Conveying device for conveying workpieces and production line

Abstract

The invention relates to a conveying device and a production line for conveying workpieces (1) for conveying workpieces (W1) into or out of stations (2) of a production line (F) or between stations (2), at least some of the stations (2) being designed in particular as processing stations (2a), the conveying device (1) comprising a carrier (10) and an articulated arm (11).

Description

Technical Field

[0001] The present invention relates to a conveying device and a production line for conveying workpieces. Background Art

[0002] A conveying system for conveying workpieces past stations of a forming machine is known from DE 195 21 976 A1. The conveying system has at least one transfer device which receives the workpieces and conveys the workpieces in accordance with the rhythm of the forming machine. The transfer device picks up the workpieces from a processing table and conveys the workpieces to subsequent stations in a lifting movement and a longitudinal movement. The transfer device is designed as a feed mechanism for performing a multi-axis workpiece conveying movement, and the feed mechanism is designed as a telescopic feeder which has a conveying device designed as a multi-telescopic slideway. Summary of the Invention

[0003] The object of the present invention is to provide a conveying device for conveying workpieces and a production line which are simply and inexpensively constructed and have a high degree of flexibility for the conveyance of workpieces. Therefore, they are particularly suitable not only for conveying workpieces between stations, but also for receiving and discharging workpieces optimally at the end and the start of the production line.

[0004] This object is achieved by the features of the following solutions. Advantageous and beneficial further improvements are respectively given in the following solutions.

[0005] In the conveying device according to the invention, for conveying a workpiece into or out of a station of a production line or for conveying between stations, it is provided that at least some of the stations are designed in particular as processing stations and preferably as forming machines, wherein the conveying device comprises a carrier and articulated arms, wherein the articulated arm comprises a first lever arm and a first pivoting drive, wherein the articulated arm comprises a second lever arm and a second pivoting drive, wherein the articulated arm comprises a carriage and a carriage drive, wherein the articulated arm comprises at least one clamping device, wherein the first lever arm is rotatably articulated on the carrier about a first axis of rotation and can be rotated relative to the carrier about the first axis of rotation by the first pivoting drive, wherein the second lever arm is rotatably articulated on the first lever arm about a second axis of rotation and can be rotated relative to the first lever arm about the second axis of rotation by the second pivoting drive, wherein the carriage is fixed to the second lever arm in a linearly movable manner and can be moved relative to the second lever arm by the carriage drive, wherein the clamping device is fixed to the carriage in a linearly movable manner, wherein the articulated arm comprises a linear drive, and wherein the distance between the first axis of rotation and the second axis of rotation can be changed by the linear drive. By designing the conveying device in this way, the clamping device can be pivoted and moved in a plane that is vertically in space by two rotary drives and a linear drive that can change their distance, and the direction of travel is also in this plane. Additionally, the carriage can still move within this plane, and the clamping device can also move relative to the carriage within this plane. This gives the conveying device a high degree of mobility in the mentioned plane, such that for transporting the workpiece held by the clamping device, there are a large number of options for the course of the transport path, and thus a flexible response can be made to the boundary conditions.

[0006] It can also be provided that the distance between the first axis of rotation and the second axis of rotation is changed by means of the linear drive such that the effective length of the first lever arm between these axes of rotation is shortened or lengthened. The above-mentioned advantages are likewise produced thereby.

[0007] Furthermore, it can be provided that the first lever arm is designed to be telescopic and the linear drive is arranged between a first arm section of the first lever arm connected to the first axis of rotation and a second arm section of the first lever arm connected to the second axis of rotation, or the linear drive is arranged between the first pivoting drive and the first lever arm such that the linear drive can be pivoted by the pivoting drive and the first lever arm can be moved relative to the first pivoting drive by the linear drive. With each of these design variants, the conveying device can be realized technically simply and thus inexpensively.

[0008] It can also be provided that the clamping device is coupled to a carriage drive, wherein the carriage is moved relative to the second lever arm and the clamping device is moved relative to the carriage, wherein the carriage and the clamping device are each moved in the same direction by the carriage drive. As a result, only the carriage drive is required for the desired movement of the carriage and the clamping device, and the weight of a dedicated drive for the clamping device can be correspondingly saved.

