JPH0524250B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention uses a yarn false-twisting machine that false-twists melt-spun filament yarn to doff the processed and wound package. It relates to a device for.

[Conventional technology]

The above-mentioned yarn false twisting machine is usually capable of false twisting a plurality of yarns at the same time, and therefore has a plurality of winding devices for winding the yarns. These winding devices are arranged in multiple rows vertically and horizontally on one side of the yarn false twisting machine.
Usually there are 2 to 4 levels above and below. In this way, each winding device has a different height position and is placed close to each other, so when attempting to manually doff the package cage wound up by the winding device, there is some danger to be avoided. I can't. Furthermore, a fully rolled package weighs several kilograms, making it quite hard work. For this reason, many methods and devices for automatically doffing the package have been proposed.

[Problem that the invention seeks to solve]

When doffing such a wound yarn package from a winding position to another transport position, the package removed from the cradle arm is rolled over a guide plate having a certain slope and distance using the package's own weight. When moving the yarn, the first problem is that the surface of the yarn layer may be damaged due to rolling, and the second problem is that the final position of the package becomes unstable due to rolling, which may lead to doffing. After completing a series of operations, the positions of the doffing packages will be uneven, and there is a risk that interference with other members may occur during conveyance in configuring an automatic conveyance system.

[Means for solving problems]

The present invention provides a yarn false twisting machine having a plurality of winding devices with a stand having pegs for supporting the package at a position facing the winding devices, and a doffing cart running between the stand and the winding devices. The doffing cart is equipped with a full package support arm that supports the fully wound package at the winding position and transfers it to the peg position of the stand, so that the fully wound package does not roll and is actively moved. The purpose of the present invention is to provide a doffing device that can perform the doffing operation reliably and without the risk of damaging the yarn layer by performing the transfer.

〔Example〕

FIG. 1 shows a side view of the yarn false twister. A long first heater 2 is provided upright on one side of the working 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 feeding packages P1 is arranged at the back of the first heater 2, and a second heater 5 is arranged at the back of the winding device 3. A yarn cooling plate 6, a yarn guide device 7, and a false twisting device 8 are arranged in this order above the work space 1, and feed rollers 9, 10, 11 are provided below the first heater 2 and above and below the second heater 5, respectively. will be arranged.
The yarn Y taken out from the yarn feeding package P1 passes through the first feed roller 9, passes through the first heater 2 from bottom to top, and diagonally downwards along the rear yarn cooling plate 6 bent by guide pins 12 and 13. The yarn travels and is further introduced into a false twisting device 8 via a yarn guide device 7 .
The yarn Y leaving the false twisting device 8 is bent downward by the guide pin 14, passes through the second feed roller 10, descends in the second heater 5, passes through the third feed roller 11 and yarn guide 15, and is wound by the winding device 3. Taken,
It is formed as a winding package P2. The winding device 3 is provided with 12 units in total, three stages up and down and four rows in the front-rear direction in the plane of the paper, and includes a cradle arm 16 that supports the winding package P2, a friction roller 17 that rotationally drives the package P2, and a thread Y. It is composed of a thread guide 18 for guiding and other members. 1
A suction pipe 9 is provided below the winding device and communicates with a blower (not shown).

A flat peg stand 20 is arranged in front of the first heater 2 in the work space 1 . The stand 20 has a roller 21 provided on its lower surface that slides on a rail 22 laid on the ground, so that the first
It is designed to be able to travel in the front and rear directions of the drawing surface.
Usually, it is fixed at a position facing the winding device 3 by a stopper (not shown). Also, the stand 2
A total of 12 pegs 23 are planted in the horizontal direction on the surface facing the winding device 3 of 0, in 3 rows up and down and 4 rows in the front and back direction of the paper, with equal intervals in the top and bottom and front and back. An empty bobbin B is inserted into each of the . Peg stand 20 and winding device 3
Another rail 24 is laid on the ground between the
A doffing cart 25 runs on the rail in the front-rear direction on the paper by rollers 26.

