CH683766A5 - Vibratory conveyor with baffle for turning workpieces - has downwards-projecting cylinder on bracket engaging ends of workpieces - Google Patents

Abstract

The baffle device is used for turning workpieces (7) moving along a vibratory conveyor. The conveyor may consist of a shelf (4) winding in a shallow ascending spiral round the inside of the wall (5) of a vertical cylinder. The shelf may slope gently toward the wall of the cylinder to keep the workpieces from falling off the edge. The baffle consists of an arm extending from the wall with a cylindrical portion (6) extending downwards to engage the rectangular parts (8) of the workpieces. The cylindrical portion stops short of projections (9a,b) at the ends of the workpieces. It engages each workpiece end closer to the wall than the centre of gravity of the workpiece. USE/ADVANTAGE - Vibratory conveyor with baffle device for turning workpieces.

Description

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Technical field

The invention relates to a baffle-built for a vibrating conveyor for generating a stream of aligned and / or ordered mass parts. The invention also relates to a vibrating conveyor with such a baffle built-in, to a method and to the use of such a baffle built-in.

State of the art

So-called vibratory conveyors can be used wherever bulk parts delivered in bulk have to be fed piece by piece in a certain orientation and in a given time to a magazine, a machine or an assembly device. Such sorting machines have been known for a long time and are e.g. offered for sale by the company AEG Aktiengesellschaft Vibrationstechnik, Goldsteinstrasse 238, D-6000 Frankfurt (Main) 71. They basically consist of a cylindrical or conical part conveyor head, which is attached to a vibration device. Along the cylindrical, respectively. conical outer wall is a spiral track led upwards. The spiral track is equipped with very specific baffles that are aligned with the mass parts to be sorted. The parts that are disordered on the bottom of the pot move upwards under the action of the vibration movement on the spiral track. The baffles are used to select the parts with the desired orientation from the initially disorganized parts. The unselected parts are eliminated, i.e. they fall back into the pot. At the end of the spiral track, all parts of the mass have the same orientation.

A typical area of application for such vibratory conveyors is the sorting and alignment of screws. Accordingly, there is a large number of different baffles for this application.

Presentation of the invention

The object of the invention is to provide further baffle internals of the type mentioned, which are particularly suitable for aligning and sorting cuboid mass parts, such as Semiconductor components are suitable.

In particular, it is also an object of the invention to provide a sorting device for a vibrating conveyor which is suitable for sorting SMD components (SMD = Surface Mounted Device) delivered as bulk goods.

According to the invention, a baffle installation of the type mentioned is characterized by a projecting element which projects into a movement space of the mass parts conveyed on a transport path in such a way that at least some of the arriving mass parts on the element mentioned move laterally outside an undisturbed movement path of the center of gravity of the respective one

Bump the contact point lying in the mass with its surface and, as a result, preferably be rotated by 90 ° under the continuous effect of the conveying force.

According to the invention, at least all those parts of the mass that arrive oriented in a certain way are thus rotated. Those parts that do not have the desired orientation are e.g. not rotated or in a clearly wrong orientation for the subsequent chicane resp. Position.

Depending on how much the element protrudes into the movement space of the respective mass part, this is rotated more or less. The element is preferably dimensioned such that the mass part performs a 90 ° rotation in each case.

So that the mass part also performs the desired rotation and does not slide off prematurely from the projecting element, it is advisable to provide the element mentioned in the area of the contact point with a surface curved around a vertical axis, on which the contact point between the mass part and element is located during the rotation moved. In the area of the first contact point, i.e. where the incoming mass part touches the element for the first time, the tangential plane to the surface of the element should be as steep as possible (e.g. at an angle of more than 45 °), but preferably essentially perpendicular to the undisturbed path of movement of the mass part. In this way, the rotary movement can be initiated reliably. It is not in the sense of the invention if the tangential plane in the first contact point is inclined so weakly with respect to the forward direction that even the mass parts to be rotated only slide along the surface of the element without experiencing the torque according to the invention.

The surface of the element is preferably curved in a cylindrical manner in the region of the contact point, the axis of curvature of the surface being offset laterally with respect to the movement path of the center of gravity of the mass part. The element can be completely or only segment-like cylindrical or peg-shaped.

