JP3047618B2 - Roving machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roving machine provided with a take-up speed change device for reducing a bobbin rotation speed in response to an increase in a roving layer on a bobbin.

[0002]

2. Description of the Related Art In a bobbin lead type roving machine, a roving yarn fed from a front roller at a constant speed is converted into a roving yarn by a rotation speed difference between a flyer rotating at a predetermined speed and a bobbin rotating at a higher speed. And wind it around a bobbin. The bobbin is supported by the bobbin rail and is moved up and down together with the bobbin rail, and the moving distance of the bobbin rail is reduced each time the direction of the bobbin rail elevating movement is changed,
The roving is wound so that both ends of the roving have a conical shape.

[0003] Unless winding is performed so that the amount of roving delivered and the amount of winding become substantially the same during winding, normal winding cannot be performed, and yarn unevenness or roving breakage due to fluctuations in the tension of the roving. Occurs. Therefore, conventionally, a transmission using a pair of cone drums and a belt shifter has been controlled so that the rotation speed of the bobbin gradually decreases as the roving layer wound on the bobbin increases. However, since the ratio of the increase in the roving diameter to the number of roving layers wound on the bobbin changes depending on the spinning conditions, the shape of the cone drum should be changed (change the cone drum) according to the spinning conditions. It is necessary to change the movement amount of the belt shifter in accordance with the spinning conditions by using an adjustable cam (Japanese Patent Publication No. 52-48652), and each time the spinning conditions are changed, the troublesome replacement or adjustment is required. Work was needed. Also, a device that drives a gear system that drives a long rack that is linked to the belt shifter with a motor, and controls the drive of the motor so that the movement amount of the belt shifter corresponding to the number of winding layers input to the microcomputer. Has also been proposed (Japanese Patent Application Laid-Open No. 62-117829).

In recent years, in order to cope with frequent changes in spinning conditions, the spinning drive system and the winding drive system are driven by different variable speed motors, respectively, in order to respond to frequent changes in spinning conditions. A roving machine has been proposed in which each variable speed motor is drive-controlled based on data input to a storage device in advance in accordance with spinning conditions (for example, see Japanese Patent Application Laid-Open No. Sho 6).
3-264923).

[0005]

In an apparatus in which the amount of movement of the belt shifter can be adjusted, it is not necessary to replace the cone drum in accordance with a change in spinning conditions. In order to set the amount of decrease in the rotation speed to an appropriate value, it is necessary to set an appropriate amount of movement of the belt shifter according to a change in spinning conditions. Also, in an apparatus in which the spinning drive system and the winding drive system are driven by different variable speed motors, the bobbin rotation speed corresponding to the increase of the roving winding layer in accordance with the change of the spinning condition can be adjusted. It is necessary to set a large reduction amount. To set an appropriate amount of belt shifter movement or an appropriate decrease in bobbin rotation speed, if there is data from the past spinning under the same spinning conditions, it can be used, but in other cases, It can only be estimated based on the workers' past experience and intuition. However, since this estimated value is not always an appropriate value, it is necessary to perform a trial spinning.
Then, depending on spinning conditions, a plurality of trial spinnings are often required until the estimated value approaches an appropriate value. as a result,
There is a problem that raw materials and labor are wasted by the trial spinning, and that the operating efficiency of the roving machine is reduced. And, since the spinning conditions are frequently changed corresponding to the production of many kinds and small lots, the above-mentioned problem becomes more remarkable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object the purpose of inputting spinning conditions by an operator so that the bobbin rotation speed with respect to the increase in the roving winding layer corresponding to the spinning conditions. It is an object of the present invention to provide a roving machine in which the amount of decrease of the bobbin is automatically calculated and the bobbin rotation speed is appropriately changed according to the spinning conditions.

