JPH0319954A - Stretch control device in sizing dryer - Google Patents

Abstract

PURPOSE:To improve reliability of operation by automatically selecting the ratio of revolving speed of driving roll and driving cylinder, transporting facial arranged yarn, based on a stationary or nonstationary stretch mode signal outputted by a stretch setting device and preventing yarn disorder. CONSTITUTION:In a sizing dryer, the ratio of driving roll and driving cylinder transporting a great number of yarns arranged in a facial state is selectively changed based on a stationary stretch mode signal suitable during heat generation of drying part outputted by a stretch setting device linked to a heat source switch of the drying part, a temperature sensor of the drying part or a starting mode switch necessarily to be turned on and off before and after threading or on a nonstationary stretch mode signal suitable during temperature reduction. Occurrence of yarn slackness, entanglement and end breakage resulting from mode setting errors is suppressed.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a stretch control device for a sizing dryer, and more specifically, a stretch control device for a sizing dryer that automatically stretches the drying section of the sizing dryer depending on the presence or absence of heat generation from a drying heat source. This relates to a new device that allows for automatic operation. [Prior art and technical problems to be solved] As is well known, in a sizing dryer, a large number of threads are aligned in a plane and conveyed while sizing and drying. In the process of processing, it is ideal to wind the aligned yarn onto the take-up beam with the minimum appropriate tension and without changing the tension as much as possible in order to guarantee the strength and elongation of the yarn. It is. For this reason, by making the rotation speeds of the drive rolls, drive cylinders (drying cylinders), etc. that move and convey the aligned yarns different, the rotation speed ratio between the drive rolls, drive cylinders, etc. can be changed using a continuously variable transmission. By adjusting the speed at , appropriate tension is applied to the alignment threads interposed between each rotating member. Hereinafter, in this specification, this rotational speed ratio will be referred to as stretch. However, the glued aligned threads expand and contract significantly depending on the temperature at which they are heated. Therefore, during steady operation of the sizing dryer, a small stretch is applied in the drying section in consideration of the large shrinkage of the aligned yarns due to drying. In some cases, a negative stretch is applied such that the rotation speed of the drive roll or cylinder on the downstream side is smaller than that on the upstream side.

However, when a sizing dryer is loading yarn, the heat source of the drying section is generally turned off, so if the drying section is stretched in the same way as during normal operation, it will not line up as it would during normal operation. Since the threads do not shrink, the aligned threads become loose, and not only will appropriate tension not be applied, but the loose threads will become entangled, resulting in thread breakage.
Therefore, at the site where the sizing dryer is actually operated to process the aligned yarn, the operator controls the machine using a small stretch setting for steady operation, depending on the operating conditions during steady operation and when the yarn is in progress. The machine was operated by switching between a steady stretch mode, in which the machine was operated, and an unsteady stretch mode, in which the machine was controlled with a large stretch setting when the thread was being loaded. However, when the temperature in the drying section is dropping, as when the yarn is being loaded, the person in charge misunderstands that the temperature has risen to the appropriate drying temperature and selects the steady stretch mode, or conversely, the drying section is not drying properly. It was easy for the person in charge to accidentally select the unsteady stretch mode even though the temperature had been reached, resulting in operational errors and damage to the yarn.

The present invention has been made in view of the above-mentioned problems associated with the operation of a glue dryer. The technical problem is to provide a dryer with an attached dryer.

[Means adopted to solve the problem]

