JP2892356B2 - Temperature control device for wet split rod of gluing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature control device for a wet split rod that splits and inserts undried warp yarns in a warp yarn sizing machine.

Prior art In a warp yarn sizing machine, etc., the undried sheet-shaped warp yarn that has been glued is divided into a plurality of upper and lower parts by appropriate dividing rods, and further divided into a large number in the horizontal direction by comb wings to prepare a yarn row, and dried. They are introduced into a chamber and dried.

In this case, the dividing rod has a hollow tubular shape, and circulates cold water therein to cause dew condensation on the surface of the dividing rod due to a temperature difference from the outside air, thereby reducing the frictional resistance between the yarn and the dividing rod, It is known from Japanese Utility Model Publication No. Sho 56-1754 and Japanese Utility Model Publication No. 48-9149 to make traveling smooth and reduce fluffing and yarn breakage.

In this case, the temperature and flow rate of the cooling water flowing through the wet dividing rod are manually set so that an appropriate wet state is obtained on the surface of the wet dividing rod, that is, an appropriate amount of dew is obtained. However, the surface of the wet split rod changes its wet state during the day due to morning, noon, evening times and weather changes.

If the surface of the wet split rod is too dry, the warp yarn and the wet split rod will stick together at the time of stop, causing thread breakage at the time of restarting, and glue on the surface of the wet split rod that the yarn does not touch during operation. Problems such as sticking and growing to induce yarn breakage occurred.

Conversely, if the wet split rod is too wet, water droplets will be generated on the surface, which will adhere to the warp yarn and change the gluing state,
There were problems such as non-uniform adhesion of glue.

In this way, in the case of hot air drying in the next step, the wet dividing rod is used to increase the drying efficiency by widening the interval between the yarns in the vertical direction, prevent entanglement between the yarns, and even in the case of cylinder drying when there are many yarn sheets. Since the yarns which have been overlapped at the gluing portion and glued and squeezed are more intimately adhered to the glue liquid, it is desirable to always use the yarn in an appropriately moist state in order to remove it once.

In the conventional wet split rod temperature control device, the cooling water circulating in the split rod was manually operated by a valve, the amount of water was adjusted, and the wet state of the rod surface was managed.
There is a problem that it is difficult to keep the surface of the wet split rod in a constant wet state.

The object of the present invention is to solve the above-mentioned problems, and controls the cooling water circulating in the wet dividing rod in accordance with the state of the atmosphere around the rod, and always keeps a constant dew condensation amount. Is obtained on the surface of the wet dividing rod to prevent overdrying and overwetting.

According to the present invention, a detecting means observes the state of the atmosphere in the vicinity of a wet dividing rod, and in accordance with the result, a temperature command circuit determines a surface temperature of the wet dividing rod necessary for obtaining a predetermined dew amount. The water temperature of the cooling water is adjusted to match the command temperature in accordance with the command value, so that the amount of dew condensation on the surface of the wet split rod is always constant.

As a result, a predetermined amount of dew is always obtained on the surface of the wet dividing rod even if the air condition of the outside air changes.

Examples Hereinafter, examples of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a part of a sizing and drying process for carrying out the present invention.

The warp sheet 1 drawn from a beam or the like is guided to a sizing box 5, immersed in a size liquid by an immersion roll 2, squeezed by a squeezing roll 3 and a sizing roll 4, and
And sent to the dryer 23 in an aligned state.

FIG. 2 is a configuration block diagram of a temperature control device showing one embodiment of the present invention.

The wet dividing rod 6 is formed in a hollow tubular shape, and is configured so that cooling water is circulated therein by a pump 7 and a cooler 8. Further, a sensor 9 is provided for detecting a dew point near the wet dividing rod 6.

The sensor 9 detects the relative humidity near the wet split rod 6,
Temperature can be measured. A dew point detector 10 detects a dew point near the wet dividing rod 6 based on a signal from the sensor 9. The detected content is output to a temperature command circuit 25 including the subtractor 11 and the correction temperature setting device 12.
That is, the output of the dew point detector 10 is input to the subtractor 11. The set output from the correction temperature setter 12 is also input to the subtractor 11, and the difference output is input to the temperature adjuster 13. The dew point detected by the dew point detector 10 is 10 [° C]
If it is known that the temperature required to obtain the predetermined amount of dew at this time is 8 [° C.],
The correction temperature setter outputs a value of 2 [° C.] to the subtractor 11.

As a result, a signal corresponding to 8 ° C. is input to the temperature controller 13, and the cooler 8 adjusts the temperature of the circulating cooling water in accordance with the signal from the temperature controller 13, The surface temperature of the rod 6 is set to 8 [° C.].

In this way, the cooling water is cooled so that the temperature of the cooling water becomes equal to the command value of 8 ° C., so that the flow rate of the cooling water is sufficiently large so that the surface temperature of the wet split rod 6 becomes equal to this. Must be set.

The correction temperature k set by the correction temperature setting device 12
Is fixedly set, or preferably, is set in advance in accordance with the dew point detected by the dew point detector 10, and the correction value is automatically output to the subtractor 11 in accordance with a signal from the dew point detector 10. You may comprise so that it may be.

In this way, the water temperature is adjusted to match the command temperature, and a desired amount of dew is generated on the surface of the wet dividing rod 6.