[0007]

In the present invention for achieving the above object Means for Solving the Problems] In Rover having a winding speed transmission which corresponds to an increase of coarse yarn layer against the bobbin decreases the bobbin rotational speed of at least Fiber type, flyer rotation
Roving under the same spinning conditions with the same number, number of presser windings, etc.
Reduce the amount of decrease in the bobbin rotation speed with the increase of the winding layer
Also finds a function with the roving weight variable and this function
It was used as a database for each to each of the different spinning conditions
Storage means for storing Te, roving weight, fiber type, the flyer speed input means for inputting the spinning condition of the presser winding number or the like, stored in the storage device and the spinning conditions input by said input means Spinning derived from the database
Based on the function corresponding to the condition, the amount of decrease in the bobbin rotation speed with respect to the increase in the roving winding layer under the spinning conditions is calculated,
Control means for outputting a control signal for realizing the bobbin rotation speed to the winding speed transmission device.

Further, in the invention according to claim 2, in addition to the above configuration, after the spinning operation in an appropriate winding state, the bobbin rotation with respect to the spinning conditions and the increase of the roving winding layer in the spinning operation. A renormalization means is provided for recognizing the relationship with the speed reduction amount as derivation data of the database.

[0009]

According to the present invention, the bobbin rotation speed is changed based on a preset bobbin rotation speed shift pattern every time the winding roving layer is increased, and the bobbin rotation speed is controlled so that the roving yarn tension becomes an appropriate state. Is done. When spinning conditions such as roving weight, fiber type, flyer rotation speed, and presser winding number are input by the input device, the input spinning conditions and the spinning conditions derived from the database stored in the storage device. Corresponding to
The amount of decrease in the bobbin rotation speed with respect to the increase in the roving winding layer under the spinning conditions is calculated by the control means based on the following function . A control signal is output from the control means to the winding speed transmission so that the bobbin rotates at the bobbin rotation speed.
Then, the winding speed transmission is operated according to the control signal, and the rotational speed of the bobbin is appropriately changed every time the winding roving layer is increased.

According to the second aspect of the present invention, after the spinning operation in an appropriate winding state, the relationship between the spinning conditions in the spinning operation and the amount of decrease in the bobbin rotation speed with respect to the increase in the roving winding layer. Are recalculated as derivation data of the database by the recalculation means.

[0011]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings. The drive system of the roving machine is basically the same as that previously proposed by the applicant of the present invention (JP-A-63-264923), but the mechanism for switching the bobbin rail up and down is different. The front roller 1 is driven to rotate via a gear train disposed between one end of the rotation shaft 1a and a driving shaft driven to rotate by the main motor M. A driven gear 3 is fitted and fixed on the upper portion of the flyer 2 so as to be integrally rotatable. The drive shaft fitted to the rotary shaft 4 by the rotation of the rotary shaft 4 transmitted through the belt transmission mechanism through the rotation of the driving shaft. It is rotationally driven via the gear 5. On the other hand, a driven gear 7a is fixed to a spindle 7 mounted on the bobbin rail 6. A rotating shaft 9 to which a driving gear 8 meshed with the driven gear 7a is fitted and fixed has a rotating force of a driving shaft,
The rotational force of the take-up motor 11 driven to change the speed via the inverter 10b is combined and transmitted by the differential gear mechanism 12. A take-up speed transmission device is configured by the take-up motor 11, the differential gear mechanism 12, and the like that reduces the bobbin rotation speed in response to the increase in the roving layer.

A lifter rack 13 is fixed to the bobbin rail 6. Gear 1 meshing with lifter rack 13
The rotation of a drive shaft 17 driven by a lifting / lowering motor 16 driven by a speed change via an inverter 10c is transmitted to the rotation shaft 15 on which the 4 is fitted via a switching mechanism 18 and a gear train. The switching mechanism 18 includes an intermediate shaft 19 and the intermediate shaft 19.
And a pair of gear trains 2 provided between
0 and 21 and electromagnetic clutches 22 and 23 for transmitting the rotation of the gear trains 20 and 21 to the intermediate shaft 19.
The direction of rotation of the rotating shaft 15, that is, the direction of the vertical movement of the bobbin rail 6 is changed by the excitation and demagnetization of the electromagnetic clutches 22 and 23. A rotary encoder 24 is connected to an end of the rotating shaft 15 as a sensor for detecting the vertical movement direction of the bobbin rail 6.

