DE102017121556A1 - Conveyor for converting pressed parts - Google Patents

Abstract

The invention relates to a conveying apparatus (40, 140, 240) for converting pressed parts (36) between two successive positions in a passage direction (A), comprising a rail (44, 144, 240), an arm (42, 142, 242 ) which is pivotable about a first axis (Z1) perpendicular to the rail (44, 144, 240) and movably suspended along the rail (44, 144, 244) on the rail (44, 144, 240), the arm ( 42, 142, 242) extends radially from the first axis (Z1) and is slidably suspended with respect to the first axis (Z1) in its direction of extension, a tool holder with means (50, 150, 250) for receiving and holding a pressing part (36 ) which is pivotally mounted on the arm (42, 142, 242) about a second axis (Z2) parallel to the first axis (Z1). According to the invention, the arm (42, 142, 242) is telescopic and comprises at least two telescopic members (52, 152, 252, 54, 154, 254) which in the extension direction of the arm (42, 142, 242) ver against each other ver are sliding.

Description

The present invention relates to a conveying device for converting pressed parts between two successive positions in a passage direction, according to the preamble of claim 1.

Such conveyors are used for example in press lines to remove pressed parts from a press and to transfer them to a subsequent press. The available space for this movement is relatively small, so that the conveyor must be designed to save space and during the transfer movement requires only relatively little space between the receiving position and the storage position.

Such a conveyor is for example from the EP 2 516 116 B1 known. This is essentially a further development of a linear robot with additional degrees of freedom. It comprises a pivotable arm which is suspended on a rail which extends in the direction of passage between the receiving position and the storage position of the pressed parts. The arm is pivotally suspended about a first axis perpendicular to the rail and can be moved along the rail. It extends radially from the first axis and can also be displaced with respect to this axis. At its end the arm carries a tool holder, which is equipped with means for receiving and holding a pressing part. This is a so-called "tooling", which is equipped with vacuum cups or the like and is adapted to the respective male pressing part. The tool holder is pivotable about a further, second axis, which is parallel to the first axis, which represents the pivot axis of the arm.

By moving the arm with respect to its pivot axis, the distance between this (first) axis and the pivot axis of the tool holder on the arm (i.e., the second axis) can be changed. As a result, a movement is possible, in which the tool holder between the receiving position and the storage position is guided in a very narrow motion corridor and the transported press part is moved in a stable position in a linear translational movement. The term "stable position" is intended to mean that the pressed part is not rotated during transport but retains its spatial orientation. For this purpose, the arm for receiving the pressing part is first extended into the receiving position, so that it extends approximately in extension of the rail against the passage direction, and takes the pressing part with the aid of the tooling on the tool holder. Subsequently, the received pressing member is moved in the passage direction in which the tool holder is displaced by a sliding movement of the arm with respect to the first axis to this axis, while the first axis itself is moved along the rail and the arm performs a pivotal movement about the first axis , In order to maintain the orientation of the tool holder this must simultaneously perform an opposite pivotal movement about the second axis at the end of the arm. In order to deposit the pressing part, the arm is again displaced with respect to the first axis, that is, the second axis, which represents the pivot axis of the tool holder, moves away from the pivot axis of the arm, and the pressing part can be deposited. In addition to the degrees of freedom described above, the arm can still be raised and lowered along the first axis to allow picking and dropping of the pressed part from or into the presses.

To carry out this sequence of movements, only relatively little space is available between the presses. The problem here is especially that the rear end of the arm, which faces away from the tool holder, performs a sweeping pivotal movement laterally of the movement of the transported pressed pressed section while the tool holder on the pivot axis (the first axis) of the arm and this is simultaneously pivoted. It must always be ensured that the rear end of the arm always maintains a sufficient distance from the static parts of the press, in particular the press stands, which limit the space available for this movement. Due to these limitations, the maximum length of the arm is also limited.

