JPH0723760U - Data storage device for constant-speed winding winder - Google Patents

Abstract

(57) [Abstract] [Purpose] At the time of the first winding, a roller that rotates due to the frictional force of the yarn is used, the winding speed is detected, and the inverter command voltage for winding the yarn at a constant speed is stored in the data storage device. Then, the next time, the inverter is directly driven by the stored data. [Structure] The winding speed of the winding motor 6 is detected by detecting the winding speed of the yarn from the roller which is rotated by the frictional force of the yarn and comparing it with a preset speed signal PO only during the first winding. The data of the inverter command voltage P2 of the winder that can be wound at a constant yarn speed is controlled by using the inverter 7, sampled and stored, and P22 is output. From the next winding, the inverter 7 is directly driven by the stored data, and the feedback signal P from the yarn speed detector 9 is sent.
Even without 1, the yarn can be wound at a constant speed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an inverter control method for a constant yarn speed winding winder, in particular, data storage of an inverter command voltage obtained by comparison with a feedback signal from a yarn speed detector, and the stored data directly from the next winding. The present invention relates to the technology of a data storage device capable of driving an inverter.

[0002]

[Prior art]

 Conventionally, the control method of the constant yarn speed winding winder drives the inverter with the inverter command voltage obtained by comparison with the feedback signal from the yarn speed detector. Therefore, when winding the yarn, the roller of the yarn speed detector must be always rotated by the frictional force of the yarn. In order to rotate the roller, some tension must be applied to the thread, but with a very thin thread of around 10 denier, there is a desire not to apply tension as much as possible, so if the tension is low, the roller will rotate. In some cases, the actual yarn speed could not be measured accurately due to unevenness or slippage.

Therefore, in the case of the above-described ultra-fine yarn, the winding bobbin of the weight that rotates the roller of the yarn speed detector is too hard, and in the case of the bake bobbin, the brim is often damaged. is there. In addition, the yarn itself has a defect that the quality is deteriorated due to fluffing.

[0004]

[Problems to be solved by the device]

 In the conventional method, as described above, it is always necessary to rotate the roller of the yarn speed detector, which causes various inconveniences.

Therefore, the object of the present invention is to solve the above-mentioned problems, to rotate the roller of the yarn speed detector only once at the first time, and store the inverter command voltage obtained thereby in the data storage device, and from the next time onward. Is to realize an equal yarn speed winding winder that directly drives the inverter with the stored data and does not require a yarn speed detector.

[0006]

[Means for Solving the Problems]

 To achieve the above object, the present invention provides eighteen data storage devices between eight speed command controllers and seven inverters. The roller of the yarn speed detector is rotated only once at the first time, the inverter command voltage P2 obtained thereby is stored, and at the same time, P22 is output to drive the inverter. At this time, naturally, P2 and P22 are equal DC voltages. The higher the sampling rate of the data storage device, the better, but it will be about once every 15 seconds because many memory elements are required. When winding the yarn from the next time, the stored data is used to drive the inverter directly.

[0007]

[Action]

 It is only necessary to rotate the roller of the yarn speed detector by the tension of the yarn only once at the first time of data acquisition, and it is not necessary from the next time. Therefore, it is possible to adjust the tension of all spindles to the same after the second time. Become. Particularly, in the case of an extremely fine yarn, the quality of the yarn is not deteriorated, the hardness is not too hard, and the bake bobbin is not damaged.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the configuration of a drive control system of a warp winding pan winder. As shown in the figure, the filament yarn Y from the yarn supplying pan 1 is guided to the winding pan 3 through the tensor and the traverse guide 2 and is left and right in the notch direction by the traverse guide 2 though not shown. While being traversed, it is wound into a warp-shaped pan shape. The winding pan 3 is directly connected to the shaft of the winding motor 6. Reference numeral 7 is an inverter for operating the take-up motor 6 at a variable speed, and the speed command P2 from the speed command controller 8 once enters the data storage device 18 and is sampled and stored in the data memory. The output P22 is equal to P2 in the first winding, but has a slight error after the second winding, although it is related to the sampling speed. The output P22 directly becomes the command voltage of the inverter 7, the winding motor 6 is driven at a frequency corresponding to the voltage, and variable speed operation is performed.

In FIG. 1, another DC voltage V1 is processed by 18 data storage devices. The stepping motor No. 22 rotates a control screw (not shown) in order to realize the warp winding. This determines the up and down angles of the warp winding and must be controlled with great precision. The DC voltage V1 set by the 20 VF speed setting device is input to the 19 VF signal converter, which is input to and stored in the 18 data storage device. Then, V11 is output and becomes the set voltage of the 19 VF signal converter. Since V1 does not change with time, V1 and V11 are always equal. As a result, the pulse signal F1 is output from the 19 VF signal converter to drive the 21 driver and rotate the 22 stepping motor.