Next, a control circuit for controlling the driving of the driving system will be described with reference to FIG. The microcomputer 26 constituting the control device 25 is inputted by a central processing unit (hereinafter referred to as a CPU) 27 as a control means, a program memory 28 composed of a read only memory (ROM) storing a control program, and an input device 29. And a working memory 30 as a storage means comprising a readable and rewritable memory (RAM) for temporarily storing the input data and the result of the arithmetic processing in the CPU 27.
7 operates based on the program data stored in the program memory 28.

An input device 29 as input means for inputting spinning conditions such as roving weight, fiber type, flyer rotation speed, presser winding number and the like is incorporated in the control device 25 as a keyboard. An output signal from the rotary encoder 24 is input to the CPU 27 via the input interface 31. Also, the electromagnetic clutch 22,
23 controls the excitation and demagnetization of the bobbin rail 14 based on a signal from the CPU 27 through an electromagnetic clutch excitation and demagnetization circuit 32, and performs the switching of the bobbin rail 14 up and down. or,
The CPU 27 includes an output interface 33, motor drive circuits 34a, 34b, 34c, and inverters 10a, 10
The main motor M, the winding motor 11 and the lifting / lowering motor 16 are driven and controlled via b and 10c.

The program memory 28 stores the amount of decrease in the bobbin rotation speed with respect to the increase in the roving winding layer, the roving weight (gelling) g, the fiber type m, the number of flyer rotations NF, the number of presser windings n, and the type of flyer type t. Is stored. The fiber type means a difference in carded cotton, combed cotton, synthetic fiber, and the like, and a difference in flyer type includes a difference in pressurizing force. The database is created by classifying and organizing the operating condition data accumulated as data so far, and using a statistical processing method or the like for each of the classified sample groups, the amount of decrease in the bobbin rotation speed with respect to the increase in the roving winding layer Δ And the relational expression between the used roving weight g is determined. The equation Δ = F (g) is stored in the program memory 28 as a database.

For example, as shown in FIG. 3, the fiber type m, the number of turns of the flyer NF, the number of turns of the presser n, the flyer type t
Is plotted on coordinates using the amount of decrease in the bobbin rotation speed Δ with respect to the increase in the roving winding layer and the weight of the used roving yarn g as variables, and the relational expression is obtained. The fiber type m, the number of rotations of the flyer NF, the number of turns of the presser n, and the type of the flyer t exist as discrete data, whereas the weight g of the roving used varies depending on the spinning conditions. Therefore, in the case of the spinning using the roving weight of the used roving weight g which does not correspond to the marks only with the data indicated by the circles, the crosses, etc. in FIG. It is necessary to set Δ. However, the database stores, as a continuous function obtained from the data, the relationship between the decrease amount Δ of the bobbin rotation speed with respect to the increase in the roving winding layer and the used roving weight g for each sample group. In the figure, m: cotton (cardid), n: 3 times, t: A type, NF: 1000 to 1200 rpm, m: cotton (combed), n: 4 times, t: B type, NF: 800 to 100
0 rpm, m: synthetic fiber, n: 4 times, t: B type, NF: 1
Illustrated for three sample populations at 000-1200 rpm.

Next, the operation of the above-configured device will be described. Prior to the operation of the machine base, spinning conditions such as roving weight (gel) g, fiber type m, flyer rotation speed NF, presser winding number n, and flyer type t are input by the input device 29. When the spinning conditions are input, the CPU 27 determines a continuous function corresponding to the spinning conditions other than the roving weight g based on the database stored in the program memory 28.
And substitute the roving weight g into the derived continuous function.
Then, the amount of decrease Δ in the bobbin rotation speed with respect to the increase in the roving winding layer under the spinning conditions is calculated and set.

