JPH057262Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is used in a spinning machine such as a spinning machine or a yarn twisting machine, and runs along the spindle row of the spinning machine, and is arranged below the full tube on the spindle and the spindle row. The present invention relates to a doffing machine that replaces an empty tube on a peg, and more particularly to a doffing machine that is configured to grasp a space with a front-opening type tube grasper having a pair of grasping arms.

BACKGROUND OF THE INVENTION A doffing machine that runs along the spindle row of a general spinning machine extracts a full tube from the spindle and inserts an empty tube on a peg located below the spindle row into the spindle. In recent years, in spinning machines, as shown in Japanese Patent Laid-Open No. 57-161133, for example, a peg conveyor is used that moves a conveyor (commonly known as a peg tray) in which pegs are planted below the spindle row along the machine base. A full tube processing device and an empty tube supply device are installed on the eight end side (or gear end side) of the spinning machine, and the peg conveyor is operated during operation of the spinning machine to fill the full tubes inserted into the pegs of the conveyor. The tube processing device extracts the empty pegs, and the empty tube feeding device inserts the empty tubes into the empty pegs. When the tubes are full, the operation of the spinning machine is stopped, and the full tubes on the spindle and the empty tubes on the pegs are transferred to the doffing machine. In recent years, pipe replacement operations and pipe transport have been automated. on the other hand,
In a doffing machine, a tube gripping tool for gripping an empty tube generally has a pair of gripping arms that are open at the front, and the gripping arms grip the outer periphery of the upper end of the empty tube on the peg. Conventional pipe gripping tools are, for example,
As shown in Publication No. 38059, a recess that fits the outer circumferential surface of the empty tube is provided in the gripping portion of the gripping arm, and the pair of gripping arms are rotated in opposite directions via gears, and the recess is used to open the space. I was trying to grasp it. In addition, the device shown in Japanese Patent Publication No. 58-58447 has rollers at the tips of a pair of gripping arms, and a fixed gripper is provided between the pair of gripping arms to grip an empty tube with three-point support. was. These tube gripping tools are installed on a donning bar that is movable up and down and back and forth in the doffing machine body, and the donning bar moves forward at the lowered position to move the tube gripping tool to the gripping position, and at that position, the tube gripping tool is moved downward from the spindle row. He was grasping the empty tube on top of the installed Petsugu.

Problems that the invention aims to solve However, the empty tube inserted into the peg of the conveyor is loosely fitted into the peg so that it can be inserted and removed, and the conveyor must be mounted with enough play to allow it to move on the peg conveyor. The empty tube may tilt in any direction due to the positioning of the peg, the attachment error of the peg to the conveyor, and the intrusion of dust from the wind lamp into the peg conveyor, and the upper end of the empty tube may not reach the standard gripping position. There were cases where an error of 10 mm or more occurred.
Therefore, with conventional tube gripping tools that grip the empty tube using the recessed portion of the gripping arm, if the empty tube is tilted in the opening/closing direction of the gripping arm, the empty tube can be gripped by self-centering movement; If the tube is tilted forward (toward the doffing machine) or backward (toward the spinning machine), and the upper end of the empty tube is 10 mm or more away from the normal gripping position, the empty tube may become improperly gripped. Also, with the three-point grip configuration, even if most of the empty tube that is tilted forward can be gripped,
If the fixed grip pushes the empty tube and tilts it backwards due to the forward movement of the donning bar, it will not return as it is, which will cause gripping defects. Sometimes, the empty tube was shaken and it took a while for it to come to rest. If the empty tube is not gripped due to gripping failure as described above, it will be impossible to continue the operation from then on, the operating rate of the doffing machine and spinning machine will decrease, and processing personnel will be required. Ta. Furthermore, if the grip is incomplete, the empty tube cannot be inserted into the spindle, resulting in damage to the antinode ring, separator, etc.

Means for solving the problem: A doffing bar is arranged on a doffing machine main body that can run along the spindle row of a spinning machine so that it can move up and down and back and forth, and the doing bar is provided with a plurality of tube gripping devices each having a pair of gripping arms, and the doing bar advances from a lowered position to move the tube gripping devices to a gripping position to grip an empty tube on a peg arranged below the spindle row. In this doffing machine, a front push member is provided on the front of the doing bar to push backward the forward-inclined empty tube inserted into the peg, and engaging pieces are attached to both side ends of the doing bar. A swinging body biased by a spring so as to swing toward the doing bar is opposed to the engaging pieces and journalled on the doffing machine main body, and a rear push member is provided on the swinging body to push the backward-inclined empty tube forward, and when the doing bar advances to the empty tube gripping position, the front push member and rear push member correct the position of the empty tube on the peg.

