CN2077870U

CN2077870U - Electric stripper for carding machine

Info

Publication number: CN2077870U
Application number: CN 90218294
Authority: CN
Inventors: 丁明华; 侯方
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-08-24
Filing date: 1990-08-24
Publication date: 1991-05-29

Abstract

The utility model discloses an electric stripper for carding machines, which is a matched device with a carding machine. The electric stripper for carding machines overcomes the defects of the currently mechanical strippers, utilizes an electronic control device to control a step motor to repeatedly move, and directly drives the stripper to swing. The step motor adopts the high motion frequency and fine-toothed moment shape optimally. The designed control circuit is composed of a main circuit, a signal system and an executive element, wherein, the signal system is composed of a pulse generator, a counter, a distributor, an encoder and a phase inverter. The electric stripper for carding machines can arbitrarily regulate the swing frequency of the stripper. The utility model has the advantages of high precision, high reliability, simple structure and convenient operation. The electric stripper for carding machines can be directly used for home-made BC272 type and BC274 type and all imported carding machines.

Description

Electric stripper for carding machine

The utility model is the combing machine for fur corollary apparatus.

Combing machine for fur die device is the complicated mechanical system at present.Die device as new type domestic BC274 type combing machine for fur is formed " mechanical type die fuel tank assembly " by 25 parts, its governing speed difficulty, number of oscillations has directly limited the sliver exporting speed of combing machine for fur to greatest extent at 1200 times/minute, and poor reliability, life-span is short, noise is big, need regularly refuel maintenance, requirement on machining accuracy height when it is made, cost is big, complex process.

The purpose of this utility model is to replace the mechanical device that falls behind with high-performance, low cost, high reliability, low cost of use and the electrical installation being convenient to operate.

Structure of the present utility model and operation principle are for directly driving the die action with electronic-controlled installation control step motor.Electronic-controlled installation is imported the corresponding electric current that alternately changes according to the characteristic of the stepper motor of selecting for use respectively to its each winding, the reciprocal rotation that makes stepper motor produce the certain angle scope, thus drive the die swing.Can regulate die hunting frequency and amplitude (referring to Fig. 1 by regulating electronic-controlled installation.Basic schematic diagram).

For improving wobble accuracy and swing speed and overcoming the machinery inertial of die, preferably adopt the stepper motor of the high operating frequency of serration torque type.Stepper motor can be 5 and makes mutually, also can be 3 and makes mutually.

Electronic-controlled installation can have different circuit design.Circuit design should satisfy: (1) voltage request; (2) sinusoidal shape operating frequency changes requirement; (3) edge requires before and after the waveform; (4) in time change the energising phase sequence by the swing requirement; (5) frequency, power-up sequence, pulse duty factor, voltage are adjustable within the specific limits; (6) the each good reproducibility of position and swaying direction, pendulum angle when initial of die; (7) mains fluctuations, interference, ambient temperature and humidity variation there is enough adaptability.

Circuit design should be considered to change a little and can adapt to varying number, size loads.But design circuit makes same electronic-controlled installation can carry out the control of multiple electric motors simultaneously.

Control circuit can be made of (referring to Fig. 2 major loop, control signal system, executive component.The control circuit schematic diagram).

The design people is to visible Fig. 3 of control circuit of the electronic die device design of the basis of selecting the three-phase system stepper motor for use. the control circuit block diagram.This circuit each several part designs among visible Fig. 4-9 schematic diagram separately.The control signal system here is made up of impulse generator (starting impulse generator, operation impulse generator), enabling counting device, operation counter, distributor, decoder, phase inverter.According to same principle, it is applicable different stepper motor and die system that circuit or its parameter are changed a little.

The utility model can directly be used on homemade BC272 series and BC274 comber and all import combing machine for furs.It can at random regulate the die hunting frequency at any time, solved critical problem for improving the combing machine for fur sliver exporting speed, and have precision height, good reliability, manufacturing is simple, cost is low, simple in structure, Installation and Debugging and characteristics such as working service is easy, highly versatile, noise are low.

