JPH031489Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a doffing truck that automatically moves and exchanges a full package on a winding device and an empty bobbin on a peg stand in a yarn false twisting machine. The present invention relates to a device that controls a doffing truck to have a correct posture with respect to a winding device.

[Prior Art] As shown in FIG. 6, a yarn false twisting machine passes a filament yarn Y fed out from a yarn feeding package P1 of a creel stand a to a first heater b, a yarn cooling plate c, a false twisting device d, and a second heater e. The fibers are sequentially subjected to false twisting and wound onto a winding package P2 in a winding device f. A plurality of pegs g supporting empty bobbins B are located at positions facing the winding device f.
A peg stand h is arranged. Conventionally, the doffing operation of doffing the fully wound package P2 in the winding device f and replacing it with an empty bobbin B in the peg stand h was done manually, which was difficult. Therefore, in order to automate the doffing work, the present applicant filed an application for a device that automatically exchanges the full package P2 with the empty bobbin B using the doffing cart i (Japanese patent application filed in 1983- 227476) (Japanese Patent Application Laid-Open No. 62-97341). This device runs a doffing cart i on a rail j laid on a floor k between winding devices f arranged adjacent to each other and a peg stand h facing them, and a fully wound package P2 and This is to replace the empty bobbin B.

By the way, in order to doff the full package P2 on the winding device f using the doffing truck i and replace it with an empty bobbin B, the doffing truck i must be maintained in the correct posture with respect to the winding device f. It is necessary.

[Problems that the invention attempts to solve] However, in the case of conventional doffing carts, 2
Since the doffing cart ran on the main rails, first of all, in order to maintain the doffing cart in the correct position, the two rails had to be placed with precision, which made the placement work difficult. Not only were there problems, but there was also a problem that vibrations and noise were large during running, and the rails laid on the floor obstructed threading and maintenance.

Therefore, the present invention was devised to solve these problems, and its purpose is to facilitate the installation of guide rails, reduce vibration and noise during running, and do not interfere with threading or maintenance. Moreover, it is an object of the present invention to provide a posture control device for a doffing truck that can easily maintain the doffing truck in a proper posture.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a winding device that passes between a winding device of a yarn false twisting machine and a peg stand opposite thereto, and In a doffing truck for exchanging the winding package cage and the empty bobbin on the peg stand, a guide rail is provided at the bottom of the winding device along the arrangement direction thereof, and the guide rail is provided on the doffing truck to support one side of the winding device. A driven wheel that rolls on the top of the doffing truck is provided, and a jack tire is provided that supports the other side so that it can be raised and lowered and rolls on the running road surface by driving force, and the distance between the upper part of the doffing truck and the winding device is kept constant. A controller is provided to detect the distance and raise and lower the above-mentioned jack tires in order to maintain the distance.

[Operation] The doffing truck runs by rolling the wheels on one side on the rail and the jacked tires on the other side on the floor. Therefore, one rail is sufficient and does not interfere with floor work such as threading.

Further, the attitude of the doffing truck is controlled to maintain a constant distance from the winding device by raising and lowering the jack tires.

[Example] An example of the present invention will be described below in detail based on the accompanying drawings.

As shown in FIG. 1, a long first heater 2 is provided upright on one side of the work space 1, and a plurality of winding devices 3 are provided on the other side. Further, a creel 4 supporting a large number of yarn supply packages P1 is located at the back of the first heater 2, and a second heater 5 is installed at the back of the winding device 3. A yarn cooling plate 6 and a false twisting device 8 are arranged in this order in the upper part of the work space 1.
Furthermore, feed rollers 9, 10, and 11 are arranged below the first heater 2 and above and below the second heater 5, respectively. The yarn Y pulled out from the yarn supply package P1 passes through the first feed roller 9, passes through the first heater 2 from bottom to top, travels diagonally downward along the yarn cooling plate 6, and is introduced into the false twisting device 8. . The yarn Y leaving the false twisting device 8 is bent downward by the guide pin 14 and passed through the second feed roller 10 to the second heater 5.
After descending inside, it passes through the third feed roller 11 and is wound up by the winding device 3 to form a wound package P2. The winding device 3 is provided with a total of 12 units, 3 stages up and down and 4 rows in the longitudinal direction of the paper, and includes a cradle arm 16 that supports the winding package P2, and a friction roller 1 that rotationally drives the package P2.
Consists of 7 and other members.

