DE102016102135B3 - PCB - transport system and manufacturing system - Google Patents

Abstract

The invention relates to a transport system (10) for moving printed circuit boards (1) within a manufacturing system (20) for processing printed circuit boards (1) and to a production system (20).

Description

The invention relates to a printed circuit board transport system for moving printed circuit boards within a manufacturing system for processing printed circuit boards and such a manufacturing system.

STATE OF THE ART

Circuit boards are flat electronic basic components that are suitable for equipping with electrical components, such. B. resistors, transistors, diodes or the like are formed. In an automated manufacturing system for processing printed circuit boards, such. As chemical or thermal treatment, printing, assembly, soldering, inspection, testing or the like, printed circuit boards are moved by means of a transport system for processing between processing stations. For an automated production, a precise identification of the individual printed circuit boards may be required to determine, for example, a respective position of the printed circuit board in the manufacturing system, type or configuration of the printed circuit board, nominal population or a processing state of the individual printed circuit boards.

For distinguishing printed circuit boards in a manufacturing system for processing printed circuit boards, such. As an assembly system, often barcodes are used, which are printed or glued, for example, on the circuit board. These barcodes are readable by detection devices arranged in the production system when the printed circuit board is arranged in a detection position in the vicinity of the detection device. Detection devices are for example at workstations, such. As pick and place machines, brazing furnaces or the like, arranged to identify the circuit board by reading the bar code and to configure the workstation for processing the respective circuit board. In a placement, for example, a placement program that z. B. determines an arrangement of the components to be arranged on the circuit board, adapted. In a soldering oven, based on such identification of the printed circuit board, a temperature profile can be adjusted accordingly.

The use of barcodes is inexpensive and allows a very accurate position determination of printed circuit board, since at the time of reading the barcode, the circuit board has a defined position to the detection device and a position of the barcode on the circuit board is precisely defined. Barcodes have the big disadvantage that in addition to an identification number of the circuit board hardly any other information, such. B. a manufacturing progress of the circuit board, can be integrated into the barcode. The manufacturing progress defines a state of the printed circuit board between the beginning of production to the finished or finished printed circuit board. Another disadvantage of barcodes is that they can easily become dirty, damage or possibly detach from the circuit board. Dirty or damaged bar codes can lead to read errors in the detection devices, which make automatic identification of the circuit board by a detection device difficult or even impossible.

Another way of identifying printed circuit boards is to use transponders. Transponders are electronic communication units which are designed to receive incoming signals and to automatically answer the incoming signals. Transponders have the advantage over barcodes that they are used to store further information, such as. B. a manufacturing state of the circuit board, test records, other production data or the like may be formed. A lot of storable data can be much higher for a transponder than for a barcode. Thus, when using transponders, for example, the allocation of specific serial numbers possible. Furthermore, transponders can be detected even with heavy soiling and with corresponding antennas over much greater distance than barcodes.

A disadvantage of transponders compared to barcodes are higher costs, since a barcode is printed in the simplest case, but a transponder depending on the variant, a variety of different electronic components, such. As a transponder antenna and a microchip and possibly a power source needed. A high detection range of transponders can often be disadvantageous in many manufacturing systems, especially if the printed circuit boards have relatively small dimensions and / or are arranged close to one another. In these cases, the transponders are detectable by a detection device but not always clearly assigned to a specific printed circuit board and position in the manufacturing system. Typical reading ranges in detection devices used in manufacturing systems for detecting UHF transponders are in the range of several meters. With such transponders, it is not always possible to locate a single transponder exactly and, for example, to associate it with a specific transport track of a transport system of the production system. Such transponders are therefore not particularly suitable for transport systems with closely spaced transport tracks.

From the DE 20 2010 014 862 U1 as well as from the EP 1 613 134 A2 are printed circuit boards with an integrated RFID microchip known.

DISCLOSURE OF THE INVENTION

It is therefore an object of the present invention to provide a transport system for moving printed circuit boards in a manufacturing system and a manufacturing system for processing printed circuit boards for processing printed circuit boards, which eliminate or at least partially overcome the disadvantages of the prior art. It is in particular the object of the present invention to provide a transport system for moving printed circuit boards within a manufacturing system and a manufacturing system for processing printed circuit boards, which enable simple and cost-effective reliable identification and localization of printed circuit boards within the manufacturing system.

