SU1666602A1 - Machine for measuring and rejecting textile materials - Google Patents

Abstract

The invention relates to mechanical engineering for light industry, namely, measuring and rejection machines for measuring and screening textile roll materials, improves the accuracy of measurement of material parameters and expands technological capabilities. The machine for measuring and rejecting textile materials contains unwinding, winding and transporting rollers, a mechanism for leveling the edges of a material with two plumbers, one of which is located in front of the hopper and the other behind it, in front of an asynchronous material feed mechanism to a measuring conveyor belt. A measuring disk and an electronic device for the dynamic correction of a measuring disk connected to the automated data collection, conversion and transmission path on a computer are mounted on the conveyor belt. A viewing screen is installed behind the measuring belt conveyor for visual detection of defects with a means for determining the coordinates of defects and a device for determining the width of the material. 2 Il.

Description

The invention relates to a mechanical engineering industry for light industry, namely, measuring and rejection machines for measuring and screening textile roll materials.

The aim of the invention is to improve the accuracy of measurement of material parameters and the expansion of technological capabilities.

Fig. 1 shows a schematic of a machine for measuring and rejecting textile materials; in fig. 2 is a block diagram of the connection of a machine with a microcomputer.

The machine for measuring and rejecting textile materials, for example fabric, contains a driven roller conveyor 1, the unwinding rollers of which are coated with a friction material for better adhesion to the fabric.

for example, rubber, and are located relative to each other so that they form an arc of a semicircle whose radius is larger than the radius of the fabric rolls being processed, a frame-type distributor 2 for dubbing fabrics of the entire width range being processed, a straightener 3 with spiral winding, rollers 4 feeding the fabric to the first equalizer 5 of the edge alignment mechanism, accumulator 6 for partial relaxation of the deformation of the transported fabric, second equalizer 7 placed behind the accumulator in front of the feed rollers 8 of the asynchronous hearth mechanism fabric on the measuring tape of the conveyor, with one roller presser and has the ability to facilitate the filling of the machine to move relative to the drive

oh oh oh ho

roller from the control knob. The first equalizer 5 has an alignment factor that characterizes the level of regulation of the material's position, which is at least twice the alignment coefficient of the second equalizer. Behind the asynchronous material feeding mechanism, there is a measuring belt conveyor 9 consisting of three conveyor belts and two drums, a roll 10, a fabric braking device 11 mounted on the inlet section of the viewing screen 12 for visual detection of defects. The viewing screen is provided with two-way lighting. The fabric braking device 11 is necessary to eliminate the influence on the accuracy of measuring the length of the tension of the fabric arising from the winding device and the body weight of the fabric, causing the fabric to skew in place of the fabric coming off the conveyor due to the clamps on the edge of the conveyor belt tape (not shown). A device 13 for measuring the width and a means 14 for determining the coordinates of the flaws are located on the viewing screen. The viewing screen 12 is equipped with rolling rollers 15, a third winding equalizer 16 and a device for winding a fabric onto a winding hollow roller 17. 19, supplying a signal to the length register 20 and the correction register 21, an opaque plate 22 fixed on the measuring conveyor belt 9. Photo sensors of the correction device 23, a mustache Anovanye with a given accuracy at a certain distance, for example 500 mm, are connected to the control unit 24 of the automated data collection path, transform information and transmit it through the multiplexer 25 and interface 26 to the microcomputer 27. The machine also contains a sensor system 28, 29.30 the edges of the fabric in the various parts of its transport that are components of the leveling mechanism. The system 31 of the optocoupler sensors provides control over the presence of the fabric loop before placing it on the measuring tape of the conveyor 9.

The machine for measuring and rejecting textile material works as follows.

Before starting the machine in the nominal mode, the fabric is filled

In its working bodies, the Rollgang 1 allows, without manual tension, to transfer the cloth of fabric through the splitter, or, mine it, if the fabric in the roll is not duplicated, through

the straightener 3 directs the fabric into the drive feed rollers 4, and, skirting the TRP 5, feed it to the hopper 6, where the deformations are partially relaxed and, moreover, it is possible

0 without significant tension, apply fabric to the measuring organs of the machine. The fabric after exiting the accumulator 6, which bends the equalizer 7, is tucked between the rollers 8 of the asynchronous material feed mechanism. In order to smoothly replenish the fabric between the rollers 8, the upper non-driving one is retracted with the handle upwards, and the working state is its position, in which it presses the fabric tightly against the driving gear.

0 roller.

When the fabric is further refilled into the machine, to smooth out the unevenness of its supply and laying on the measured conveyor belt without tension, a loop of sagging from the fabric is created. The presence of which at nominal machine operation is ensured by an asynchronous fabric feeding mechanism and is controlled by system 31

0 optical sensors. The fabric is then laid on the measuring tape under the clips. The clamps provide a secure grip on the edge of the fabric on one side of the conveyor belt. Then the machine switches to working

5 mode for the time required to feed a piece of fabric to the winding roller 17. Turning the machine into operation mode when charging the fabric means turning on all. device systems, except for the device 11, which is switched off for a certain period and does not affect the fabric when it descends onto the viewing screen 12. The braking device is adjustable and, when the machine is operating, acts in such a way that it does not interfere with the movement of the clamps and does not braking on the fabric along the line of their action, and in the rest of the tissue section along its width, the amount of braking increases proportionally to the distance from the clamp placement line. Thus, the braking device eliminates the possible misalignment of the weft yarn of the fabric when it leaves the length measurement zone. After the fabric has disappeared on the viewing screen, the device 11 is put into operation, and the web is led down the screen to the device 13 for measuring the width. The starting point of the fabric length is located on the width measurement line. As soon as the fabric is on this line, at a sensor signal /

The width width is included in the counting device to measure the length of the fabric.

