JP2707824B2 - Method of judging the necessity of creel feeding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION The present invention relates to a creel feeder for automatically judging a yarn feed change time when a yarn feed change to a creel of a draw false twisting machine or the like is automated. The present invention relates to a method for determining the necessity of yarn.

[Conventional technology]

In the draw false twisting machine, cost reduction by labor saving,
Automation has been promoted to meet demands for centralized management by computers and protection of package surfaces. Conventionally, as a typical example of this automation system, there is known a system in which the processing of a full package after processing is performed by a combination of a doffing truck and a peg circulation conveyor. Hereinafter, the automated system for the full package will be described.

First, the equipment configuration of the drawing false twisting machine and its automated equipment will be described. In FIG. 9, a yarn 52 fed from a yarn supply 51 in a creel 50 is maintained at a yarn tension capable of being stretched by a first feed roller 53 and a second feed roller 54. On the downstream side between these two sets of feed rollers 53 and 54, a false twisting device 55 is provided, and a yarn 52 upstream of the false twisting device 55 is provided.
Is in a twisted state. Further, a primary heater 56 for heat fixing is provided on the upstream side between these two sets of feed rollers 53 and 54, and heats the twisted yarn 52 to the drawing temperature. Further, a third feed roller 57 is provided downstream of the second feed roller 54, and a secondary heater 58 is provided between these two sets of feed rollers 54, 57, and performs a re-heat treatment as necessary. The yarn 52 after the reheat treatment is finished into a full tube 60 by a take-up winder 59. In the following stretch false twisting machine, a primary heater 56 is separately arranged and opposed to a main body 61 after the false twisting device 55, and a passage 62 is provided therebetween so that a doffing truck 63 can travel. A peg circulation conveyor 64 is arranged around the primary heater 56. The doffing truck 63 transfers the full package 60 in the main body 61 to the peg 65, and
It has a function of holding the bobbin at the bobbin portion and taking it up from the take-up winder, turning the package by 90 °, moving the package to a position facing the peg 65, and pushing the full tube 60 toward the peg 65.

Next, the above-described automation device operates as follows. In FIG. 8, reference numeral 66 denotes a primary heater block formed of one block with 12 weights; 67, a main body block formed of one block with 12 weights; 68, a control end; and 69, a drive end. First, as shown in the upper half of FIG. 8, the doffing truck 63 travels (operates) in the passage 62, doffs each block, and the full tubes 60 are sequentially transferred to the pegs 65. . Then, the full package 60 is transferred to the peg 65, and the peg 65
When the state of holding the full tube 60 is reached, the operation of the first stage is completed. Next, as shown in the lower half of FIG.
The peg circulation conveyor 64 is driven for a while and starts to rotate clockwise (operation). At the drive end side end 64A of the peg circulation conveyor 64, the full tube 60 held by the peg 65 is
With a pusher, and peg 70A on the side of peg stand 70
Transfer to (operation). Next, when these transfer operations are completed, all the pegs 65 of the peg circulation conveyor 64 are located between the primary heater block 66 and the creel 50.
Then, the peg circulation conveyor 64 is driven by a half turn and returns to the state shown in the upper half of FIG.

However, the automated systems described above were for full packages, and replacement of yarn feed for creels 50 still relied on availability. This is due to the configuration of the creel 50. The creel side view of FIG. 9 and FIG.
As shown in the creel top view in the figure, the creel 50 is a four-stage rotary type, and each of the hexes has a hex
40 to 45 are provided. And pegs 40,41, pegs 42,
43, pegs 44, 45 are paired, one peg 41, 43, 4
The unwound yarn supply 46 is inserted into 5 and the spare yarn supply 47 is inserted into the other pegs 40, 42, 44. Also, the yarn supply 46 during unwinding is performed.
Is connected to the spare yarn supply 47, and when the unwound yarn supply 46 becomes empty, the tail is switched to the spare yarn supply 47. Therefore, after switching, it is necessary to insert a new spare yarn supply 47. Further, when the yarn supply 46 being unwound in the pegs 43, 45 other than the front surface becomes empty, it is necessary to rotate the creel 50 counterclockwise or clockwise by 120 °. As described above, since the operator needs to perform a complicated operation of rotating the creel 50 while checking the consumption state of the yarn supply of the creel 50, it has been conventionally difficult to automate the yarn supply.