To align or To arrange essentially cuboid mass parts, each with asymmetrical arrangement with respect to a central plane between the back and abdominal surface of the cuboid and leg-like extensions projecting laterally outwards, the baffle installation according to the invention has an under or Above the median plane of the incoming mass part, the free space in which the legs of the mass part come to rest only when the mass part is conveyed in a certain position and with its cuboid body abuts the protruding element in the contact point, so that only the correctly arriving mass parts the correct radius around the protruding element and can be selected by subsequent chicanes. So if the mass part (e.g. semiconductor component) arrives in an undesired position, then it bumps e.g. with one leg on the projecting element and

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is consequently rotated with a much too large radius. According to the chicane, it is laterally offset from the correctly oriented mass part and can be eliminated without any problems.

Depending on whether the desired position should be the back position or the prone position of the semiconductor component, the projecting element projects upwards or downwards into the movement space.

If the substantially cuboid mass part on one of its surfaces, a groove-shaped recess. Has a recess with a certain profile, then the chicane for rotating the mass parts can preferably be combined with another, second chicane, which is designed as an elongated rail and on which the mass parts correctly rotated by the first chicane are conveyed riding on the positively adapted rail profile .

In order not to get them on the rail correctly, i.e. To eliminate astride components, the rail can be sloping and / or narrow on both sides, so that the unwanted mass parts fall back into the pot.

In order to make it easier for the mass parts rotating on the first baffle to sit on the machine, the rail is preferably curved at its end facing the first baffles in accordance with the radius of the correctly rotating mass parts and thus better sorted accordingly.

Preferably, the rotating chicane is preceded by a third chicane separating the mass parts and / or orienting in the longitudinal direction. This ensures that a rotating mass part is not disturbed by a mass part moving at the same height. If the third chicane performs a longitudinal alignment, then the cuboid components can only arrive at the rotating chicane in four different positions.

To e.g. To eliminate damaged semiconductor components after the rail-shaped chicane, a profile fit can be provided at the end, which e.g. Eliminate components with bent legs.

According to the invention, mass parts which have a trough-shaped recess on a belly side with a predetermined profile are sorted essentially in two steps using a vibrating conveyor. In the first step, the mass parts are rotated essentially by 90 ° by means of a projecting element. In a subsequent second step, an elongated rail, the rail profile of which is adapted to the recess, is used to sort out those mass parts whose channel-shaped recess is aligned parallel to the conveying direction. All parts of the mass that are not straddled by the rail are eliminated.

The mass parts are preferably separated beforehand with a suitable chicane. Finally, you will be advantageously subjected to a profile test.

Mass parts, the recess parallel to one

The short side of their cuboid body is initially aligned in the longitudinal direction so that they can move astride the rail when they are turned by 90 °.

The procedure resp. the baffles are particularly suitable for sorting SMD diodes of the type BP 104 BS.

Further advantageous embodiments of the invention result from the following description and the patent claims.

Brief description of the drawings

The invention will be explained in more detail below on the basis of exemplary embodiments and in connection with the drawings. Show it:

Fig. 1a, 1b is a schematic representation of a vibrating conveyor in cross section and in plan view;

2a, 2b a chicane according to the invention for rotating mass parts;

3 is an illustration of the different turning radii caused by the different positions;

4 shows a section through a rail-shaped baffle according to the invention with an astride semiconductor component;

5 shows a representation of the combination consisting of two baffles;

6 shows a profile fit for checking the position and integrity of the ordered components; and

7 shows a schematic illustration of a particularly preferred combination of chicanes for sorting semiconductor components.

In the figures, the same parts are basically provided with the same reference numerals.

Ways of Carrying Out the Invention

1a, 1b shows a vibratory conveyor known per se. It essentially consists of e.g. cylindrical pot 1, which is placed on a vibrator 2. The pot 1 has a bottom 3 which preferably rises conically towards the center. On the inside of an outer wall 5, a conveyor track 4 winds upward in a spiral. The conveyor track has a certain width d and is slightly inclined laterally against the outer wall 5, so that it acts as a kind of guide trough.

