DE2010771B2 - Arrangement for sorting individual items - Google Patents

Description

40 can be made narrow, resulting in high requirements in terms of precise design and precise assembly of the rotary current

The present invention relates to an assembly or belt assembly. Such high-precision arrangements for sorting individual pieces with a test chamber are ultimately also subject to severe wear and tear.
leading transport device as well as with drop-off From the USA.-Patent 3 259 240 is still

represent good and bad individual items, with a sorting arrangement that has become known Clock circuit for generating clock pieces with the aid of a transport device on a pulses moving past synchronously with the speed of the trans test device. The test facility port device as well as with one of the clock im- 50 identifies the individual pieces, which are then from the pulsed shift register with a transport device moved on to drop points periodic distance between the test chamber and and there are thrown off. The information, at the number of flips corresponding to the dropping point - which dropping point the individual item is dropped Flops, with a »SchlechU signal from the test chamber, is fed to a shift register first flip-flop toggles into a defined position and 55 chert, which is triggered by clock pulses from a clock generator Signal is advanced after passing through the shift register circuit. The clock switch Release device actuated. circle is created by fixed prongs on the

In a variety of arrangements for sorting port device actuated and with the transport in front of A memory is required for individual pieces because the direction is synchronized. If the single piece reaches the If the product tested at one point is not provided at the same time 60, then an is actuated by the ski this point can also be thrown off, since there is already a registered impulse output via an impulse forsich berm testing is located in a test chamber. The corresponding ejection device, The piece to be tested is produced after the test pre- With the help of the pulse shaping circuit, however, can gang is transported further, while the memory only changes the pulse width and the amplitude of the Aban a bad piece "remembers" and determines the triggering impulse device of the sorting machine can only then be actuated.

tigt if the particular piece is in the range of a The known sorting arrangement is not Discharge nozzle is located. With known Sortieranord- can be switched to individual pieces of different types.

However, this is particularly important for very fast sorting analog components. Typical arrangements of great importance, for example when the examples of such sorting machines are described in the arrangement for sorting individual items above-mentioned USA patents,
different weight is to be readjusted In a line concentric to the axis of the drum 12 and the individual pieces see 5 despite different inertia is a series of metallic cores 24 to the discharge points are to be fed exactly. is provided, which is preferably incorporated in the drum 12. Here, the sorting capacity might have to be embedded. A core is to be wrestled for each clamp 14. If the individual gaps are seen when sorting, ie cores and clamps are to be tested in a larger area, the test must be for a ratio of 1: 1. In the concentric path of the cores in a small surface area of the individual item 24, a removal head 26 is restricted adjacent to the drum, since otherwise variable magnetic resistance is additionally arranged adjacent. This barte individual pieces from the test would also be detected. If the area of the individual coupling to be tested is to be enlarged, for example by means of a translation piece, the distance between 15 would have to be arranged in order to eliminate faulty sliding mounting device 28 in such a way that it would be enlarged along the path of the cores 24 individual pieces what is a recordable. In this way the phase position can be reduced to the sorting capacity. by the removal head 26 when walking past

The present invention aims to provide a metallic core 24 relative to the ferrules

reasons to be set in an arrangement of the 14 in question by the operating points of the

Type of time and duration at which the slide 20 head is adjusted by the mounting device 28,

register-controlling "bad" signals and the pick-up If a core 24 passes the pick-up head 26-

If thrown signals are moved to individual items to be sorted, the one scanned by the head changes

different types, e.g. different weight magnetic path, from which a voltage change

or customizable to different size. tion on the head and thus an output pulse from the

This task is performed with an arrangement that results in one head.

In place of the above-described magnetic detachment, the above-mentioned type according to the invention is that the signal of the clock circuit is sent to a sensing device with first monometallic cores, which can be set to a pulse duration T, and a pick-up head 26, vastly stable multivibrator and a second one, embedded in the drum 12 Variable magnetic reluctance can also be used to control the pulse duration of about T / 2 adjustable multivibrators. In principle, any device can be used with a multivibrator to send a "bad" signal, which synchronously with each clamp triggers an AND gate in the shift register and is able to generate an electrical pulse.
when the second multivibrator is tilted back according to FIG. 1, the head amplifier 30 is also connected to the clock signals generated by a further, for setting 35, to two controllable monostable multivibrators 56 of the throwing time controllable monostable and 58. This monostable Multivibra-Multiyibrator control whose output pulse at gates 56 and 58 deliver under the effect of the concession with the "bad" signal at the output corresponding potentiometers 59 output pulses of the shift register via a for setting the variable pulse width. The monostable multivibrator 40, which can be regulated to vary the time-pulse duration, generates a constant of the monostable multivibrators 56 and generates the ejector pulse. 58 provided potentiometer 59 represent a

