SU392353A1 - DEVICE FOR SORTING LONG-DIMENSIONAL ITEMS BY WEIGHT - Google Patents

Description

one

This invention relates to a weight measurement technique.

Devices for sorting objects by weight are known, comprising a weighing device built into the cargo track of a valuable pushing conveyor with carriages for hanging objects, a dumping mechanism and a control unit.

These devices do not provide the required accuracy when sorting long items.

The proposed device, for the purpose of increasing accuracy, is provided with a spring-loaded pusher of carriages, whose axis is attached to the links of the conveyor, and an abutment attached to the frame of the device, diverting the pusher for the weighing period.

FIG. 1 schematically shows a general view of the described device (front view); la fig. 2 is a side view, with a slit; in fig. 3 is a front view of one section.

The product requiring weighing is put on the hooks of the trolley 1 and fed to the weighing platforms of the scales by a chain pusher conveyor consisting of a conveyor chain 2 with carriages 3 attached to it, pushers 4 and stops 5, drive sprocket 6, tension sprocket 7, upper running track 8 and lower load track 9,

connected by pendants 10 and n engraved on frame 11.

The movement of the conveyor is carried out from the electric motor 12 through the gearbox 13, the belt drive 14 and the bevel pair 15.

Above the running track 8, a scale 16 is installed. In these places, the cargo route 9 of the pushing conveyor has cutouts in which the corners 17 are inserted with a gap. The latter are connected to the cargo cup 16 by means of t 18 and thus form a loading platform (cargo route), which can be moved vertically.

In order to reduce the weighing error by moving the pusher 4 away from the tel / for the weighing period, the device is provided with an abutment 19, which rests on a pin 20 mounted on the pusher 4. The pusher 4 can rotate around the axis 21 (Fig. 3), which is mounted on a link chain 2. To return the pusher 4 to its original position, there is a spring 22, which at one end is attached to the pusher 4, and the other end to the suspension of the carriages 3.

Dropping the blanks from the hooks of the trucks / is carried out by the mechanism 23 dropping. The latter is made (Fig. 2) in the form of a pusher 25 moving in guides 24, connected by means of levers 26 with a spring 27 and an electromagnet crust 28, activated by two non-contact position sensors, the first of which, sensor 29, is installed under load path 9 copier.

The device contains Jescolko identical sections in accordance with weight groups. Each section includes a scale 16, a dropping mechanism 23, four sensors 29, 30, 31, 32. Two sensors 30 and 31 signal the weighing results, the sensor 30 being set on the scale 16, and the sensor 31 below the scale 16 above freight by weight platform. The third sensor 29 sends a signal to the electromagnet 28, and the fourth sensor 32 returns the circuit to its original position.

Weighing is carried out from the maximum weight group of blanks to the minimum along the motion of the chain 2 of the conveyor.

In order to register the weighing results on the scale of scales 16, a non-contact sensor 30 is installed, the slot of which includes a flag 33 attached to the scale arrow. In order to reduce the amplitude of oscillations of the needle and thus the time for calming down the mechanism of the scale, the course of the lever system of the scale is limited.

Before weighing a given type of blanks on the weight plate, the weights of each weights are put weights according to the weight groups.

The device works as follows.

At the approach of the next carts / to the workplace, the hooks of the cargo carts and weigh the blanks, to be weighed. Trolleys with workpieces entry and running track of the weighing platform. Meeting in its path stop 19, the pusher 4 departs from the trolley /, but the trolley moves due to inertia and the slope of the load path of the weighing platform. At the approach of the flag of the cart / to the slot of the sensor 31, the arrow of the scales 16 has time to take a stable position. As soon as the cart flag / crosses the slit of the sensor 31, the pin 20 of the pusher 4 smoothly leaves the support 19 and moves the body / further.

IF trolley weight with hinged item. corresponds to the weight group, then the sensors 30 and 31 simultaneously receive signals on the relay of the electromagnet 28 of the dropping mechanism 23, as soon as the cart flag / crosses the third sensor 29. The electromagnet 28 is triggered, and the pusher 25 drops the hooks of the tele 1 and the workpiece into the receiving device (not shown).

If the weight of the workpieces does not correspond to the weight group, then signals from sensors 30 and 31 are not received and the workpiece moves to the next section.

When the flaking tele / slit of sensor 32 is crossed, a signal and an electrical current are applied. the circuit returns to its original position.

Billets that do not fall into any of the weight groups collide with the hooks of the carriages 1 by the fixed outlet 34 (Fig. 1), set at an angle to the direction of the blanks.

Subject invention

A device for sorting long items by weight, containing scales embedded in the cargo path of a chain pusher conveyor with carriages for hanging objects, a dumping mechanism and a control unit, characterized in that, in order to increase accuracy, it is provided with a spring pusher shaft. Schr ik ai lu a to her 31Vvn 1m "oiweier, and driirell to ra. me1c 11roy1st | va yinoipOM, retracting the pusher to

period of 1BR.

J

thirty