Conveying device for conveying workpieces and method for rotating blanks
By designing a multi-joint mechanism and clamping device, the rotational orientation of the billet is achieved through synchronous or independent drive, which solves the problems of complexity and low efficiency in the existing technology of rotational orientation and realizes fast and accurate billet rotation.
Patent Information
- Application Number
- CN202511122955.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-08-13
- Filing Date
- 2025-08-12
- Publication Date
- 2026-02-13
AI Technical Summary
Existing technologies make it difficult to achieve full-width rotational orientation of the billet by the conveying device without increasing engineering complexity and time consumption.
The design employs a multi-joint mechanism and clamping device, combining a common drive device and an independent drive device to achieve synchronous or independent movement of the clamping device. Through the coordinated or superimposed movement of the clamping device, the billet can be rotated around the vertical axis.
Without increasing complexity and weight, it enables rapid and precise rotational orientation of billets, adapting to billets of different sizes and shapes, thereby improving production efficiency.
Smart Images
Figure CN121516552A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a conveying device for conveying workpieces as described herein and a method for rotating a blank using the conveying device described herein. Background Technology
[0002] DE 195 21 976A1 discloses a conveying system for transporting workpieces through processing stages of a press, a press production line, etc., in which multi-axis conveying of parts can be performed in the longitudinal direction of the press, the direction perpendicular to the longitudinal axis of the press, and the transverse direction. In order to enable the workpiece to move from one processing station to the next processing station, the conveying device has additional pivoting devices in the longitudinal and / or transverse directions. Summary of the Invention
[0003] The purpose of this invention is to provide a conveying device and a method by which a billet extending across the full width of the conveying device can be rotated around a vertical axis in a short time without requiring significant engineering complexity.
[0004] This objective is achieved by starting with the features described herein and through the characterization features described herein. Beneficial and advantageous developments are specifically described in the dependent claims.
[0005] A conveying device according to the invention is configured for conveying blanks in a production line in a conveying direction, for example, conveying blanks to or from one station, or between stations, or within one station, wherein at least one station of the production line is particularly designed as a processing station and preferably a forming machine, wherein the conveying device comprises: a support, a multi-joint mechanism designed as, for example, an articulated arm, a cantilever, a cantilever drive, a carriage, a carriage drive, a left clamping device, and a right clamping device, wherein the multi-joint mechanism is disposed between the support and the cantilever, wherein the cantilever is movable relative to the multi-joint mechanism by a cantilever drive, wherein the left clamping device and the right clamping device are movable together with the carriage on the cantilever, wherein the left clamping device and / or the right clamping device are movable relative to the carriage along the cantilever. Movement can be performed such that the clamping devices can be interchanged relative to each other after movement. Due to this additional mobility provided for one or both clamping devices, an additional function can be implemented in a technically simple manner, allowing the blank held by the two clamping devices to rotate about a vertical axis.
[0006] The left clamping device can also be configured with a left cross arm and a left clamping tool, specifically equipped with a left rotary drive and / or a left pivot drive and / or a left lateral travel drive; the right clamping device can be configured with a right cross arm and a right clamping tool, specifically equipped with a right rotary drive and / or a right pivot drive and / or a right lateral travel drive. Therefore, the orientation of the billet can be influenced to a greater extent.
[0007] To achieve synchronous, reverse movement via a common drive mechanism, the left clamping device can be equipped with a left longitudinal travel mechanism, and the right clamping device with a right longitudinal travel mechanism. The conveying device includes a common drive mechanism by which the left and right clamping devices can move in opposite directions on the carriage. Therefore, a single drive mechanism is sufficient to perform the required functions of both clamping devices, particularly the rotation of the billet around a vertical axis.
[0008] To achieve independent movement of the left and right drive units, the left clamping device can be equipped with a left longitudinal travel mechanism, and the right clamping device with a right longitudinal travel mechanism. The left longitudinal travel mechanism is formed by the left drive unit, and the right longitudinal travel mechanism is formed by the right drive unit. Through the left and right drive units, the left and right clamping devices move independently of each other on the carriage. Therefore, if necessary, the same drive unit can be used to superimpose the travel movement in the conveying direction or the opposite direction on the rotational movement of the billet around the vertical axis. Since the same drive unit is involved, this can be easily implemented in terms of control.
