SU972244A1 - Device for portion weighing of ferromagnetic materials - Google Patents

Description

(54) DEVICE FOR PORTABLE WEIGHING OF FERROMAGNETIC OBJECTS

one

The invention relates to weight measurement and can be used for batch weighing of ferromagnetic objects, such as fasteners.

A device for batch weighing fasteners in a stream, containing a feed bin, scales with sensors, a loading mechanism, a conveyor with a pusher and guides for tare 1 equipped with a rotary reflector, is known.

The disadvantage of the device is low dosing accuracy.

The closest in technical dryness to the present invention is a batch weighing device of fasteners, containing scales with sensors, weighing and feed bins, a loading conveyor with a hopper and a conveyor for containers.

A disadvantage of the known device is low productivity and reliability when dispensing rod-like fasteners, for example, nails.

The purpose of the invention is to increase the reliability and productivity of the dosing process.

This goal is achieved in that the accumulator is made in the form of a belt conveyor mounted above the feed conveyor so that an adjustable gap is formed between the tension pulley of the accumulator and the loading conveyor 5, the accumulator being made with the center of gravity displaced relative to the transverse axis of attachment and can be rotated around this axis, and its tension pulley is equipped with magnets on the front of the ferry; The drive drive pulley is kinematically connected with the drive pulley of the load carrying conveyor.

FIG. 1 shows the device, a general view; in fig. 2 is an isometric view of the mutual arrangement of the accumulator and the load carrying conveyor.

Claims (2)

The device consists of automatic scales 1c with sensors 2-5, triggered by arrow 6 of scale 1, weight hopper 7, feed bin 8, feed conveyor 9, chute 10, with gate 11, accumulator 12 and conveyor 13 for containers. The container 14 is installed under the weight bin 7. The tension pulley 15 of the accumulator 12 is equipped with magnets 16 along the periphery, and its drive pulley 17 is kinematically connected with the uiKHBOM 18 of the feed conveyor 9. The accumulator 12 is fixed on the rotary axis 19 so that its center of gravity is displaced relative to axis 19 towards the tension side 15. For raising accumulator 12 serves lever 20 fixed on axis 19, receiving movement from pusher 21 of pneumatic actuator 22. To set the gap between tension pulley 15 and loading conveyor 9, serves an emphasis 23. Device R It works as follows. In the initial position, the arrow 6 of the balance 1. is in the zero position at the sensor 2. The accumulator 12 is raised with the help of the lever 20, the pusher 21 and the pneumatic actuator 22 to the upper position. Tara 14 is installed by the conveyor 13 under the weight bunker.m 7, and the gate II is closed. On command at the start of metering, the feed conveyor 9, accumulator 12 are turned on, and gate II opens. At the same time, a "rough supply of fasteners from the feed bin 8 to the weight bin 7 begins, and arrow 6 moves to the sensor 3. When the arrow 6 passes the sensor 3, a command is issued to slow down the conveyor belt 9. With the weight of parts in the bunker 7 equal to 96-97 ° / o of a given portion of the arrow 6 is aligned with the sensor 4, giving the command for accurate dosing. The pusher 21 of the pneumatic drive 22 goes to the right, and the accumulator 12 under the action of its weight lowers until the lever 19 meets the stop 23. At the same time, between the tension pulley 15 and the conveyor 9 there is a gap equal to 5-8 diameters of the dosed parts. Due to the presence of a magnetic field created by the magnets 16, about 2/3 of the layer of parts supplied by the conveyor 9, they begin to be transferred to the accumulator 12. Leaving 1/3 of the layer of parts left on the conveyor 9 will ensure accurate dosing with a given intensity. When the preset value of the portion is reached, arrow 6 is combined with sensor 5. The latter issues a command to stop the conveyor 9 and accumulator 12, as well as lowering the gate 11 to the bottom of the chute 10, i.e. for stopping the feeding of parts into the bunker 7. The bottom of the bunker 7 is opened, the weighed portion enters the container 14, which is conveyed by the conveyor 13 from the area under the weighing bin 7. The weight arrow 1 returns to its original position and is aligned with the sensor 2, which gives the command to resume cycle. The use of a device for portioning the ferromagnetic objects will increase by 15–18% the productivity of metering fasteners and increase the operational reliability of the weighing equipment. Claim 1. Device for batch weighing of ferromagnetic objects, containing scales with sensors, weighing and feed bins, loading conveyor with accumulator and container conveyor, characterized in that, in order to improve the reliability and productivity of the dosing process, the accumulator is designed as a belt conveyor mounted above the loading conveyor so that between the tension pulley of the storage ring and the loading conveyor there is an adjustable gap, the drive being made with an offset This means that the center of gravity is relative to the transverse axis of the mount and can be rotated around this axis, and its tension pulley is provided along the periphery with magnets. 2. A device according to claim 1, characterized in that the drive pulley of the accumulator is kinematically connected with the drive pulley of the load carrying conveyor. Sources of information taken into account during the examination 1. USSR author's certificate No. 518638, cl. G 01 G 13/18, 1976. 2. USSR author's certificate No. 594413, cl. G 01 G 13/08, 1978 (prototype).