JPS5951607B2 - Method and device for adjusting sliver unevenness in a drawing machine - Google Patents

Description

[Detailed Description of the Invention] This invention takes a plurality of finished slivers that have been polymerized and drafted by one wire diameter machine, measures the thickness of each one, and calculates the cumulative average value of the finished slivers. This article relates to a method and device for adjusting the unevenness of the finished sliver by changing the draft amount when it is out of the set target range.The method and device can reduce the frequency of changes, make the response time of the control relatively long, and achieve the adjustment effect with an inexpensive device. The purpose is to improve production and increase production.

That is, as shown in FIG. 1, the present invention provides a finishing sliver S1. Measurement baseline O assumed by S2
-0 to the average setting value a of these actual thicknesses (i.e., o'-o'), with the above-mentioned o'-o' as the center and the allowable setting ranges above and below, and the above-mentioned sliver S1. This is intended to correct the portion of the average accumulation curve C of the thickness S2 that is outside the allowable setting range.

Conventional automatic control devices for draft amount, so-called autolevelers, are disclosed in Japanese Patent Publications No. 35-17927 and No. 184.
As shown in Japanese Patent No. 68, etc., since the adjustment is performed on one draft sliver, the adjustment is required frequently and an expensive device that can withstand the adjustment is required.

Also, regarding the wire diameter method of the unevenness control method, in the conventional process, one finished sliver comes out of one machine, and the first drawing machine receives sliver stored in several cans of carding. The slivers that are supplied and drawn to approximately the same number of times are stored in cans, and several can slivers are again supplied to the second drawing machine, which is then drawn to approximately the same number of times and stored in cans one after another. .

In the process of this invention, both the first drawing machine and the second drawing machine spin two finished slivers from one machine, that is, one set of slivers housed in several cans of each carding machine. Then, feed it to the first drawing machine to form one finished sliver,
Control is performed so that these two simultaneously spun finished slivers have an average target value of gel.

The second drawing machine feeds these two cans, which are filled at the same time, into one set, for example, four sets each, and similarly to the first drawing machine, it can be drawn and spun by approximately the same number of times. , the sliver becomes a grain with an average target value, and two can slivers are obtained at the same time.

Therefore, a sliver without unevenness can be obtained by a simple method.

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

FIG. 2 is an outline of the entire process, FIG. 3 is an explanatory diagram of the control instruction device 2, and FIG. 4 is an explanatory diagram of the electric circuit of the small motor 3 for control.

A series of sliver unevenness adjusting devices in the wire diameter machine of the present invention are installed in one wire diameter machine, and include a detection part 1, a measurement device 2, a control instruction device 3, a small control motor 4, a speed reduction device 5, and a non-uniformity adjusting device. It consists of a gear transmission 6 (see Fig. 2).

The wire diameter machine produces a plurality (in this example two) of polymerized slivers, namely finishing slivers S1. Trumpets 9 and 9', which pass through S2 separately and face the pair of equal-force render rollers 8 of the detection unit 1, are trumpets shown in FIG. 6 that also serve as measurements using air pressure.

That is, the trumpets 9, 9' have sliver sockets 10,
It consists of a thick cylindrical part 11, a conical part 12 connected to a measuring device 2 (to be described later) having an air pressure measuring mechanism through a hole 14, and a thin cylindrical part 13.

The measuring device 2 is a well-known Tex Alarm made by Worcester Co., Ltd., and the sliver S1. When S2 passes through said trumpet 9, 9' with sufficient speed, the air pressure in the conical part 12, which reduces the cross-sectional area in the trumpet 9, 9', increases;
This sliver S1. The pressure determined by the fiber density of s2 and the cross-sectional area of the conical portion 12, which is the measuring portion, is converted into an electrical signal by the measuring device 2 and amplified.

FIG. 3 is a command system diagram of the control instruction device.

The control instruction device 3, ie, the leveler control box, sends the average value signal measured for 5 seconds for the finished sliver by the measuring device 2 to the slivers S1 and S2 passing through the trumpets 9 and 9' for a certain period of time. (40), and here the double-sided sliver S1, 82 minutes is averaged and accumulated (41), and the preset (42) first
If it goes outside the allowable set value range ±b shown in the figure, the + and - values cause the small motor 4 that operates the continuously variable transmission device 6 installed for draft change to send a signal in the positive or negative direction (4
3) At the same time, start the small motor 4 (44).