The above problem is solved by the claims. Accordingly, the object is achieved by a transport system having the features of independent claim 1 and a manufacturing system having the features of independent claim 10. Further features and details of the invention will become apparent from the dependent claims, the description and the drawings. In this case, features and details that are described in connection with the transport system according to the invention apply, of course, for the inventive manufacturing system and in each case vice versa, so that with respect to the disclosure of the individual aspects of the invention always reciprocal reference is or may be.

According to a first aspect of the invention, the object is achieved according to the invention by a transport system for moving printed circuit boards within a manufacturing system for processing printed circuit boards. The transport system has at least two spaced-apart transport cheeks for receiving the printed circuit board in the transport system and a conveying device for transporting the printed circuit board along the transport cheeks through the manufacturing system. At least one of the transport cheeks is arranged as a near-field antenna detector antenna of a near-field detector for receiving a transponder signal arranged on or in a useful edge of the circuit board near-field transponder.

By means of such a transport system, printed circuit boards are movable within a production system for processing printed circuit boards to processing stations and / or through processing stations and / or from processing stations. The transport system has for receiving the printed circuit boards on two spaced-apart transport cheeks, for example, have an L-shaped or C-shaped cross-section. In an L-shaped cross-section, a first leg forms a bearing surface for the circuit boards and a second leg forms a lateral boundary, which prevents lateral slipping or falling. The transport cheeks are therefore arranged to each other such that the second legs are remote from each other. Transport cheeks with a C-shaped cross-section, at least in sections, a third leg, which limits a lifting of the circuit board from the transport cheek upwards.

To move the circuit boards, for example, on the first leg a conveyor device, such. As a belt or a roller conveyor, arranged for transporting the circuit board along the transport cheeks. The conveying device is movable in a direction of movement, so that a printed circuit board deposited on the conveying device is moved in this way in the direction of movement of the conveying device. Additionally or alternatively, it may be provided that such a conveying device is arranged on a side of the third leg facing the first leg.

At least one of the transport cheeks at least one designed as a near-field antenna detector antenna of a near-field detector is arranged. It can be provided that the conveying device for the arrangement of the detector antenna has an interruption or the detector antenna is arranged adjacent to one end of the transport cheek of the transport system or this end. A detector antenna preferably has a conductor loop with a matching network, by means of which a near field can be generated. The producible near field preferably has a detection range of between 1 mm and 15 mm. Thus, even small circuit boards, each having a near field transponder, can be detected by means of such a near field detector. The detection range is used to determine a detection range. A detection range is an area that is within the detection range and is limited by the detection range.

The detector antenna is therefore preferably arranged on the transport cheek such that a useful edge of a printed circuit board arranged on the transport system can be moved through the detection region of the detector antenna by means of the transport system. A near-field transponder of a printed circuit board arranged on the transport system is thus moved through the detection area as the printed circuit board moves past the detector antenna. Furthermore, an arrangement of the detector antenna in the vicinity of the use edge is preferred, since a collision with arranged on the circuit board electronic Components are particularly low and reliable detection of a single circuit board is possible.

All advantages, as have been carried out in detail to the circuit board according to the first aspect of the invention, also apply to the transport system according to the second aspect of the invention.

Preferably, the detector antenna is designed as an H-field antenna. An H-field antenna has at least one H-field detector antenna configured to communicate with an H-field transponder via its H-field transponder antenna. By means of such H-field antennas particularly short read or write ranges can be achieved, which extend only a few millimeters. Therefore, H-field detector antennas according to the invention are particularly suitable for the transport system according to the invention, as by means of the transport system according to the invention printed circuit boards are movable by the manufacturing system, that at most one H-field transponder of a printed circuit board according to the invention can be arranged in the detection range of the detector antenna. Thus, a detected printed circuit board can be uniquely identified from a plurality of printed circuit boards arranged on the transport system.

According to the invention, it can be provided in a transport system that at least one detector antenna is arranged on each of the at least two transporting cheeks. This has the advantage that by means of the transport system according to the invention printed circuit boards, which have only one near field transponder, are clearly detectable and a risk of non-detection of a circuit board is avoidable. In the case of only one detector antenna, a printed circuit board whose near-field transponder is arranged on the transport cheek without detector antenna could possibly not be detected because of the short range of the near field and would therefore have to be arranged differently on the transport system. In this way, a reliability of the transport system is further improved, as in a printed circuit board, which has a Nahfeld transponder on only one benefit edge, an assignment of the near-field transponder to a certain transport cheek is not required. This is particularly advantageous in two-sided PCBs that need to be turned over for this purpose.