[0009] It can also be provided that the clamping device is equipped with its own drive, by which the clamping device can be linearly moved relative to the carriage. This enables the clamping device to travel independently of the movement of the carriage relative to the second lever arm.

[0010] It can also be provided that the clamping device is equipped with a tilting drive, by means of which the clamping tool of the clamping device can be pivoted relative to the carrier about a tilting axis, and / or that the clamping device is equipped with a rotation drive, by means of which the clamping tool of the clamping device can be rotated relative to the carrier about a vertical axis, and / or that at least one clamping device is equipped with a rolling device, by means of which the clamping device can be tilted about a longitudinal axis extending in a vertical plane and in which the direction of travel also lies. If an existing clamping device or multiple existing clamping devices are equipped with at least one of these drives, the conveying device can be used to reorient the workpiece or workpieces in the sense of correcting or reorienting them. The tilting drive and / or the rotation drive and / or the rolling device provide the conveying device with additional degrees of freedom at a low technical cost, allowing the conveying device to be used more flexibly, even for very specific tasks.

[0011] Furthermore, it can be provided that the first rotation axis, the second rotation axis and in particular the tilting axis are oriented parallel to one another and also transversely to the conveying direction. This simplifies the programming of the gripping device.

[0012] The production line according to the invention comprises a conveyor device according to at least one of the aforementioned embodiments, the conveyor device comprising at least two stations, wherein two adjacent stations are designed as processing stations, each with a tool, wherein the conveyor device removes a workpiece from the tool of the first processing station, transports it to the second processing station, and places it into the tool of the second processing station. This results in a production line having a conveyor device that is highly mobile within a plane that is vertical in space and is perpendicularly traversed by the rotation axes of the two lever arms, and wherein the spacing between these rotation axes can be varied within this plane. This allows for a large number of options for the course of the conveyor path for transporting a workpiece gripped by a gripping device, thereby enabling flexible response to boundary conditions.

[0013] In the context of the present invention, a clamping device is to be understood as a device suitable for temporarily holding a workpiece. The clamping can be effected by mechanical envelopment and / or by suction and / or magnetically and / or by all other suitable measures. Description of the Drawings

[0014] Further details of the present invention will be described in the embodiments schematically shown in the drawings.

[0015] Shown here are:

[0016] Figure 1 a schematic view of a first design variant of a conveying device in a basic position;

[0017] Figure 2 when removing the workpiece from the lower tool of the tool at the first station Figure 1 a schematic view of the first conveying device shown;

[0018] Figure 3 when conveying the workpiece removed from the first station by Figure 1 and Figure 2 a known conveying device;

[0019] Figure 4 when loading the workpiece into the lower tool of the tool at the second station from Figures 1 to 3 a known conveying device, wherein the second station follows the first station in the travel direction;

[0020] Figure 5 a schematic view of a second design variant of a conveying device in a basic position;

[0021] Figure 6 when removing the workpiece from the lower tool of the tool at the first station Figure 5 a schematic view of the second conveying device shown. Detailed Description of the Invention

[0022] Figure 1 A schematic view of a first conveying device 1 in a basic position G1 is shown, for example when at rest between a first station 2 and a second station 3, the first conveying device 1 being in this basic position. Here, the first station 2 is designed to include a first processing station 2a with a first tool 4 (see Figure 2 ), and here the second station 3 is designed to include a second processing station 3a with a second tool 5 (see Figure 5 ). The two stations 2, 3 are part of a production line F which can include other stations. The production line F has a travel direction DR. The processing stations 2a, 3a can be designed as molding machines.

[0023] Figure 2Shows how the first conveying device 2 removes the workpiece W1 traveling in the traveling direction DR through the production line F from the lower tool 4b of the tool 4 at the first station 2. The upper tool 4a of the first tool 4 has been moved upward to allow the conveying device 2 to approach the workpiece W1.

[0024] Figure 3 Shows the conveying device 1 after the workpiece W1 has been removed from the first station 2. The conveying device 1 is now again in the known basic position G1, but holds the workpiece W1 to be conveyed to the second station 3.

[0025] Figure 4 Subsequently shows how the conveying device 1 loaded the workpiece W1 into the lower tool 5b of the second tool 5 not long ago. The upper tool 5a of the second tool 5 at the second station 3 is in the upper position so that the conveying device 1 can retract.