The accumulation of the above average values is within the allowable set value range ±b (42'
), no command is given to the small motor 4.

The small motor 4 is driven only while this average signal exceeds a preset tolerance value, and automatically stops when the average signal falls within the tolerance value.

FIG. 4 is an electric circuit diagram of the small motor device 4 for control, showing the installation mode of the relay 2 for indicating the rotation direction of the starting circuit Connect in the decreasing direction.

The control instruction device 3 controls the two finishing slivers S1. The electrical signals of S2 are integrated for 0 to several seconds (can be set arbitrarily) and replaced with the average value signal of the two finished slivers in step 40, and the small motor 4 is rotated in the corresponding correction direction to perform stepless speed control. Operate device 6 to remove trough l.
- Two finishing slivers S1. The average value of S2 can be displayed on the indicator 16 and recorded on the recorder 17.

FIG. 5 is an explanatory diagram of the conduction path.

The rotation of the original shaft 19 coming out of the gear box 18 on the gear end side passes through a belt 20 and a constant speed input shaft 21 to a continuously variable transmission belt 6.
The back bottom roller 24 is rotated through the variable speed output shaft 22 and the belt 23, and then the third and second hologram rollers 25° 26 are rotated by interlocking gears, and together with the respective top rollers 27, the sliver S1. Develop S2.

Reference numeral 28 denotes a front bottom roller that rotates at a constant rate, and performs unevenness correction between the front rollers 28 and 27 and the 20th rollers 26 and 27.

On the other hand, the small motor 4 rotates in forward and reverse directions according to the command from the control instruction device 3, and is decelerated by the reduction gear device 5 to rotate the pinion 29, and rotates the sector lever 30 that meshes with it to change the angle, and is continuously rotated. A shift operation shaft (not shown) of the transmission device 6 is moved to transmit the transmission to the shift output shaft 22 .

As a result, the back rollers 24, 27, the 30th roller 25,
27 Adjust the rotation of the 20th rollers 26 and 27, and remove the sliver S.
1. Adjust the draft amount of S2.

This invention provides a plurality of finished slivers S1. S2 is detected separately, one measuring device 2 sequentially measures these, and a control instruction device 3 detects a plurality of finished slivers S1. When the measured values of S2 are accumulated and the average value falls outside the range of the preset target value, the corresponding direction is determined, the small control motor 4 is commanded to operate, and the reduction gear 5 and the sector Since the trough I/amount is changed via the lever 30 and the continuously variable transmission device 6, it is possible to reduce the frequency of commands and maintain reliability of operation, and also to reduce the frequency of instructions from the control motor 4 and the reduction gear device 5.
, sector lever 30, continuously variable transmission 6, etc., and the transmission mechanism can be incorporated in a small and compact manner, which reduces the overall cost of the wire diameter machine and improves productivity, making it extremely excellent in practical terms. be.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the invention, and FIG. 1 shows the allowable setting values,
Figure 2 is an outline of the process, Figure 3 is the control instruction system, Figure 4 is an explanatory diagram of the electric circuit of the small motor, Figure 5 is a perspective view of the main parts showing the transmission system, and Figure 6 is the detection). Rampera)・
FIG. In the figure, 1 is a detection unit, 2 is a measuring device, 3 is a control instruction device, 4 is a small motor, 5 is a reduction gear device, 6 is a continuously variable transmission device, 7 is a second to back drum 71 to roller group, 8 9.9' is a calendar roller, 9.9' is 1-Rampetsu I, 30 is a sector lever, and Sl and S2 are finishing slivers.

Claims (1)

[Claims] 1. The thickness of a plurality of finished slivers on the same machine is individually measured, and when the average value falls outside the target range, a small motor rotates in forward and reverse directions accordingly. A method for adjusting sliver unevenness in a wire diameter machine, characterized by changing the draft amount by changing the speed of a continuously variable transmission so that the average thickness of the finished sliver is always within a target range. 2. A measuring device that measures the thickness of each finished sliver passing through the two trumpets facing the calender roller, accumulates and averages the thickness, and a control instruction device that issues an instruction when the measured average value falls outside the set target range. , a small motor that rotates forward and reverse within the range of the set target according to the rotation direction command of the control instruction device, and a continuously variable speed that changes the draft amount by changing the speed of this motor through a reduction gear and a sector lever. A sliver unevenness adjusting device for a wire diameter machine, characterized by comprising: