CN85200127U - Assaying device for spindle rotation rate of twisting frame - Google Patents

Abstract

The utility model belongs to the field of the automatic test of spindle speed in a textile mill. The utility model is characterized in that a Hall element is used as a rotation speed sensor, a single-chip microcomputer is used for processing signals, and the utility model is provided with a set of control circuits for automatically assaying a large amount of spindles of a plurality of twisting machines. When the rotation speed of any one spindle exceeds the limit, the utility model can send out warning signals and display or print the number and the rotation speed of the spindle. The utility model has the advantages of high automatization, high assaying speed, accuracy, reliability and less investment without greatly changing the original machine and affecting the operation maintenance. The principle of the utility model can also be used in microcomputer rotation-speed meters, frequency meters, time-keeping meters, etc.

Description

Assaying device for spindle rotation rate of twisting frame

The invention belongs to textile mills' spindle rotating speed is carried out the touring automatically field of detecting.

The monitoring of spindle rotating speed is sought after in many places of textile industry, at present except that the stroboscope manual detection method of extensive employing, also have two patents of test automatically, the one, Jap.P.: the spy opens clear 54～34429, it is to adopt light transmitting fiber light to be projected on the spindle of high speed rotating, this spindle posts special reflectorized material, reflected light imports to light transmitting fiber and becomes photoimpact in the photoelectric transformer, the photoimpact that detects is input to counting circuit through amplifier, this installation cost height, device is complicated, and the reflectorized material on its spindle is easily washed off, and its reflective function also is difficult to remain unchanged for a long period of time.

Another patent is the US385098 of the U.S., it is to make a call to a hole by the special twisted filament Guan Shangyu axis normal direction of magnetic material; And places an inductive coil to obtain signal on its next door, and the method must laterally be made a call to a hole with the twisted filament pipe, and this is difficult for accomplishing to the very high twisted filament pipe of accuracy requirement, the inductive coil volume is big simultaneously, need self manufacture, time-consuming, the edge is not steep before and after the pulse waveform, need add circuit such as shaping amplification in addition, invest also bigger.

The objective of the invention is to a large amount of spindle rotating speeds are carried out automatic fast inspection, and few to former mechanical alteration, reduced investment.

This device is to adorn a cover Hall integrated circuit speed probe (1) on each spindle, comprise that one is fixed on a little magnet steel that rotates on the spindle and a Hall element that is contained on the frame, the speed cycle signal that records on this sensor is delivered to the signal switch plate (2) that drives the carbon brush rotation by a small machine (6) can will only be sent one of them signal at any one time from 100 spindle signals of a twisting frame and deliver to public photoelectrical coupler (3) and differentiating circuit (4) through the pilot relay of this twisting frame, and then deliver to single-chip microcomputer (5) and handle, obtain the rotations per minute of 4-digit number; And shows with the display (10) of four charactrons, when the rotating speed of certain spindle exceeds the upper lower limit value that is set in advance in the computing machine, the computing machine signal that just gives the alarm, this signal makes sound on the one hand, light warning device (9) action, automatically cut off simultaneously the power supply of switch plate motor again, switch plate is parked on the underproof spindle signalling contact position, there is the indication of spindle numbering this position, after the testing staff writes down its number, one by reset button again, the computing machine signal of can sounding all clear, device just continue to patrol and examine through 7 automatically.After the switch plate of certain twisting frame detects fixed 100 signals, send an endpoint signal by a Hall element that is contained on this switch plate, automatic switch-over circuit (7) just can cut off the pilot relay of this twisting frame and pilot relay and the switch plate motor power that switch plate motor power And connects next twisting frame that needs detection automatically, begin to patrol and examine its 100 spindle rotating speeds, each twisting frame whether participate in detect and the order of detection each other by the testing staff according to the same day practical condition selected with plug.

Because the change of product variety specification, the bound rotating speed of each twisting frame has different selections, therefore on the switch board of this device every twisting frame is provided with the rotating speed bound and selects circuit (8), can select eight kinds of different bound tachometer values; And controls with electronic switch, send into corresponding level signal to microcomputer, when inspection device is gone the rounds this twisting frame, will choose corresponding bound tachometer value automatically according to the signal of being sent into and compare like this.

Compared with the prior art this device has following advantage: test speed is fast, and every twisting frame only needs half a minute, can make the testing staff have enough time to see clearly the displayed value of each rotating speed again; Reading will definitely lean on; Only can detect any platform with a single-chip microcomputer counts twisting frame; Investment economizes; Former machine is not done big change; Used Hall element volume is little, easily installs and changes, and does not influence workman's operation, M R; Used components and parts mostly are cheap, sturdy and durable, the standard component of purchasing easily.

Accompanying drawing is an operation circuit block diagram of the present invention.

This device is used on homemade K091 type twisting frame, and is respond well.

Implement to adopt the rare earth cobalt magnet of homemade CS837 type hall ic and homemade 3.3 * 4 * 1.5mm to make speed probe when of the present invention.About 3～the 5mm of the two distance.

Signal switch plate (2) is made with printed circuit board (PCB), about 20 centimeters of diameter, 100 tach signal contacts on every side evenly distribute, respectively with 100 spindles of every twisting frame on the Hall element output terminal join, interior garden near each signalling contact is a continuous deposited copper garden week band, selects 1 output connection as 100.Switch plate exchanges the low speed servo direct motor drive with homemade SD type.The rotation of this driven by motor one turning handle, two carbon brushes that communicate with each other are equipped with in the turning handle outer end, contact with interior round copper strips with a certain signalling contact of cylindrical respectively, with these tach signal row to the output line that welds with interior circle.

Photoelectrical coupler (3) is formed with general R-C circuit with homemade GD type, differentiating circuit, And diode-isolated negative pulse.

Differentiating circuit is to the forward spike pulse of single chip microcomputer output Fixed width, and its width and amplitude are all irrelevant with tested rotating speed.

Single chip microcomputer (5) is with homemade SCB-35 type single chip microcomputer compoboard.

Display (10) is made up of four seven segment digital tubes.

Printer (11) the little machine of beating of GP-16 type

The rotating speed bound selects circuit (8) to form with one or eight change-over switches and a slice C544 type electronic switch.

The drive motor automatic switch-over circuit is by button, select plug etc. to form by system relay signal lamp and twisted filament machine number.

This device also can make rotating speed gearratio testing arrangement, namely install a Hall element additional at each twisting frame main shaft, the rotating speed And that measures respectively main shaft and each spindle with single-chip microcomputer then calculates the ratio of the two, if this ratio surpasses bound, the transmission mechanism that this spindle then is described has problem, and computer just gives the alarm.

The basic principle of this device also can be used for the single chip microcomputer revolution counter, and frequency meter during survey, is surveyed all instruments, particularly because the single chip microcomputer volume is little, power-saving, replaces present mechanical type hand tachometer so can be used for hand revolution counter.

Claims (3)

1, a kind of device of silk mill twisting frame spindle rotating speed being gone the rounds detection.Form by photoelectrical coupler [3], differentiating circuit [4], single chip microcomputer [5], display device [10], printing device [11], drive motor [6] etc.It is characterized in that: use Hall integrated circuit to make speed probe [1], and by signal switch plate [2] drive motor [6], drive motor automatic switch-over circuit [7], the cover signal that the rotating speed bound selects circuit [8], off-limit alarm device [9], photoelectrical coupler [3], signal differentiation circuit [4], single chip microcomputer [5], display device [10], printing device [11] to be formed automaticallyes switch and treating apparatus.

2, rotating speed data-logger according to claim 1 is characterized in that said Hall integrated circuit speed probe (1) is formed by being fixed on the Hall integrated circuit that rotates the magnet steel on the spindle and be contained on the frame.

3, rotating speed data-logger according to claim 1 is characterized in that said signal switch plate (2) makes with printed circuit board (PCB), and signalling contact is evenly distributed on the garden on week.

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