JPH0379452B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) This invention is particularly applicable to a ring twisting machine, a ring spinning machine, etc., for forming a winding package having a concave (concave curved surface) tapered part. Regarding the forming method.

(Prior art) An example of the prior art is Japanese Patent Publication No. 48-43967.

(Problems to be Solved by the Invention) In a package having a conical straight taper part formed by changing the lift length at a constant rate of change, reducing the taper angle of the taper part stabilizes the winding shape, but on the other hand, When the amount of yarn winding decreases and the taper angle of the taper section increases, the amount of yarn winding increases, but on the other hand, the shape of the yarn may be distorted at the taper section, or a bulge may occur at the tip of the tapered section, making the winding shape unstable. becomes.

Therefore, in order to increase the amount of yarn wound and stabilize the winding shape, the taper angle of the taper part is increased to increase or decrease the rate of change in lift length, and the taper part is made into a concave taper shape (concave curved surface shape). It is desirable to form.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for accurately and easily forming a package having a concave tapered portion.

(Means for Solving the Problems) The present invention provides a lift length value in each lift stroke that forms a package having an upper tapered part of a concave taper shape, so that the lift length of the ring gradually increases over time and the ring rises. The selected value of the concave coefficient and other winding shape data are input into the controller in advance so that the locus of the end position draws a concave curve, and the building motion is selected from among various building motion system programs stored in the controller. In addition to counting the pulse signals transmitted in synchronization with the movement of the ring, this count value is compared with the calculated lift length value to determine the ring movement direction for each lift. The gist of this is a method of forming a package that changes at the rising end for each stroke.

(Function) When forming a package cage with an upper tapered part in a concave taper shape, the lift length of the ring gradually increases over time, and the lift length value of the ring changes so that the locus of the rising end position of the ring draws a concave curve. In addition to inputting the selected value of the concave coefficient that defines the rate and other winding shape data into the controller in advance, a desired building motion method program is preliminarily selected from among the various building motion method programs stored in the controller. The lift length value for each lift stroke is calculated based on the winding shape data and the selected building motion method program, and the count value of the pulse signal transmitted in synchronization with the movement of the ring is calculated. , the timing of changing the moving direction of the ring at the rising end of each lift stroke is commanded by comparing the calculated lift length value, and each winding-shaped package having a concave taper-shaped upper tapered part is constructed in a different manner. Formed using the motion method.

(Example) Next, a first example of a device used in the present invention and a method of implementing the present invention using this device will be described.
This will be explained with reference to FIGS.

In a ring twisting machine, etc., in a building mechanism K installed at the end of the machine base to raise and lower the ring, an input shaft 1 is connected to a motor (not shown) by a belt 2.
The rotation of the input shaft 1 is connected to the first transmission shaft 5 through the gears 3 and 4, and is rotated in a fixed direction.
is transmitted to. An electromagnetic clutch 7 and a first worm gear 8 are fitted to the first transmission shaft 5, and a second transmission shaft 9, which is arranged in parallel on the side of the first transmission shaft 5, is fitted with an electromagnetic clutch 7 and a first worm gear 8. A second worm gear 12 is fitted into an electromagnetic brake 11 in which a gear 10 is attached side by side so as to mesh with a gear 6. Both transmission shafts 5, 9
A first worm wheel 1 meshed with a first worm gear 8 is attached to an intermediate shaft 13 rotatably supported below the
4 and a second worm wheel 15 meshed with the second worm gear 12 are respectively fitted via one clutch, and when the electromagnetic clutch 7 is demagnetized and the electromagnetic brake 11 is energized, the second transmission shaft 9 stops. The rotation of the first worm gear 8 is transmitted to the intermediate shaft 13 via the first worm wheel 14, while the electromagnetic clutch 7 is energized and the electromagnetic brake 1 is activated.
When the electromagnetic clutch 7 and the electromagnetic brake 11 are deenergized, the second transmission shaft 9 rotates and the rotation of the second worm gear 12 is transmitted to the intermediate shaft 13 via the second worm wheel 15. The rotational direction of the shaft 13 is switched, the intermediate shaft 13 is driven to rotate in forward and reverse directions, and the rotation of the intermediate shaft 13 is transmitted to the drive shaft 16 via a belt 19 hooked around pulleys 17 and 18. .

A lifting drum 23 connected via a belt 22 to a ring rail 21 to which a large number of rings 20 are attached is connected to a drum 24 fitted to a drive shaft 16, and a belt 25 connected to this drum 24 and a belt 25 connected to this drum 24. The ring rails 21 are connected to be rotatable in forward and reverse directions via a drive member 26 fixed to the belt 25, and the ring rail 21 is moved up and down in a reciprocating manner by the forward and reverse rotation of the drive shaft 16.