FIG. 2 is a schematic front view of the doffing truck 25 viewed from the peg stand 20 side. In the same figure, the doffing truck 25 has boxes 27 and 2 containing drive mechanisms on the left and right sides.
8, and various arms 31, 32, 33, 34 and a threading device 35, which will be described later, are provided between both boxes. 36 is a motor for driving the roller 26. Three of the above arms are provided on the upper and lower sides, and two types of arms 33 and 34 are rotatably provided on the left drive box 27. The other two types of arms 31 and 32 are arm support plates 3
fixed on 7 different surfaces. The plate 37 is rotatably supported by a slide frame 38,
The frame 38 runs along a guide bar 39 and a guide rail 40 fixed to the right drive box 28 in the front-rear direction in the plane of the second drawing.

FIG. 3 shows a drive mechanism for the bobbin supply arm 33 and the cradle operation arm 34 among the arms. Each bobbin supply arm 33 has a shaft 41
is pivotally supported in the drive box 27 by
pulley 42 and other pulleys 43, 4 provided in
A single endless belt 46 is wound around 4 and 45. The shaft of a motor 47 is directly connected to the pulley 45, and as the motor 47 is driven in forward and reverse directions, the bobbin supply arm 33 pivots as shown by an arrow 48. On the other hand, the cradle operating arm 34
drives the drive box 2 with a shaft 49 provided on the arm.
7 and fixed to the shaft 49;
is fitted into a fixed pin 52 on a slide rod 51 extending in the vertical direction. The rod 51 is supported by a support block 53 fixed to the drive box 27 in a vertically slidable manner, and a pin 54 provided at the lower end
is fitted with a lever 56 fixed to the shaft of the motor 55. Therefore, as the shaft of the motor 55 rotates forward and backward within a predetermined angle, the slide rod 51 moves up and down, and the cradle operating arm 34 pivots as shown by arrow 57.

Figures 4a and 4b show the bobbin supply arm 3.
3 shows the grip part. A U-shaped plate 61 is fixed to the tip of the arm 33, and two grippers 63, 63 are supported by a shaft 62 on the plate. A spring 64 is stretched between both grippers 63 and biases the grippers 63 in the closing direction. Also, the plate 61 has both grippers 6 at its tips.
A plate-shaped piece 65 located between the two grippers 63 is fixed, and an inclined surface 66 is formed inside the tips of both grippers 63. When the clippers 63 do not support the empty bobbin B, both grippers 63 receive a force in the closing direction due to the force of the spring 64, but since the inner parts of the grippers abut against the piece 65, both grippers 63
3 and 63 are kept slightly close to each other in the illustrated state. When the gripper 63 that does not support the empty bobbin is pressed against the outer peripheral surface of the empty bobbin B, the bobbin B presses the inclined surface 66 outward, so both grippers temporarily open, and then the bobbin B is moved between the grippers. and held as shown. Furthermore, if only bobbin B is pressed downward from this state,
Both grippers 63 are opened and the bobbin B is taken out.

FIG. 5 shows yet another drive mechanism for the cradle operating arm 34. As shown in FIG. The arm 34 is supported by the left drive box 27 via a shaft 49.
It is rotatably supported by a shaft 72 on a letter-shaped block 71. A slide pin 73 is inserted through the shaft 49, and one end of the pin 73 abuts against the base end of the cradle operating arm 34, and the other end abuts against a pivot block 74, which will be described below. The swing block 74 is supported by the left drive box 27 and is fixed to a swing rod 75 that extends parallel to the slide rod 51, that is, in the vertical direction. 76 is a motor provided in the box 27, and the motor 76
A cam 78 fixed to the shaft 77 of the cam 78 abuts a cam follower 80 on another pivot block 79 fixed to the pivot rod 75. Therefore, when the shaft 77 of the motor 76 rotates, the cam 78 and the cam follower 80 come into contact with each other, causing the rotation block 79 to move toward the rotation rod 7.
Another turning block 74 fixed to the rod 75 turns and pushes the slide pin 73, and the pin 73 presses the base end of the cradle operating arm 34, so that the arm 34 is rotated. It rotates at a predetermined angle around the axis 72. 81 is a spring that presses the arm 34 against the slide pin 73, and 82 is a stopper that comes into contact with the arm 34 to restrict its posture.