On the other hand, a yarn speed detector 9 is provided to detect the winding speed of the yarn Y while the filament yarn Y guided from the yarn supplying pan 1 to the winding pan 3 is running. As shown in FIG. 2, the yarn speed detector 9 is composed of a roller 10 which is rotated by the frictional force of the yarn Y and a proximity switch 11 which detects an iron piece attached to the roller 10. , 12 guides 1 provided before and after the roller 10 and guides 2 provided at 13 are appropriately adjusted. A DC pulse signal is obtained from the proximity switch 11.

The winding speed P1 of the yarn, which is output as a pulse signal from the yarn speed detector 9 in the first winding, is input to the FV signal converter 14, where DC voltage proportional to the number of pulses is applied. After being converted into the pressure P11, it is input to the speed command controller 8. Further, the output of the FV signal converter 14 drives 15 yarn speed meters to display the yarn speed.

The speed command controller 8 uses a built-in comparator (not shown) to input the winding speed DC voltage signal P11 from the FV signal converter 14 from the speed setter 16 to a preset speed. Compared with the DC voltage signal PO, the control speed signal P2 is output so that the difference of the actual speed P11 fed back to the set speed PO becomes zero according to the comparison result. , 18 data storage devices. By storing P2 in the data memory by sampling, P22 is simultaneously output. This is used as a speed command for the inverter 7. The inverter 7 drives the winding motor 6 at an output frequency corresponding to the commanded voltage, and as a result, the rotational speed of the winding pan 3 changes so as to achieve uniform yarn speed winding. In these first windings, the selector switch 1 of 24 shown in FIG. 3 is set to the storage side.

From the second time onward, only the 18 data storage devices directly drive the 7 inverters. At this time, the selector switch 1 of 24 shown in FIG. 3 is set to the control side. With this, uniform yarn speed winding can be realized without a feedback system. Further, in the warp-type pan winder of FIG. 1, since the control of the stepping motor 22 that determines the pan angle is also stored, the desired pan shape can be obtained by simply pressing the start switch 25 of FIG. The selector switch 2 of 26 in FIG. 3 is for selecting a data memory bank. In Fig. 3, there are 4 banks from 1 to 4, but if this number is increased to about 20 banks, 20 different kinds of thread types will be warped at the desired thread speed and angle. Is obtained. Of course, when it is desired to take up the data stored in one bank, the 24 selector switches 1 are set to the control side while keeping the one bank.

In FIG. 3, 18 data storage devices are not limited to 24 selector switches 1 on the storage side and control side, 27 elapsed time indicators indicate the winding time, and 28 inverter commands. The voltage display shows the DC voltage value, and the 29 step number display shows the number of sampling times. Further, after the stored number of steps is completed, the last data is held and output.

[0015]

[Effect of device]

 As described above, according to the present invention, it is not necessary to rotate the roller of the yarn speed detector each time in the conventional uniform yarn speed winding, and the tension is hardly applied to the fine yarn. However, the same conditions can be applied to all weights, and the first weight bake bobbin will not be damaged. When used in a pan winder as shown in Fig. 1, more than 20 kinds of yarns can be obtained in a predetermined pan shape by simply selecting the desired bank and pressing the start switch. It can also be applied to the uniform speed winding of a simple parallel winding bobbin winder.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a control system of a warp winding pan winder for implementing the present invention.

FIG. 2 is a configuration diagram of a yarn speed detector 9 of FIG.

FIG. 3 is a block diagram of a data storage device for implementing the present invention.

[Explanation of symbols]

 1 yarn feeding pan 2 traverse guide 3 winding pan 4 cradle handle 5 traverse bar 6 winding motor 7 inverter 8 speed command controller 9 yarn speed detector 10 roller 11 proximity switch 12 guide 1 13 guide 2 14 FV signal converter 15 yarn Speedometer 16 Speed setting device 17 Winding yarn 18 Data storage device 19 VF signal converter 20 VF speed setting device 21 Driver 22 Stepping motor 23 Power switch 24 Selector switch 1 25 Start switch 26 Selector switch 2 27 Elapsed time display device 28 Inverter Command voltage indicator 29 Step number indicator 30 Voltage input port 1 31 Voltage output port 1 32 Voltage input port 2 33 Voltage output port 2

Claims (1)

[Scope of utility model registration request] 1. The equal speed of a winding motor is controlled using an inverter by detecting the winding speed of a yarn from a roller which is rotated by the frictional force of the yarn and comparing it with a preset speed. A data storage device for a constant-speed winding winder, which stores data of an inverter command voltage of a winder capable of rapid winding, and drives the inverter directly by the stored data from the next winding.