Further details of the invention result from storage time regulation. The potentiometers are

from the following description of an embodiment, preferably mechanically coupled to one another. In

example on the basis of the figures. It shows their common control range is the

F i g. 1 is a block diagram of an embodiment 45 equal to the delay of the monostable multivibrator 58

of the invention and half the delay of the monostable multivi

F i g. 2 A to 2 L a graphic representation of a brators 56. The monostable multivibrators 56 and

Sequence of signals from which the timing sequence of the 58 and others to be described below

Circuit from FIG. 1 can be seen. Active, controllable monostable multivibrators are on

F i g. 1 shows a sorting arrangement with a drum which is known and will therefore not be explained further 12 with a large number of equidistant tert. The output signal of the monostable multivi clamps 14, which is equally spaced radial brators 56, is based on a conventional AND gate extend away from the circumference of the drum 12. Wei- 60 given that continues to the exit of the Klasterhin a control amplifier 22 arranged on the circumference of the drum is coupled. The AND element Ejection device 16 is provided with which an air 55 60 is in turn connected to a shift register 38 with a flip jet on a certain clamp 14 'and thus on flops 40 to 46 and especially on its first flip one Piece 18 'of a series of pieces 18 to be tested coupled to flop 40. The monostable multivibrator judge is. This ejection device is located in 58 and is attached to a monostable multivibrator 32 specified distance from the test point. couples. This monostable multivibrator 32 is on Furthermore, a test 60 a buffer amplifier 34 is coupled to the circumference of the drum 12, the one Chamber 20 to check the clock pulse train 36 running through it to the 38 bil-force the shift register provided, whereby a flip-flops 40 to 46 are supplied by this test. This clock chamber The output signal generated 20 then on a pulse 36 is also sent to a controllable monosta classifying amplifier 22 is given when a bil multivibrator 62 is given, which in turn is sent to a bad piece is determined. The previously 65 second AND gate 64 is coupled. The exit The parts of the sorting machine written are only the shift register 38 (output of the flip-flop 46) given for example. Instead of the described, the second input of the AND element 64 is annen Components can of course also be eekoDDelt. The gate 64 lies on a reeelable

monostable multivibrator 66. The controllable mo- tor 62 and the flip-flop 46 a positive signal nostable multivibrators 62 and 66 have varia- deliver. At this point in time, the driver circuit delivers ble time constants and thus variable delay 68 an ejector driver pulse 80 (FIG. 2 N). on times, as indicated by the monostable, this way determines the delay time of the mo multivibrators 56 and i> 8 was executed. The 5 nostable multivibrators 62 the time (between two Output signal of the monostable multivibrator 66 successive clock pulses 36) to which the is generated on a driver circuit 68 in the emitter circuit pulse 80 and the release device given. The circles 66 and 68 form a controllable 16 begins to work. The delay period 82 Shedding driver stage 48 '. By this stage 48 'of the monostable multivibrator 62 can by changing Ejection device 16 actuated. change of its time constant by a not shown

As can be seen from Fig.2A to 2L, set potentiometer, which an ejector pulse the arrangement according to FIG. 1 represents different additional layer regulation, can be changed. Corresponding, adjustable timing processes can be set the delay width 84 of the monostad. Thus, impulses 51 from the head amplifier become a multivibrator 66 by changing it (Fig. 2 A) on the controllable monostable multivi- 15 time constant by means of a delay angle indicator 56 and 58 are given and cause an antiometer to be changed, reducing the duration change of their switching states, d. That is, the multivid of the operation of the throwing device 16 desrebrators provide output signals 70 and 72 according to which is varied accordingly.

F i g. 2 B and 2 C. The delay time of the mono can be seen with the arrangement according to F i g. 1

stable multivibrator 58 is preferably equal to the 20 an improved sorting capacity can be achieved. half the delay time of the monostable multivi- This is the case, for example, when larger pieces brators 56 in their control range, whereby the clock uniform colors are sorted. In one of the impulses 36 (Fig. 2 D) always roughly in the middle of the case like this, it is sufficient to only cover part of the "Dead time period" 73 of the monostable multivibrator to be tested piece directly above the clamp to "ob-56 (Fig.2B). The potentiometers 59 are to be disregarded in order to determine that the piece is good or speaking of half the ratio between being bad. An "observation" of a larger one a "dead time period" 77 (Fig. 2C) and 73 part of the piece increases the possibility of that too (Fig. 2 B) mechanically coupled, creating one of the remainder of an adjacent bad piece Change in the delay time of the monostable "observed", which possibly also Multivibrators 56 and 58 (and thus the width of the 30 can be thrown off a good deal. In place "Dead time period" 73 and a "storage time period" of a reduction in the number of pieces hal-75, Fig.2B) whose ratio is not changed, tending to force, which leads to a reduction in Sorobwohl the timing of the clock pulses would lead to animal capacity, allows the arrangement changed will. tion according to the present invention to avoid