[0009] Alternatively, only one of the two clamping devices can be equipped with a longitudinal travel mechanism and a drive unit, through which only one of the two clamping devices can move on the carriage. This makes the conveying device less complex in structure and lighter in weight.
[0010] Furthermore, mobility of the left clamping device relative to the carriage by 30 cm and / or mobility of the right clamping device can be provided, wherein this mobility is oriented in the conveying direction or in the opposite direction. Therefore, for the rotation of the billet about the vertical axis, a sufficient rotation angle can be achieved to correct any orientation errors that occur in practice.
[0011] The billet can also be configured to have a width of at least 2m, and particularly at least 3m, measured laterally in the conveying direction. Billets of this width can be handled by the conveying device without any problems.
[0012] The method according to the invention, which involves rotating a blank about a vertical axis oriented laterally in the transport direction using a transport device as described herein, comprises the following steps:
[0013] - The billet is clamped (suctioned) by the left clamping device and by the right clamping device;
[0014] - Move one of the two clamping devices along the transport direction so that the billet rotates about the vertical axis;
[0015] -Or move the two clamping devices in opposite directions so that the billet rotates about the vertical axis.
[0016] - Place the reoriented billet.
[0017] Using this method, the blank held by two clamping devices can be rotated around the vertical axis in a short time.
[0018] You can also set
[0019] - Compensating movement performed by rotational drive of the left clamping device and / or rotational drive of the right clamping device, wherein this specifically occurs, such that the compensating movement is performed actively or passively, and / or
[0020] - Superimposed movement performed by the lateral travel drive of the left clamping device and / or the lateral travel drive of the right clamping device.
[0021] Therefore, even large rotation angles can be achieved without generating stress in the conveying device or the billet being processed, and the billet can be oriented as required in a short time by moving the stack.
[0022] Finally, if only one of the two clamping devices is movable relative to the carriage, the carriage and / or cantilever can be configured to move additionally in the opposite direction to the movable clamping device to compensate for longitudinal displacement caused by the rotation of the billet about the vertical axis. This superposition of movements reduces the time required to perform a work step. Attached Figure Description
[0023] Further details of the invention are described using exemplary embodiments illustrated in the accompanying drawings.
[0024] In the attached image:
[0025] Figure 1 A portion of the production line is shown, with a first variation of the conveying device according to the invention operating on the production line;
[0026] Figure 2 Shown in a magnified manner Figure 1 Details of the transmission device shown;
[0027] Figure 3 It shows Figure 1 and Figure 2 Top view of the conveying device shown;
[0028] Figure 4 Shown in a magnified manner Figure 3 Details of the transmission device shown;
[0029] Figure 5 It shows Figures 1 to 4The top view of the conveying device shown shows that the left clamping device moves relative to the carriage in the conveying direction, and the right clamping device moves relative to the carriage in the conveying direction, thereby rotating and orienting the clamped blank from its actual position to the target position.
[0030] Figure 6 With Figure 3 and Figure 5 A similar representation illustrates a second variation of the transmission device according to the invention;
[0031] Figure 7 Shown in enlarged form Figure 6 Details of the transmission device shown; and
[0032] Figure 8 With Figure 3 , Figure 5 and Figure 6 A similar representation shows a third variation of the transmission device according to the invention. Detailed Implementation
[0033] Figure 1 A portion of production line 1 is shown in a schematic side view, on which a first variant of the conveying device 101 according to the invention operates. Figures 2 to 5 The first variation is also shown. In addition to the conveyor 101, Figure 1 Only one station 2 of production line 1 is shown, which is represented by upper mold 3 and lower mold 4.
[0034] In the conveying direction T, which can also be referred to as the channel direction, there can be at least one other station after station 2, where further processing can be performed, for example. Figure 1 The blank P shown. For example, station 2, which is designed as processing station 5, may previously have a station that can be designed as, for example, a supply station.