The cradle arm 16 is rotatably supported by a shaft 85, and has a rotatable bobbin holder 86 for supporting the bobbin B. One arm 16a is rotatably supported by the arm body 16b by a shaft 87, and a downwardly bent L-shaped locking tool 88 is provided at the tip of the arm 16a. Therefore, when the tip of the cradle operating arm 34 is engaged with the locking tool 88, the arm 3
4 rotates as described above, the cradle arm 1
One arm 16a of 6 is centered on the axis 87.
Open outward as shown by the dotted chain line to release the supported bobbin B.

FIG. 6 shows the side surface of the cradle operating arm 34 from a direction opposite to that shown in FIG. The arm 34
Two plates 91 and 92 are provided at a distance from each other at the tip of the plate.
is fixed to the arm 34, and the other plate 92 is slidably supported by fitting a bolt 94 fixed to the arm 34 into a long hole 93 formed in the plate. The fixed plate 91 has a distal end that protrudes longer than the other movable plate 92, and an inclined surface 95 is formed on the upper surface of the distal end of the movable plate 92. A spring 96 is stretched between the main body of the cradle operating arm and the movable plate 92, and urges the plate 92 in a direction in which its tip protrudes. The broken line 34a shows the posture of the cradle operating arm 34 when it is not in operation, and the arm 34 pivots upward from this posture as described above. When the package P2 supported by the cradle arm 16 is fully wound, if the cradle operating arm 34 starts turning from the 34a position, when the cradle operating arm 34 turns to the 34b position shown by the dashed line, the inclined surface 95 of the movable plate 92 is the locking tool 88
The cradle arm 16 is thereby pulled up to a position 34c shown by a solid line.
At this time, the package P2 is the friction roller 1.
7, its rotation is stopped.

The cradle operating arm 34 is then moved to the solid line position 3.
4c, rotate toward the front of the paper in FIG. 6 as described above, and remove the package P from the cradle arm 16.
Release 2 and let it fall. Thereafter, an empty bobbin B is supplied to the cradle arm 16 by the bobbin supply arm 33 described above, and the bobbin B is supported by the cradle arm 16 by rotating the cradle operating arm 34 back toward the back side of the page. Furthermore, after this, the cradle operating arm 34 returns to the original position 34a, but in the middle
The empty bobbin B comes into contact with the friction roller 17 at the dotted chain line position 34d, and the cradle operating arm 34 separates from the locking tool 88. In addition, 34 above
At position b, the locking tool 88 comes into contact with the inclined surface 95 of the movable plate 92, but then the plate 92
slides in the direction of the shaft 49 against the force of the spring 96, so the locking tool 8
8 is located between both plates 91 and 92. Therefore, when the cradle operating arm 34 pivots downward, the movable plate 92 presses the locking tool 88, and the cradle arm 16 can be pushed down.

The structures of the package support arm 31 and bobbin support arm 32 are shown in FIGS. 2 and 5. The package support arm 31 consists of two arms 31a whose mutual interval is slightly shorter than the length of the bobbin B.
31a, and a recess 101 for supporting the bobbin B is formed in the upper part of each arm 31a. The structure of the grip portion of the bobbin support arm 32 is substantially the same as that of the bobbin supply arm 33 described above, so although it will not be described in detail, the gap between both grippers is 1.
02 is set to be sufficiently smaller than that of the bobbin supply arm 33, and the gripper opening 103
is set to face downward. Furthermore, when a bobbin B is placed in the recess 101 of the package support arm 31 and bobbin support arm 32 and another bobbin B is supported by the gripper, both bobbins B become parallel to each other, and the distance between the bobbins is set to the stand. The arm support plate 3 is arranged so that it is equal to the bobbin interval on the peg 23 adjacent to the
It is fixed at 7.

