SU850341A1 - Semiautomatic machine for packing glands of filtting - Google Patents

Description

one

The invention relates to devices for facilitating the installation and can be applied in the valve industry.

A semiautomatic device is known for stuffing glands of reinforcement containing a drive, a mechanism for forming and pressing in the tip and a cord feed mechanism.

However, this device for stuffing seals ship fittings has limited application.

According to the requirements of GOST 192674 (section 1.2.2, the stuffing box with a side of 5 mm square and more is placed in the stuffing box as individual rings, the joints of which should be at an angle of at least 90 ° from one another, and the gasket with the side of a square or 3 mm and 4 mm diameters are allowed to be made with a single cord. The joints of the rings should be exactly cut at an angle of 45 and should fit together.

However, the known device does not provide Forming individual rings with a cut at an angle of 45 and the displacement of the joints of adjacent rings at an angle of 90 °.

The purpose of the invention is to improve the performance and expand the scope of application of mechanized packing gland seals.

This goal is achieved in that to install the packing box assembly with the spindle, the forming and pressing mechanism is equipped with a cup and a ratchet wheel, and the cup

10 is pivotably mounted around an axis, and the mechanism for forming and pressing in the rings is coupled nematically to the cord feeding mechanism.

FIG. 1 depicts the proposed

15 semi-automatic, general view; in fig. 2 is a spatial diagram of the mechanism for feeding the cord and driving the rotation of the gland box and the spindle; in Fig. 3, section A-A in Fig. one; in FIG. 4 — times 20 cuts BB in FIG. H; in fig. 5 - mechanism for forming rings.

The semiautomatic device (Fig. 1) contains a frame 1, an unwinding device 2, hydraulic equipment with a command tank Volume 3, a feeding device 4, a mechanism 5 for storing and pressing the rings, and a control panel 6 for control. The unwinder 2 has an individual electromechanical drive and is designed to unwind the cord coil.

and forming a compensation loop in front of the feeding device 4.

The feeding device (Fig. 2) contains a hydraulic cylinder 7, leading rollers 8, gland rollers 9, rail 10, gears 11-14, pawls 15 and -16 and jq apovy wheel 17.

) The mechanism for forming and pressing in the rings comprises a rail 18, gear 19, spring 20, kinematically connected with a feeding device (Fig. 2), as well as a housing 21, a sleeve 22, a cup 23, dogs 24 and 25, springs 26 and 27, a punch 28 and the knife 29, the pusher 30, the receiving tray 31, the pushers 32, the cylinder 33 of the clamping of the spindle and the stuffing box, the cylinders 34 of the molding, the cylinder 35 of pressing the rings, the roller 36 of the pusher, the slider 37 and the microswitch 38.

L

All working movements in the semi-automatic are carried out by means of hydraulic cylinders, which are driven by a hydraulic station and controlled by a mechano-hydraulic control unit.

The semiautomatic works as follows.

The assembled spindle 39 and packing box 40 are inserted into the cup 23, and then pressed against it by the cylinder 33.

The cord 41 from the coil using the unwinding device 2 enters the gap between the drive rollers B and the gland rollers 9 of the feeding device 4. The feeding mechanism is driven by the hydraulic cylinder 7. Raika 10, moved by the cylinder 7 to the right, rotates gear 11, which transmits rotation to gear 12 ratchet mechanism. Through the pawl 15 mounted on the gear 12, rotation is transmitted to the ratchet wheel 17 and then through the gears 14 and 13 to the drive rollers 8. A cord of a certain length equal to the length of the ring sweep is fed through the receiving tray 31 to the molding zone. During the return stroke of the cylinder 7, the rail 10 returns to its original position, the ratchet wheel 17 is fixed by the pawl 16 and does not rotate. Simultaneously with the departure of the cylinder 7 to the initial position, the cylinders 34 are turned on, which move the pushers 32, the plunger 28 and the knife 29 to the center. The knife 29 produces a cord cut at an angle of 45 ° and a preliminary hemming of its ends, and a punch 28 finally a ring. The punch and the knife at the end of the stroke are crimped around the spindle. After that, the cylinder Cb is turned on and the upward pusher 30 moves upwards, which pushes the formed ring into the gland box, the cylinders 34 are turned off, and the pushers 32 return to their original position using springs 27. The cylinder 7 is switched on again. Simultaneously with the drive of the drive rollers 8, the rail 10 pushes the rail 18 of the ring forming mechanism, which

- by means of gear 19 and doggie 25

rotates by 90 hrap wheel 23, i.e. there is a rotation of the packing box with the spindle after pressing ka; 1shogo ring. When returning the cylinder 7 to the original

5, the position of the lath 18 is returned by the spring 20, the dog 24 keeping the cup 23 from rotating. Thereafter, the cycle repeats, i.e. the cord is fed, cut, molded, and pressed into place.

When pressing each ring roller 36 acts through the slider 37 on the microswitch 38, which gives a signal to the relay pulse counting.

5 After pressing the required number of rings, the cycle is automatically interrupted, the pressing cylinder 33 is retracted and the spindle with the gland box is removed from the cup 23. Using the automatic machine offered by the ass, it is possible to mold the gland rings directly on the product spindle and press the formed rings one by one into the gland box of the product,

5 each subsequent ring, due to the rotation of the socket, is turned relative to the previous one by the required angle.

Claims (1)

1. USSR author's certificate No. 359476, cl. R 16L 33/18, 1970. “, eleven P to. 21 3S star Fig.Z