[0035] exist Figure 1 In the process, the blank P is held by the conveying device 101 and placed in the lower die 4. Here, the blank P, which is rectangular when viewed from above, is oriented such that its right long side PLR and left long side PLL are slightly inclined to the conveying direction T when viewed from above (see...). Figure 3 The orientation error still needs to be corrected before the blank P is placed into the lower mold 4. Figure 3 The dashed line in the diagram indicates the correct orientation required for billet P. To achieve the correct orientation, billet 2 must be rotated 3° clockwise around its vertical axis PH and its center point PM.
[0036] A conveyor 101 is provided for handling workpieces W formed from blanks P in station 2. Station 2 is designed as a processing station 5, specifically in the form of a forming machine 6.
[0037] The conveying device 101 includes a fixed bracket 102, a multi-joint mechanism 103 designed as an articulated arm 104, a cantilever 105, a cantilever drive 106 formed on the articulated arm 104, a carriage 109, a carriage drive 110, a left clamping device 107, and a right clamping device 108.
[0038] A multi-joint mechanism 103 is disposed between the support 102 and the cantilever 105. The cantilever 105 is movable relative to the articulated arm 104 via a cantilever drive 106.
[0039] The left clamping device 107 and the right clamping device 108 are movable together with the slide 109 on the cantilever 105 along the longitudinal range of the cantilever 105.
[0040] The carriage 110 moves relative to the cantilever 105 along a longitudinal range between a first rear end position E110-1 and a second front end position E110-2, and the carriage 110 can take this longitudinal range relative to the cantilever 105.
[0041] The left clamping device 107 and the right clamping device 108 are movable along the transport direction T, and therefore also movable forward in the x direction and backward in the x' direction relative to the carriage 110 within the longitudinal range of the cantilever 105. After movement, the two clamping devices 107, 108 are oriented such that, when viewed from above and in the transport direction, they are displaced relative to each other or are positioned opposite each other at their center.
[0042] The left clamping device 107 includes a left horizontal arm 111, a left clamping tool 112, a left rotation drive 113, a left pivot drive 114, and a left lateral travel drive 115 (see in particular). Figure 2 and Figure 3 ).
[0043] By means of the left rotation drive 113, the clamping tool 112 can rotate left or right relative to the left horizontal arm 111 about the vertical axis H113 (see in particular). Figure 2 ).
[0044] Driven by the left pivot 114, the outer component 111a of the left cross arm 111 is rotatable about the pivot axis S114, which is horizontally located in space and oriented laterally in the transmission direction T, causing the left clamping tool 112 to pivot accordingly (see in particular). Figure 3 ).
[0045] By means of the lateral travel drive 115 positioned between the left cross arm 111 and the left gripping tool 112, the left gripping tool 112 can move to the left in the y' direction and to the right in the y' direction along the lateral direction of the transmission direction T along the cross arm 111 (see in particular). Figure 2 and Figure 3 ).
[0046] By way of example, the left clamping tool 112 is additionally shown with dashed lines, which are located both at position S112-1, which is rotated to the left about the vertical axis H113, and at position S112-2, which is moved to the right in the y-direction (see in particular). Figure 3 ).
[0047] The right gripping device 108 is designed to be similar to the left gripping device 107. The right gripping device 108 includes a right transverse arm 121, a right gripping tool 122, a right rotation drive 123, a right pivot drive 124, and a right lateral travel drive 125 (see specifically...). Figure 2 and Figure 3 ).
[0048] By rotating the right drive 123, the right clamping tool 122 can rotate left or right relative to the left horizontal arm 121 about the vertical axis H123 (see in detail). Figure 2 ).
[0049] Driven by the right pivot 124, the outer component 121a of the right cross arm 121 is rotatable about the pivot axis S124, which is horizontally located in space and oriented laterally in the transmission direction T, causing the right clamping tool 122 to pivot accordingly (see in particular). Figure 3 ).
[0050] By means of the lateral travel drive 125 positioned between the right cross arm 121 and the right gripping tool 122, the right gripping tool 122 is movable to the left in the y' direction and to the right in the y' direction along the transverse direction T of the cross arm 121 (see in particular). Figure 2 and Figure 3 ).