It is therefore an object of the present invention to develop a conveyor of the type mentioned so that during the transfer movement less space is required by the moving parts of the conveyor and this is thus more flexible. In particular, a conveyor should be provided, the arm can be extended to a relatively large length without the risk of collision with the press stands, when the tool holder is moved in the direction of the pivot axis of the arm.

This object is achieved by a conveyor with the features of claim 1.

The conveying device according to the invention comprises a telescopic arm. This has at least two telescopic members, which can be moved in the extension direction of the arm against each other.

This makes it possible to extend or shorten the arm itself and to drive the tool holder at the end of the arm in the direction of the first axis, without the opposite rear end of the arm is necessarily moved by the same distance from the first axis. In the transfer movement described above, the extension and retraction of the arm can take place simultaneously with a displacement thereof along its pivotal axis (the first axis), as is done in conventional conveyors. However, in the conveying apparatus according to the invention, the rear end of the arm is moved away only a relatively small distance from the first axis and consequently performs a pivoting movement in a much smaller space.

The risk of a collision of the rear end of the arm with the press stands or other parts is thereby greatly reduced, and the thus equipped conveyor can be installed in a smaller space, as is the case with conventional conveyors.

The number of telescopic links of the arm can be chosen at will. With the number of links increases the design effort, but can be reduced by the movement of the rear end of the arm space required in this way even further.

According to a preferred embodiment of the present invention, the arm comprises a first telescopic member, which is pivotable about the first axis, and a second telescopic member, which is suspended linearly displaceable on the first telescopic member and carries the tool holder.

Preferably, in this case coupling means are provided for coupling a displacement of the first telescopic member with respect to the first axis with a displacement of the second telescopic member with respect to the first telescopic member. For example, this coupling may cause these two shifts to be synchronized. In this case, the second telescoping member is displaced from the first telescoping member by the same distance by which the first telescoping member is displaced with respect to the first axis.

More preferably, the coupling means comprises a tension member which is guided via guide means on the first telescopic member, which are spaced apart in the extension direction of the first telescopic member, wherein the tension member comprises a first strand suspended on the first axis, and a second, opposite thereto Trum, on which the second telescopic member is suspended.

This endless pulling element may in particular be an endless chain or an endless belt. The guide means on the first telescopic member are in this case rollers, wheels or the like, over which the tension member is placed, and may in particular comprise a corresponding drive for the tension member. When driving the tension member, the first telescopic member is moved relative to the tension member and the first axis, while at the same time the second telescopic member, which is suspended on the tension member, is moved in the same direction as the first telescopic member. The tension member thus couples the two telescopic members such that a displacement of the first telescopic member with respect to its first axis inevitably accompanied by a displacement of the two telescopic members against each other.

Further preferably, the arm is slidably movable along the first axis. As a result, raising and lowering of the arm and thus of the pressed part held on the arm can be made possible in a press line.

According to one embodiment of the present invention, the rail extends in the direction of passage.

According to a further embodiment of the invention, the rail extends transversely to the passage direction.

• - einer Schwenkbewegung des Arms um die erste Achse,
• - einer Fahrbewegung des Arms entlang der Schiene,
• - einer Verschiebebewegung des Arms bezüglich der ersten Achse,
• - einer Schwenkbewegung der Werkzeugaufnahme um eine zweite Achse
• - und einer Verschiebebewegung der Teleskopglieder des Arms gegeneinander,

wobei die Steuereinrichtung dazu eingerichtet ist, diese Bewegungen derart zu koordinieren, dass ein an der Werkzeugaufnahme aufgenommenes Pressteil in einer Transportbewegung lagestabil zwischen zwei in Durchlaufrichtung aufeinander folgenden Positionen transportierbar ist. Die Steuereinrichtung kann zusätzlich zu den vorstehend genannten Bewegungen zusätzlich eine Bewegung des Arms entlang seiner Schwenkachse (der ersten Achse) koordinieren.Further preferably, the conveying device comprises a control device for controlling at least the following movements of the conveying device:

• a pivotal movement of the arm about the first axis,
• a movement of the arm along the rail,
• a displacement movement of the arm with respect to the first axis,
• - A pivoting movement of the tool holder about a second axis
• and a sliding movement of the telescopic members of the arm against each other,

wherein the control device is adapted to coordinate these movements in such a way that a pressing part received on the tool holder can be transported in a storage movement in a positionally stable manner between two successive positions in the direction of passage. In addition to the above-mentioned movements, the control device can additionally coordinate a movement of the arm along its pivot axis (the first axis).