The present invention is based on the technical premise of a conventionally known sizing dryer that sizing and drying a large number of threads aligned in a planar manner, and the present invention is based on the rotation of a drive roll or a drive cylinder that moves and conveys the planarly aligned threads. Whether to drive the speed ratio in a steady stretching mode that is suitable for when the drying section generates heat, or in an unsteady stretching mode that is suitable for when the temperature of the drying section is falling,
A stretch control means is adopted that enables execution by selecting a steady stretch mode signal output from a stretch setting device or an unsteady stretch mode signal, and this stretch control means is faithfully controlled depending on the presence or absence of drying heat in the drying section. By linking with heat source operation reflection means such as a heat source switch and temperature sensor, the system automatically switches between a steady stretch mode that is suitable for when the drying section generates heat, and an unsteady stretch mode that is suitable for when the temperature of the drying section is falling. We have created a glue dryer that you can definitely choose. [Examples] The present invention will be described in more detail below based on examples shown in the accompanying drawings. Fig. 1 is a wiring diagram showing the main parts of the first embodiment of the present invention, Fig. 2 is a block diagram showing the second embodiment using a temperature sensor, and Fig. 3 is a stretching diagram using the temperature sensor in the second embodiment. A block diagram of the selection mechanism is shown. 'J! Example 1 (see figure Jll): First, to explain the first example, what is indicated by the symbol l is a stretch setting device, and it is in a steady operation stretch mode that sets a stretch that is appropriate when drying heat is generated in the drying section. a setting device l1, and an unsteady operation stretch mode setting device 12 that sets a stretch that is adapted to when the temperature of the drying section drops.
This is because of this. The reference numeral 2 indicates a relay switch, and one input contact 2l of this relay switch 2 is connected to the steady operation trench mode setting device 11, and the other input contact 22 is connected to the non-operation mode setting device 11. A steady operation stretch mode setting device 12 is connected. The movable contact 23 of the relay switch 2 is connected via a relay 24 to a power supply switch Hs for a heat source in a drying section (hot air dryer and cylinder dryer) not shown in FIG. When Hs turns ON, relay 24
The movable contact 23 of the relay switch 2 selects the contact 21 via the relay switch 2, and the relay switch 2 outputs the steady stretch mode signal sent from the steady operation stretch mode setter 11, while when the power supply switch Hs is OFF, relay 24
The movable contact 23 selects the contact 22 by the action of , and the relay switch 2 outputs the unsteady stretch mode signal sent from the unsteady operation stretch mode setting device 12 . Thus, in the device of the first embodiment, the gear ratio adjustment mode and the transmission operate based on the steady or unsteady stretch mode signal output from the relay switch 2. The rotational speed ratio (omitted in the figure) is maintained at the required value. 2nd example (see figure jll2 and 31!l): 2nd
In the figure, the symbol P indicates a continuously variable transmission, which is located at locations where the moisture content and hot water temperature frequently fluctuate in the path for conveying a large number of alignment threads W arranged in a planar manner (size box S , hot air dryer H, cylinder dryer C, etc.) or the drive shaft of the drive cylinder.
D! '), D, and D4, and the rotation of the main motor M is transmitted at a variable speed through these continuously variable transmissions P-P, and the drive rolls and drive cylinders are controlled at the required speed. Rotate to apply appropriate tension to the alignment thread W.

Next, what is designated by the symbol PG, -4 is a yarn speed detector disposed before and after each of the above-mentioned continuously variable transmissions P-P, and each of the above-mentioned drive shafts D1 (D1D!' )・D,
- By measuring the rotational speed of D4, the yarn speed at the relevant location is detected.

Therefore, to explain the device of the second embodiment, the drive shaft of the drive roll (D!
・Speed detector PG that detects the feed speed of the alignment yarn W of Dt')! The rotation speed ratio detected by the speed detector PG, which measures the rotation speed of the drive cylinder ci (drive shaft Ds) of the cylinder dryer C, is input to the stretch detector S, and the rotation speed ratio between the drive roll and the cylinder C3 is inputted to the stretch detector S. The current stretch signal in between is processed. This current stretch signal is then input to comparator K. On the other hand, this comparator K has a steady stretch mode setter 1.
Either the steady stretch signal sent from the stretch detector 1 or the unsteady stretch mode signal sent from the unsteady stretch mode 12 is input, and the current stretch signal input from the stretch detector S is It will be compared. In this second embodiment, the selection of whether the stretch mode signal input to the comparator K is steady or unsteady is performed by the selector shown in FIG. 3 as follows. This selector E consists of a temperature sensor is (also shown inside the hot air dryer in Figure 2) that detects the current temperature of the target device and outputs a current temperature signal X with a potential value proportional to the current temperature, and a setting a temperature setting device 25 that outputs a set temperature signal Y having a potential value corresponding to a predetermined set temperature, and the temperature sensor T.
, and the temperature setting device 25, and compares the values of the current temperature signal Relay driver 2 that amplifies and outputs
7 and the movable contact 2 of the relay switch 2' depending on the nature of the selection command signal amplified by the relay driver 27.
A relay 24' is connected in a circuit to drive the terminal 3' and contact either the fixed contact 21' or 22'. In this second embodiment, the temperature sensor T is disposed inside the hot air dryer H as shown in FIG. The fixed contact 22' of the relay switch 2' is selected via the terminal 24'. In the second embodiment, the fixed contact 21' is connected to the steady operation stretch mode setting device 1l of the stretch setting device 1, and the fixed contact 22' is connected to the unsteady operation mode setting device 12. Therefore, when the fixed contact 22' of the relay switch 2' is selected, the unsteady stretch mode signal is input to the comparator K that compares the stretch signals mentioned above. Thus, when the unsteady stretch mode signal is input to the comparator K in FIG. 2, this unsteady stretch mode signal is compared with the current stretch signal from the stretch detector S, and the comparator K The deviation value of both signals is calculated and sent to the driver 31 of the controller 3. Upon receiving the deviation value signal, the driver 31 issues a speed control signal with a value that eliminates the deviation, drives the gear ratio adjustment motor 32, and adapts to the unsteady operation. Change the gear ratio of continuously variable transmission P (PIV.) so that stretch occurs
In one section, the drive shaft (D..D■') of the drive roll disposed inside the size box S and the drive cylinder C..D of the cylinder dryer C. (drive shaft D3). The control drive process is the same when the relay isolator 2' is driven in the steady operation mode by selecting the fixed contact 21', that is, the steady operation stretch mode setting device 1l. The signal output from the steady operation trench mode setting device 11 is the standard. The above explanation was about controlling the stretch between the drive shaft (DvDt') and the drive shaft D, but in FIG. 2, the stretch between the drive shaft D and the drive shaft D is also controlled. It is also controlled by a structured circuit. Although the embodiments illustrated in this specification are generally structured as described above, the present invention is by no means limited to the above embodiments, and various design changes may be made within the scope of the claims. For example, in a sizing dryer that includes a mechanism for controlling the rotational speed ratio of a drive roll or a drive cylinder that moves and conveys the planar aligned yarn using a stretch setting device, the heat source can be turned off.
If there is a work-in-process mode switch for operating the machine in the state of O
Design changes such as switching and selecting the steady mode during heat generation in the case of FF can be adopted as appropriate according to specific manufacturing requirements! Yes, it must be said that it naturally falls within the technical scope of the present invention. [Effects of the present invention] As explained above using the examples, in the glue dryer manufactured by applying the present invention, the drying heat source can be turned on and off.
The stretch setting device is linked to a power-on switch that turns on the wind, a temperature sensor built into the drying section (e.g., hot air dryer, cylinder dryer), or a device mode switch that is always turned on and off before and after setting the thread. The system employs a system that appropriately automatically controls the rotational speed ratio of the drive roll and drive cylinder that move and convey the aligned yarn, eliminating operational errors caused by misunderstanding the operating mode that frequently occur in conventional sizing dryers. This makes it possible to effectively suppress phenomena such as yarn loosening, entanglement, and yarn breakage in the drying section.In addition, since the stretch setting device and the state of the drying heat source are linked, setting errors and There are no problems caused by forgetting to change the stretch setting when setting the thread or forgetting to return the stretch setting during steady operation. As described above, according to the present invention, the operational reliability of the sizing dryer can be greatly improved and the labor burden on the operator in charge can be reduced, and yarn damage caused by mode setting operations can also be greatly suppressed. The industrial benefits are extremely large.