Next, the support mechanism of the arm support plate 37 will be explained with reference to FIGS. 7a and 7b.

The guide bar 39 and guide rail 40 are horizontally fixed to the inner surface of the right drive box 28, and the slide frame 38 is slidably supported by these. One guide rod 105 is rotatably supported in the vertical direction by two support blocks 106 and 107 on the frame 38, and two blocks 108 are fixed to the rod 105, and a screw is inserted between the two blocks 108. A rod 109 is rotatably supported parallel to the guide rod 105. Furthermore, guide rod 10
5 is provided with a lifting block 110 which is vertically slidable and is screwed into threaded engagement with the screw rod 109, and the arm support plate 37 is fixed to the block 110. Therefore, when the screw rod 109 rotates, the arm support plate 37 moves up and down together with the lifting block 110. More specifically, reference numeral 111 is a screw rod rotatably supported by the right drive box 28 so as to be parallel to the guide bar 39.
Pulley 112 and motor 113 fixed to the end of 1
The endless belt 1 is connected between the pulley 114 provided on the shaft of
15 is wrapped. Also, the slide frame 38
There is a block 116 that is screwed together with the screw rod 111.
A block 117 that slidably engages with the guide bar 39 is fixed, so that when the motor 113 is rotationally driven, the screw rod 111 rotates, and the slide frame 38 slides along the guide bar 39. do. Further, a gear 119 fixed to the shaft of a motor 118 provided on the slide frame 38 meshes with a gear 120 fixed to the upper end of the guide rod 105. When the motor 118 is rotationally driven, the guide rod 105 rotates together with the block 108, and the guide rod 105 rotates together with the block 108. As the screw rod 109 turns around the guide rod 105, it moves up and down, so the lifting block 110 also turns, and the arm support plate 37 fixed to the block 110 turns.

121 is a motor provided on the arm support plate 37, and a pulley 1 fixed to the shaft of the motor 121 is provided.
22 and the pulley 12 fixed on the upper end of the screw rod 109
An endless belt 124 is wound between the arm support plate 3 and the arm support plate 37, and when the motor 121 is driven to rotate, the screw rod 109 rotates, and the arm support plate 37 moves up and down together with the lift block 110. S1
-S4 are sensors provided on the upper side surface of the right drive box 28, and the position of the slide frame 38 is confirmed by each sensor S1-S4 detecting the piece 130 provided at the upper end of the slide frame. Further, S5 to S8 are sensors provided on the slide frame 38, and each sensor S5 to S8 is fixed to the arm support plate 37 and detects the disk 126 that is vertically slidably supported by the guide rod 105. The vertical position of the support plate 37 is confirmed. The disk 12
6 is formed into a fan shape in a plan view, so that even if the disk 126 rotates by a predetermined angle together with the arm support plate 37, the sensors S5 to S8 can detect the disk. Furthermore, S9 is a sensor provided at the upper part of the drive box 28, and by detecting the pieces 127 and 128 fixed to the gear 120 with their orientations changed by 90 degrees, the rotating position of the arm support plate 37 can be confirmed. It's summery.

The operations of the various mechanisms described above will be explained below in relation to each other.