The mass parts to be sorted are emptied as bulk goods onto the bottom 3 of the pot 1. Under the effect of the vibration of the vibrator 2, the mass parts move outward, reach the conveyor track 4 and move upwards on it. In the present example, the mass parts move clockwise (see arrow R).

The baffle internals according to the invention described below are arranged along the conveyor track 4 or preferably at the end thereof. In FIG. 1b, 16 denotes a sorting device arranged at the end of the conveyor track 4

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with a combination of at least two baffles for aligning semiconductor components. In the following, the individual baffles are first explained in detail in order to make their combination effect all the more clear at the end.

2a, 2b shows a baffle installation according to the invention for rotating a mass part. In the illustration according to FIG. 2a, the conveying force (in vector form) points away from the viewer (perpendicular to the plane of the drawing). Due to the slight inclination of the conveyor track 4 against the outer wall 5, the mass part, which e.g. is a semiconductor component 7 and has a cuboid body 8, essentially along the inside of the outer wall 5. In the area of the baffles, it runs approximately on a straight line, provided that it is not disturbed. But this is precisely what the baffles do with a projecting element 6. This protrudes into the movement space of the semiconductor component 7. I.e. the semiconductor component 7 abuts with its cuboid body 8 on said element 6, so that it has to change its direction of movement.

The first contact point between the cuboid body 8 and the projecting element 6 is identified in FIG. 2a, 2b with the reference number 12. This contact point 12 is laterally offset from the undisturbed path of the center of gravity 11 of the mass part. This creates a lever arm Y (FIG. 2a) which, together with the conveying force 10, leads to a torque. The semiconductor component 7 thus begins to rotate about the contact point 12.

According to a preferred embodiment of the invention, the element 6 has a cylindrical extension. Thus, at least in the area of the contact point 12, it has a surface curved about a vertical axis of curvature 13. Thus, when the mass part rotates, the contact point 12 migrates outward on the cylindrically curved surface, i.e. away from element 6 against the opposite edge of the conveyor track and thus in the same direction as the center of gravity 11, but not to the same extent.

2b shows the semiconductor component 7 in an intermediate position (after passing through a 45 ° position). It is obvious that in the present example with the cylindrical extension, the semiconductor component 7 is rotated by a total of approximately 90 ° through the chicane. It is then at a very specific distance from the inside of the outer wall 5. It is determined by the distance b from the edge of the projecting element 6 which projects furthest into the conveyor track 4. This previously known distance b can be used with a subsequent baffle to to eliminate incorrectly oriented mass parts.

2a, 2b, the effect of the projecting element 6 is described with reference to a semiconductor component arriving in the longitudinal direction and on the belly side, which has also been nicely conveyed along the inside of the outer wall 5. This can be achieved with a simple, upstream baffle, which is described in more detail below. However, this longitudinal alignment is not essential for the functioning of the invention. It is clear that a purely cuboidal semi-conductor component that arrives in the transverse direction is also rotated if it arrives essentially along the wall or at least not too far from it.

On the other hand, it is important that the mass parts are conveyed individually so that the rotation of the correctly conveyed mass parts is not disturbed or prevented by other mass parts moving at the same height. It is also clear that the mass parts, which are occasionally conveyed one behind the other, have to move on approximately the same movement path, so that they require essentially the same movement space. This is the only way to dimension the projecting element 6 according to the invention (generation of a torque by specifying a suitable contact point). Of course, it is not essential that the mass parts are conveyed along the outer wall 5. If, in fact, the flow of the separated mass parts has a predetermined distance from the outer wall 5, then the projecting element 6 simply has to protrude further into the conveyor track 4 (further to the right in FIGS. 2a, 2b).

With the projecting element according to the invention, angles of rotation of up to a maximum of 90 ° can be achieved. Conversely expressed: Even if the 90 ° rotation represents the maximum and preferred value, with a corresponding design of the element (choice of the first contact point and the curvature of the surface), a smaller angle of rotation can be achieved. In addition, it should be noted that when already partially rotated, i.e. mass parts conveyed at an angle, the angle of rotation caused by the projecting element 6 becomes smaller anyway.