Further preferably, this control device is adapted to the movements of To coordinate conveyor such that the transport movement is a linear transport movement.

The present invention further relates to a press line, comprising a first press and a second press, which are arranged one behind the other in a passage direction and press stands, between which a movement corridor extends in the direction of passage, and a conveying device of the type described above, between the first Press and the second press for converting pressed parts within the movement corridor between a removal position in the first press and a storage position in the second press is arranged.

• 1 bis 3 zeigen schematische Draufsichten auf eine erste Ausführungsform des erfindungsgemäßen Fördergeräts in verschiedenen Bewegungspositionen;
• 4 und 5 zeigen Seitenansichten als Teilansichten des Fördergeräts aus den 1 bis 3 in verschiedenen Bewegungspositionen;
• 6 und 7 zeigen schematische Draufsichten auf eine zweite Ausführungsform des erfindungsgemäßen Fördergeräts in verschiedenen Bewegungspositionen; und
• 8 und 9 sind schematische Draufsichten auf eine dritte Ausführungsform des erfindungsgemäßen Fördergeräts in verschiedenen Bewegungspositionen.

In the following preferred embodiments of the invention will be explained in more detail with reference to the drawing.

• 1 to 3 show schematic plan views of a first embodiment of the conveyor device according to the invention in different movement positions;
• 4 and 5 show side views as partial views of the conveyor from the 1 to 3 in different movement positions;
• 6 and 7 show schematic plan views of a second embodiment of the conveyor device according to the invention in different movement positions; and
• 8th and 9 are schematic plan views of a third embodiment of the conveyor according to the invention in different movement positions.

1 is a schematic plan view of a press line 10 that a first press 12 and a second press 14 includes. Shown are four press stands each 16 . 18 . 20 . 22 the first press 12 and another four press stands 24 . 26 . 28 . 30 the second press 14 , The respective press stands 16 . 18 . 20 . 22 and 24 . 26 . 28 . 30 between them define a space in which the upper tool and the lower tool of the press 12 . 14 are arranged. Shown in the figures is schematically the lower tool 32 . 34 ,

pressings 36 be in this press line 10 from the first press 12 in the second press 14 transported for further processing. The direction from the first press 12 to the second press 14 is in 1 as horizontal passage direction A indicated by an arrow. For converting the pressed parts 36 from the first press 12 in the second press 14 serves a conveyor 40 , the details of which will be described in more detail below. The conveyor 40 is in an area between the first press 12 and the second press 14 arranged and serves to receive a pressed part 36 from the first press 12 , to transport this pressed part 36 to the second press 14 and for storing the pressed part 36 in the second press 14 , Accordingly, in the present illustration, the lower tool comprises 32 the first press 12 a pickup position and the lower tool 34 the second press 14 a storage position.

The conveyor 40 includes an arm 42 moving on a rail 44 is suspended, which is in the direction of passage A in an area between the presses 12 . 14 extends. The arm 42 is by a suspension 46 like that on the rail 44 hung that he is around a vertical axis Z1 is pivotable. This axis Z1 will be referred to as the first axis in the following. From this first axis Z1 out extends the arm 42 in the radial direction, ie in a horizontal plane. Furthermore, the suspension can 46 together with the arm 42 along the rail 44 be moved, ie in or against the passage direction A , This allows the first axis Z1 to move linearly between the pickup position and the tray position.

The suspension 46 also allows lifting or lowering of the arm 42 in the vertical direction, ie along the Z-axis.