Function When the doffing machine running along the spindle row of the spinning machine stops at a predetermined position corresponding to the spindle and moves forward with the donning bar in the lowered position, the engaging pieces on both ends of the donning bar engage the rocking body of the doffing machine body. When they come into contact with each other, the rocking body swings backward (towards the spinning machine) against the biasing force of the spring, and as a result, the backing member begins to move. Furthermore, if the empty tube on the peg is tilted forward (towards the doffing machine) as the donning bar moves forward, the forward pushing member of the donning bar will come into contact with the empty tube and push it backward, and if the empty tube is If the tube is tilted backwards, the pushing member comes into contact with the empty tube and pushes it forward to correct the posture. When the donning bar reaches the forward end and the tube gripping tool reaches the gripping position, it tilts back and forth. The empty tube, which had been previously held, is erected almost vertically by the front pushing member and the rear pushing member, and as a result, the upper part of the empty tube is positioned at the normal gripping position, and the pair of gripping arms can hold the empty tube without causing gripping defects. The tube can be gripped securely.

Embodiment In FIGS. 3 and 4, 1 is a doffing machine, and a pair of guide rollers 5 and a pair of floor wheels 7 are attached to the doffing machine main body 2, and a guide rail 4 is fixed to the spindle rail 3 of the spinning machine. The pipe travels along the same line and stops every predetermined number of spindles 8 (for example, 12) to change the pipe. A peg conveyor 10 is arranged below the eight rows of spindles as shown in FIG. The PETSUG conveyor 10 is made by Tokukai Sho.
As shown in Publication No. 57-161133, Pezgu 1
The peg tray 11 with the pegs 1a planted thereon is configured to move intermittently. An empty tube 12 is inserted into the peg 11a of the peg tray 11 by an empty tube feeding device (not shown) attached to the spinning machine. As shown in Japanese Patent Publication No. 56-8136, for example, a doffing bar 14 and a donning bar 15 are disposed on the doffing machine body 2 so as to be movable up and down and back and forth, respectively.
A plurality of tube grippers 16 and 17 (12 in this embodiment) are disposed on the tube gripper 15 so as to have substantially the same spacing as the spacing between the pegs 11a of the peg trays 11 adjacent to each other. The donning bar 15 moves forward from the lowered position in the figure as shown by the arrow in FIG.
is moved to the gripping position, and the tube gripper 17 is moved to the gripping position.
grip the upper outer periphery of the empty tube 12 and pull out the empty tube 12 from the peg 11a of the peg tray 11,
Then, the empty tube 12 is inserted into the spindle 8 by performing backward, upward, and forward motions. On the other hand, the doffing bar 14 operates substantially in the opposite direction to that described above to insert the full tube on the spindle onto the peg tray 11. Note that these operations are performed in parallel. The donning bar 15 has swing arms 18, 1 as shown in FIG.
It is composed of a donning bar main body 20 and a tube gripping tool 17 supported by a donning bar 9 so as to be movable back and forth.
A gripping bracket 21 of the tube gripper 17 is fixed to the lower part of the donning bar body 20. A support frame 23 is attached to the front end of the gripping bracket 21 with attachment bolts 24, as also shown in FIG. As shown in FIG. 5, a pair of front-open type gripping arms 25 and 26 are rotatably attached to the lower surface of the support frame 23, and gripping claws 27 and 28 are fixed to their tips. As disclosed in Japanese Utility Model Publication No. 56-38059, the pair of gripping arms 25 and 26 are comprised of sector gears 29 and 30, an operating arm 31, and a cylinder 32 connected to the operating arm 31 and equipped with a one-sided rod-shaped piston. It is designed to open and close at predetermined timing. A pair of gripping arms 25, 2
A front pushing member 33 is attached to the front surface of the support frame 23 between the support frames 23 and 6. In this embodiment, the forward pushing member 33 is constructed by screwing a screw shaft 33a between the pair of gripping arms 25 and 26 and fixing it with a nut 33b.
As shown in FIG.
The amount of protrusion is adjusted so that it just contacts the outer circumferential surface of the empty tube 12 on the donning bar 15 side when it is erected perpendicularly to 1a. Although the forward pushing member 33 is set so as to come into contact with the space 12 when the tube gripping tool 17 moves to the gripping position, it may also be set so as to be located near the contact point, for example, as shown in FIG. A front pushing member 33 is integrally provided to protrude from the sector gear side ends of the gripping claws 27 and 28 shown in FIG.
Further, a plate material or the like may be provided on the front surface of the donning bar 15 over almost the entire length. As shown in FIG. 2, the support frame 23 at both ends of the donning bar 15 has a protrusion 62 protruding from the center of the engagement piece 62.
a is fixed by a mounting bolt 63. As shown in FIG. 1, an engagement roller 65 is rotatably supported by a shaft 64 on the upper part of the engagement piece 62. As shown in FIG. In this embodiment, the engagement roller 65 is provided above the engagement piece 62, but the engagement piece 62 alone may act without providing a roller.