It is preferred that the at least one detector antenna has a detection range of between 2 mm and 10 mm. It is important that the edge of benefit of be arranged in the transport cheek boards within the detection range of the detector antenna can be arranged. Thus, even small circuit boards, each having a near-field transponder, detectable by means of such a near field detector, wherein a simultaneous detection of multiple near field transponder is avoided by a detector.

It is advantageous for the at least one detector antenna to be arranged on the transport cheek in such a way that it faces frontally or obliquely to a utility edge top or bottom edge of a printed circuit board arranged in the transport system. Facing frontally means that the detector antenna is aligned parallel to a major surface of the printed circuit board which can be arranged on the transport cheek. Any deviation from this is skewed by pivoting the detector antenna about a horizontal axis, in particular around a horizontal axis running parallel to the conveying direction. Such an arrangement has the advantage that, depending on the application, detection range and collision safety can be optimized.

According to a preferred development of the invention, the at least one detector antenna is arranged on the transport cheek such that it faces a lateral edge surface of a printed circuit board arranged in the transport system. This is particularly advantageous in the case of transport cheeks, which have only a relatively short first leg or if printed circuit boards with a relatively small edge of usefulness have to be processed. By such an arrangement, a risk of collision with arranged on the circuit board electronic components can be further reduced. This is particularly advantageous for relatively small printed circuit boards.

More preferably, the at least one detector antenna has a detector antenna conductor loop with an 8-shaped configuration, wherein a node of the detector antenna conductor loop at the same or substantially the same height as transported by the transport system printed circuit boards. By means of such a detector antenna, a near field can be generated which has opposite field directions above and below the printed circuit board. A near-field transponder of a printed circuit board is preferably arranged exactly at the level of the field reversal point, that is, the node point of FIG. 8. Depending on the case of requirement, the 8-shaped configuration may also be distorted towards the first leg or the second leg, so that the node point is shifted downwards or upwards accordingly. Thus, with optimized space requirements, reliable detection of the near-field transponders of the printed circuit boards is ensured.

It can be inventively provided that the transport cheek has a recess with a lateral boundary wall for the circuit board, wherein the at least one detector antenna is arranged on the transport cheek, that this maximum 3 mm from a lateral Boundary wall is removed. The lateral boundary wall is formed, for example, as a second leg. Such an arrangement of the detector antenna has the advantage that it is arranged close to a useful edge of a printed circuit board arranged on the transport device. A collision-free and reliable detection of moving by means of the transport system near field transponder is thus improved.

The at least one transport cheek preferably has a shielding device, which is designed to shield a near field generated by the detector antenna in at least one direction away from the printed circuit board. Preferably, the shielding device for shielding in three directions - and the intermediate directions - is formed, namely perpendicular from the top, perpendicular to the side surface and vertically away from the underside of the circuit board. A shield in the direction of movement of the circuit board and the side surface is not desired according to the invention. This has the advantage that a reliability of detection is improved because the risk of accidentally detecting a printed circuit board arranged on an adjacent transport line is further reduced by the shield.

According to a second aspect of the invention, the object is achieved by a manufacturing system for processing printed circuit boards. The manufacturing system has a placement machine for loading printed circuit boards with electronic components and a transport system according to the invention for transporting printed circuit boards within the manufacturing system.

In addition, the manufacturing system, for example, a printed circuit board printer and / or a soldering oven and / or a Nutzentrenner and / or the like, such. B. SPI, AOI, ICT or FPI have.

All advantages, as they have been carried out in detail to the transport system according to the first aspect of the invention s, also apply to the manufacturing system according to the second aspect of the invention.

Circuit boards may include at least one mounting area for receiving at least one electronic component and a power edge for locating the board on a transport system for moving the board within a circuit board manufacturing system. A near-field transponder for transmitting at least one circuit board-specific information to a near-field detector of the transport system can be arranged at at least one point of the useful edge.

An assembly area can be the area of a printed circuit board to or on which electronic components can be arranged. The placement area may be bounded laterally by the benefit edge. The benefit edge may be a portion of the circuit board that is preferably not configured to house electronic components. In the case of printed circuit boards, the placement region can be arranged between two useful edge sections arranged parallel to one another. Alternatively, the placement area can be surrounded on all sides by the useful edge. The benefit edge may provide a contact surface for a transport system, particularly for a conveyor belt, for moving the circuit board.