[0051] By way of example, the right clamping tool 122 is additionally shown with dashed lines, which are located both at position S122-1, rotated to the left about the vertical axis H123, and at position S122-2, moved to the left in the y' direction (see in particular). Figure 3 ).
[0052] The left clamping device 107 is guided in the left guide 116, whose cross arm 111 is displaceable on the carriage 109, thus forming a longitudinal traveling mechanism 117. This results in displacement along the transport direction T, forward in the x-direction and backward in the x'-direction (see in particular). Figure 3 ).
[0053] The right clamping device 108 is guided in the right guide 126, and its cross arm 121 is also displaceable on the carriage 109, thus forming a longitudinal traveling mechanism 127. This results in displacement along the same transport direction T, forward in the x direction and backward in the x' direction (see in particular). Figures 1 to 3 ).
[0054] The conveying device 101 includes a common drive unit 131 for the left clamping device 107 and the right clamping device 108 (see in particular). Figure 2 and Figure 4 The drive unit 131 includes a toothed belt 132, four tension pulleys 133, 134, 135 and 136, a drive pinion 137 and an electric motor 138.
[0055] Tensioners 133, 134, 135, and 136 are rotatably positioned below the carriage 109, allowing the toothed belt 132 to circulate around them. The toothed belt 132 is driven clockwise or counterclockwise by a drive pinion 137, which guides the belt. The drive pinion 137 is driven by a motor 138, which is fixed to the carriage 109.
[0056] The left clamping device 107 is connected to the toothed belt 132 via its left cross arm 111, and the right clamping device 108 is connected to the toothed belt 132 via its right cross arm 121. Accordingly, when the toothed belt 132 is running clockwise in the top view of the conveyor 101, the right clamping device 108 moves in the x' direction opposite to the conveying direction T, while the left clamping device 107 moves in the x direction in the conveying direction T (see...). Figure 4 Therefore, the clamping devices 107 and 108 move in opposite directions. When the toothed belt 132 runs counterclockwise in the top view of the conveyor 101, the left clamping device 107 moves in the x' direction and the right clamping device 108 moves in the x direction.
[0057] Then Figure 3 As can be seen, the orientation error of the billet P held by the left clamping tool 112 and the right clamping tool 122 can be corrected by operating the drive device 131 clockwise until the left cross arm 111 and the right cross arm 121 are positioned directly opposite the carriage 109. Figure 5 As shown. Here, the left clamping tool 112 and the right clamping tool 122 are positioned relative to the center point PM of the billet P, such that the billet is rotated around its center point PM by the traveling movement of the left clamping device 107 in the x direction and the traveling movement of the right clamping device 108 in the x' direction.
[0058] In principle, for all variations, "clamping the billet" refers to all possibilities applicable to clamping the billet, whether done by attraction, magnetism, or clamping. In the variations described, vacuum clamps can be used primarily.
[0059] Figure 6 and Figure 7A second variation of the transmission device 201 according to the invention is shown, wherein... Figure 6 and Figure 7 Similar to Figure 3 and Figure 5 The designation is as follows. In principle, refer to the description of the first variation above. In each case, the corresponding reference numerals are increased by 100. The second variation differs from the first variation only in that it uses two drive units 231a, 231b instead of just one. The conveying device 201 includes a first drive unit 231a for the left clamping device 207 and a second drive unit 231b for the right clamping device 208.
[0060] The left clamping device 207 is guided in the left guide 216, and its cross arm 211 is displaceable on the carriage 209, thereby forming a longitudinal traveling mechanism 217. This results in displacement along the transport direction T, forward in the x direction and backward in the x' direction.
[0061] The right clamping device 208 is guided in the right guide 226, and its cross arm 221 is also displaceable on the carriage 209, thus forming a longitudinal traveling mechanism 227. This also results in displacement along the conveying direction T, forward in the x direction and backward in the x' direction.
