SU134371A1 - Passing machine for straightening and squeezing leather - Google Patents

Description

Known m-shchiny for pressing and unfolding the skin, made in the form of two exchanged one above the other rotated in the opposite direction of the skin-pressing horizontal shafts.

The lower shaft of these machines for its raising and lowering is equipped with a piston-type hydraulic drive, switched on and off the ZALOTNIK01M and controlled drive cam.

Each shaft of the machine is covered with an endless felt belt, the ribbon of the lower shaft is located horizontally, a supporting shaft is installed below it, and above it is a leather roller half roller mounted on levers for lowering and lifting it.

The described machine, in contrast to the known, for the purpose of automating the raising and lowering of the lower and knife shafts when they are fed into the working area, is equipped with a piston hydraulic actuator driving the levers of the knife shaft by means of a sector-sector transmission.

At the front of the endless felt belt of the lower shaft of this machine, an illuminator and two photoresistances darkened by the treated skin are installed, separately included in the circuit of two time switches, which turn the hydraulic actuators on and off. To align the position of the lower squeeze shaft by switching the power of both piston hydraulic actuators, the mask spabzhena two spring-loaded reversing spools with electrically operated actuators activated by the photoresistance time relay through the working pressure relay in the hydraulic actuators. It also uses two controlled reversing spools, supplying the spool, which turn off and turn on the hydraulic actuators, and also switch their power to series or parallel. The surface of the squeeze rolls of this machine, in order to protect against corrosion, is coated with ebonite.

The proposed mask is shown in FIG. 1 and consists of a base /, preformed of itself two cast racks, fastened with ties.

№ 13437Г- 2 -In the racks bored holes for the cylinders of the hydraulic drive pressing ъпов.

On the rods of 2 cylinders in bearings 3 there is a lower one, a shaft 4 and an upper one 1-shaft 5.

The lower points of the upper squeeze shaft 5 are fastened directly on the uprights of the base. In special grooves of the uprights, the roller shafts 6 are installed under the tension of felt stockings. The stands of the loading conveyor 7, which consists of three conveyor belts 8 (each 800 mm wide), are fastened to the base stand. In the intervals between the tapes laid transparent sheets of organic glass. Under these sheets, two illuminating lamps — the illuminators — were strengthened. Above the glasses, photoresistors W are installed, transmitting commands to the hydraulic system for lifting to lowering the squeezing shafts and straightening its cutter shaft // depending on the passage of the skin between the light beams and the photo cells. The driving shaft of the loading conveyor is mounted on the axis 12, at the ends of which Sit t the levers 13 of the knife shaft and the toothed sector. The latter is coupled to the rack-rod of the hydraulic cylinder 14 for raising and lowering the knife shaft. In the bearings of the levers 13 mounted knife, the shaft U /. The squeezing shafts receive rotation from the electric motor through the gearbox / 5 and 16 gear mounted on the base.

The driving shaft 17 of the boot tranporter: and receives rotation from the electric motor through the worm gearbox 18 and the chain transmission. The blade shaft 11 receives rotation from the electric motor through a belt drive. .

Under the squeezing shafts, a discharge conveyor 19 is mounted. In front of the squeezing shafts, there is a support roller 20 on which the skin rests while it is straightened with a knife shaft.

The hydraulic circuit of the machine is shown in FIG. 2 and consists of a double vane pump 2 /, a plate filter 22, a safety valve with overflow supply valve 23, two reversible spools 24 to 25 with electro-hydraulic control, a pressure slide valve 26 with a check valve, three relays 27, 28 and 29, a pressure gauge 30 in common assignment and two hydraulic cylinders 31 and 32 of the pressure roller. Work on the machine is carried out as follows. The skin throws on the loading conveyor 7, transporting it To squeezing shafts. Photo cells transmit an impulse to two time relays at the moment when the illuminator crosses the beam’s front edge of the skin. The time relay commands the hydraulic actuator, which raises the lower squeezing shaft 4 and lowers the blade shaft //. The time relays are adjusted so that the knife shaft // is lowered after the skin is gripped by squeezing shafts 4 and 5. When the rear edge of the skin passes over the beam of the illuminator 9, the photo cells issue a time relay command and after a certain period of time the knife shaft 11 rises and the lower squeeze shaft rises four.

The felt stocking of the lower squeeze shaft 4 is horizontal and, thus, it is a conveyor that receives the skin from the feed conveyor.

Wrung, the leather goes to the discharge conveyor 19 (Fig. 1), from which it is then removed by the worker.

Subject invention

Claims (3)

1. Passing machine for skinning and pressing of leather, turning off two squeezing shafts, of which the bottom one is equipped with piston hydraulic actuators for raising and lowering it, turned on by a feed spool, covered with an endless felt belt, horizontally, under it A supporting shaft and an "it-is-movable in a vertical direction mounted on the drive levers is a straightening knife shaft, characterized in that, in order to automate the lifting and lowering of the lower shaft and knife when fed into the treatment area skin, it is equipped with a lorshne hydraulic actuator for holding the knife shaft by means of a slider-sector transmission, and in front of the infinite lower band of the lower shaft there is an illuminator and two photoresistances darkened by the skin to be processed, separately switched on and off the hydraulic relay gadfly. 2. The drive machine is in accordance with claim 1, so that in order to align the position of the lower squeeze shaft by switching | Pitani of both piston hydraulic actuators of the shaft to the sequential one during its movement and to the parallel one height in extreme positions, it is equipped with two spring-loaded reversing slide valves with electric actuators, which turn on the photoresistance time relays via the contacts of the working medium pressure relay in hydraulic actuators, and it uses two reversible control valves that supply the spool, guides and hydraulic lines on and off switching of power to the serial or parallel. 3. Passage machine but nn. 1 and 2, characterized in that, in order to protect the squeeze rolls from corrosion, their surface is covered with ebonite. - 3 - № 134371