[0026] Figures 1 to 4 The first conveying device 1 shown includes a carrier 10 and a hinged arm 11. The carrier 10 is designed as a crossbeam 10a fixed in position between the frame 6 of the first station 2 and the frame 7 of the second station 3.

[0027] The carrier 10 can also be designed as an upright carrier fixed to the floor of the production line. In addition, the carrier can also be designed as a cantilever connected to adjacent processing stations.

[0028] The hinged arm 11 includes a first lever arm 12 and a first pivot drive 13, a second lever arm 14 and a second pivot drive 15, a carriage 16, a carriage drive 17 and a clamping device 18. The first lever arm 12 is rotatably hinged to the carrier 10 about a first rotation axis D12 and is rotatable relative to the carrier 10 about the first rotation axis D12 by means of the first pivot drive 13. The second lever arm 14 is rotatably hinged to the first lever arm 12 about a second rotation axis D14 and is rotatable relative to the first lever arm 12 about the second rotation axis D14 by means of the second pivot drive 15. The carriage 16 is linearly movably fixed to the second lever arm 14 and is movable relative to the second lever arm 14 by means of the carriage drive 17. The clamping device 18 is linearly movably fixed to the carriage 16. The hinged arm 11 includes a linear drive 19, wherein the spacing between the first rotation axis D12 and the second rotation axis D14 can be changed by the linear drive, thereby changing the effective length of the first lever arm 12.

[0029] In Figure 1 the illustration, the rotation axes D12 and D14 have a first spacing a1 from each other. From Figure 2As can be seen, the first spacing a1 is increased to the second spacing a2 so that the articulated arm 11 is placed in position A11. In addition, to reach position A11, the first lever arm 12 is rotated clockwise by nearly 1 / 8 of a turn by the first pivot drive 13, and the second lever arm 14 is rotated counterclockwise by the second pivot drive 15 so that the carriage 16 remains horizontal in space.

[0030] Similarly, the effective length of the first lever arm 12 is extended from a length L1 equal to the first spacing a1 (see Figure 1 ) to a length L2 equal to the second spacing a2 (see Figure 2 ) by means of the linear drive 19, thus increasing the effective spacing of the articulated arm 11.

[0031] The first lever arm 12 is designed as a telescopic arm 20. Accordingly, its linear drive 19 is arranged between a first arm section 12a connected to the first rotation axis D12 and a second arm section 12b connected to the second rotation axis D14.

[0032] The carriage 16 includes an annular toothed belt 21 and two rollers 22, 23. The toothed belt 21 is tensioned by the rollers 22, 23 fixed to the carriage 16. When needed, the left roller 22 can be driven by the carriage drive 17 so that the left roller acts as a drive roller 24 and rotates clockwise or counterclockwise to cause the toothed belt 21 to rotate. As described above, the carriage 16 can be linearly displaced on the second lever arm 14. The toothed belt 21 is connected to the second lever arm 14 by a follower 25. When observing the intermediate position M16 of the carriage 16 shown in Figure 1 , the clockwise moving toothed belt 21 causes the carriage 16 to move leftward in the direction of the arrow x' relative to the second lever arm 14 against the traveling direction DR. In Figure 2 , the carriage 16 is shown in its left end position E16a accordingly. By moving the toothed belt counterclockwise, the carriage 16 moves to its right end position E16b (see Figure 4 ).

[0033] The clamping device 18 arranged on the carriage 16 in a linearly movable manner is also connected to the toothed belt 21 by means of another follower 26 in the same way. When observing the intermediate position M18 of the clamping device 18 shown in Figure 1 , the clockwise wound toothed belt 21 causes the clamping device 18 to move leftward in the direction of the arrow x' relative to the carriage 16 against the traveling direction DR. In Figure 2 , the clamping device 18 is shown in its left end position E18a accordingly. By moving the toothed belt 21 counterclockwise, the clamping device 18 moves to its right end position E18b (see Figure 4 ).