Especially when it comes to achieving the maximum, preferred 90 ° rotation, it is advantageous if the tangential plane to the curved surface of the projecting element in the area of the first contact point more or less perpendicular to the undisturbed direction of movement of the mass part or. to the conveyor 10 is. This can prevent the mass part from "evading" the torque due to undesired sliding off of element 6. This starting condition can of course also be achieved with e.g. elliptically curved surface can be realized.

The angle between the tangential plane and the direction of movement does not necessarily have to be 90 °. It is sufficient if it is so large that «evasion» can be prevented. This should already be the case from 45 °, taking into account the circumstances of the individual case.

As already mentioned, the baffle installation according to the invention not only has a rotating effect but also a positioning effect, in the sense that mass parts which have a different extent in the conveying direction than transversely to the conveying direction continue to move on different trajectories after the rotation. For example, the center of gravity of a cuboid body on a projecting5

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the element 6 further outward path when it has run onto the element 6 in the longitudinal direction than in the transverse direction. As a result, for example, the mass parts which are undesirably rotated in the longitudinal position can be eliminated through a suitable opening in the conveyor track 4, in which only the mass parts rotated in the longitudinal direction then fall.

In the following, an additional refinement of the baffle components is described, on the basis of which SMD components in particular can be sorted or oriented. Such semiconductor components typically have a more or less cuboid body from which leg-like contact pins protrude laterally. Based on the term “beetle”, which is often used colloquially for these semiconductor components, the cuboid body 8 thus has a back side 81 and an opposite abdominal side 82. Connection legs 9a, 9b are provided on narrow sides 83a, 83b. The connecting legs 9a, respectively. 9b emerge from the body more or less in the middle of the narrow sides and are bent towards the abdominal side. At the level of the plane defined by the abdominal side 82, they are finally bent outwards. They are thus laterally protruding, as can be seen from FIG. 4, which will be described later.

In order to sort such "beetles", the baffle installation according to the invention additionally has a free space 17. This is provided between the conveyor track 4 and the projecting element 6. It therefore arises from the fact that the element 6 projects from above into the movement space of the semiconductor components to be sorted, without reaching down to the conveyor track 4 itself.

The connecting leg 9b comes to rest in this free space 17 when the semiconductor component 7 conveyed in the longitudinal direction abuts the projecting element 6 with the narrow side 83b of its cuboid body 8. The free space 17 is dimensioned such that the rotation of the mass part caused by the projecting element 6 is not impaired. In the present case, this means that the connecting leg 9b moves unhindered under the cylindrical extension. -can be turned.

On the other hand, the free space 17 is dimensioned in such a way that only the semiconductor component arriving in the desired position (in the present case on the belly side 82) is correctly rotated around the chicane. According to FIGS. 2a, 2b, the cylindrical extension protrudes from above into the movement space of the current of the semiconductor components. It ends at a defined height above the conveyor track 4 in such a way that the connecting legs only come through at the bottom when the «beetle» arrives on the belly side. This is ensured if the cylindrical extension extends to the level of the central plane with respect to the back 81 and the belly 82.

If a semiconductor component (undesirably) lying on the rear side 81 arrives, then it bumps with its connecting leg 9b and not with its cuboid body 8

on the projecting element 6 and is consequently rotated with a different, in particular much larger radius. A semiconductor component arriving on the elongated narrow side is either rotated in an analog manner or undergoes some other uncontrolled movement. Thus, only the semiconductor components conveyed in the longitudinal direction on the belly side are correctly rotated by the chicane. You can therefore be selected by a subsequent chicane in the manner already described.

In order to clarify the position-dependent turning radius, a cam-like projecting element 18 for sorting e.g. T-shaped mass parts shown. The shape can be constructed in such a way that from a cuboid or. Rectangle two adjacent corners are cut out at right angles, so that the T-shape shown is created. By cutting out the corners, a mass part that is asymmetrical with respect to the original longitudinal direction has been created. This asymmetry can now be used to give the mass part a different turning radius depending on the positions. For example, the center of gravity of a component arriving in position L2 is rotated by a larger radius R1 than that arriving in position LI (turning radius R1). It is therefore clear that the invention is not limited to cuboid or even special SMD components.