At one end 48 carries the arm 42 a detail not shown in detail Werkaufnahme with means for receiving and holding the pressing part 36 , These funds are also commonly referred to as tooling 50 referred to, which is equipped with vacuum cups or the like, through which the pressed part 36 temporarily on tooling 50 suck in or grab and leave again. The tool holder is together with the tooling 50 around another vertical axis Z2 swiveling, leaving the tooling 50 together with the pressed part held thereon 36 can be pivoted in a horizontal plane. This vertical axis Z2 will be referred to in the following as the second axis. It is parallel to the first axis Z1 ,

Except a sliding movement together with its suspension 46 along the rail 44 can the arm 42 in addition a sliding movement with respect to the suspension 46 and thus the first axis Z1 carry out. That is, the arm 42 can in its extension direction along the first axis Z1 be moved so that the second axis Z2 the first axis Z1 can be approximated or further removed from this.

In addition, the arm 42 telescopic. It comprises for this purpose two telescopic members, namely a first telescopic member 52 that's about the first axis Z1 is hinged and attached to the suspension 46 is suspended, and a second telescopic link 54 at the first telescopic link 52 is suspended linearly displaceable. At its free end carries the second telescopic link 54 the tool holder with the tooling 50 ,

By a displacement of the two telescopic links 52 and 54 against each other can therefore also the second axis Z2 the first axis Z1 be approximated or removed in the opposite direction from this.

In the following a movement sequence is represented, by which a pressing part 36 stable from the in 1 shown recording position in the in 3 shown storage position is transferred. The term "stable position" here means that the pressed part 36 during this transfer movement maintains its position in space and relative to the presses 12 and 14 does not rotate or swivel. Essentially, the movement is a purely translatory movement, except for minor lifting or lowering movements along the first axis Z1 that are necessary to the pressed part from the lower tool 32 completely free and collision free from the first press 12 and remove it from the top into the lower tool on the other side 34 to be able to store the storage position.

In 1 is the suspension 46 to the upstream of the passage direction A located end of the rail 44 drove, and the arm 42 is in a completely opposite to the direction of passage A extended position in which he enters the interior of the first press 12 around the first axis Z1 is pivoted, his first telescopic link 52 relative to the suspension 46 as far as possible towards the first press 12 drove and the second telescopic link 54 maximum with respect to the first telescopic member 52 is extended. The tooling 50 at the tool holder then the pressing part 36 from the recording position 32 grab, if necessary by an additional lowering movement of the recording 46 along the first axis Z1 ,

Subsequently, the recording lifts 46 the pressed part 36 by a lifting movement along the first axis Z1 lightly on, and the pressed part 36 is in the pass direction A from the first press 12 moved out. This is done by retracting the second telescopic member 54 relative to the first telescopic member 52 , causing the arm 42 is shortened, and by a sliding movement of the arm 42 itself, ie a displacement of the first telescopic member 52 regarding the suspension 46 in a direction in which the tooling 50 the first axis Z1 approaches. At the same time the arm becomes 42 clockwise about the first axis Z1 pivoted. So the tooling 50 with the pressed part 36 maintains its stable spatial orientation, performs the tool holder with the tooling 50 an opposite pivotal movement about the second axis Z2 , In addition, the recording 46 along the rail 44 in the conveying direction A emotional.

An intermediate position of the pressed part 36 in which this from the receiving position 32 is taken in is 2 shown. Here is visible, as by the opposing pivotal movements of the arm 42 around the first axis Z1 and the tool holder with the tooling 50 around the second axis Z2 that causes the tooling 50 with the pressed part 36 itself performs no pivoting movement, but by the above-described combined movement exclusively a linear translational movement in the direction of passage A , The method of the first telescopic link 52 in terms of recording 46 and retracting the second telescoping member 54 with respect to the first telescopic link 52 cause the tool holder with the second axis Z2 very far to the first axis Z1 can be approximated.