[0034] In the Figure 2In the above-described position A11 shown, the carriage 16 is in its left-end position E16a, and the clamping device 18 is in its left-end position E18a. From Figure 2 and Figure 3 the comparative views, it can be seen how the articulated arm 11 moves from its position A11 ( Figure 2 ) to Figure 3 the position B11 shown, thereby moving the workpiece W1 in the travel direction DR. Here, the workpiece W1 is first lifted from the lower tool 4b by the retraction movement of the telescopic arm 20. Then the telescopic arm 20 further retracts, the telescopic arm 20 pivots counterclockwise about the first rotation axis D12, the second lever arm 14 pivots clockwise about the second rotation axis D14, and the carriage 16 synchronously moves from the left-end position E16a to the intermediate position M16, and the clamping device 18 moves from the left-end position E18a to the intermediate position M18. Here, the carriage drive 17, the pivot drives 13, 15, and the linear drive 19 of the telescopic arm 20 are at least sometimes started simultaneously. Therefore, the movements of the articulated arm 11 are at least sometimes superimposed.

[0035] In a similar manner, the articulated arm 11 then moves from Figure 3 its position B11 shown to Figure 4 its position C11 shown. In Figure 4 the workpiece W1 is shown, which has, for example, been retracted into the second tool 5 but has not yet been lowered into its lower tool 5b. For lowering, the telescopic arm 20 then extends further, wherein the deviation of the movement direction of the telescopic arm 20 from the vertical line can be compensated for by the carriage drive 17, such that the workpiece W1 is lowered only by a vertically downward-pointing movement in the direction of the arrow y'.

[0036] Furthermore, the clamping device 18 of the conveying device 1 includes an inclination drive 42 by means of which the clamping tool 43 of the clamping device 18 can pivot relative to the carriage 16 about the inclination axis K42 (see in particular Figure 3 ).

[0037] The positioning of the clamping device 18 on the carriage 16 is to be understood as an exemplary design. It can also be provided that the clamping device is guided on the carriage by a linear guide such that the clamping device is guided beside rather than below the carriage. Furthermore, it can be provided that the clamping device is designed such that it extends on both sides of the carriage, so that it extends on the left and right sides of the carriage when observed in the travel direction and in a top view of the production line. In this construction, it can also be provided that the clamping device includes a left clamping unit and a right clamping unit, which are guided on both sides and / or below the carriage.

[0038] Furthermore, the conveying device 1 can also include a rolling device 44 having a rolling drive 45 (see Figure 3) The rolling device enables the gripping tool 43 to be tilted right or left about the longitudinal axis L45 in a motor-driven manner, where the longitudinal axis L44 extends in a vertical plane and the travel direction DR is also located in this vertical plane. Thus, the orientation of one or more workpieces can also be affected.

[0039] Figure 5 shows a schematic view of the second conveying device 101 in the basic position G101. Instead of the first conveying device 1 (see Figures 1 to 4 ), the first conveying device is arranged between the first station 2 of the production line F (which is known from Figure 1 ) and the second station 2 (which is known from Figure 1 ).

[0040] Similar to Figure 2 , Figure 6 shows how the second conveying device 101 removes the workpiece W2 passing through the production line F in the travel direction DR from the lower tool 4b of the tool 4 at the first station 2.

[0041] Similar to Figures 1 to 4 the conveying device 1 shown, in the Figure 5 and Figure 6 conveying device 101 shown, the linear drive 119 of the articulated arm 111 rotatably held on the carrier 110 is arranged between the first pivot drive 113 and the first lever arm 112, where the linear drive 119 can be pivoted by the pivot drive 113, and where the first lever arm 112 can be moved relative to the first pivot drive 113 by the linear drive 119. Accordingly, in the conveying device 101, the effective length of the first lever arm 112 can also be changed, for example, increased from the Figure 5 shown length L101 to the Figure 6 shown length L102.

[0042] The articulated arm 111 includes a first lever arm 112 and a first pivot drive 113, a second lever arm 114 and a second pivot drive 115, a carriage 116, a carriage drive 117, and a clamping device 118. The first lever arm 112 is pivotally articulated on the carrier 110 about a first axis of rotation D112 and is rotatable relative to the carrier 110 about the first axis of rotation D112 by means of the first pivot drive 113. The second lever arm 114 is pivotally articulated on the first lever arm 112 about a second axis of rotation D114 and is rotatable relative to the first lever arm 112 about the second axis of rotation D114 by means of the second pivot drive 115. The carriage 116 is fixed to the second lever arm 114 so as to be linearly movable and is movable relative to the second lever arm 114 by means of the carriage drive 117. The clamping device 118 is fixed to the carriage 116 so as to be linearly movable. The articulated arm 111 includes a linear drive 119, wherein the distance between the first axis of rotation D112 and the second axis of rotation D114 can be changed by means of the linear drive 119, thereby changing the effective length of the first lever arm 112.