The description of the drawings: Fig. 1 is a basic schematic diagram of the present utility model, Fig. 2 is a kind of control circuit schematic diagram, Fig. 3 is the control circuit block diagram of design, Fig. 4 is the major loop schematic diagram, and Fig. 5 is the executive component schematic diagram, and Fig. 6 is the impulse generator schematic diagram, Fig. 7 is distributor, decoder, phase inverter schematic diagram, Fig. 8 is operation counter schematic diagram, and Fig. 9 is an enabling counting device schematic diagram, and Figure 10 is a die range of movement schematic diagram.

Each is schemed used prosign and represents same content, wherein

Q _n＝Q

C ^' _p: the clock signal of sending by enabling counting through operation counting.

Numeral 3,6 among Fig. 3 on the holding wire, n are the signal way.

Fig. 5 is winding L of stepper motor _AControl element, the control element of other winding is identical with it, just input signal and winding become B, C and L accordingly _B, L _C, L here _A, L _B, L _CBe three windings.

α max represents the full swing angle of die operate as normal among Figure 10, and α min represents minimum wobble angle, α ₀Angle when not working for die.

Q _M=1 explanation finishes ［ α ₀, α min ］ section startup, enter ［ α min, α max ］ section operation.

CP=1 explanation motor moves again.

A=1, B=1, C=1 illustrate the motor winding L respectively _A, L _B, L _CEnergising.

α=1 explanation trace swing.

The range of movement of die such as Figure 10.Shown in the die range of movement schematic diagram.Hunting range when wherein ［ α min, α max ］ is normal the operation, α ₀Outside ［ α min, α max ］, sagging naturally position or original position when not working.α ₀The place establishes the mechanical position limitation original position adjustable plate of holding concurrently.

Counter first stroke when starting is pressed (α max-α ₀)/0.75 ° counting (wherein 0.75 ° is the stepper motor parameter of selecting for use, and different motors can be used different parameters, down together) is thereafter by (α max-α min)/0.75 ° of counting.By the variation of decoder output, make stepper motor drive die swing in ［ α min, α max ］ scope.The operation counter is n+1 system (n=［ α max-α min ］/0.75 ° down with).

The spacing distance of each pulse of impulse generator is T _W, nT _WBe half normal hunting period of die, regulate R and can regulate T _W, that is regulate hunting frequency.The design of circuit has guaranteed in the required scope of combing machine for fur regulating frequency arbitrarily.

Require to reduce simultaneously power consumption for satisfying moment, executive component can adopt the height power supply mode.Fig. 8. the circuit high-low pressure supply voltage shown in the executive component schematic diagram is 80V/12V.

Its switch element adopts V _MOSPipe, thus guaranteed that multimachine only needs several V of multi-parallel when using _MOSPipe gets final product.

R among Fig. 8 ₁, R ₂Available corresponding bulb replaces the double as indicator lamp.

Claims

1, a kind of combing machine for fur die device comprises die, it is characterized by this device and also comprises electronic-controlled installation and stepper motor, and wherein electronic-controlled installation is used for the control step motor and back and forth rotates, and it is made of major loop, signal system and executive component; Wherein stepper motor is used for directly driving the die swing; Signal system is made up of impulse generator, enabling counting device and operation counter, distributor, decoder, phase inverter, is used to produce the amplitude of control die motion and the pulse signal electric current of frequency.

2, as claim 1 as state device, it is characterized by the stepper motor that stepper motor is the high operating frequency of serration torque type.

3, install according to claim 1, it is characterized by the operation counter and adopt the n+1 system.

4, install according to claim 1, it is characterized by in its executive component and contain switch element, switch element adopts V _MOSPipe.

5, as device as described in the claim 4, it is characterized by its switch element is that a plurality of single cover switch elements are connected in parallel, die motion of each single cover switch element control.

6, install according to claim 1, it is characterized by and contain the continuous variable resistance R in the impulse generator, this resistance is used to control the die hunting frequency, regulates its resistance value continuously, and the die hunting frequency promptly correspondingly changes continuously.