 11 of the second embodiment is equipped with a detection valve 61 that detects the presence or absence of a yarn feeder. In FIG. 5, when the piston rod 62 of the claw opening / closing cylinder 23 is retracted, the conical cam 24 fixed to the tip of the rod is retracted, and the radial pin 64 is brought into contact with the back surface of the claw 22. Is pushed outward and the claw 22 is opened around the fulcrum pin 65 by this pushing force to grip the yarn feeder.
[0030]
The length of the gripping head 11 is about one third of the axial length of the yarn feeder, and the yarn feeder can be transferred to and from the creel mandrel. The detection valve 61 is provided so that its detection arm 67 protrudes outward from the peripheral surface of the gripping head 11, and when the gripping head 11 is inserted into the yarn feeder, the detection arm 67 is indicated by a dotted line in the figure. The air flow path between the air pipes 68 and 69 is opened and closed.
[0031]
In the pneumatic circuit of FIG. 6, the driving circuit of the claw opening / closing cylinder 23 is the same as that of the first embodiment shown in FIG. The drive 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.
[0032]
The pressure setting valve 72 for determining the balance pressure uses a structure in which the set pressure is switched by the pilot pressure, and the pilot pressure is set in two stages by the low-pressure side and high-pressure side pilot pressure adjusting valves 48 and 49. The pilot pressure switching valve 51 is used to switch it. The pilot pressure switching valve 51 is switched to the high pressure side in conjunction with the air pressure of the clamp side circuit (side for holding the yarn feeder) 40 of the claw opening / closing cylinder. The detection valve 61 described in (1) is interposed. The detection valve 61 makes the interlock circuit 52 communicate when the detection arm 67 is pushed.
[0033]
As understood from the above description, when the claw 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 switching valve 51 is The pressure 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 claw opening / closing cylinder 23 is driven to release the yarn supplying body and when it is driven in the direction of gripping the yarn supplying body, the detection valve 61 does not detect the yarn supplying body. No operating air pressure is supplied to the pressure switching valve 51, and the pilot pressure on the low pressure side acts on the pilot port of the pressure setting valve 72. Therefore, the air pressure supplied to the balance cylinder 5 becomes the low pressure side air pressure, and the handling head Only to balance with weight.
[0034]
The gripping head shown in the above embodiment has a structure that holds the yarn feeder by opening and closing the claw. However, the elastic ring is inflated by supplying air pressure to the inside of the elastic ring provided on the outer periphery of the gripping head. A gripping head that grips the yarn supplying body by a ring or a gripping head that compresses the ring-shaped rubber material in the axial direction to inflate the rubber material in the outer peripheral direction to grip the yarn supplying body is also in practical use. Since both of these hold 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.
[0035]
In the second embodiment described above, since the presence or 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]
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 partially sectional side view of the handling head of the present invention. Fig. 5 is a pneumatic circuit diagram of the first embodiment. Fig. 5 is a detailed sectional view of the gripping head of the second embodiment. Fig. 6 is a pneumatic circuit diagram of the second embodiment.
5 Balance force generator 6 Wire 7 Handling head
11 Grip head
17 Yarn feeder
22 nails
23 Claw opening and closing device
48,49 Pressure setter
51 Circuit switching means
52 Interlocking means
54,71 Locking means
67 Detection end

Claims (2)

A wire (6), a balance force generating device for urging the wire in the pulling direction, and a handling head (7) suspended from the tip of the wire, the handling head (7) having a downward 45 degree axis ( 16) provided with a gripping head (11) that rotates 180 degrees around and changes direction in two directions, downward and sideways, the gripping head expands and grips the yarn feeding body (22) and In the yarn feeder handling device provided with the opening and closing device (23),
Air pressure is used as a drive source of the drive unit (21) and said balancing force generator which 180 degrees rotation of the gripping head (11) (5) and the opening and closing device (23), the air pressure applied to the balancing force generating device (5) The pressure setting device (48, 49) and circuit switching means (51) for switching the pressure in at least two stages of high pressure and low pressure, and the yarn supply body (17) gripped by the gripping head (11) to determine whether it exists. A detection end (67) for detecting ,
Switchgear (23) switches the circuit switching means (51) when the operating life and death detection end in the weft supply package gripping direction (67) is detecting the yarn supplier (17) on the high pressure side, and the opening and closing device (23) is characterized in that it comprises a said interlocking means circuit switching means (51) switched to the low-pressure side (52) when operated in the weft supply package releasing direction, air pressure balance yarn suppliers Type handling device. Safety means for blocking an air passage in a direction to release the yarn feeder (17) of the opening / closing device (23) by air pressure in a direction in which the gripping head (11 ) of the driving device (21) is directed downward is provided. The pneumatic balance type handling device for a yarn feeder according to claim 1 .

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