Detection shaft 27 rotatably supported below the drive shaft 16
The rotation of the drive shaft 16 is transmitted through a belt 30 hooked around the pulleys 28 and 29, and a reset lever 31 fitted to the detection shaft 27 has a detection switch installed so that its movement can be adjusted. 32 are arranged opposite to each other, and when the reset lever 31 rotates together with the detection shaft 27 and approaches the detection switch 32 during each downward stroke of the ring 20, the detection switch 32 is activated.
The contacts of the detection switch 32 are switched respectively.
Each lift stroke when the contact is switched,
That is, the ring lifting and lowering strokes are respectively completed.

A rotary encoder 33 is installed opposite the detection shaft 27 in order to transmit a pulse signal proportional to the ascending distance or the ascending/descending distance of the ring 20, and the input shaft of the encoder 33 is attached to the pulley 29 and the pulley 34. The rotation of the detection shaft 27 is transmitted through the belt 35 , which rotates the rotor of the encoder 33 in forward and reverse directions, and the pulse signal that the encoder 33 emits in synchronization with the movement of the ring 20 is transmitted to the controller 36 . .

The controller 36 has the total lift length l of the package and the upper table part t1 as shown in Fig. 3A and B.
Selection of length l1, length l2 of lower tapered part t2, increase/decrease pitch of lift length to form a straight taper shape, concave coefficient to form taper part t1 (or t1, t2) of concave taper shape a console 37 for inputting winding shape data such as values into the controller 36 as digital values;
A selection switch 38 for selecting a building motion method for forming a package is connected. The controller 36 also includes a counter for counting the number of pulse signals transmitted by the encoder 33, and a memory (ROM) that stores programs for various building motions. , an arithmetic device that calculates a lift length value for each lift for forming the upper tapered portion t1 or the upper and lower tapered portions t1, t2 based on the winding shape data inputted in advance to the controller 36.

In addition, in the above-mentioned building mechanism K, the worm gears 8, 12, the worm wheels 14, 1
5. A hydraulic cylinder and a directional switching valve are provided in place of the transmission mechanism such as the electromagnetic clutch 7 and the electromagnetic brake 11, and the piston shaft of this hydraulic cylinder is linked to, for example, the drive shaft 16, and the switching signal of the controller 36 or the detection switch 32 is connected. The ring 20 may be moved up and down by operating a directional control valve and controlling the forward and backward movement of the piston shaft.

The concave coefficient is that when forming a package having a concave tapered upper tapered part t1 or upper and lower tapered parts t1, t2, the rising end position of the ring 20 in each lift stroke changes in a concave curve, and A coefficient for defining the rate of change of the lift length L so that the descending end position of the ring 20 changes in a convex curve, that is, a coefficient of a curve equation that is the locus of the ascending end position or the descending end position of the ring 20. , an approximation value of 1 is applied so that the rate of change of the lift length L gradually increases or decreases, and when the concape coefficient is set to 1, the rate of change of the lift length becomes constant and the ascending end position and descending end position of the ring 20 are It changes linearly at a constant pitch, and the taper part t1
(or t1, t2) has a straight taper shape.

Next, as shown in FIG. 3A, a building method will be described in the case of forming a tapered-top wound package having a constant lowering end position of the ring 20 and a concave taper-shaped taper part t1 only at the upper part.

Prior to the start of operation of the machine, winding shape data such as the total lift length l of the package, the length l1 of the tapered part t1, the change pitch of the lift length, and the selected value of the concompe coefficient are input from the console 37 to the controller 36. , select the building motion method using the selection switch 38. Based on the winding shape data input to the controller 36 and the selected building motion program, the controller 36 calculates the lift length value in each lift stroke, that is, the ascending distance or ascending/descending distance of the ring 20. Ru.