[Brief explanation of drawings]

FIG. 1 is a wiring diagram showing the main parts of the first embodiment of the present invention, and FIG.
The figure shows a block diagram of a second embodiment using a temperature sensor, and FIG. 3 shows a block diagram of a stretch selection mechanism using a temperature sensor in the second embodiment. 1.- Stretch setting device, 1l/Constant operation stretch mode setting device, 12-11 Unsteady operation stretch mode setting device, 2 (2')--
- Relay switch, 21, 22 - one fixed contact, 23 - one movable contact, 24
−・−Relay. E--1 selector, Hs--1 power supply switch, Ts.
−・Temperature sensor

Claims (4)

[Claims] (1) In a sizing dryer that sizes and dries a large number of yarns aligned in a plane, the rotational speed ratio of the drive roll and drive cylinder that move and convey the planar aligned yarn is determined by the heat generation of the drying section. Whether to drive in a steady stretch mode suitable for the drying area or in an unsteady stretch mode suitable for when the temperature of the drying area drops.
Execution is enabled by selecting a steady stretch mode signal or an unsteady stretch mode signal output from the stretch setting device, and the selection of each stretch mode signal output from the stretch setting device is made possible by turning on the drying heat source of the drying section. - A stretch control device for a pasting dryer characterized by being linked to OFF. (2) The stretch control device for a glue dryer according to claim (1), wherein the selection of the steady/unsteady stretch mode signal output by the stretch setting device is linked to ON/OFF of a power supply switch of a drying heat source. (3) Select the steady/unsteady stretch mode output from the stretch setting device by turning the in-process mode switch ON/OFF.
The stretch control device for a pasting dryer according to claim 1, wherein the stretch control device is linked to F. (4) In a sizing dryer that sizes and dries a large number of threads aligned in a plane, the rotational speed ratio of the drive roll and drive cylinder that move and convey the planar aligned threads is determined by the heat generation of the drying section. Whether to drive in a steady stretch mode suitable for the drying area or in an unsteady stretch mode suitable for when the temperature of the drying area drops.
This is made possible by selecting a steady stretch mode signal or an unsteady stretch mode signal output from the stretch setting device, and the selection of each stretch mode signal output from the stretch setting device is performed by detecting the temperature of the drying section. The glue is linked to a selector that includes a temperature sensor, and can be switched between a steady stretch mode when heat is generated and an unsteady stretch mode when the temperature drops in response to the temperature of the drying section. Stretch control device in attached dryer.