JPS6135889A - Device for classifying small-piece-shaped substance in response to length - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for sorting elongated pieces of sorting material according to their length.

A sorter for sorting particulate material is described in European Patent No. 22275. At that time, the sorting machine
It functions to classify small piece-like substances, especially sugar-coated tablets, tablets, etc., that is, sorting substances with round outer peripheries, according to at least one of thickness and external shape. This sorting material is introduced into the sorting slit of the sorting wheel. The sorting slit becomes finer from its outer periphery toward the center of the rotating body. In this sorting slit, the material to be sorted is sorted into two by gravity and the action in the slit.

This known structure allows a satisfactory and rapid classification to be carried out. This known device has a high sorting accuracy.

It is not possible to sort out elongated sugar-coated tablets, tablets, etc. with the above-mentioned known devices. This is because this known sorter does not take into account the length of the material to be sorted.

The object of the present invention is to be able to completely measure the length of the sorted material, to eliminate the sorted material that deviates from the target length, and to achieve high efficiency despite the small dimensions of the product. An object of the present invention is to provide a device for sorting small pieces of elongated products.

This object of the invention is achieved by the features of patent claim 1. Preferred embodiments of this device are set out in the patent claims.

A device for sorting elongated pieces of material is known from US Pat. No. 3,455,444. In this known device, the product to be sorted, for example cucumbers, is placed on a conveyor belt, by means of which the material passes through a light measuring device. This optical measuring device controls the gas jet for ejecting the substance from the conveyor belt.

This device can only measure heavy, flaky substances;
A high sorting effect cannot be achieved in the case of small objects.

This is because the material is not held securely and securely on the rapidly moving conveyor belt.

In the present invention, elongated pieces of material to be sorted are removed from a container with a number of hopper-like outlets located below by means of a vibrating conveyor chute, and simultaneously placed and broken up to measure the thickness. supplied to the station. The material to be sorted is subsequently transferred, likewise in bulk, via a suitable transfer device to a second measuring device. When passing through this measuring device, the longitudinal axis of the sorting material is measured photoelectronically, and if the target length of the sorting material does not correspond to the actual length, it is ejected by the precompressed gas in the millisecond range. Ru. In this case, a discharge from a moving product line is achieved without storing the control-actual value signal, and at the same time a measurement dependent on the conveying speed is achieved.

1 serving■ The present invention will be explained in detail below based on the figures.

In the figure, reference numeral 8 denotes a storage container that accommodates the sorted material 1 in the form of small pieces, that is, in the form of blocks. The storage container is equipped with an outlet at its lower end. A vibrating conveying element is provided below this outlet. The elongated sorting material 1 broken up by the vibrating conveying element is then fed to a sorting machine 3 belonging to the prior art according to EP 22 275. In this sorter, the material to be sorted is sorted according to its contours.

Then, the sorted material 1 that meets the target value is supplied to the length measuring station 2. The length measuring station is provided by a sorting wheel E2 rotating in the direction of arrow F.

It works.

The length measuring station 2 is equipped with a sensing device, ie a scanning device 4 . This sensing device 4 is activated by a light beam generator 17 and a light beam 5. In this case, the light beam 5 is blocked by the sorting material 1. The sensing device 4 is actuated by a continuous light beam 5 and the receiver cell 6 generates measuring pulses depending on the transport speed when the light is blocked by the sorting material. This number of pulses is evaluated digitally to determine the deviation between the actual length and the target length. Sorted material that does not meet the target length is transferred to compressed gas source 1.
It is thrown off by the compressed gas jet 7 generated by 8. The specific device for generating the compressed gas jet 7 is shown in its entirety as a discharge device 14 .

The sorting wheel 12 is provided with a sorting slit 11. An annular snare 16 for guiding the light beam 5 and the compressed gas jet 7 is opened in the deepest part 12 of the sorting slit 11 . In the center of the sorting wheel 12, a light beam generator 17 and a compressed gas source 18 are provided. The compressed gas jet 7 throws off the sorted material that does not meet the target length and the receiver feeds into the container 20.

The sorting material 1 that matches the target length accumulates in the sorting slit 11 and falls out of the sorting slit 11 only after reaching the second quadrant during the rotation of the sorting wheel 2;
A suitable collection device 21 is fed.

[Brief explanation of drawings]

FIG. 1 is an overall view of an embodiment of the present invention, and FIG. 2 is a sectional view of a sorting wheel portion. 1... Sorting substance 3... Sorting machine 4... Sensing device 8... Storage container 11... Sorting slit 12... Sorting wheel 14...; Release device

Claims (3)

[Claims] (1) A storage container containing a sorting material is provided, at the outlet of which a vibrating conveying element is provided, which conveys the sorting material to the next measuring station by means of a sorting wheel and sorting. Small pieces of elongated shape, such as dragees, tablets, etc., in which the wheel is driven via a rotating shaft and is formed as a rotating body, and the screening wheel has a sorting slit that tapers from its outer periphery towards the center of the rotating body. In an apparatus for sorting shaped products according to length, a) the material classified according to either thickness or contour by the sorter (3) slightly enters the sorting slit (11); the sorting slit (11) has a width such that b) the sensing device (4) detects the beginning of the first quadrant of the sorting wheel (12) when viewed in the direction of rotation (F) of the sorting wheel (12); c) a discharge device (14) for sorting material (1) that does not comply with the target length is provided in the first quarter of the sorting wheel (12), viewed in the direction of rotation of the sorting wheel (12); immediately in front of the end of the circle, d) the removal of the sorted material (1) with its actual length takes place in the second quadrant, viewed in the direction of rotation (F) of the sorting wheel (12); A device characterized by: 2. Device according to claim 1, characterized in that the removal of the material to be sorted with the target length is effected by gravity through the sorting slit (11) of the sorting wheel (12). (3) The discharge device (14) is formed by a gas nozzle that opens into the deepest part (15) of the sorting slit (11) and is controlled by a sensing device (4). The device according to item 1.