A flat peg stand 20 is arranged in front of the first heater 2 in the work space 1 . The stand 20 has rollers 21 provided on its lower surface that are connected to the rails 2.
By sliding on the winding device 2, the winding device 3 can move in the front and back directions in the drawing. Also, the winding device 3 of the stander 20
A total of 12 pegs 23 are planted horizontally in three rows vertically and in four rows in the longitudinal direction of the paper on the surface facing the paper, with equal intervals vertically and longitudinally, and each peg 23 has an empty bobbin B attached to it. are inserted in each.

A plurality of the winding devices 3 and the peg stands 20 are arranged side by side and adjacent to each other, and a plurality of rows of these are provided.

Then, on each floor between the winding device 3 and the peg stand 20, a fully wound winding package P2 supported by the winding device 3 is doffed and an empty bobbin B supported by the peg stand 20 is placed. A running path 24 is formed on which a doffing truck 25 having a hand mechanism (not shown) that replaces the doffing truck 25 runs.

As shown in FIGS. 1 to 3, the doffing truck 25 has four auxiliary wheels 26 for running on the floor. A driven wheel 28 is provided on one side of the doffing truck 25 for rolling the doffing truck 25 while rolling on one guide rail 27 laid so that the wheel 26 floats above the surface of the running path 24. At the bottom of the truck on the opposite side of the driven wheels 28, there is a jack tire 2, which is a driving wheel that rolls on the floor surface on the side of the peg stand 20 and supports one side of the truck so that it can move up and down.
9 is provided. This jack tire 29 is made of a tire made of rubber or the like, and includes a rotation drive section (not shown) and a jack mechanism 30 for raising and lowering the truck. This jacking mechanism 30 rotates a screw shaft by driving a motor 31 to jack the tire 29.
It is designed to appear and reappear downward from the bottom of the trolley.

As shown in FIG. 3, the jack tire 29 is of a single-wheel design in which two wheels are mounted close to each other in order to efficiently rotate without slipping when turning. In addition, a triangular area 32 whose vertices are two driven wheels 28 and one jacked tire 29
The center of gravity G of the doffing truck 25 is set to be located within.

The doffing truck 25 is provided with a controller 33 for detecting the distance w between the upper part of the doffing truck 25 and the winding device 3 and raising and lowering the jack tires 29 in order to keep the distance w constant. In order to detect the distance w between the upper part of the doffing truck 25 and the winding device 3, the upper end of the surface of the doffing truck 25 facing the winding device 3 is provided with a sensor as shown in FIGS. As shown in FIG. It is provided so that it can swing freely. Above vertical axis 3
7 is rotatably supported at the upper end of the doffing truck 25 via a bearing 38, and a lever 39 is fixed to the other end of this vertical shaft 37, and the roller 35 of the detection arm 36 is attached to this lever 39. A tension spring 40 is attached to urge the reference rail 34 onto the reference rail 34. Furthermore, two limit switches 41 and 42 are attached to the upper end of the doffing truck 25 and are turned on and off by the lever 39. If w is the set value, only one limit switch 41 is turned on; otherwise,
That is, when the interval w exceeds the set value, both limit switches 41 and 42 are turned on, and when the interval w falls below the set value, both limit switches 41 and 42 are turned off.
The controller 33 is the limit switch 4
Motor 31 is activated by ON and OFF signals from 1 and 42.
is actuated to raise and lower the jack tires 29, thereby constantly maintaining the interval w at a set value.