In the following, a particularly preferred embodiment of a second chicane connected downstream to eliminate the parts of the mass which are not correctly rotated or rotated with the wrong radius will now be described. It will be explained using the example of an SMD diode of the type BP 104 BS from Siemens. In addition to the features already described, this diode has a groove-shaped recess on its belly side. This recess is now used according to the invention to fish out the correct ones from the stream of the turned components.

Fig. 4 illustrates the principle of this chicane. It is essentially a rail 14, which is adapted in a form-fitting manner to the groove-shaped recess 84 of the semiconductor component 7. If this rail 14 directly adjoins the first chicane shown in FIGS. 2a, 2b, then the SMD components rotated in the transverse direction can be selected selectively, because only they astride the rail 14 or. be able to set the profile-adjusted lead. All differently positioned components either slide away to the left or right and can e.g. can be eliminated by openings 14 arranged on both sides of the rail. In order to obtain a quick and clean separation of the differently oriented components, the rail 14 is preferably provided on both sides with inclined surfaces 141 and 142, on which the improperly positioned semiconductor components can slip.

Fig. 5 shows a particularly preferred baffle combination. It comprises the rotating, projecting element 6 and behind it the leading one

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Rail 14. The semiconductor component 7 provided with the recess 84 (assumed to be triangular) (cf. the three parallel dashed lines) rotates around the projecting element 6 as described with reference to FIGS. 2a, 2b. Even before it has rotated completely, it runs it onto the ramp-like end 143 of the rail 14. The end 143 is preferably curved in accordance with the movement path of the rotating semiconductor component 7 around the projecting element. The advantageous effect is obvious: the correctly rotated mass parts are reliably placed on the rail 14.

Depending on how the end 143 is formed, it can e.g. (in the desired way) "break off" early and lead diagonally outwards (i.e. away from the projecting element) onto the rail 14. The distance of the rail 14 from the outer wall 5 can thus be adapted to the needs to a certain extent.

FIG. 6 shows another chicane with which the semiconductor components riding on the rail 14 can be tested for bent connecting legs 9a, 9b. It is essentially a fit 15, the opening of which corresponds to the contour of the component viewed in the direction of movement and riding on the rail 14.

7, a particularly preferred embodiment of the invention will now be shown, which is particularly suitable for sorting or. Sorting semiconductor devices of the type of the already mentioned diode BP 104 is suitable. FIG. 7 shows a section of the conveyor track 4 of the vibrating conveyor with a sorting device 16 (only indicated schematically in FIG. 1). The first, upstream chicane A only allows those from the incoming stream of semiconductor components to pass that are oriented in the longitudinal direction. The chicane A is essentially a narrowing of the conveyor track 4, respectively. a suitably formed recess in the conveyor track 4. A transversely placed semiconductor component 71 will fall off the conveyor track because its center of gravity is too close to the outer edge of the conveyor track 4. A component 72 oriented in the longitudinal direction, on the other hand, will advance at the constriction.

The following sorting device is used to select a very specific position from the four possible positions that a substantially cuboidal semiconductor component oriented in the longitudinal direction can have. This selection is achieved according to the invention with a combination of two baffles (Fig. 5). The combination according to the invention comprises a baffle according to FIGS. 2a, 2b and a downstream baffle according to FIG. 4. On the baffle assembly B rotating the mass parts, the SMD diodes supplied are rotated through 90 ° in the transverse position and then directly from the rail (FIG. 4 ) picked up.

In principle, there are four different types of game in the sorting process.

The first case concerns the diode delivered in the correct position. I.e. the semiconductor component is oriented in the longitudinal direction on the outer wall 5 and lies with the connecting legs on the conveyor track 4. Such a diode is placed with the connecting legs, as described with reference to FIGS. 2a, 2b, under the cylindrical extension according to the invention and with the cuboid Bump the body at the contact point on the extension. Since the extension does not touch the diode centrally, but slightly offset to the left, the contact point (reference numeral 12, FIG. 2) and the center of gravity of the diode result in a lever Y which, as mentioned, generates a torque with the aid of the continuously acting delivery force 10. This torque rotates (C) the semiconductor device 75 90 ° to the right (i.e. counterclockwise), with the extension being the center of the rotational movement.

