RU30758U1 - Device for controlling the process of winding threads on a partion warping machine - Google Patents

Abstract

A device for controlling the process of winding threads on a partial warping machine, comprising a guide, warping and rolling shafts, a system of three rollers, two of which are tension and a third regulating and associated with the control unit, characterized in that both the tension and regulating rollers are installed with the possibility rotation, while the inputs of the control unit are connected to the speed sensor of the warmer shaft, to the speed sensor of the rolling shaft and the system for entering information about the technological process regulations oatsa.

Description

2602132707

MPKV 02 N 13/00

Device for controlling the process of winding threads on a partion warping machine

The utility model relates to the textile industry, in particular, to the preparatory department of weaving and can be used to control the process of winding threads on a partion warp machine.

A known system of group automatic control of the tension of the threads 1, in which the regulator is installed between the reed and the measuring roller warping machine. It consists of two motionlessly fixed rollers and a non-rotating roller moving in vertical guide slots of the brackets. Ball bearings are installed on the roller, due to which friction is prevented from sliding it in the slot and which prevent the roller from turning around its axis. The system of automatic adjustment of the tension of the thread includes a roller on which one end of the inextensible cable is fixed, the second end of which is attached to the axis of the movable roller. A working cam is installed on the axis of the roller, at a large radius of which a cable is fixed, embracing it, and a load is suspended at the free end of the cable, the weight of which can be changed. Changing the tension of the threads causes a vertical movement of the roller in the guides, which, in turn, causes a change in the angles of coverage of the rollers with threads.

The tension control system, consisting of three non-rotating rollers, is a group multiplicative thread tensioner, in which the increment of the output tension is proportional to the input. The root-mean-square deviation (s.c.o.) of the tension of the threads after such a tensioner increases and is: (l + kt), where SQ is the s.c.o. tension at the input of the thread tensioner, kt is the relative increase in tension. Therefore, after passing through the multiplicative controller, the unevenness of the thread tension along the width of the warp shaft increases, which negatively affects the warping process itself, the subsequent technological processes of sizing and weaving, and ultimately, the quality and cost of finished products.

A device 2 is adopted as a prototype, in which, before winding on a thread, they pass through a tension compensation zone formed by two fixed tension rollers, between which there is a movable tension roller, lying flat on the threads. A fixed guide is installed between the bulk and the tension zone; a roller that is rotating due to the friction of moving threads against it. A movable tension roller moving in a vertical plane is kinematically connected to a sensor monitoring the change in thread tension. The sensor is blocked with a converter of incoming signals about a change in thread tension. From the converter, the generated signals enter the recording device and the control unit. The drive mechanism is equipped with an output shaft transmitting rotation to the Navoi shaft. A device is located on the output shaft of the drive mechanism by which it is braked by the bulk when the diameter of the winding increases (upon receipt of a signal of a given value from the control unit).

However, this device, compensating for the change in the tension of the threads as the supply packages are triggered, increases the unevenness of the tension of the threads along the width of the warmer shaft, due to the rigid installation of the tension rollers, which leads to various geometric and structural defects of the winding (tuberosity, non-circularity, non-cylindrical packaging), to the diversity of the threads on the warp shafts of one batch, which, in turn, increases the breakage and the number of burns in dressing and weaving.

The technical result consists in the possibility of forming identical warp packages with predetermined parameters and eliminating waste soft yarn in sizing.

The specified technical result is achieved by the fact that in the device for controlling the process of winding threads on a batch warp machine containing guide, warp and roll shafts, a system of three rollers, two of which are tensioners, and the third one is regulating and connected to the control unit, according to the utility model, the tension and control rollers are rotatably mounted, while the inputs of the control unit are connected to a speed sensor of the warmer shaft, to a speed sensor of the roll shaft and Istemi input on the regulations of the process information.

In FIG. 1 shows a functional diagram of a device for controlling the process of winding threads on a partion warping machine.

The device contains three rollers 1, 2, 3, located between the creel and the warping machine and mounted for rotation, two of them 1 and 2 - tension, the third 3 - regulating - kinematically connected with the motor shaft 4, the control unit 5 connected to the system enter information about the regulations of technological process b, with a speed sensor 7 of the warping shaft 8 and a speed sensor 9 of the driving shaft 10, a guide shaft 11 located directly above the warping shaft 8 and mounted for rotation.

The warp threads 12 round the rollers 1, 2, 3 and the guide shaft 11, bringing them into rotation due to friction forces, and are wound on the warping shaft 8. In addition to adjusting the tension, the rotating rollers 1, 2, 3 filter the oscillations of tension, reducing the relative amplitude vibrational component and coefficient of variation of tension 3, which contributes to a smoother movement of the threads and their uniform layout on the warp package. As the operating time of the warp shaft 8, the control unit 5 determines the current diameter of the winding, using information from sensors 7, 9 about the rotation angles of the rolling 10 and warp 8 shafts, compares it with an ideal one calculated for a certain linear density and length of threads, and using engine 4 controls the rotation of the roller 5, accelerating or braking it, due to which the tension of the threads changes and the required winding density of the warp package is achieved. The proposed device by measuring the current diameter of the winding monitors the change in the tension of the threads as the supply packages are triggered (not shown in the drawing), adjusts it using a system of rollers 1, 2, 3, and also compensates for the discrete change in the clamping force of the roll shaft 10, which entails change in winding density also by adjusting the tension. In non-stationary modes of operation (starting and stopping the machine), the threads wound on the warping shaft 8 are subjected to sharp jerks of tension, causing the package to deform. The greater the number of stops during the operating time of one warping shaft 8, the greater the deformation will be received by the package, the greater will be its winding density, and the more it will differ from other packages in the batch, which will entail the length of the threads and an increase in burning in sizing. The proposed device will align the density of the winding by adjusting the tension of the threads.

Sources of information:

1. The author's certificate of the USSR No. 246408, IPC D 02 N 13 / 00.1969

2.Pat. Japan No. 58-7746, IPC D 06 B 3/36, D 02 H 5/02, 1975

3.Kulida N.A. Systematization of parameters and characteristics of tensioning devices // Izv. universities. Technology of the textile industry. - 2001.

No. 4.-C. 25 ... 29.

Claims (1)

A device for controlling the process of winding threads on a partial warping machine, comprising a guide, warping and rolling shafts, a system of three rollers, two of which are tension and a third regulating and associated with the control unit, characterized in that both the tension and regulating rollers are installed with the possibility rotation, while the inputs of the control unit are connected to the speed sensor of the warmer shaft, to the speed sensor of the rolling shaft and the system for entering information about the technological process regulations oatsa.