SU1733123A1 - Method and apparatus for grading workpieces to size - Google Patents

Abstract

The invention relates to the sorting of products according to size, can be used to sort objects having various shapes, such as a block, and allows to increase productivity and expand technological capabilities. The method of sorting products involves orienting products, passing them through at least two expanding calibrated slots, placed one below the other and not parallel, while the elements forming the slots move with the same speed. An apparatus for carrying out the method comprises a frame 1 on which a driving drum 2 is placed, a sorting means made in the form of several flexible tapes 17, and a second sorting means located above the first sorting means, for which each receiving orienting bar 15 is provided with figured levers counterweights 16 mounted with the ability to interact with the cam 18. Both conveyors are kinematically interconnected by means of a gear unit and intended for leveling linear speeds her items sorting tools. The device also contains a loading device 19, discharge chutes 20,21.2 s. and 1 z. p. f-ly, Zil. “Yo

Description

ZonaSh

17 Zone Zone

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The invention relates to the separation of products by size and can be used to sort objects having different geometric shapes, such as a block.

Closest to the invention is a method of sorting balls by size, including transporting the balls with endless flexible belts, sieving the balls sequentially through several conveyors.

The device for carrying out the method comprises Y-shaped receivers located on an endless chain with the possibility of moving over the horizontal bars in the direction of the expanding sorting slots formed by these bars, receiving-sorting trays made in the form of a belt inclined conveyor mounted under the horizontal bars with the possibility of moving in the direction perpendicular to the direction of the expanding slots.

The disadvantages of the known device is the low productivity and insufficient quality of sorting due to the immovability of the horizontal slats. Such a constructive solution does not allow sorting at high speed and reduces its quality.

The purpose of the invention is to increase productivity and expand the technological capabilities of the sorting process.

This goal is achieved in that according to the method of sorting products by size, including orientation of products, transporting along an expanding calibrated slit and passing them through the slit, passing the products is made through at least two expanding at calibrated slits located one under the other. and located non-parallel, while the elements forming the slit, move with with the same speed.

A device for sorting products by size, containing a loading mechanism, a conveyor conveyor adjacent to it with receiving and orienting strips mounted on it, a sorting means installed under the conveyor and discharge trays, the sorting means arranged under the conveyor the strips forming the expanding sorting slots, moreover, the device is provided with a second sorting means placed above the first sorting means, for which each

the receiving and orienting plate is provided with a figure lever fixed to it with a counterweight and mounted for free rotation on an axis perpendicular to the direction of movement of the products, while the shaped lever of each receiving orienting plate is mounted for interacting with the introduction into the device by a fixed copier used for changes in the distance between adjacent planks in the process of transporting products. In this case, both conveyors are kinematically connected to each other via a gear unit for leveling the speeds.

Fig. 1 shows a device for sorting products by size, a general view; in fig. 2 - the same, top view; in fig. 3 - figured levers with counterweights.

The device comprises a frame 1 on which a drive (not shown) is placed, a drive drum 2 containing drive gears 3-, 4, placed respectively on shafts 5, b arranged coaxially and interconnected by means of intermediate gears 7, 8 rigidly fixed on the shaft 9, the driven gears 10, 11, rigidly fixed respectively on the shafts 12, 13, which are placed coaxially relative to each other, the chain 14 of the drive. The device also contains receiving and orienting strips 15 with figured levers and counterweights 16 and longitudinal endless flexible tapes 17, copiers 18 located on both sides of the device, a loading device 19, diverting trays 20 and 21.

An example implementation of the method. By means of the driving drum 2, the device sorting device is set in motion: receiving-orienting strips 15 and flexible belts 17. Using a speed equalization mechanism consisting of a block of gears 3, 4, 7 and 8, linear speeds are equalized. Since the receiving orienting strips 15 are connected to the cam 18, as they move, there is an increase in size in the perpendicular direction with an increase in the gap between the flexible ribbons 17. Thus, an increase in the size of the sorting slots occurs in two directions. Under the action of gravity, the sorted products (blocks) sequentially pass all levels of the sorting device of the sorting device. At the same time, in the zone I of the conveyor, items are sorted, the dimensions of which correspond to the gap and between the sorting, slots, in zone II - the size of which corresponds to the gap b. in zone III gap c. Objects that, after passing through zones I, II and ill, remained on the conveyor bars, arrive at the trays 20.

The device works as follows.

The torque from the drive gear 3 is transmitted through the drive circuit 14 to the driven gear 10, as well as the driven gear 7. The gears 7, 8 are rigidly fixed to the shaft 9, therefore the torque from the driven gear 7 is transmitted through the gear 8 to the gear 4 mounted on the shaft 5. The endless flexible ribbons 17 are driven by gears 4 and 11. The products (blocks) with the help of the loading device 19 are fed to the receiving and orienting strips 15 and held onto them. The initial gap between the strips 15 and the flexible ribbons 17 forms a sorting gap with dimensions ah and corresponds to a certain size (grade) - zone I. Such a gap is minimal and therefore at the first sorting stage all items are kept on the sorting means. Placing all the slats of the conveyor horizontally prevents the product being sorted and spontaneously moving along the elements of the sorting means.

The receiving-orienting strips are movable with the possibility of adjusting the gap between them, so the gap of the sorting gap in zone I can be adjusted within fairly wide limits depending on the type of the sorting products.

The receiver-orienting slats 15 are provided with figured levers with counterweights 16 and are associated with copiers 18. As the products are transported, the sizes of the sorting gap increase. In section II, the size of the sorting gap is b x b, which corresponds to the second size (grade), section III to the third. The processed products enter the discharge trays 20, 21, located respectively under sections I, II, III. Items that are larger than the maximum size of the sorting slot in x in and not re-sorted in any of the three sites are non-varietal and are delivered to the discharge chute 20.

The gear unit 3, 4 and 7, 8 constitute the speed equalization mechanism of the elements of the sorting means. The gear ratio is chosen from the condition

23 Z8

2.7 24

where 2Z - the number of gear teeth 3;

(one)

five

10 15 20 25 30 35

40 45 50 55

Z is the number of gear teeth 7;

ze is the number of gear teeth 8;

24 is the number of gear teeth 4.

When condition (1) is fulfilled, the all-gates of the sorting means move at the same linear velocity.

The use of the invention allows to increase the productivity and expand the technological capabilities of the sorting process.

Claims (3)

1. A method of sorting products by size, consisting in orientation of products, transportation along an expanding calibrated slit and passing them through a slit, characterized in that, in order to increase productivity and expand technological capabilities, the passage of products is made through at least two expanding calibrated slots placed one under the other and formed by moving elements, while the elements forming the upper and lower slots are angled to each other and moved with one Nakova speed. 2. A device for sorting products by size, comprising a loading mechanism, an adjacent transport conveyor with receiving orienting bars mounted thereon, a sorting means installed under the conveyor and discharge trays characterized in that. that, with the aim of increasing productivity and expanding technological capabilities, the sorting means is made in the form of several drive flexible bands arranged under the conveyor, forming expanding sorting slots, in addition, the device is equipped with a second sorting means placed above the first sorting means, for each receiving and orienting plate is provided with a figured lever fixed to it with a counterweight and mounted with the possibility of free rotation on an axis perpendicular to the direction of movement of the products, while the figured lever of each receiving-orienting bar is installed with the possibility of interaction with the stationary copier introduced into the device, which serves to change the distance between adjacent bars during the transport of the products. 3. The device according to claim 2, characterized in that both conveyors are kinematically connected to each other by means of a gear unit for leveling the speeds. SN 55 Wi cJ