Next, in FIG. 3, on the front side of the doffing machine main body 2, an empty tube attitude correction device 40, which is constructed with an engaging piece 62 at a position corresponding to the engaging piece 62 of the donning bar 15 in the lowered position, is symmetrically installed. It is attached. Hereinafter, one side of the correction device 40 will be explained.
Reference numeral 43 denotes a bracket attached to the doffing machine main body 2 by bolts 44, and on its upper surface 43a are bearings 45, 4 rising upward as shown in FIGS. 1 and 2.
6 is fixed, and a shaft 48 is attached to these bearings 45 and 46.
is rotatably mounted. A flange piece 49 is integrally formed at one end of the shaft 48, and a thin plate-shaped rocking body 50 is welded to the flange piece 49 at one end.
A torsion coil spring 52 is interposed on the shaft 48, one end of which is latched to the notch 43d of the upper surface 43a, and the other end is latched to a valley 50a formed in the oscillating body 50, so that the oscillating body 50 A stopper 53 attached counterclockwise in FIG.
0 faces the engagement roller 65 of the engagement piece 62. The rocking body 50 has a gentle chevron-shaped cam surface 50b with which the engagement roller 65 of the engagement piece 62 engages. A mounting plate 56 is fixed to the upper end surface of the rocking body 50, and a substantially U-shaped leaf spring 57 is attached to the mounting plate 56.
One end thereof is fixed by a mounting bolt 58. The other end of the leaf spring 57 is adjusted in position by coming into contact with an adjustment bolt 59 attached to the mounting plate 56, and a boss 61 is wound around and fixed to the tip 57a. Both ends of a round bar-shaped backing member 60 having substantially the entire length of the donning bar 15 are attached to this boss 61 . This support member 60 is an empty pipe when the swinging body 50 is swung from the solid line position to the imaginary line position in FIG. In other words, from the retracted position C to the working position A,
It is attached so that it draws a trajectory that approaches the spinning machine from the spinning machine side. In this embodiment, the pushing member 60 is set to just come into contact with the empty tube 12 when it reaches the operating position A, but it may be set so that it is moved close to the point of contact.

Next, the effect will be explained.