Thereafter, the operation of the machine base is started, and the front roller 1 and the flyer 2 are driven to rotate by the main motor M, respectively. In addition, the winding motor 1
1 and the elevating motor 16 are also driven, and the differential gear mechanism 12
The rotational force of the main motor M input to the
Are combined by the differential gear mechanism 12, and the combined rotating force drives the rotating shaft 9 to rotate the spindle 7. Thereby, the roving yarn R drawn by the draft device is twisted by the flyer 2 and wound up in a layer on a bobbin B rotating at a higher speed than the flyer 2. In addition, the bobbin rail 6 is moved up and down together with the lifter rack 13 via the switching mechanism 18, the rotating shaft 15, and the like by driving the elevating motor 16. The winding speed and the elevating speed of the bobbin rail 6 are changed by changing the rotation speeds of the winding motor 11 and the elevating motor 16.

The CPU 27 inputs the output signal from the rotary encoder 24 and calculates the position of the bobbin rail 6.
An excitation / demagnetization switching signal is output to the electromagnetic clutches 22 and 23 so that the roving winding shape (roving winding shoulder angle) corresponding to the spinning conditions is obtained. The bobbin rail 6 moves up and down within a predetermined range with the demagnetization of the electromagnetic clutches 22 and 23.

The CPU 27 includes a rotary encoder 24.
Switching of the bobbin rail 6 is detected based on the output signal from the motor, and the winding motor is driven via the inverter 10b so that the bobbin rotation speed is reduced by the decrease amount Δ each time the winding roving layer increases by one layer. 11 is driven and controlled. Then, the rotational speed of the bobbin B is reduced by an appropriate decrease amount Δ each time the winding roving layer increases by one layer. Further, the speed of the lifting motor 16 is also decelerated in accordance with the speed of the winding motor 11, and the moving speed of the bobbin rail 6 is reduced in synchronization with the winding speed.

(Embodiment 2) Next, another embodiment will be described.
In the above-described embodiment, the database for setting the amount of decrease in the bobbin rotation speed with respect to the increase in the roving layer is limited to those stored in advance in the program memory 28 and is invariable. In this embodiment, the database can be revised. This is different from the above embodiment.

That is, in this embodiment, in the program memory 28, in addition to the program for deriving the relationship between the reduced amount Δ serving as a database and the roving weight (gel) g, the roving weight (gel) g, Data indicating the relationship between the fiber type m, the number of flyer revolutions NF, the number of presser windings n, the flyer type t, and the amount of decrease in the bobbin rotation speed with respect to the increase in the roving layer is stored. Further, the work memory 30 can store data indicating the relationship between the new spinning conditions and the reduction amount Δ. In this embodiment, the working memory 30 is used.
Constitutes a renormalization means for rewriting the relational expression between the new spinning condition and the decrease amount Δ into the database as new derivation data. The CPU 27 determines the relationship between the program and the data stored in the program memory 28 and, if the derivation data is stored in the working memory 30, the data.
An equation is derived, and based on the relational expression , a decrease Δ in the bobbin rotation speed with respect to the increase in the roving winding layer corresponding to the spinning condition is calculated.

If the spinning is temporarily performed with the reduced amount Δ calculated from the database and the amount of the reduced amount is insufficient during the actual spinning operation and the operator adjusts the tension, the tension is adjusted. The reduced amount Δ in the actual proper spinning operation after the spinning and the spinning conditions at that time are stored in the working memory 30 as derivation data of a new database. And CPU2
7 derives a database again based on the data stored in the program memory 28 and the new data stored in the working memory 30, and based on the database, the bobbin for increasing the roving winding layer corresponding to the spinning conditions. The amount of decrease Δ in the rotation speed is calculated.

That is, in this embodiment, as data for determining a curve serving as a database, new data is sequentially added in addition to the data stored in the program memory 28 in advance. Therefore, as shown in FIG. 4, when determining a curve representing a relational expression serving as a database, new data indicated by a chain line is added in addition to the original data indicated by a solid line, so that the reliability of the curve serving as a database is improved.

The present invention is not limited to the above embodiment. For example, as a database for calculating the amount of decrease Δ in the bobbin rotation speed with respect to the increase in the roving layer, the amount of decrease Δ (Gerren) It may be a function represented by variables of both g and the flyer rotation speed NF. or,
As a device disclosed in Japanese Patent Application Laid-open No. Sho 62-117829 as a take-up speed transmission device, a rotatable yarn winding system is used in which a cone drum is used and a gear system for driving a long rack interlocked with a belt shifter is driven by a motor. The long rack feed amount may be used as the decrease amount Δ of the bobbin rotation speed with respect to the increase in the layer. Also, as the drive system of the roving machine,
A configuration in which all the driving systems are independently driven by a motor without providing the differential gear mechanism 12 may be adopted.