After the 90 ° rotation, the semiconductor component hits the ramp-shaped end 143 of the rail 14. When rotated correctly about the chicane B, the semiconductor component 76 sits positively with its belly side on the rail 14. The diode then moves astride (D) on the rail 14 and passes the narrowing, which is limited by the openings F, without any problems.

As an additional security, a fit G according to FIG. 6 is attached to the other end of the rail 14. All semiconductor components are guided through this profile, which, as mentioned, is adapted to the outer contour of the diodes. They then leave the sorting device in order to be filled into a storage rail 18.

Diodes with bent connection pins hang on the fit and are pushed back into the pot by the subsequent diodes. This effect, which can be observed in practice and is in fact surprising, is probably due to the fact that the semiconductor component, which touches the profile with its connecting legs! is pressed so strongly against the delimiting wall 15 by the advancing ones that it rotates away from its riding position or. is lifted up, and as a result falls back into the pot. Surprisingly, there is no backlog blocking the sorting device as a whole.

The further conveyance into the bearing rail 18 takes place through the remaining parts of the vibration of the vibrating conveyor. After the storage rail 18 has been filled, it is removed from the device and e.g. fed to the placement machine.

In the second variant, the diode is delivered lying on the back. In this case, the connecting legs will not plunge into the free space (cf. FIGS. 2a, 2b: reference number 17), but will abut the projecting element B. As a result, the semiconductor component will perform a rotational movement with a larger radius by the length of the connecting legs. It will thus fall into the opening F to the right of the rail 14.

According to the third variant, the semiconductor component 73 moves with the back side along the outer wall 5. As a rule, it will also abut the projecting element with its connecting leg and not with its cuboid body. As with the second variant, enlarged

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this causes the turning radius so that the component moves in area E to the right of the rail and falls into opening F. The same happens when the semiconductor component arrives with its belly side along the outer wall 5 (fourth variant).

In principle, chicane A can also be omitted. Then cross-positioned semiconductor components also hit the chicane B. Regardless of whether they experience a rotation or not, they are eliminated by the rail-like chicane in the area F. When they turn, they can no longer sit on the rail 14 with their trough-shaped recess on the belly side. Rather, they will either slide to the left or to the right and then fall into one of the two openings F. If, on the other hand, they are not rotated, they usually get caught in some unfavorable position, gradually slide off in an uncontrolled manner and therefore cannot straddle the rail 14 either.

In order to ensure that as far as possible all of the mass parts arriving in the correct position at chicane B are conveyed onto the rail 14 in a “saddle-proof” manner, the rail 14 preferably rises at the end in a ramp-like manner and / or at least partially curves around the projecting element in accordance with the rotation of the mass parts (FIG. 5 ).

With their low masses, the SMD diodes of the type mentioned represent a good that is difficult to convey. In particular, excessive vibrating speeds and vibrating amplitudes cause the diodes to bounce. Many will therefore fall back into the pot. On the other hand, if the funding conditions are set too weak, the diodes will get caught and will not be delivered. The correct setting of frequency and amplitude is responsible for how many diodes can be delivered per minute. If only enough mass parts are delivered per minute, it does not matter how many of the components get stuck on the baffles and fall back into the pot.

In order not to provoke a bottleneck in the material flow, there should always be several mounting rails so that there is no time difference between loading and filling the diodes.

In summary, it can be stated that simple means for sorting and filling bulk parts, in particular semiconductor components, have been created with the baffles according to the invention.

