CS236966B1 - Engagement of industrial sewing machine drive - Google Patents

Abstract

The connection solves the problem of saving electrical energy in sewing machines. Savings are achieved by the fact that the electric motor (5) of the sewing machine is switched by means of a three-phase power switch (4), controlled by a microswitch (5) only for the duration of the actual sewing of the material. The switching and opening of the electric circuit of the electric motor (5) occurs very shortly before the switching and opening of the mechanical clutch (?) of the machine. Due to the large inertia of the rotation of the rotor of the electric motor (5) and the flywheel of the clutch (?), the inrush currents when the sewing machine is switched on again are negligible. The clutch (7) of the electric motor (5) is controlled by a pedal (6) to which the control paw (9) of the microswitch (5) is also connected.

Description

Erasing the operation of industrial Sewing machines with low power consumption wiped off interperational switching off * The pain is directed at the sewing machine drive, the electric motor needle is equipped with a clutch controlled by the sewing machine casing ·

Review detects sapojsnl Sewing machines pulled out, So the electronic machine jo sapojon to power to drink after a long working time * Disconnecting the sewing mechanism is often using dry clutches * The sewing machine jo train actively used only a small meeting of working hours and only during self seivánl * running others times * ie * handling and handling part of the fabric, preparation, straightening * assembly to the machine atp * bleached machine engine empty · Own pouring forms up to 30% of the time and the remaining 70% yo electric energy worn for the ehod engine empty * As known » the electric motor has emptied the largest consumption of reactive energy and the

These drawbacks are overcome by the operation of industrial presses by means of an ay-operative switch-off, the needles being essentially supplemented by the connection of the electric motor of the casting machine via a power switch, to which a microswitch is connected. The microswitch control lever *, whose movement climbs and closes the microswitch contacts, is mechanically coupled to the pedal * which controls the clutch release and engagement of the electric motor of the casting machine *

236 966

- 2 The power supply, which is powered by the oloctronotor, is controlled by the micro switch and so that the clutch pedal * clutch pedal »is connected before it is switched on, the electric motor is connected to the power supply». only to disconnect the electret from the voltage supply, which aa still keeps under the influence of aa * durable ail motor and flywheel clutch · To build it up in some machine types after fifteen minutes · Dress ary «engine speed painting does not have a significant effect on reclosing ·

Unoperatively switching off the electric note and making the surge currents less efficient will achieve aai 90 S electrical energy compared to the original wiring, Sine Sol on one machine and motor, and a 0.6 kV output of 1,260 kffh native to dual operation. The ball does not heat up the engine much much, it does not bend the fan of the motor, but whoever connected the motor to the power supply intermittently. Improves the lead approx. And therefore decreases reactive losses · There will be melting savings on compensation · Yeah it is possible to fly and nailí conductor cross sections and thus save precious metals. Xloktrieký notom jo circuit only for own embedding of material ·

The rejected casting according to the invention was shown in the drawings and in the description of those drawings, who is familiar with FIG. 1 an overall diagram of casting machines, which is supplemented with a circuit of non-operative shutting off machine notes; · 3 fixing and adjustment of the microswitch * fig. 4 graph of the electric current surge from the yoke switch to the time of operating speed

According to FIG. 1, the electric motor 2 of a machine (not shown) connected to a three-phase supply voltage has switched off 1 and via a power switch 6. The foot switch 1 and the power switch 8 are connected to the power supply leads of the immersed circuits of the machine.

- 3 238 988

The electric generator 6 is provided with a clutch χ which is connected to the lever 8 (FIG. 2) and the rods ΐχ connected to the pedal, by means of which the clutch X controls the microswitch χ and rotates the contacts disengaged by the power switch,. 3) the micro switches ja are connected to the hammers and the waist pedal χ via the connecting chain 12 and the rod 13 * Movement ovládací of the control levers 2 ·· open and connect the contacts of the microswitch χ, which joins the base 11. the initial half-position χ, in which the internal contacts of the microswitch χ are open · the simpler is the mechanical connection of the control lever 2 of the nicoswitch χ and the clutch J of the clutch J. before o and the jumper χ gets into the machine and switched off the machine 2 when the clutch 5 is no longer engaged. The switching position 10 of the actuating lever 2 of the nicotransmitter χ corresponds to the partial depression of the clutch pedal 8 of the clutch X X. The control panel IX of the actuating lever 2 corresponds to the position IX * of the clutch lever 8, in which, however, the χ není is not yet engaged. The full pedal 6 of the waistband χ corresponds to the closed position XXX of the control lever 2 of the microswitch X and the working position III * of the lever 8 of the waist χ. The Xloctric circuit of the microswitch is χ y off, also the clutch χ of the motor 6 engages. In this position, the sewing machine itself moves. The idle position I * of the lever 8 corresponds to the initial position I of the control lever 2 ·

Use an air contactor or a three-phase alternating current semiconductor switch as the power switch 6 of the electric motor.

When the switch 1 of the machine 3 is switched on, only the electrical auxiliary circuits 2 are energized. When the pedal 6 of the χ coupling is depressed, the electric motor χ is first connected by means of the nicotap switch χ. When the pedal 8 is released, the jumper χ is disconnected and the electric circuit of the electric motor 6 is disconnected. Ton o of inertia is still spinning and repeating the actions.

238 888

According to FIG. 4, the values of the electric current 1 (A) are plotted on the vertical axis and the time £ is plotted on the horizontal axis. The current of the current value and current is equal to the current value of the current, which corresponds to the operating value of the idle whitening percussion device. manna values of flux * · electric current · running of fast cycles of oloctronotor switching on and off and reaches practically operational value Xcrov · current consumption · C energy saving occurs even if the electric motor is stopped completely ·

The described connection can be used in all types of industrial casting machines · electric motor with clutch · They differ only in mania deviations in the design and according to mechanical positioning on different types of machines · The connection can be applied at low cost also on machines manufactured by ·

Claims (1)

PilD li I vimXlezu 23B 9BB _Λ Connection of the drive of an industrial mower machine, the electric motor of which is provided with a clutch enabling the machine to be switched off by means of a foot pedal, characterized in that the meter (5) is powered via a power switch (4) 3), whose control lever (9) is mechanically coupled to the clutch pedal (6) ·