When a doffing command is issued from the yarn false twister, the doffing cart 25 travels on the rail 24 and stops at a predetermined position. Here, it is assumed that empty bobbins B are all inserted into each peg 23 on the stand 20. In addition, there is a piece 1 on the ground in front of each peg 23.
31a to 131d are laid, and at the same time, as shown in FIG. A sensor S10 for detecting each of these pieces is mounted on the bobbin support arm 32 in FIG.
It is located below the . At the first stop position of the doffing truck 25, the sensor S10 detects the pieces 131a~
131d and when the count value of the detection signal reaches 5, that is, the sensor S10 detects the piece 13.
It is determined that the motor 36 is stopped at the time when 1a is detected. At the same time as the doffing truck 25 stops, the motor 113 is driven and the slide frame 38 moves in the direction of the arrow 135 in FIG. 7a.
The process stops when the fourth sensor S4 detects the piece 130. At this time, the bobbin support arm 32 is
It is located directly above the empty bobbin Ba in the figure.
Next, the motor 121 is driven to lower the arm support plate 37, and the eighth sensor S8 detects the disk 1.
It stops when 26 is detected. At this time, the bobbin support arm 32 is in a state where it grips the empty bobbin Ba on the peg 23 from above. Next, the motor 113
is driven and the slide frame 38 moves in the direction of the arrow 136.
This moves the empty bobbin Ba to peg 2.
3a, and the second sensor S2 is removed from piece 1.
It stops when 30 is detected. Then motor 1
21 is driven, and the arm support plate 37
The arm support plate 37 moves up until the sensor S6 detects the disk 126, and the motor 118 is driven to rotate the arm support plate 37 by 90 degrees until the ninth sensor S9 detects the piece 127. At the same time, the motor 47 is driven to rotate the bobbin supply arm 33 and stop when the gripper portion of the arm 33 reaches the upper part of the bobbin support arm 32. Next, the motor 55 is driven and the cradle operating arm 3
4 pivots upward, lifting the cradle arm 16 and separating the fully wound package P2 from the friction roller 17. Furthermore, the motor 113 is driven, and the slide frame 38 is connected to the first sensor S.
1 moves in the direction of arrow 136 until piece 130 is detected. At this time, the package support arm 31
enters the lower part of both ends of the bobbin of the package P2. Next, the motor 121 is driven and the arm support plate 37 is moved so that the fifth sensor S5 is connected to the disk 12.
It rises a little until it detects 6. As a result, both ends of the bobbin of the package P2 are positioned within the recess 101 of the package support arm 31. The state at this time is shown by the solid line in FIG. Then motor 7
6 is driven, the cradle operating arm 34 opens the cradle arm 16, and supports the package P2 on the recess 101 of the package support arm 31. Next, the motor 113 is driven to move the slide frame 38 in the direction of the arrow 135, and the third sensor S3 detects the piece 130 and stops. At this time, the bobbin support arm 32 and the bobbin supply arm 3
3 is shown by a solid line in FIG. 10, and the position of the package support arm 31 is shown by a two-dot chain line in FIG. Thereafter, the motor 47 is driven to rotate the bobbin supply arm 33 to receive the empty bobbin Ba supported by the bobbin support arm 32 from above and position the bobbin Ba between the cradle arms 16. FIG. 11 shows the state at this time. Next, the motor 76 is driven and the cradle operating arm 34 closes the cradle arm 16, so that the empty bobbin Ba is supported by the cradle arm 16. Next, the bobbin supply arm 33 pivots back to the original position shown in FIG. 2, the cradle operating arm 34 also pivots back to the position shown in FIG. 32 is also the 9th
The arm support plate 37 returns to its original position as shown by the dashed line in the figure, and the arm support plate 37 further descends to the position where the seventh sensor S7 detects the disk 126, whereby each arm 31, 32, 33, 34 Return to the state before starting the lifting operation. By the above operations, the three package cages P2a in the first row are doffed and the empty bobbin is
Supply of 3 Ba ends.