[0026]

As described in detail above, according to the present invention, when the operator inputs the spinning conditions, the amount of decrease in the bobbin rotation speed with respect to the increase in the roving winding layer corresponding to the spinning conditions is automatically determined. Therefore, the experience and intuition conventionally required of the worker are not required. Further, it is possible to reduce the labor, time, waste of raw materials, and the like required for the trial spinning for setting an appropriate amount of decrease in the bobbin rotation speed with respect to the increase in the roving winding layer corresponding to the spinning conditions.

According to the second aspect of the present invention, in addition to the above-described effects, the bobbin rotation speed data in the appropriate tension state obtained during the previous winding operation is utilized in the next winding operation, and the database is used. The reliability of is improved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a drive system of a roving machine.

FIG. 2 is a block diagram illustrating an electrical configuration of a control device.

FIG. 3 is a diagram showing the relationship between the amount of decrease in the bobbin rotation speed with respect to the increase in the roving winding layer and the roving weight, fiber type, flyer rotation speed, presser winding number, and the like.

FIG. 4 is a diagram showing the relationship between the amount of decrease in the bobbin rotation speed with respect to the increase in the roving winding layer and the roving weight, fiber type, flyer rotation speed, presser winding number, etc. in the second embodiment.

[Explanation of symbols]

27 ... CPU as control means, 28 ... program memory as storage means, 29 ... input device as input means, 30 ... working memory constituting retraction means.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-264923 (JP, A) JP-A-3-220325 (JP, A) JP-A-3-40819 (JP, A) JP-A 62-264923 8979 (JP, A) JP-A-62-85036 (JP, A) JP-A-62-117829 (JP, A) JP-A-50-5628 (JP, A) JP-A-1-229823 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) D01H 1/36 D01H 13/32

Claims (2)

(57) [Claims] 1. A roving machine provided with a take-up speed transmission device for reducing a bobbin rotation speed in response to an increase in a roving layer on a bobbin, wherein at least a fiber type, a flyer rotation speed, and a presser winding number are provided.
For the increase of the roving layer under the same spinning conditions.
The amount of decrease in the rotational speed of the bin should be at least a variable of the roving weight.
Function and calculate this function for different spinning conditions.
Storage means for storing a database for each roving weight, fiber type, the flyer speed input means for inputting the spinning condition of the presser winding number, etc., and spinning conditions input by said input means, The spinning conditions derived from the database stored in the storage device
Calculates the amount of decrease in the bobbin rotation speed with respect to the increase in the roving winding layer under the spinning conditions based on a function corresponding to the above, and outputs a control signal for realizing the bobbin rotation speed to the winding speed transmission device. A roving machine provided with control means for performing 2. A roving machine provided with a take-up speed transmission device for reducing a bobbin rotation speed in accordance with an increase in a roving winding layer on a bobbin, wherein at least a fiber type, a flyer rotation speed, and a presser winding number are provided.
For the increase of the roving layer under the same spinning conditions.
The amount of decrease in the rotational speed of the bin should be at least a variable of the roving weight.
Function and calculate this function for different spinning conditions.
Storage means for storing a database for each roving weight, fiber type, the flyer speed input means for inputting the spinning condition of the presser winding number, etc., and spinning conditions input by said input means, The spinning conditions derived from the database stored in the storage device
Calculates the amount of decrease in the bobbin rotation speed with respect to the increase in the roving winding layer under the spinning conditions based on a function corresponding to the above, and outputs a control signal for realizing the bobbin rotation speed to the winding speed transmission device. After the spinning operation in an appropriate winding state, the relationship between the spinning conditions in the spinning operation and the amount of decrease in the bobbin rotation speed with respect to the increase in the roving layer, as deriving data in the database. A roving machine comprising a rewinding means for rewinding.