FIG. 3 illustrates the above-described operation, in which a command is issued as a temperature value lower than the dew point detected by the dew point detector 10 by the correction temperature k, and as a result of controlling the cooler based on this command value, This shows a state where a predetermined amount of dew is obtained.

As described above, the correction temperature k is set in advance to a value at which a desired amount of dew is obtained. Strictly speaking, in order to obtain the same amount of dew, it is necessary to increase the correction temperature as the dew point becomes lower. Therefore, it is desirable to automatically output the correction temperature corresponding to the dew point as described above.

FIG. 4 is a block diagram showing another embodiment of the present invention. In the case of the present embodiment, the surface temperature of the wet dividing rod 6 is adjusted to a desired command temperature while adjusting the flow rate instead of directly changing the temperature of the cooling water and indirectly changing the temperature of the cooling water. I have to.

After the temperature command signal from the temperature command circuit 25 is once input to the flow controller 17, the throttle control of the flow control valve 18 is performed to control the flow rate of the cooling water in the circulation path. That is, when the command temperature is low, the opening of the flow rate regulating valve 18 is controlled to increase, and when the command temperature is high, the opening is controlled to decrease.

In the case of the embodiment shown in FIG. 4, a temperature sensor 14 for measuring the surface temperature is provided on the surface of the wet dividing rod 6, this temperature is actually measured, and a commanded temperature is set via a temperature detector 15. The control operation is stabilized by the feedback control. That is, the surface temperature of the wet split rod 6 from the temperature detector 15 is controlled by the subtractor 16 so as to match the command temperature, and is input to the flow controller 17.

Next, FIG. 5 shows still another embodiment of the present invention, in which the temperature control of the surface of the wet dividing rod is performed by controlling the discharge amount of the pump 7. That is, the output of the flow rate flowr 17 is output to the pump 7 via the variable speed motor 19.

If the command temperature is low, increase the rotation speed of the motor 19,
The command temperature is realized by increasing the discharge amount of the pump 7. Conversely, when the command temperature is high, the rotation speed of the motor 19 is reduced, and the discharge amount of the pump 7 is reduced to obtain a desired command temperature.

In the embodiment described above, a configuration is employed in which a temperature lower than the dew point obtained by the dew point detector 10 by a predetermined correction temperature k is output as a command value. But,
With such a configuration, the obtained dew amount is not always constant.

Therefore, in order to always obtain a constant dew amount, it is also possible to set the dew amount W in advance as shown in FIG. 7, detect the absolute humidity, and calculate a command value corresponding thereto.

In this case, as shown in FIG. 6, an absolute humidity detector 20 is provided in place of the dew point detector 10 which is a detecting means for measuring the state of the atmosphere, and a correction temperature setting device constituting a temperature command circuit 25 is provided. This can be realized by providing an arithmetic unit 21 and a condensation amount setting unit 22 in place of 12 and the subtractor 11, and using the output from the arithmetic unit 21 as a temperature command value.

In any case, the state of the atmosphere is ultimately obtained by directly measuring the absolute humidity or dew point around the wet dividing rod 6, or indirectly from the temperature and humidity of the air.

Effect of the Invention In the present invention, the state of the atmosphere in the vicinity of the wet split rod is detected, the surface temperature of the split rod required to obtain a predetermined amount of dew condensation is determined from the detected value, and cooling is performed to reach the determined temperature. Since the water temperature of the water is adjusted, a constant amount of dew is always obtained on the surface of the split rod, eliminating the drawbacks of yarn breakage and non-uniform glue adhesion and supplying warp yarn of stable quality. I can do it.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing an arrangement around a gluing machine in which the present invention is to be implemented, FIG. 2 is a block diagram showing a configuration of an embodiment of the present invention, and FIG. 3 is an apparatus shown in FIG. FIG. 4 is a block diagram showing another embodiment of the present invention, FIG. 5 is a partial block diagram showing another embodiment of the present invention, and FIG. And FIG. 7 is a diagram for explaining the operation of the embodiment shown in FIG. 1 ... warp sheet, 6 ... wet split rod, 7 ... pump, 8 ... cooler, 9 ... sensor, 10 ... dew point detector, 12 ... correction temperature setting device, 13 ... temperature controller ,14……
Temperature sensor, 15 Temperature detector, 17 Flow regulator, 18
…… Flow control valve, 19… Motor, 20 …… Absolute humidity detector, 21… Calculator, 22… Condensation amount setting unit, k …… Correction temperature, W …… Condensation amount, 25 …… Temperature command circuit.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) D06B 23/06

Claims (3)

(57) [Claims] 1. A sizing machine in which a wet split rod for dividing and inserting an undried warp yarn sheet to be glued is formed in a hollow tubular shape, and cooling water is circulated therein to cause dew condensation on the rod surface. Detecting means for measuring the state of the atmosphere in the vicinity of the split rod, a temperature command circuit for outputting the surface temperature of the wet split rod required to obtain a predetermined dew amount from the measurement result as a command temperature, and a temperature of the cooling water. A temperature controller for a wet split rod of a sizing machine, further comprising a temperature controller for adjusting a water temperature so as to match the command temperature. 2. A temperature control device for a wet dividing rod of a sizing machine according to claim 1, wherein said temperature controller controls a cooler of said cooling water. 3. The temperature control device for a wet dividing rod of a sizing machine according to claim 1, wherein said temperature controller controls a flow rate of said cooling water.