At least one point of the useful edge, a near field transponder can be arranged. Thus, at least one near-field antenna of a near-field transponder can be arranged at the edge of the utility, for. B. held on a surface of the circuit board, in particular glued. The near-field transponder can be configured in such a way that essentially only this point of the useful edge on which the near-field transponder or the near-field transponder antenna is arranged can be detected with a near-field detector. Detecting essentially means detecting or reading out the near field transponder for identifying the printed circuit board. This may also include the reading and / or writing of further data, in particular printed circuit board-specific data and / or data relating to the manufacturing status of the printed circuit board. For the sake of simplicity, any interaction of a near field detector with the near field transponder will be summarized below under the term "detect".

Depending on the design, in particular as a function of a design of a transponder antenna of the near field transponder, the near field transponder can have a range of approximately 2 mm to approximately 10 mm. The near-field transponder is designed to transmit at least one board-specific information to a near-field detector of the transport system. Circuit board-specific information is preferably information about the shape and size of the circuit board, a target population of the circuit board, a manufacturing state of the circuit board, such. B. an actual equipment and / or a chemical and / or thermal treatment state. Further, board specific information may preferably be suitable for accurately identifying a single board, e.g. B. an individual, preferably unique assigned identification number.

A near-field transponder is understood to be a transponder which has at least the properties of a near-field transponder, so that pure near-field detection is possible in order to ensure precise identification and localization of a single printed circuit board. It can be provided that a hybrid transponder is used, which is detectable in both a near field and in a far field over distances of more than 10 mm to, for example, several meters.

It is the use of a near-field transponder with the smallest possible minimum range known in which a confusion of adjacent circuit boards on a transport line or two side by side extending transport lines does not exist. A minimum range is for example between 1 mm and 10 mm. The near field transponder has a minimum range, so that a detection of a near field detector arranged in a transport cheek of a transport system can reliably detect the near field transponder. A maximum possible range of the near-field transponder is dependent on a size and / or design of the printed circuit board. For relatively large printed circuit boards, the range of the near field transponder can be made larger than relatively small printed circuit boards.

A printed circuit board can only have one near field transponder. It can also be provided several near-field transponder. Also, an arrangement of at least one near-field transponder and a conventional transponder with a longer range is conceivable. Such a combination has the advantage, for example, that circuit boards of a new batch can be identified earlier and processing stations can be set up more quickly for the new batch, for B. by providing new electronic components for the assembly.

The integration of a near-field transponder into the useful edge has the advantage that a near-field detector for detecting the near-field transponder can be brought very close to the printed circuit board since the printed circuit board has no electronic components at the edge and thus a minimum height. A risk of collision of the near-field detector with an electronic component component is therefore not given at the benefit edge. In this way, near-field transponders with very short ranges of a few millimeters up to about 1 cm can be used. This has the advantage that a printed circuit board in a manufacturing system of a near field detector is reliable and clearly detectable.

It may be provided in circuit boards that the near-field transponder is integrated into the circuit board. The near-field transponder may be disposed between an upper side and a lower side of the printed circuit board, e.g. B. by encapsulating the near-field transponder with printed circuit board material such. B. epoxy. A minimum range of the near-field transponder can be designed such that it can also be detected through the circuit board layer covering it. Such an arrangement of the near-field transponder has the advantage that it is well protected from external influences, such. As mechanical influences, pollution or the like, as well as being protected against detachment from the circuit board.

A near-field transponder may be located closer to an edge of the edge of the printed circuit board than to the mounting area of the circuit board. The benefit edge may have a width of a few millimeters, in particular between 3 mm and 4 mm. The printed circuit board is limited by the peripheral edge. The near-field transponder can be arranged, for example, a maximum of 1 mm to 2 mm from the peripheral edge on or in the edge of the utility. Therefore, such an arrangement of the near field transponder has the advantage that a near field detector can also be arranged close to the peripheral edge and thus can have a distance from the component area. A collision risk of arranged on the circuit board electronic components with the near-field detector is thus reduced. Moreover, near field transponders with particularly short ranges can thus be used, since the near field detector can be brought close to the near field transponder. A risk of confusion between adjacent circuit boards is thus reduced. This is particularly advantageous for relatively small printed circuit boards, since in such printed circuit boards due to the small distances between adjacent printed circuit boards increased likelihood of confusion exists.