Thereafter, a threading operation is performed by the threading device 35, and then the doffing cart 25 moves the pieces 13 of the second row.
1b position, and the full package P2 on the package support arm 31 is discharged to the stand 20 and a new empty bobbin B is received from the stand 20 as described below. That is, first, the slide frame 38 is moved in the direction of the arrow 135 by the drive of the motor 113, and the fourth sensor S4 detects the piece 130 and stops. Both support arms 3
1 and 32 are parallel to each other, and the distance between the parts that can support both bobbins is set equal to the distance between the bobbins on the pegs 23 that are laterally adjacent to each other in the stand 20, and furthermore, the bobbin support arm 32 is connected to the package cage. Since it is provided above the support arm 31, both support arms 31,
The relationship between the peg 32 and the peg 23 is as shown in FIG. 12a. That is, the package support arm 31 inserts the center of the bobbin of the package P2a that it supports into the empty peg 23a in the first row, and the bobbin support arm 32
is peg 23 which has empty bobbin Bb in the second row.
It is located directly above b. Next, the motor 121 is driven and the arm support plate 37 is lowered until the eighth sensor S8 detects the disk 126. At this time, both support arms 31 and 32 are in positions as shown in FIG. 12b. That is, the fully wound package P2a supported by the package support arm 31 is placed on the empty first row of pegs 23a, and the arm 31 is lowered to a position below the package P2a. Further, the bobbin support arm 32 is in a state where it grips the second row bobbin Bb from above. Next, the motor 113 is driven to move the slide frame 3
8 moves in the direction of arrow 136 to a position where second sensor S2 detects piece 130. The subsequent operation of the doffing cart 25 is the same as that described above, and the fully wound package P2b is removed from the second row winding device 16.
and supported the empty bobbin Bb in its place.
, and perform the threading operation. That is, for the doffing operation of the first row of packages P2a, the doffing truck 25 starts by removing the first row of empty bobbins Ba from the stand 20, and after receiving the package P2a, supplies the empty bobbins Ba. Next, after the doffing cart 25 travels to the second piece 131b position, the supported package P2a is applied to the empty peg 23a of the first row, and at the same time, the empty bobbin Bb is transferred from the peg 23b of the second row. Receive. The doffing truck 25 repeatedly performs the above-mentioned operation, doffing all the packages P2a to P2d of the yarn false twisting machine, and supplying all the empty bobbins Ba to Bd. After supplying the package P2d of the row to the peg 23d of the fourth row, the vehicle travels to the original position and completes the entire doffing operation. At this stage, all full package packages P2a~P
2d moves onto each corresponding peg 23a to 23d,
Further, the empty bobbins Ba to Bd are transferred onto the corresponding winding machines and winding is restarted.

〔Effect of the invention〕

As described above, in the present invention, the fully wound package at the winding position is supported by the package support arm provided on the doffing cart, and the package is transferred to the peg of the stand as the arm moves. Therefore, the package will not roll under its own weight, and the surface of the yarn layer will not be damaged. Further, the package supported by the support arm is positively transferred by the movement of the arm, and the position at which the doffing of the package is completed is accurately fixed, thereby enabling subsequent automatic transfer.

[Brief explanation of drawings]

FIG. 1 is a side view of the yarn false twister, FIG. 2 is a front view of the doffing truck, FIG. 3 is a diagram showing the drive mechanisms of the bobbin supply arm 33 and the cradle operating arm 34, and FIGS. 4a and 4b. 5 shows the gripper portion of the bobbin supply arm 33, FIG. 5 shows the drive mechanism of the cradle operating arm 34, FIG. 6 shows the action of the arm 34, and FIGS. 7a and 7b show the arm. A diagram showing the drive mechanism of the support plate 37, FIG. 8 is a plan view for explaining the stop position of the doffing truck, FIG. 9 is a plan view for explaining the doffing operation, and FIGS. 10 and 11. 12 is a diagram for explaining the operation of supplying an empty bobbin to the winding device.
Figures a and 12b are diagrams for explaining the operation of supplying a package to the peg on the stand and receiving an empty bobbin. 16... Winding device, 20... Stand, 23... Peg, 25... Doffing truck, 31... Package support arm, 32... Bobbin support arm, 33... Bobbin supply arm, 34... Cradle operating arm, B... Bobbin, P... Packaging.

Claims (1)

[Claims] 1. A stand having pegs for supporting the package is provided at a position facing the winding device of a yarn false twisting machine having a plurality of winding devices, and a doffing cart is run between the stand and the winding device. A package doffing device for a yarn false twisting machine, characterized in that the doffing truck is provided with a full package support arm that supports the full package at the winding position and transfers it to the peg position of the stand. .