In 3 is shown a position in which the tooling 50 with the pressed part 36 the storage position 34 has reached and the pressed part 36 in the lower tool of the second press 14 can be stored. The position of the conveyor 40 in 3 is sort of a mirror image of the one from 1 ie, the arm 42 is far in the direction of passage A pivoted and extended to its maximum length and the second telescopic link 54 is at its maximum extended position with respect to the first telescoping member 52 , At the same time, the first telescopic link 52 along the picture 46 as far as possible in the direction of the tooling 50 wearing end 48 of the arm 42 extended, and the recording 46 itself reaches its end position at the leading end in the direction A end of the rail 44 ,

In 3 is also a trajectory 56 shown, which is a rear end facing away from the tool holder 58 of the arm 42 during the transfer movement of 1 to 3 takes place. This trajectory 56 Has the shape of a bow or a loop, which is laterally of the rail 44 extends. This loop is considerably smaller than in a comparable Umsetzbewegung a known in the prior art conveyor in which the arm has a fixed length and approach of the tool holder to the pivot axis of the arm can be achieved only by a method of the arm along the recording. Namely, in this case, the arm has to project the same way that the tool holder is approached to the pivot axis at its opposite end on the other side of the receiving or pivot axis. Due to the Telescoping of the present arm 42 the conveying device according to the invention 40 can be the amount by which the arm 42 at his tooling 50 cantilevered opposite end to be minimized.

The first telescopic link 52 and the second telescopic member 54 can be coupled to each other such that a displacement of the first telescopic member 52 with respect to the first axis Z1 So in terms of suspension 46 of the arm 42 inevitably to a shift of the second telescopic member 54 with respect to the first telescoping member 52 leads. A corresponding structure of a suitable coupling means is in the 4 and 5 described.

4 shows a position of the arm 42 in which the end 48 of the second telescopic member 54 containing the tool holder (not shown here) with the tooling 50 carries, along with the second axis Z2 maximum to the first axis Z1 is approximated to which the first telescopic link 52 or the entire arm 42 at the reception 46 is pivotable. The first telescopic link 52 carries at its opposite ends two rollers 60 and 62 about which an endless band 64 is placed, such that an upper section 66 of the endless belt 64 on the top of the first telescoping member 52 running in the direction of extension and a lower section 68 of the endless belt 64 on the underside of the first telescopic link 52 runs. The term "endless belt" in the sense of the present description also includes a band-shaped traction means, which is not made in one piece, but is formed by a band portion whose ends are connected to form an endlessly continuous belt loop.

The upper section 66 represents a first strand of the endless band 64 at which the suspension is 46 is attached. One of the two roles 60 . 62 is equipped with a drive. When the drive is actuated, the endless belt becomes 64 driven. As a result, a train is exercised, through which the first telescopic member 52 is moved in its extension direction. From the retracted position in 4 out can be the first telescopic link 52 in a position regarding the recording 46 according to 5 be moved by the rollers 60 and 62 to be turned clockwise.

The second telescopic link 54 is by an appropriate suspension 70 at its rear end facing away from the tool holder fixed to the lower portion 68 of the endless belt 64 connected, which forms a lower strand. Through the movement of the endless belt described above 64 from the position in 4 in the position in 5 this lower strand becomes together with the second telescopic member 54 along the first telescopic link 52 moved, and the arm 42 is extended.

The endless band 64 thus couples a displacement movement of the first telescopic member 52 in terms of suspension 46 with a corresponding displacement movement of the second telescopic member 54 relative to the first telescopic member 52 , The second telescopic link 54 is therefore extended by a distance that a displacement of the first telescopic member 52 in terms of suspension 46 equivalent.

Notwithstanding the embodiment shown here, the displacement movement of the first telescopic member 52 in terms of suspension 46 be realized by a differently shaped drive, such as one in the suspension 46 provided motor which drives a rack for displacement via a pinion, extending along the first telescopic member 52 extends. The endless band 64 then does not have its own drive, but only serves to couple this sliding movement with that of the second telescopic member 54 relative to the first telescoping member as described above.