The near-field transponder can be designed as an H-field transponder. An H-field transponder has at least one H-field transponder antenna adapted to communicate with an H-field detector via its H-field detector antenna. By means of such H-field antennas particularly short read or write ranges can be achieved, which extend only a few millimeters. Therefore, H-field transponders are particularly suitable for printed circuit boards, which are close enough for detection to H-field detectors of a manufacturing system and are to be clearly identified from a plurality of printed circuit boards.

Further advantages, features, and details of the invention will become apparent from the following description of the figures, in which embodiments of the invention are described in detail with reference to the drawings. The in The features mentioned in the claims and in the description should each be essential to the invention individually or in any desired combination. Each show schematically:

1 a top view of a known circuit board,

2 a top view of a first embodiment of a transport system according to the invention,

3 a sectional view of the transport system 2 with arranged on it circuit board 1 .

4 a manufacturing system according to the invention,

5a a first arrangement of a near-field detector,

5b a second arrangement of a near-field detector,

5c a third arrangement of a near field detector,

6a a plan view of a first detector antenna according to the first and the second arrangement of 5a and 5b , and

6b a plan view of a second detector antenna according to the third arrangement 5c ,

Elements with the same function and mode of action are in the 1 to 6b provided with the same reference numerals.

1 schematically shows a circuit board in a plan view 1 , The circuit board 1 has a central equipment area 2 for receiving non-imaged electronic components that are not intended for assembly 3 the circuit board 1 is surrounded. The benefit edge, for example, has a width of about 3 mm to 4 mm. The circuit board 1 is by a marginal edge 5 of the useful edge 3 limited. At one point of the useful edge 3 is a near-field transponder 4 arranged, z. B. on a benefit edge top 6 of the useful edge 3 fixed. Alternatively, the near field transponder 4 also in the benefits margin 3 be integrated, in particular about 1 mm to 2 mm from the peripheral edge 5 away.

2 and 3 show different views of a first embodiment of a transport system according to the invention 10 , The transport system 10 has two spaced apart transport cheeks 12 in which in each case designed as a conveyor belt conveyor 11 is arranged. As in particular from 3 can be seen, the transport cheeks 12 in each case a cuboid recess in an upper section 14 with a lateral boundary wall 15 on. In an upper area of the recess 14 is in every transport cheek 12 a near-field detector 13 or at least one detector antenna 13a a near-field detector 13 arranged. In a lower area of the recess 14 is in every transport cheek 12 a conveyor 11 for moving the circuit board 1 in a manufacturing system 20 (see. 4 ) arranged. On the conveyors 11 is a circuit board 1 arranged so that the on the benefit edge top 6 of the useful edge 3 arranged near field transponder 4 one of the two near-field detectors 13 or detector antennas 13a facing and thus of this or this is detectable. The benefit edge 3 the circuit board 1 is essentially within the recess 14 arranged, with each lateral boundary wall 15 a lateral edge surfaces 8th the circuit board 1 directly facing.

4 schematically shows a manufacturing system according to the invention 20 with a pick and place machine 30 and a transport system 10 , The transport system 10 is formed, not shown, for example, unpopulated printed circuit boards 1 to the placement machine 30 out and populated PCBs from the placement machine 30 to move away. A near-field detector 13 or at least one detector antenna 13a a near-field detector 13 is right in front of the placement machine 30 in the transport system 10 arranged, so that a the placement machine 30 supplied circuit board 1 can be detected directly before loading. Alternatively, the near field detector 13 or the detector antenna 13a also within the assembly machine 30 in the transport system 10 be arranged.

5a . 5b and 5c show different arrangements of near-field detectors 13 or detector antennas 13a , In 5a is the detector antenna 13a in a first arrangement in an upper region of the recess 14 as well as parallel to the utility edge top 6 the circuit board 1 arranged. In 5b is the detector antenna 13a in a second arrangement in the upper region of the recess 14 obliquely, approximately at an angle of 45 °, to the utility edge top 6 the circuit board 1 arranged. This second arrangement allows the use of a larger detector antenna 13a as in the first arrangement according to 5a , In 5a is the detector antenna 13a in a third arrangement on the lateral boundary wall 15 the recess 14 as well as parallel to the lateral edge surface 8th the circuit board 1 arranged. This third arrangement allows the use of a larger detector antenna 13a as in the second arrangement according to 5b ,