Next, the web is filled through the rolling rollers 15 arranged in such a way that the necessary tension forces of the fabric are created to wind it tightly into a roll on the roller 17.

After refueling, the machine is switched to nominal mode of operation. The fabric unrolled by roller conveyor 1 passes through its technological path of movement through splitter 2, straightener 3 or only through it, if the fabric is not duplicated, feed rollers 4, envelops the working surface of the first equalizer 5, the sensor system 28 controls the position of the edge of the fabric and is directed to drive 6. The peripheral speeds of movement of the rollers of the roller table 1 and the feed rollers 4 are synchronized. The sensor system 28 controls the position of the fabric edge located after equalizer 5 and records the deviation of the fabric in the transverse direction after it leaves the equal surface of the roller to drive 6.

The control signals of the servo system include the working bodies of raven 5, which displaces the tissue in the direction opposite to the actual deviation. Thus, the treated fabric is laid in the accumulator 6 with a flattened edge within the specified process tolerance. In order to more accurately compensate for the remaining skew of the edge, the fabric passes through the second equalizer 7, which tracks its edge, the position of which is monitored by the sensor system 29 of the control.

Equalizers 5 and 7 provide not only parallel laying of the edge with the edge of the conveyor belt, but also ensure that the measuring tape clips hit the edge of the fabric.

The fabric from the relaxator-accumulator 6 is fed to the measuring tape of the conveyor by the rollers 8 of the asynchronous material feed mechanism, which has a separate drive (not shown). The circumferential speed of the feed rollers 8, which operate periodically, exceeds the linear speed of the conveyor belt 9. The sensor system 31, which follows the size of the sagging loop of the fabric, is placed in front of the length measurement mechanism and generates control signals to enable or disable the drive of the feed rollers 8,

which ensures a predetermined and adjustable constant length of the loop and the supply of tissue to the measurement zone with the least deformation.

With the continuous movement of the fabric together with the conveyor belt, linear transformations occur in the length value using a measuring disk 18. The measuring disk 18 has a graduation corresponding to 1 mm of fabric length. Information on the movement of the measuring disk is transmitted to the photo sensor 19, which transmits signals to the length register 20. Further, the information is transmitted through the multiplexer 25 and the interface 26 to the microcomputer 27 to calculate the actual current tissue length via the correction factor. The correction factor or correction factor is calculated as follows. An opaque plate 22 mounted on a belt conveyor 9 of the length measurement mechanism alternately blocks the luminous flux incident on the photosensors of the correction device 23 located at a distance that is a reference for this device. The signals from the photo sensors are fed to the control unit 24 and then to the correction register 21, which counts the number of pulse signals from the photo sensor 19 at the time the plate 22 passes over the photo sensors of the device 23. For example, the number of signals received by the register 21 from the photo sensor 19 during the control period signal of block 24, is equal to p. These signals are transmitted through multiplexer 25 and interface 26 on microcomputer 27. in which the correction coefficient K is calculated.

where 10 is the standard measure of length;

n is the number of signals from the length sensor corresponding to the reference length measure.

The number of signals transmitted through the length register 20 is multiplied by the correction factor K and the actual value of the tissue length passed through the measurement device is calculated.

Simultaneously with the measurement of the length, the width is measured. In this case, the device 13 for measuring the width of the fabric is pre-adjusted to the width indicated on the label of the piece of fabric by moving the block of photocells

for the specified distance. The device determines the amount of deviation of the width of the fabric, both upwards and downwards, regardless of the transverse movements of the fabric within the prescribed limits. In the area of installation of the device 13 on the table of the screening of the fabric, measured stripes are applied both before and after the reference line of the length of the fabric. They are coordinates that correct the locations of tissue defects (means for determining the coordinates of defects).

The coordinates of tissue defects are determined as follows. The fabric is transported across the screen 12, and in the event of a defect on its surface, the machine stops to highlight the boundaries of the tissue defects. Then the fabric is transported until the defect falls into the area of the device 13. The measuring strips of the device help to determine the distance of the defect to the line of the beginning of the measurement of the length of the fabric, i.e. that value of the length of the fabric that is currently fixed by the counting device. Fixing the deviations of the width of the fabric is made on the same line. Thus, the current tissue width values correspond to the current tissue length value.

Further, the fabric, passed through the rolling rollers 15 and equalizer 16, is wound with tension in a roll. When measuring and rejecting a fabric, technological information is required, it goes to the microcomputer 27, where the electronic passport of the piece is formed. At the end of the process, an array of generated data is printed as output.

Claims (1)

Invention Formula Machine for gauging and rejection textiles containing unwinding, winding and transporting rollers, a mechanism for leveling the edges of the material, a drive, a measuring tape conveyor with a measuring disc for measuring the length of the material, a viewing screen for visual identification of defects, and a device for printing the read information, which is improving the accuracy of measuring material parameters and expanding technological capabilities; it has an electronic device for dynamically correcting the readings of a measuring disk, a mechanism for asynchronous material feeding to a measuring tape conveyor and a device for measuring the width of the material located at the viewing screen and means for determining the coordinates of defects, while the edge alignment mechanism The material contains two equalizers, one of which is placed in front of the drive, and the other between the drive and the asynh mechanism the material supply, the first equalizer has an alignment factor greater than at least twice the alignment coefficient of the second equalizer, and the printing device is equipped with a computer and an automated data collection, conversion and transmission path on the computer. YU eleven 12 tt 29 1 9 L Shchi g i 27