[0043] Different from the conveying device 1( Figures 1 to 4 ), in the conveying device 101( Figure 5 and Figure 6 ), the clamping device 118 includes its own drive 140. The drive can be designed in such a way that the carriage includes a rack 141 and the drive 114 can roll on the rack by means of a gear (not shown).

[0044] It can also be provided that such a drive for the clamping device is also provided in the Figures 1 to 4 shown conveying device 1.

[0045] Furthermore, the clamping device 118 of the conveying device 101 can include an inclination drive 142 by means of which the clamping tool 143 of the clamping device 118 can pivot relative to the carriage 116 about an inclination axis K142.

[0046] Furthermore, the clamping device 118 can include a rotation drive 144 by means of which the clamping tool 143 of the clamping device 118 can rotate relative to the carriage 116 about a vertical axis H144.

[0047] Such a rotation drive can also be formed on the Figures 1 to 4 shown conveying device 1. Similarly, the rolling drive described for Figures 1 to 4 can also be designed on the Figure 5 and Figure 6 shown conveying device 101.

[0048] List of reference numerals

[0049] 1 First conveying device

[0050] 2 First station

[0051] 2a First processing station

[0052] 3 Second station

[0053] 3a Second processing station

[0054] 4 First tool

[0055] 4a Upper tool of 4

[0056] 4b Lower tool of 4

[0057] 5 First tool

[0058] 5a Upper tool of 5

[0059] 5b Lower tool of 5

[0060] 6 Frame of 2

[0061] 7 Frame of 3

[0062] 10 Carrier

[0063] 10a Cross beam

[0064] 11 Articulated arm

[0065] 12 First lever arm

[0066] 12a First arm section of 12

[0067] 12b Second arm section of 12

[0068] 13 First rotary drive

[0069] 14 Second lever arm

[0070] 15 Second rotary drive

[0071] 16 Bracket

[0072] 17 Bracket drive

[0073] 18 Clamping device

[0074] 19 Linear drive

[0075] 20 Telescopic arm

[0076] 21 Endless toothed belt

[0077] 22, 23 Rollers

[0078] 24 Driving roller

[0079] Follower between 25, 21 and 14

[0080] 42 Tilt drive

[0081] 43 Gripping tool

[0082] 44 Rolling device

[0083] 45 Rolling drive

[0084] 101 Second conveying device

[0085] 110 Carrier

[0086] 111 Articulated arm

[0087] 112 First lever arm

[0088] 113 First rotary drive

[0089] 114 Second lever arm

[0090] 115 Second rotary drive

[0091] 116 Bracket

[0092] 117 Bracket drive

[0093] 118 Gripping device

[0094] 119 Linear drive

[0095] 140 Drive of 118

[0096] 141 Rack

[0097] 142 Tilt drive

[0098] 143 Gripping tool

[0099] 144 Rotary drive

[0100] D12 First rotation axis of 11

[0101] D112 First rotation axis of 111

[0102] D14 Second rotation axis of 11

[0103] D114 Second rotation axis of 111

[0104] H144 Vertical axis of 144

[0105] K42 Tilt axis of 42

[0106] K142 Tilt axis of 142

[0107] L45 Longitudinal axis of 45

[0108] The middle position of M16

[0109] The left end position of E16a

[0110] The right end position of E16b

[0111] The middle position of M18

[0112] The left end position of E18a

[0113] The right end position of E18b

[0114] DR direction

[0115] x' direction

[0116] y' direction

[0117] The basic position of G1

[0118] The first position of A11

[0119] The second position of B11

[0120] The third position of C11

[0121] a1, a2 The spacing between D12 and D14

[0122] L1, L2 The effective length of 12

[0123] L101, L102 The effective length of 112

[0124] F Production line

[0125] W1 The first workpiece

[0126] W2 The second workpiece.