6a shows a first detector antenna 13a according to the first and the second arrangement 5a and 5b , The first detector antenna 13a has a detector antenna board 13b with a detector antenna conductor loop disposed thereon 13c with an approximately rectangular trajectory. 6b shows a second detector antenna 13a according to the in 5c illustrated third arrangement. The second detector antenna 13a has a detector antenna board 13b with a detector antenna conductor loop disposed thereon 13c with an approximately 8-shaped trajectory on. As can be clearly seen, the second detector antenna 13a in an upper part and a lower part opposite magnetic field directions M on.

LIST OF REFERENCE NUMBERS

1

circuit board

2

assembly area

3

use edge

4

Near-field transponder

4a

transponder antenna

5

edge

6

Use edge top

7

Benefits bottom edge

8th

lateral edge surface

10

transport system

11

conveyor

12

transport cheek

13

Near-field detector

13a

detector antenna

13b

Detector antenna board

13c

Detector antenna conductor loop

14

recess

15

boundary wall

16

shielding

20

manufacturing system

30

assembly System

M

magnetic field direction

Claims (10)

Transport system ( 10 ) for moving printed circuit boards ( 1 ) within a manufacturing system ( 20 ) for the processing of printed circuit boards ( 1 ), comprising at least two spaced-apart transport cheeks ( 12 ) for receiving the printed circuit board ( 1 ) in the transport system ( 10 ) and a conveyor device ( 11 ) for transporting the printed circuit board ( 1 ) along the transport cheeks ( 12 ) through the manufacturing system ( 20 ), characterized in that on at least one of the transport cheeks ( 12 ) at least one detector antenna designed as a near-field antenna ( 13a ) of a near-field detector ( 13 ) for receiving a transponder signal at or in a utility edge ( 3 ) of the printed circuit board ( 1 ) arranged near field transponders ( 4 ) is arranged. Transport system ( 10 ) according to claim 1, characterized in that the detector antenna ( 13a ) is designed as H-field antenna. Transport system ( 10 ) according to claim 1 or 2, characterized in that on the at least two transport cheeks ( 12 ) at least one detector antenna ( 13a ) is arranged. Transport system ( 10 ) according to one of claims 1 to 3, characterized in that the at least one detector antenna ( 13a ) has a detection range of between 2 mm and 10 mm. Transport system ( 10 ) according to one of claims 1 to 4, characterized in that the at least one detector antenna ( 13a ) on the transport cheek ( 12 ) is arranged that this a benefit edge top ( 6 ) or benefit margin base ( 7 ) one in the transport system ( 10 ) arranged printed circuit board ( 1 ) faces frontally or diagonally. Transport system ( 1 ) according to one of claims 1 to 4, characterized in that the at least one detector antenna ( 13a ) on the transport cheek ( 12 ) is arranged such that this a lateral edge surface ( 8th ) one in the transport system ( 10 ) arranged printed circuit board ( 1 ) is facing. Transport system ( 10 ) according to claim 6, characterized in that the at least one detector antenna ( 13a ) a detector antenna conductor loop ( 13c ) having an 8-shaped configuration, wherein a node of the detector antenna conductor loop ( 13c ) at the same or substantially the same height as by means of the transport system ( 10 ) transported circuit boards ( 1 ) having. Transport system ( 10 ) according to one of claims 1 to 7, characterized in that the transport cheek ( 12 ) a recess ( 14 ) with a lateral boundary wall ( 15 ) for the printed circuit board ( 1 ), wherein the at least one detector antenna ( 13a ) on the transport cheek ( 12 ) is arranged so that this maximum of 3 mm from a lateral boundary wall ( 15 ) is removed. Transport system ( 10 ) according to one of claims 1 to 8, characterized in that the at least one transport cheek ( 12 ) a shielding device ( 16 ) for shielding one of the detector antenna ( 13a ) generated in at least one of the circuit board ( 1 ) pioneering direction is formed. Manufacturing system ( 20 ) for processing printed circuit boards ( 1 ), comprising a placement machine ( 30 ) for mounting printed circuit boards ( 1 ) with electronic components and a transport system ( 10 ) for transporting printed circuit boards ( 1 ) within the manufacturing system ( 20 ), characterized in that the transport system ( 10 ) is designed according to one of claims 1 to 9.

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