If a bad piece through the test chamber 35 of the aforementioned problem is a variation of the 20 is determined, the classifying amplifier 22 delivers storage time control via the monostable multi-line the bad piece indicative signal 74 brators 56 and 58, thereby increasing the ratio of (Fig. 2E) to the AND gate 60, which continues to store time and dead time (for example Fig. 2B) the output signal 70 of the monostable multivibia is adjustable. In this way the time wähtors 56 receives. The AND element 60, however, supplies the number of pieces in the sorting machine no output pulse 76 (Fig. 2 F) until the eighth ”are easily input-output signal by electronic means of the monostable multivibrator 56 are made and regulated.

becomes zero. However, the circuit can also be used in this way.

be designed so that positive impulses for the application position control the adjustment of the entire pre-application come. The impulse 76 is then set up as an electronic adjustment of the posist Flip-flop 40 of the shift register 38 given, tion of the ejection device 16 along the periphery which is then possible in synchronism with the clock pulses 36 and the drum 12. The arrangement according to with synchronous to the speed of the drum 12 its the invention can also ver switching states for sorting processes changes until an output signal is turned off at which the pieces to be tested last flip-flop 46 (Fig. 2G to 2J) to the AND 50 instead of on a rotating drum straight linear Link 64 is supplied. The adjustable monostable can be moved. In addition, the kernels can Multivibrator 62 provides an output signal 78 either in alignment with ferrules 14 or 24 (Fig. 2K) to the AND gate 64, which in turn is arranged between the clamps 14 somehow Output signal to the controllable monostable, with a correct phase position by means of a single multivibrator 66 and the driver circuit 68 supplies the 55 places of the pick-up head 26 by translational The monostable multivibrator 66 cannot move for such a long time be triggered until both the monostable is multivi.

1 sheet of drawings

839

Claims (1)

in which individual items are checked and individually Claim: to be guided through the test chamber are memories in the form of rotating capacity arrangements, Arrangement for sorting individual pieces of magnetic tapes, etc. provided. In the case of a storage unit with a test chamber and a transport device feeding the test chamber with a test chamber, a timing drum with a large number of contact and drop points for good and speaking circumferential lines is used, with a timing drum Capacities are connected to the Konschaltkreis for generating clock pulses syn- taktpaare. The timing drum chronologically to the speed of the Transpoitvorrich- 10 is set in rotation by the transport drum for the test as well as with one of the clock pulses, whereby the shift registers which can be advanced are charged with one when a bad piece is detected in terms of the timing between the test chamber will. In the case of rotating drums, the number of capacities corresponding to the dropping point is used to put the dropping device flip-flops into operation, with a Schlechu signal from the testing device being discharged when the bad piece of the first flip-flop enters a defined area The area of the ejection device. One of the positions flips and this signal after passing through like memories in the form of a rotating capacitive shift register an ejection device actuating arrangement is for example in the USA patent, characterized in that documents 2625 265 and 2244826 are described. The known memories, which are similar to the signal of the clock generator circuit (26, 30), are, however, very poor T / 2 is limited in its functionality since it controls the adjustable multivibrator (58) so that a rapidly rotating sorting arrangement is subject to centrifugal forces of its own when the first multivibrator is tilted back.
(56) pending »bad« signal via a magnetic tape or AND gate (60) the shift register (38) triggers drum memory exposed to wear effects; she and that the berm tilting back of the second still have the disadvantage that additional me-multivibrators (58) generated clock signals (36) mechanical mechanisms (for example a magnetic further, for setting the dropping time tables, drum, read and write heads, drive point controllable monostable multivibrator men for coupling to the sorting drum) (62) control, the output pulse (78) of which are capable of rotating the drums synchronously Concession (64) with the "bad" signal on. In particular the belt coupling The output of the shift register (38) leads to position disturbances. Furthermore Setting the pulse duration adjustable monostatic 35 change in both tape and drum storage The multivibrator (66) generates the ejector pulse, the input pulse as well as that from the tape, read pulse very strong as a function of the gap between the magnetic head and the tape. In order to improve the trigger pulse, this gap must be very large