When the ring 20 starts rising from the lower end position by driving the building mechanism K, the encoder 33
emits a pulse signal proportional to the distance the ring 20 has ascended, and the number of pulses is counted by a counter in the controller 36. When the count value obtained by counting the number of pulses matches the calculated value of the lift length calculated by the controller 36, the controller 36 transmits a switching signal that defines the ascending end position of the ring 20, and the electromagnetic clutch 7 and the electromagnetic brake 11 are activated. In operation, the ring 20 is converted from an upward stroke to a downward stroke. Furthermore, when the ring 20 descends and the detection shaft 27 rotates, causing the reset lever 31 to approach the detection switch 32, the detection switch 32
The contacts are switched and this switching signal is transmitted to the controller 36, and the controller 36 sends a signal to specify the lowering end position of the ring 20, and the electromagnetic clutch 7 and the electromagnetic brake 11 are respectively operated to return to the ring 20. is changed from the downward stroke to the upward stroke, and at the same time when one lift stroke is completed, the count value of the counter is reset to the initial value for restarting counting, that is, 0, by switching the contact of the detection switch 32, Subsequently, the above series of package forming operations are repeated. The ring 20 is controlled to move up and down such that the rate of change in the lift length L and the rate of change in the ascending end position of the ring 20 gradually increase or decrease, and the ascending end position of the ring 20 changes in a concave curve.

The building motion for forming a tapered-top wound package is (1) The locus of the rising end position of the ring rises in a concave curve from l-l1 to l, then rises in a concave curve from l to l-l1. (2) A building motion method in which the locus of the rising end position of the ring repeats a cycle in which the ring ascends in a concave curve from l-l1 to l (see Figure 4 A). (See Fig. 4 B), (3) A building motion method in which the locus of the ring's rising end position repeats a cycle of descending in a concave curve from l to l-l1 (see Fig. 4 C); (4) The ring There is a building motion method in which the locus of the rising end position is a horizontal straight line until the middle of the entire lift stroke, and then descends in a concave curve from l to l-l1 (see Figure 4 D). The system program is stored in the ROM of the controller 36,
An arbitrary building motion method can be selected by the selection switch 38.

Next, as shown in FIG. 3B, a building method will be described in the case where the lower end position of the ring 20 is indefinite and a package in the shape of a pirn winding having an upper tapered portion t1 and a lower tapered portion t2 is formed. however,
Since the lower tapered portion t2 is less likely to lose its shape than the upper tapered portion t1, the lower tapered portion t2 may have a straight taper shape or a convex curved taper shape.

Before operating the machine, determine the total lift length of the package l, the length of the upper tapered part t1, l1, and the length of the lower tapered part t2.
The winding shape data such as l2, change pitch of the lift length L, and selected value of the concave coefficient are input from the console 37 to the controller 36, and the building motion method is selected by the selection switch 38. The lift length value for each lift stroke is calculated by the controller 36 based on the winding shape data input to the controller 36 and the selected building motion method program.

When the machine starts operating and the ring 20 starts moving up and down from the lowering end position, the encoder 33 sends a pulse signal proportional to the ascending distance of the ring 20, and the number of pulses is counted by the counter of the controller 36. . When the count value counted during the upward stroke of the ring 20 matches the calculated value of the lift length calculated by the controller 36, the controller 36 transmits a switching signal to operate the electromagnetic clutch 7 and the electromagnetic brake 11, respectively.
0 is converted from an upward stroke to a downward stroke. In the descending stroke of the ring 20, the number of pulses transmitted by the encoder 33 is continuously counted in the same way as in the ascending stroke, and when this count value matches the lift length calculation value calculated by the controller 36, the electromagnetic clutch 7 At the same time that the brakes 11 are reset and the ring 20 is changed from the downward stroke to the upward stroke, the count value of the counter is reset to 0, one lift stroke is completed, and the series of package formation described above is completed. The action is repeated. The ring 20 is controlled to rise and fall so that the rate of change in the lift length L gradually increases or decreases, the ascending end position of the ring 20 changes in a concave curve, and the descending end position changes in a convex curve.

