SU125330A1 - Ploskov zalna dvukhfonturna jacquard machine - Google Patents

Description

Known flat two-bridge jacquard machines are known, equipped with a movable locking carriage with reversing drive and electric locks for switching them, a number of rows in the undercarriage, switching off the machine drive, and a jacquard control mechanism with perforated cards mounted in an endless chain.

In these machines, the jacquard drain mechanism enables control of the electric drives of the machine mechanisms by means of contacts that are locked by mechanical gears driven by punch cards.

Due to the possible burning of the contacts, the reliability of their closure is insufficient; In addition, the mechanical transfer from punch cards to contacts, because of its inertia, slows down the machine.

In the described nloskov knitting machine dvuhfonturnoy zhakkardovoy- noted disadvantages are eliminated in that the jacquard mechanism is provided with an electromagnetic actuator for the ratchet Shuffle, eii card includes contacts closes carriage and illuminates through holes punched in E photoresistor, osushestvl yushimi through relay switch electromagnetic actuators, for example, wedges lock carriage.

In order to turn on and turn off light bulbs, updated on their photo-protectors in the jacquard mechanism, two pulse counters are used, which are activated by contacts closed by the lock carriage in its extreme fields.

To reduce the impact of a shock load on the lock carriage when it is reversed, an intermediate carriage is applied by moving # 125330

ma driven And coupled to the lock carriage by means of a spring-loaded stop.

On fig. 1. Shows the kinematic diagram of the drive of the locking, carriage of the machine; in fig. 2 is a diagram of a jacquard control mechanism and counters; in fig. 3-diagram of the electromagnetic ratchet drive of an infinite chain of punched cards.

Plosk zal dvukhfonturna jacquard mashipa equipped with two needle beds with tongue moving needles and with high and low heel (needle cases and needles in the diagram are not shown), a movable locking carriage 1 (Fig. 1 and 2) with reversing drive and locks, moved away from the needle beds by electromagnets 2 (Fig. 2), a needle-raising mechanism with an electromagnetic drive, yarn feeders moving along the carriage movement, selectively set by the carriage stops, extended by electromagnets, a rear needle shift mechanism gical solenoid operated Jacquard and control mechanism (in Scheme mechanism gain needles, yarn feeders and shear mechanism of the back bed are not shown).

The reversing drive of the key carriage / (Fig. 1) is made in the form of an intermediate carriage 4 coupled to it by a spring-loaded support 3, coupled, for example, with the upper branch of one endless chain 5 and the lower branch 6 of the other, alternately moving in one direction with a double electromagnetic clutch 7 of the clutch rotated by the electric motor 8 by means of a belt drive and switched by means of a lever switch 9 including a purpose-purpose clutch 5 or a chain 6.

The lever switch communicates with a plug 10 of a slide-mounted rod 11, carrying two stops 12 and 13.

The stops interact with the pushers 14 and 15 of the intermediate carriage 3 and can be rearranged along the rod to change the carriage stroke by means of screw rollers 16 mounted on this rod with handwheels 17 for their rotation.

The jacquard mechanism of the machine consists, for example, of five similar devices 18 (Fig. 2) designed to control the change of thread guides, shift the back needle bed, increase the needles, switch the middle wedges of the carriage locks to change the density in the underside and move it off when the wedges are turned off from work.

Each control device is made in the form of two electromagnetic counters 19 and 20 pulses, one of which, for example counter 19, after reaching a predetermined number of rows in the low, turns on through the contacts 21 lighting lamps 22 illuminating the photoresistances 23 through the holes of punched cards 24, and the other of these, for example, counter 20, after reaching a predetermined number of rows in the low, turn off, through the contacts 25, the power supply of these bulbs.

Reflectors 26 are mounted behind the lamps to enhance the luminous flux and front-condenser lenses 27 are mounted.

The machine is equipped with contacts 28, which are closed through pin 29 by anvil 30 of the lock carriage in its extreme positions, including electromagnetic counters 19 and 20 pulses, and an electromagnet 31 (Fig. 3), whose measles 32 by means of kinematically connected pulls 33, lever 34 and Another cable 35 drives the drive lever 36, carrying the dog 37, rotating the ratchet wheel 38, fastened with an prism that moves an endless chain assembled from punched cards 24 (a prism and an endless chain are not shown in the diagram).

Photo-resistors 23 are included in the relay circuit 39 (Fig. 2) with diodes 40.

The relay 39, by means of its normally open contacts 41, includes driving electromagnets 2, for example, for controlling wedges of the lock carriage or other machinery mechanisms.

The control devices are put into operation by means of contacts 42 on the control panel (the panel is not shown in the diagram).

The action of maschina is as follows. The drive of the locking carriage 1 reverses its movement, and the stroke of the carriage is limited by stops 12 and 13, set manually by means of handwheels 17 or automatically through a ratchet electromagnetic drive controlled by a jacquard mechanism.

When moving, the carriage closes in the extreme position the contacts 28, which include electromagnetic drives of counters 19 and 20 pulses and an electromagnetic ratchet drive of a prism that moves an endless chain assembled from perforated cards 24 of the jacquard mechanism.

Through the apertures of these cards, the lamps 22, which are turned on and off by the counters 19 and 20, illuminate the photoresistances 23, which turn on the relay 39 through the diodes 40.

The relay, by its contacts 41, turns on the power supply circuit of the electromagnetic drives of the corresponding mechanisms.

Thanks to the use of photoresistances in the jacquard mechanism, the reliability of its work increases. The presence in the interface of an intermediate carriage moved by a reversing drive and coupled to the lock jig by means of a spring-loaded stop reduces the impact on the lock carriage of a shock load when it is reversed.

Subject invention

Claims (3)

1. Pads are a double-sided jacquard mask equipped with a movable reversing drive lock and motorized locks for switching them, a number of rows in the dial, switching off the masking drive, and a jacquard control mechanism with perforated cards mounted in an endless chain, featuring themes that, for the sake of reliability in operation, the jacquard mechanism is equipped with an electromagnetic ratchet drive for moving cards, which are activated by contacts, closed by a carriage, and illuminated black Without opening the punch cards of the photoresistance of many people, blinded, using a relay, they activate electromagnetic drives, for example, wedges of the lock carriage. 2. The form of execution of the machine according to claim 1, characterized in that, in order to turn on and off the bulbs illuminating the photoresistances in the jacquard mechanism, two pulse counters are used that are activated by the contacts closed by the locking carriage in its extreme positions. 3. The form of execution maschiny on PP. 1 and 2, characterized in that, in order to reduce the impact of the shock load on the lock carriage when it is reversed, an intermediate carriage is applied that is moved by the drive and coupled to the lock carriage by means of a spring-loaded stop. № 125330 I -. ..-- en //////////////////// // Fig.Z