So that the Umsetzbewegung the pressed part 36 can be carried out as a position-stable translational movement, the corresponding members of the conveyor 40 be coordinated and controlled accordingly. For this purpose, the conveying device according to the invention comprises 40 a corresponding control device, the drives for a pivoting movement of the arm 42 around the first axis Z1 , the driving movement of the arm 42 along the rail 44 , the sliding movement of the arm 42 with respect to the first axis Z1 , the pivoting movement of the tool holder about the second axis Z2 and a sliding movement of the telescopic members 52 and 54 of the arm 42 coordinated against each other.

6 is a schematic plan view of the end portion of a press line 100 in which a further embodiment of the conveying device according to the invention 140 for dispensing pressed parts 36 from a press 114 for storing this pressed part 36 is used on one of two parallel conveyor belts. The press 114 is like the press 14 constructed and includes four press stands 124 . 126 . 128 . 130 at their corner areas, between which a lower tool 134 is arranged, in the present case, a receiving area for the pressed part 36 forms. From this recording area is the pressing part 36 taken, transported in the direction of passage A and on a conveyor belt 190 filed, which thus represents a storage area.

The conveyor 140 is similar to the conveyor 40 of the first embodiment and comprises a rail 144 moving in the direction of passage A extends and at which the suspension 146 for the arm 142 in or against the passage direction A slidably suspended. By the suspension 146 the first axis is running Z1 from which the arm emerges 142 extends radially and into which the arm 142 is pivotable. Further, as in the previous embodiment, the arm 142 in relation to the first axis Z1 movable and comprises a first telescopic member 152 and a second telescopic member 154 , which are telescopically connected, as it is in the 4 and 5 is shown. The movement mechanism of the arm 142 in terms of its suspension 146 or the first axis Z1 is thus designed in the same way as in the first embodiment, as well as the additional displaceability along the rail 144 ,

That from the first axis Z1 distant end 148 of the arm 142 carries the tooling 150 for receiving the pressed part 36 , The advantage of a very small swing radius of the rear end 158 of the arm 142 that of the tool holder with the tooling 150 is opposite, is also used in the present second embodiment. However, the pressed part performs 36 during its movement in the direction of passage A from the receiving position to its storage position a rotation. In the present embodiment, it is a 90 ° clockwise rotation, as in FIG 7 is shown. The conveyor 140 is here thus able to cover not only a relatively long distance from the receiving position to the storage position, but also a position correction, including a rotation of the pressing part 36 to perform in a relatively narrow movement corridor whose width is transverse to the direction of passage A in relation to that in the direction of passage A traveled distance is relatively low. The storage position is close to the first axis Z1 arranged. This is inventively again by the shortening of the arm 142 So the approach of tooling 150 to the first axis Z1 allows.

The in 8th illustrated end portion of the press line 200 has an arrangement of a press 214 with press stands 224 . 226 . 228 . 230 and two in the pass direction A subsequent conveyor belts, the 6 equivalent. Again, the pressed part 36 from the lower tool 234 the press 214 removed, rotated and in a storage area on a conveyor belt 290 the two parallel conveyor belts stored, as in 9 shown. The conveyor 240 for converting the pressed part 36 However, it is configured differently than in the first and second embodiments.

Notwithstanding the conveyors 40 . 140 the first and second embodiments, the rail extends 244 along which the arm 242 is movable, namely transverse to the direction of passage A , The recording 246 for the arm 242 through which the first axis Z1 as a pivot axis for the arm 242 runs, thus can be transverse to the direction of passage A move. This also allows a relatively narrow movement corridor for the tooling 250 with the pressed part 36 and a tight trajectory for the rear end 258 of the arm 242 to reach. Will the arm 242 from the shooting position in 8th namely by displacement of the two telescopic links 252 . 254 shortened and by a shift along the first axis Z1 retracted, at the same time recording 246 moved laterally so that the second axis Z2 at least approximately linear in the direction of passage A can be moved. The arm 242 here performs a rotation about the first axis Z1 by a rotation angle that is significantly greater than 90 °, during the resulting rotation angle of the pressed part 36 between the receiving and the storage position is equal to 90 °.