[Problems to be solved by the invention]

In the draw false twisting machine and the like described in the related art, since the full filling discharge is automated, since it relies on the supply of yarn, the movement of the entire draw false twisting machine is in the middle and there is a limit. Had problems. In order to automate yarn supply, first, it is necessary to automatically determine whether or not yarn supply is necessary.
Second, it requires a mechanism to automatically rotate the creel. The present invention has been made to address the first problem, and an object of the present invention is to provide a yarn feeding necessity determination method for automatically determining the necessity of yarn feeding in a creel. Things.

[Means for solving the problem]

In order to achieve the above object, a method for judging yarn supply of a creel according to the present invention is directed to a yarn feeder capable of traveling along a creel having a pair of left and right pegs into which a yarn being unwound and a spare yarn are inserted. A bogie is arranged, and a sensor for measuring the winding diameters of the pair of left and right yarns at at least two points is provided on the yarn feeding bogie. Is determined.

[Action]

By a sensor that measures the winding diameter of a pair of left and right yarn supply at at least two points, full or half ball or empty is distinguished for each of the left and right yarn supply, and if it is a combination of half ball and empty, replacement is necessary, If it is a full ball and a half ball (or a small ball), it is determined that the exchange is unnecessary.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2 are diagrams showing the arrangement of equipment for judging the necessity of yarn supply and its procedure, and FIG. 3 is a diagram showing an example of a combination of judgment contents.

In FIG. 1, the yarn feeder 1 is arranged along the row of the creels 50.
Are arranged to be able to travel back and forth. A sensor 2, such as a photoelectric sensor, at a predetermined height and at a predetermined distance,
3 are installed (see Fig. 2). Since the yarn feeder 1 can travel freely, after measuring the right peg 40 and then traveling the distance L1, the left peg 41 can be measured. In addition, as shown in FIG. 9, the creels 50 have four stages, so that the combination of the sensors 2 and 3 is installed in four stages. Next, Creel 50
Mirrors 4 to 6 are mounted at positions on the back side crossing the pegs 40 to 45, respectively. Mirror 4 is for pegs 40 and 45, mirror 5 is for pegs 41 and 42, and mirror 6 is for pegs 43 and 44.

In FIG. 2, it is assumed that an empty bobbin 7 is inserted into the right peg 40, and a full yarn supply 8 is inserted into the left peg 41. The sensor 2 is located at a position where the height from the center of the pegs 40, 41 is H1, and measures a little inside the outer diameter of the yarn supply 11 that is just full. The sensor 3 is located at a position H2 from the center of the pegs 40, 41, and measures just above the empty bobbin outer diameter. That is, if both sensors 2 and 3 are ON-ON, it can be determined that the ball is full, and both sensors 2 and 3 are OFF.
If it is -OFF, it can be determined that it is empty.
If it is ON, it can be determined that it is an intermediate half ball. Note that the number of sensors is not limited to two, but may be three or more for more precise determination.

FIG. 3 shows a normal combination of determinations. No replacement is required if the combination is full and half balls, as in Nos. 1 and 4. If it is a combination of full balls and small balls, as in Nos. 2 and 5, replacement is required soon. If it is a combination of half ball and sky like .3 and 6, replacement is necessary. Then, the peg to be replaced is specified based on which of the left and right is empty. There are various operations of the yarn feeding robot 1 based on this determination. For example, when it is determined that replacement is necessary, the yarn feeding robot 1 starts a replacement operation. When it is determined that replacement is needed soon, the yarn feeding robot 1 moves to the next creel 50. When it is determined that the creel 50 does not need to be replaced, some creels 50 are rotated by 120 °.