When the doffing machine 1 is stopped at a predetermined position corresponding to the spindle 8 of the spinning machine, a tube changing operation is started, and the donning bar 15 is advanced from the position shown by the solid line in FIG.
As the donning bar 15 moves forward, the engagement roller 65 comes into contact with the cam surface 50b of the rocking body 50, and thereafter, as the donning bar 15 moves forward, the engagement roller 65 contacts the cam surface 50b.
0b, the rocking body 50 is rotated against the elastic force of the torsion coil spring 52, and the backing member 60 is moved from the retracted position C toward the operating position A.
On the other hand, as the donning bar 15 moves forward, the forward pushing member 33 approaches the empty tube 12 inserted into the peg 11a, and if there is an empty tube 12 tilted forward toward the doffing machine 1, Then, it comes into contact with the upper part of the empty tube 12 and is pushed up toward the spinning machine by the forward movement of the donning bar 15. On the other hand, the backing member 60 approaches the empty tube 12 from the spinning machine side through position B, and if there is an empty tube 12 tilted backward toward the spinning machine, it will come into contact with the upper part of that empty tube 12. This is pushed up towards the doffing machine 1 side. When the donning bar 15 reaches the forward end and the tube gripping tool 17 reaches the gripping position, the rocking body 50 is rotated to the imaginary line position in the figure, the rear pushing member 60 reaches the operating position A, and the front pressing member 33 and The backing member 60 comes into contact with the empty tube 12 almost simultaneously, and the attitude of the empty tube 12 is corrected to be perpendicular to the peg 11a.
Thereafter, the pair of gripping arms 25 and 26 are closed, and the empty tube 12 is reliably gripped by the gripping claws 27 and 28 thereof. In addition, if the empty tube 12 is the spindle 8 of a spinning machine,
It is inclined in a direction parallel to the plane of the paper, that is, a direction perpendicular to the plane of the paper in FIG. Further, the backing member 60 is the donning bar 1
5 may be moved to the operating position A after reaching the forward end. Furthermore, if the pushing member 60 is moved to the operating position A before the donning bar 15 reaches the forward end, the gripping operation can be started immediately after the donning bar 15 reaches the forward end, and therefore the pipe change time can be reduced. It is more preferable because it can be shortened.
The donning bar 15 that grips the empty tube 12 rises to remove the empty tube 12 from the peg 11a, and as it rises, the engaging piece 62 is lifted and the oscillator 5
0 is rotated in the return direction by the torsion coil spring 52 while the cam surface 50b is in contact with the engagement roller 65, and when the cam surface 50b and the engagement roller 65 are disengaged, the rocking body 50 returns to its original position. will be reinstated. The engaging piece 62 of the donning bar 15 is raised to a position A shown by a phantom line in FIG. 1, and then retreated to a position B shown by a phantom line. Donning bar 15 retreated
is raised to near the height of the spindle 8, and the empty tube 12 is inserted into the spindle 8.

Effects of the invention As described above, in the empty tube posture correcting device of the present invention, a forward pushing member is provided on the front surface of the donning bar, an engaging piece is attached, the rocking body is pivotally supported on the doffing machine body, and the rocking body is pivoted on the doffing machine body. A rear pushing member is provided on the moving body, and the rocking body is swung by the engagement of the engagement piece as the donning bar moves forward, and the front pushing member and the rear pushing member correct the empty tube posture on the peg. Even when the tube is tilted in the front-back direction, the empty tube can be pushed up by the front pushing member and the rear pushing member to be established almost vertically, and as a result, the empty tube can be reliably gripped without causing gripping defects. This makes doffing work more reliable. Further, since the correction device is operated using the movement of the donning bar, the structure can be simplified and it can be attached at low cost.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is its front view, Figure 3 is the front view of the doffing machine, and Figure 4 is the front view of the doffing machine.
The figure is a side view thereof, and FIG. 5 is a plan view of the main part of the gripping arm. 1... Doffing machine, 2... Doffing machine body, 8... Spindle, 11a... Pezugu, 12... Empty tube, 15
... Donning bar, 17 ... Tube gripping tool, 25,2
6...Pair of gripping arms, 33...Forward pushing member, 40...
...Correction device, 50... Rocking body, 52... Torsion coil spring, 60... Backing member, 62... Engagement piece.

Claims (1)

[Scope of utility model registration request] A donning bar is arranged on the main body of the Tamaba machine, which can run along the spindle row of the spinning machine, so that it can move up and down and back and forth, and the donning bar is provided with a plurality of tube gripping tools each having a pair of gripping arms, so that the donning bar moves forward in the lowered position. In the Tamaba machine, the tube gripper is moved to the gripping position and grips the empty tube on the peg located below the spindle row. A front pushing member for pushing the tube backward is provided, engaging pieces are attached to both ends of the donning bar, and a rocking body biased by a spring is opposed to the engaging pieces so as to swing in the direction of the donning bar. A pusher member is attached to the main body, and the swinging body is equipped with a pusher member that pushes the empty tube forward at a backward angle.When the donning bar moves forward to the empty tube gripping position, the forward pusher member and the backer member correct the empty tube posture on the peg. A correction device for empty tube attitude in a Tamaba machine.