The building motion for forming a pirn-wound package is as follows: (1) Both the upper and lower tapered parts t1 and t2 have a concave taper shape, and the locus of the rising end position of the ring rises in a concave curve shape from l-l1 to l. Then, the cycle of descending in a concave curve from l to l-l1 is repeated, and the locus of the lowering end position of the ring rises in a convex curve from 0 to l2, and descends in a convex curve from l2 to 0. Repeated building motion method (see Figure 5A), (2) The upper taper part t1 has a concave taper shape, the lower taper part t2 has a straight or convex curved taper shape, and the locus of the rising end position of the ring is as shown in (1). Similarly, the locus of the lower end position of the ring rises in a straight line or concave curve shape from 0 to l2, and then descends in a straight line or concave curve shape from l2 to 0, repeating the cycle, and the upper taper part t1 becomes concave. A building motion system in which the taper shape becomes a straight or convex curved taper shape from the lower taper part t2 (see Figure 5 B), (3) The locus of the rising end position of the ring descends in a concave curve from l to l-l1. A building motion method in which the locus of the lowering end position of the ring rises in a convex curve from 0 to l2 (see Figure 5 C), (4) The upper taper part t1 is a concave taper shape, and the lower taper part t2 is a straight shape. With a tapered shape, the locus of the rising end position of the ring changes as in (3), and the building motion method in which the descending end position of the ring changes linearly or concavely from 0 to l2 (see Figure 5 D). ), (5) A building motion method in which the locus of the ring's rising end position rises in a concave curve from l to l-l1, and the locus of the ring's descending end position descends from l2 to 0 in a convex curve. (Refer to Figure 5 E), (6) The locus of the rising end position of the ring descends in a concave curve from l to l-l1, and then rises in a concave and convex curve from l-l1 to l, repeating the cycle. A building motion method in which the lowering end position of the ring rises in a convex curve from 0 to l2, and then descends in a convex curve from l2 to 0 (see Figure 5 F), (7) Rise of the ring The trajectory of the end position changes in the same way as in (6), and the lower end position of the ring rises in a straight line or concave curve from 0 to l2, and then descends in a straight line or concave curve from l2 to 0. Building motion method that repeats the cycle (see Fig. 5 G), (8) The locus of the rising end position of the ring changes in the same way as (6), and the descending end position of the ring becomes a straight line or concave curve from 0 to l2. There are several types of ascending building motion methods (see Fig. 5H), etc., and the program for each building motion method is stored in the ROM of the controller 36.
An arbitrary building motion method can be selected by the selection switch 38.

Next, the operation and effects of the embodiment having the above configuration will be explained.

In this example, the upper taper part t1 of the concave taper shape
Alternatively, the controller 36 sets the lift length value in each lift stroke to form a package having upper and lower tapered portions t1 and t2 so that the lift length of the ring gradually increases over time and the locus of the rising end position of the ring draws a concave curve.
Calculation is performed based on the selected value of the concave coefficient and other winding shape data input in advance into the controller 36, and a building motion method program selected from among various building motion method programs stored in the controller 36. Pulse signals transmitted in synchronization with the movement of the ring are counted, and this count value is compared with the calculated lift length value to determine the direction of movement of the ring to the rising end or rising end and descending for each lift stroke. It is configured to be converted at the end.

This eliminates the need for a complicated transmission mechanism such as a gear train, which simplifies the building mechanism and maintenance and reduces failures.In addition, the winding shape data for forming the required package shape is input to the controller 36. Moreover, by simply selecting the required building motion method using the selection switch 38, the winding shape of the package can be set and changed easily and accurately. This has the effect of significantly simplifying the number of steps involved, thereby simplifying and speeding up the winding shape switching operation.

In addition, the winding shape of the package can be changed in various ways by changing the selection switch 38 or replacing the ROM, and various building motion methods are stored in the controller 36.
Winding conditions suitable for each yarn can be selected from among various building motion methods, and the shape of the package in which various yarns are wound can be optimized and stabilized.

Furthermore, since the ascending and descending direction of the ring 20 is changed according to the signal output from the controller 36, the positioning accuracy of the ascending and descending end position of the ring 20 can be improved.

(Effects of the Invention) Since the present invention is constructed as described above, setting and changing the winding shape of a package having a concave tapered upper tapered portion is significantly simplified, and the work of switching the winding shape is simplified and quickened. In addition, packages with the same winding shape can be formed by changing the building motion method.
This has the effect that the building motion method used when forming a package having a concave tapered portion can be easily changed according to the purpose.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view of the main parts, FIG. 2 is a plan view, FIGS. 3A and B are side views of the package, and FIGS. 4A and B , C, and D are ring movement locus diagrams and side views of the package showing each building motion method when forming a tapered-top wound package, respectively.
G and H are a movement locus diagram of the ring and a side view of the package showing each building motion method when forming a package in the shape of a pie-wound, respectively, and FIG. 6 is a block diagram of the package forming apparatus. 20...Ring, 32...Detection switch, 33
...Encoder, 36...Controller, 38...
...Selection switch, K...Building mechanism.

Claims (1)

[Claims] 1 The lift length value in each lift stroke to form a package cage with an upper tapered part in a concave taper shape is controlled so that the lift length of the ring gradually increases over time and the locus of the rising end position of the ring draws a concave curve. The concave coefficient is calculated based on the selected value of the concave coefficient and other winding shape data entered in advance into the controller, and the building motion method program selected from among the various building motion method programs stored in the controller. The ring is characterized by counting pulse signals transmitted in synchronization with the movement of the ring, comparing this count value with the calculated lift length value, and changing the moving direction of the ring at the rising end for each lift stroke. How to form a package.