In any case, the other surface b other than the surface a in front of the creel 50,
To measure c, rotate creel 50 counterclockwise 120 °
It must be rotated clockwise (for surface b) or 120 ° (for surface c). A rotating device for that will be described with reference to FIG. Pin 13 on top plate 12 around central axis 11 of creel 50
a to 13i are erected. When pin 13a comes to you, face c
Can be measured, and when the pin 13i comes to the front, the surface b can be measured. The yarn feeder 1 is provided with a gear 14 that meshes with these pins 13a to 13i. The gear 14 is mounted so as to be able to move up and down. When the gear 14 is raised, the engagement with the pins 13a to 13i is released, and when the gear 14 is lowered, the gear 14 meshes with the pins 13a to 13i. The yarn feeder 1 is provided with a rotation drive device for the gear 14, and can measure any of the surfaces a, b, and c.
Therefore, it is possible to measure the three surfaces of the creel 50 and move to the next creel 50, or to rotate the creel 50 periodically.

FIG. 5 is a view showing a yarn feed exchange operation of the yarn feed cart. First, the peg 40 is turned in the direction, and the empty bobbin 7 is extracted. Next, the chuck hand 20 pivots in the direction, and inserts the yarn supply 8 into the peg 40. Next, simultaneously with turning the peg 40 in the direction, the chuck hand 20 turns in the direction. Next, the tail 48 of the yarn supply 46 being unwound is connected to the yarn supply 8.

6 and 7 are views showing a yarn feeding system using the yarn feeding cart 1 described above. FIG. 6 is a plan view, and FIG. 7 is a side view. The yarn supply 8 conveyed by the overhead conveyor 21 is removed from the hanger 21a by the elevating device 22. The elevating device 22 turns the direction of the yarn supply 8 by 90 ° when descending.
It is designed to rotate. The yarn feeder 8 lowered to the lower end is pushed out by a pusher and transferred to the yarn feeder truck 1.
Then, the yarn carrier 1 runs toward the predetermined creel 50. The empty bobbin can be brought back by the yarn carrier 1 and transported by the overhead conveyor 21. Also,
An empty bobbin can be directly thrown into the receiving box directly from the yarn feeding cart 1.

In the above description, an automatic yarn feeding system in a draw false twisting machine has been described. However, the present invention can also be applied to an automatic yarn feeding system in an air processing machine. In addition, the creel is not limited to the rotary type, but may be a fixed creel device as long as the creel has a pair of left and right pegs into which the unwound yarn and the spare yarn are inserted. .

〔The invention's effect〕

The creel yarn feeding determination method according to the present invention includes disposing a yarn feeding truck that can travel along a creel having a pair of left and right pegs into which a yarn being unwound and a spare yarn are inserted. A sensor for measuring the winding diameters of the pair of left and right yarns at at least two points is provided on a bogie, and necessity of yarn supply is determined based on a combination of the winding diameters of the left and right yarns determined from signals from the sensors. Yes, a sensor that measures the winding diameter of a pair of left and right yarns at at least two points is used to distinguish between full and half balls or empty for each of the left and right yarns. Yes, if it is a full ball and a half ball (or a small ball), it is determined that the replacement is not necessary. Therefore, it is possible to automatically determine whether or not the yarn supply, which is a premise of the automatic yarn supply, is necessary. When the yarn supply is automated, full automation of the drawing false twisting machine and the like is achieved along with automation of the full filling, so that significant labor saving and complete management of the computer can be achieved.

[Brief description of the drawings]

FIG. 1 and FIG. 2 are diagrams showing the arrangement of equipment for judging the necessity of yarn supply and its procedure, FIG. 3 is a diagram showing an example of a combination of judgment contents, FIG. 4 is a diagram showing a creel rotating device, FIG. 5 is a view showing a yarn feed exchange operation of the yarn feeder, FIG. 6 is a plan view showing the yarn feed system, FIG. 7 is a side view showing the yarn feed system,
FIG. 8 is a view showing a conventional automation system in a draw false twister, and FIG. 9 is a view showing a device arrangement and a creel of the draw false twister. 1 ... Yarn supply cart, 2, 3 ... Sensor, 40-45 ... Peg, 46
…… Yarn feeding during unwinding, 47 …… Spare yarn feeding, 50 …… Creel.

Claims (1)

(57) [Claims] 1. A yarn carrier having a pair of left and right pegs into which unwound yarn and a spare yarn are inserted is provided. A sensor for measuring the winding diameter of the yarn supply at at least two points, and determining whether or not the yarn needs to be supplied based on a combination of the winding diameters of the left and right yarns determined from the signals of the sensors. Method for determining the necessity of yarn.