Claims

1. A conveying device (1; 101) for conveying workpieces (W1; W2) into or out of stations (2, 3) of a production line (F) or for conveying between stations (2, 3), wherein, At least some of said stations (2, 3) are specifically designed as processing stations (2a, 3a), and preferably designed as molding machines, - wherein said conveying device (1; 101) comprises a carrier (10; 110) and an articulated arm (11; 111), - wherein said articulated arm (11; 111) comprises a first lever arm (12; 112) and a first pivot drive (13; 113), - wherein said articulated arm (11; 111) comprises a second lever arm (14; 114) and a second pivot drive (15; 115), - wherein said articulated arm (11; 111) comprises a carriage (16; 116) and a carriage drive (17; 117), and - wherein said articulated arm (11; 111) comprises at least one clamping device (18; 118), - wherein said first lever arm (12; 112) is rotatably articulated to said carrier (10; 110) about a first axis of rotation (D12; D112) and is able to rotate relative to said carrier (10; 110) about said first axis of rotation (D12; D112) by means of said first pivot drive (13; 113), - wherein said second lever arm (14; 114) is rotatably articulated to said first lever arm (12; 112) about a second axis of rotation (D14; D114) and is able to rotate relative to said first lever arm (12; 112) about said second axis of rotation (D14; D114) by means of said second pivot drive (15; 115), - wherein said carriage (16; 116) is fixed to said second lever arm (14; 114) in a linearly movable manner and is able to move relative to said second lever arm (14; 114) by means of said carriage drive (17; 117), - wherein said clamping device (18; 118) is fixed to said carriage (16; 116) in a linearly movable manner, - wherein said articulated arm (11; 111) comprises a linear drive (19; 119), and wherein the spacing (a1; a2) between said first axis of rotation (D12; D112) and said second axis of rotation (D14; D114) can be changed by means of said linear drive (19; 119).

2. The conveying device according to claim 1, characterized in that, The spacing (a1; a2) between said first axis of rotation (D12; D112) and said second axis of rotation (D14; D114) is changed by means of said linear drive (19; 119) such that the effective length (L1; L2; L101; L102) of said first lever arm (12; 112) between said axes of rotation (D12; D112; D14; D114) is shortened or lengthened.

3. The conveying device according to at least one of the preceding claims, characterized in that - The first lever arm (12) is designed to be telescopic, and the linear drive (19) is arranged between a first arm section (12a) of the first lever arm (12) connected to the first rotation axis (D12) and a second arm section (12b) of the first lever arm (12) connected to the second rotation axis (D14), or, - The linear drive (119) is arranged between the first pivot drive (113) and the first lever arm (112) such that the linear drive (119) can be pivoted by the pivot drive (113), and the first lever arm (112) can be moved relative to the first pivot drive (113) by the linear drive (119).

4. The conveying device according to at least one of the preceding claims, characterized in that, The clamping device (18) is also coupled to the carriage drive (17), wherein the carriage (16) moves relative to the second lever arm (14), and wherein the clamping device (18) moves relative to the carriage (16), and wherein the carriage and the clamping device move in the same direction (DR; x') along the carriage drive (17) respectively.

5. The conveying device according to at least one of claims 1 to 3, characterized in that The clamping device (118) includes its own drive (140).

6. The conveying device according to at least one of the preceding claims, characterized in that, The clamping device (18; 118) includes an inclination drive (42; 142) by which the clamping tool (43; 143) of the clamping device (18; 118) can be pivoted relative to the carriage (16; 116) about an inclination axis (K42; K142), and / or the clamping device (118) has a rotation drive (144) by which one of the clamping devices (118) / the clamping tool (143) can be rotated relative to the carriage (116) about a vertical axis (H144), and / or, the at least one clamping device (18) includes a rolling device (44) by which one of the clamping devices (18) can be inclined about a longitudinal axis (L45), the longitudinal axis extending in a vertical plane, and the travel direction (DR) also being in the vertical plane.

7. The conveying device according to at least one of the preceding claims, characterized in that, The first rotation axis (D12; D112), the second rotation axis (D14; D114) and in particular the inclination axis (K42; K142) are also oriented parallel to each other and transversely to the conveying direction (DR).

8. A production line (1), comprising: - A conveying device (1; 101) according to at least one of claims 1 to 7, wherein the conveying device includes at least two stations (2; 3), - wherein two adjacent stations (2; 3) are designed as processing stations (2a; 3a) each having a tool (4; 5), - wherein the conveying device (1; 101) picks up a workpiece (W1; W2) from the tool (4) of the first processing station (2a), conveys it to the second processing station (3a), and places it in the tool (5) of the second processing station (3a).

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