In addition, 43 in FIGS. 4 and 5 is used to give a signal to cut the yarn fed from the creel 4 when a yarn winding failure occurs after the empty bobbin 13 is transferred to the winding device 3 by the doffing cart 25. The switches 44 provided at the bottom of the reference rail 34 are cylinders provided on the doffing truck 25 to turn on these switches 43. In FIG. 1, reference numeral 45 denotes a power supply line installed along the running direction of the doffing truck 25, and numeral 46 denotes a power receiving rod extending from the doffing truck 25 so as to come into sliding contact with the power supply line 45.

In the above configuration, the doffing truck 25 uses the driven wheels 28 on the guide rail 27 and the jacked tires 29 on the running road 24 surface to float the auxiliary wheels 26 above the running road 24 surface.
9 runs along the guide rail 27. If the surface of the running path 24 is uneven, for example, if there is a slope error of 10 mm between the road surface on the jacked tire side and the reference surface, the upper part of the doffing truck with a width of approximately 850 mm and a height of approximately 2200 mm will be The distance w between them will vary by approximately 30 mm, and the error in road surface inclination will be approximately three times greater at the top of the doffing truck. This hinders smooth operation when exchanging the full package P2 and the empty bobbin B in the winding device.

However, since the doffing truck 25 is provided with a controller 33 that detects the distance w between the upper part of the doffing truck 25 and the winding device 3 and raises and lowers the jacked tires 29 in order to keep it constant, even if the traveling road surface is sloped, Even if there is an error, the doffing cart 25 can be maintained in an appropriate posture relative to the winding device 3,
This proves the smooth exchange operation between the full package P2 and the empty bobbin B. Furthermore, since the thread cutting switch 43 and the cylinder 44 are in a proper positional relationship,
Operational reliability is improved. That is, in FIG. 2, since the upper part of the doffing truck 25 and the winding device 3 are separated, the roller 3 rolling on the reference rail 34
5, the detection arm 36 is rotated and extended toward the winding device 3 by the spring force of the tension spring 40, and the lever 39
turns on both limit switches 41 and 42. In response to this signal, the controller 33 extends the jack tires 29, raises the doffing truck 25 to the left, and brings the upper part of the doffing truck 25 and the winding device 3 closer together. This causes the detection arm 36 to release the tension spring 40.
When the doffing truck 25 is pushed toward the doffing truck 25 against the spring force of It becomes a posture.

[Effects of the invention] In summary, the present invention provides the following excellent effects.

(1) One guide rail on the floor is sufficient, so
Guide rails are easy to arrange and do not interfere with threading or maintenance, and there is no vibration or noise when the doffing cart runs.

(2) The attitude of the doffing truck is controlled by detecting the distance between the upper part of the doffing truck and the take-up device and raising and lowering the jack tires to maintain a constant distance. It is easy to maintain the carriage in the proper position relative to the winding device, and it ensures smooth exchange of full packages and empty bobbins on the winding device.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a schematic front view of the main parts, FIG. 3 is a schematic plan view taken along arrow A-A in FIG. Figure 4B
A sectional view taken along the arrow -B, and FIG. 6 is a front view showing the prior art. In the figure, 3 is a winding device, 20 is a peg stand, 2
5 is a doffing truck, 27 is a guide rail, 28 is a driven wheel, 29 is a jack tire, and 33 is a controller.

Claims (1)

[Scope of utility model registration request] In a doffing truck that passes between a winding device of a yarn false twisting machine and a peg stand opposite thereto to exchange a full package on the winding device and an empty bobbin on the peg stand, the winding device A guide rail is provided at the lower part of the doffing truck along the arrangement direction, and a driven wheel that rolls on the guide rail is provided to support one side of the doffing truck, and the other side is supported so as to be able to rise and fall, so that the doffing truck can move up and down. The doffing truck is provided with a jack tire that rolls by a driving force, and a controller is provided on the doffing truck to detect the distance and raise and lower the jack tire in order to maintain a constant distance between the upper part of the doffing truck and the winding device. A doffing truck attitude control device.