In 9 the storage position is shown, in which the arm 242 fully extended again and the maximum distance between the first axis Z1 and the second axis Z2 is reached.

It is understood that in all three illustrated embodiments of the conveyor 40 . 140 . 240 the movements shown are reversible, ie, the conveyor 40 . 140 . 240 performs on the way from the storage position back to the receiving position the same movement in the reverse order, or in a coupled manner and coordinated by a corresponding control device.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2516116 B1 [0003]

Claims (10)

Conveying apparatus (40, 140, 240) for transferring pressed parts (36) between two successive positions in a passage direction (A), comprising: - a rail (44, 144, 244), - an arm (42, 142, 242) pivotable about a first axis (Z1) perpendicular to the rail (44, 144, 244) and movably suspended along the rail (44, 144, 244) on the rail (44, 144, 244), the arm (42 , 142, 242) extends radially from the first axis (Z1) and is slidably suspended in its direction of extent with respect to the first axis (Z1), - a tool holder with means (50, 150, 250) for receiving and holding a pressing part (36 ) pivotally mounted about a second axis (Z2) parallel to the first axis (Z1) on the arm (42, 142, 242), characterized in that the arm (42, 142, 242) is telescopic and at least two telescopic members (52, 152, 252, 54, 154, 254) which slide against each other in the extending direction of the arm (42, 142, 242) ar are. Conveyor according to Claim 1 characterized in that the arm (42, 142, 242) comprises a first telescoping member (52, 152, 252) pivotable about the first axis (Z1) and a second telescoping member (54, 154, 254) on the first telescopic member (52, 152, 252) is suspended linearly displaceable and carries the tool holder. Conveyor according to Claim 2 characterized by coupling means for coupling a displacement of the first telescoping member (52, 152, 252) with respect to the first axis (Z1) with a displacement of the second telescoping member (54, 154, 254) relative to the first telescoping member (52, 152, 252). Conveyor according to Claim 3 characterized in that the coupling means comprise a pulling member (64) guided by guide means (60, 62) on the first telescoping member (52, 152, 252) spaced from each other in the extending direction of the first telescoping member (52, 152, 252) which traction element (64) comprises a first run (66) which is suspended on the first axis (Z1), and a second, opposite run (68), on which the second telescopic link (54, 154, 254) is suspended. Conveying apparatus according to one of the preceding claims, characterized in that the arm (42, 142, 242) along the first axis (Z1) is displaceably movable. Conveyor according to one of Claims 1 to 5 , characterized in that the rail (44, 144) extends in the direction of passage (A). Conveyor according to one of Claims 1 to 5 , characterized in that the rail (244) extends transversely to the passage direction (A). Conveyor device according to one of the preceding claims, characterized by a control device for controlling at least the following movements of the conveyor (40, 140, 240): - a pivoting movement of the arm (42, 142, 242) about the first axis (Z1), - a travel movement of the arm (42, 142, 242) along the rail (44, 144, 244), - a sliding movement of the arm (42, 142, 242) with respect to the first axis (Z1), - a pivoting movement of the tool holder about a second axis (Z2) - And a sliding movement of the telescopic members (52, 152, 252; 54, 154, 254) of the arm (42, 142, 242) against each other, which control device is adapted to coordinate these movements such that a received on the tool holder pressing part ( 36) in a transport movement position stable between two in the direction of passage (A) successive positions can be transported. Conveyor according to Claim 8 , characterized in that the control device is adapted to coordinate the movements of the conveyor (40, 140, 240) such that the transport movement is a linear transport movement. Press line (10, 100), comprising a first press (12, 112) and a second press (14, 114) arranged one behind the other in a horizontal passage direction (A) and press stands (16, 18, 20, 22; 26, 28, 30), between which a movement corridor extends in the direction of passage (A), and a conveying device (40, 140) according to one of the preceding claims, which is arranged between the first press (12, 112) and the second press ( 14, 114) for converting pressing parts (36) within the movement corridor between a removal position in the first press (12, 112) and a storage position in the second press (14, 114) is arranged.

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