Claims (1)

Claims 1. Baffles for a vibrating conveyor (1, 2) for generating a stream of aligned and / or ordered mass parts (7), characterized by a projecting element (6, 18) which thus moves into a movement area of the mass parts conveyed on a transport path (4) (72-75) protrudes that at least some of the arriving mass parts (75) on said element (6) move laterally outside an undisturbed movement path of the center of gravity (11) of the respective Bump the contact part (12) of the mass (7) with its surface and, as a result, be rotated under the constant effect of the conveying force. 2. baffles according to claim 1, characterized in that the projecting element in the region of the contact point (12) has a curved surface about a vertical axis of curvature (13) on which the contact point (12) moves during the rotation of the mass part (7) , wherein a tangential plane in the first contact point (12) is preferably substantially perpendicular to the undisturbed movement path of the center of gravity (11) of the mass part (7). 3. baffles according to one of claims 1 or 2, characterized in that the element (6) in the region of the contact point (12) has a cylindrical curved surface, the axis of curvature (13) of the surface laterally opposite the undisturbed path of movement of the center of gravity (11 ) of the mass part (7) is offset. 4. baffles according to one of claims 1 to 3 for aligning respectively. Organize essentially cuboid mass parts (7), each with asymmetrically arranged extensions (9a, 9b) with respect to a central plane between the back and abdominal sides (81 and 82), respectively, characterized in that the baffles are installed over a respectively under has free space (17) above the center plane of the incoming mass part (7), in which the extensions (9a, 9b) of the mass part (7) only come to rest when the cuboid surface of the correctly conveyed mass part (7) at the contact point ( 12), so that only the correctly arriving mass parts (7, 75) with the correct turning radius are rotated around the projecting element (6) and as a result can be selected by a further, subsequent chicane. 5. baffles according to one of claims 1 to 4 for aligning respectively. Organization of essentially cuboid mass parts (7) which have a channel-shaped recess on a belly side (82) with a predetermined profile, characterized in that after the projecting element (6) in the path of movement of the correctly rotated mass parts, an elongated one oriented in the conveying direction Rail (14) is provided, which engages with its rail profile in a form-fitting manner in the recess of the mass part (7), so that the correctly arriving mass parts (7) can move astride the rail (14). 6. baffles according to claim 5, characterized in that the rail (14) is only just wide enough that the correctly seated mass parts (7) come by, but the incorrectly positioned fall down. 7. baffles according to claim 6, characterized in that the rail (14) at its end associated with the projecting element (6) is ramp-shaped and / or is curved in accordance with the movement path of the rotating mass parts, so that the correctly aligned dimensions 5 10th 15 20th 25th 30th 35 40 45 50 55 60 65 7 13 CH 683 766 A5 If necessary, parts can already be reliably placed on the rail profile during rotation. 8. baffles according to one of claims 1 to 7, characterized by an upstream baffle (A) for separating and / or longitudinally aligning the mass parts (71, 72, ...). 9. baffles according to one of claims 5 to 8, characterized by a downstream fourth baffle (15) for checking the contour of the sorted mass parts. 10. vibratory conveyor with a baffle according to one of claims 1-9 for ordering and feeding mass parts, comprising a pot (1), on the outer wall (5) of a conveyor track (4) running helically from bottom to top. 11. A method for aligning and / or arranging substantially cuboid mass parts (71-76), which have a groove-shaped recess (84) with a predetermined profile on a belly side (82), the mass parts (71-76) in a vibrating conveyor are conveyed on a conveyor track (4), characterized in that the mass parts (71-76) are rotated essentially by 90 ° by means of a projecting element (6, 18) and then with an elongated rail (14), the rail profile of which groove-shaped recess (84) is adapted, those mass parts (71-76) are sorted out whose groove-shaped recess (84) is aligned parallel to the conveying direction by eliminating the mass parts (71-76) that do not move astride the rail (14) . 12. The method according to claim 11, characterized in that the mass parts (71-76) are previously separated with a baffle. 13. The method according to claim 11 or 12, characterized in that the contour of the sorted mass parts (71-76) is finally checked with a downstream chicane (15). 14. Procedure for aligning resp. Ordering mass parts in which the recess (84) runs parallel to a short side of the cuboid body (8) according to one of claims 11-13, characterized in that the mass parts (71-76) with a baffle (A) in the longitudinal direction be aligned. 15. Use of a baffle according to one of claims 1-10 for sorting SMD diodes of the BP 104 BS type. 5 10th 15 20th 25th 30th 35 40 45 50 55 60 65 8th