[0062] The left drive unit 231a includes a toothed belt 232a, two tension pulleys 233a and 234a, a drive pinion 237a, and an electric motor 238a.
[0063] Tensioning pulleys 233a and 234a are rotatably positioned below the carriage 209 relative to the carriage 209, such that when the drive pinion 237a rotates clockwise or counterclockwise, the toothed belt 232a circulates around the two tensioning pulleys 233a and 234a and the drive pinion 237a. The drive pinion 237a is driven by a motor 238a, which is fixed to the carriage 209. Accordingly, the left clamping device 207 can move independently of the right clamping device 208 relative to the carriage 209.
[0064] The right drive unit 231b includes a toothed belt 232b, two tension pulleys 233b and 234b, a drive pinion 237a, and an electric motor 238b.
[0065] Tensioning pulleys 233b and 234b are rotatably positioned below the carriage 209 relative to the carriage 209, such that when the drive pinion 237b rotates clockwise or counterclockwise, the toothed belt 232b rotates around the two tensioning pulleys 233b and 234b and the drive pinion 237b. The drive pinion 23ba is driven by a motor 238b, which is fixed to the carriage 209. Accordingly, the right clamping device 208 can move independently of the left clamping device 207 relative to the carriage 209.
[0066] Since the left clamping device 207 and the right clamping device 208 can move independently of each other in the x direction or x' direction, the blank (not shown here) can be rotated not only by the two drive devices 231a and 231b individually, but also moved in the conveying direction or in the opposite direction by superimposed movement, so that, for example, further desired orientation of the blank on the lower die can occur.
[0067] The carriage 209 is movable on the boom 205, as described with reference to the first variant.
[0068] Figure 8 A third variation of the transmission device 301 according to the present invention is shown, wherein... Figure 8 Similar to Figure 3 and Figure 6 The representation is as follows. In principle, refer to the descriptions of the first and second variations described above. Corresponding reference numerals are increased by 100 or 200 in each case. The third variation differs from the first variation in that only the left clamping device 307 is driven by the drive device 331a, while the right clamping device 308 is fixedly connected to the carriage 309. The third variation differs from the second variation in that it has a similar structure, but this similarity applies only to the attachment of the left clamping device 307 to the carriage 309, and provides a rigid attachment for the right clamping device 308 to the carriage 309.
[0069] The left clamping device 307 is guided on the left guide 316, and its cross arm 311 is displaceable on the carriage 309, thereby forming a longitudinal traveling mechanism 317. This results in displacement along the transmission direction T, forward in the x direction and backward in the x' direction.
[0070] The left drive unit 331a includes a toothed belt 332a, two tension pulleys 333a and 334a, a drive pinion 337a, and an electric motor 338a.
[0071] Tensioners 333a and 334a are rotatably positioned below the carriage 309 relative to the carriage 309, such that when the drive pinion 337a rotates clockwise or counterclockwise, the toothed belt 332a circulates around the two tensioners 333a and 334a and the drive pinion 337a. The drive pinion 337a is driven by a motor 338a, which is fixed to the carriage 309. Accordingly, the left clamping device 307 can move independently of the right clamping device 308 relative to the carriage 309.
[0072] For example, to use conveyor 301 to... Figure 3The blank shown is brought in with the required orientation and position; linear displacement occurring only on one side of the blank's center point is insufficient. However, when using the conveyor 301, this can be achieved by the movement of the carriage 309 on the boom 305, which superimposed on or before the movement of the left clamping device 307 on the carriage 309.
[0073] List of reference numerals in the attached diagram:
[0074] 1 Production Line
[0075] Workstation 2501
[0076] 3 upper mold
[0077] 4. Lower mold
[0078] 5 processing stations
[0079] 6 Molding Machine
[0080] The first rear end position of the carriage on E110-1 105
[0081] The second front end position of the carriage on E110-2 105
[0082] H113 Vertical axis (left rotation drive 113)
[0083] H123 Vertical axis (right rotation drive 123)
[0084] P billet
[0085] PM billet center point
[0086] vertical axis of PHP
[0087] The left long side of the PLL billet
[0088] The right long side of the PLR billet
[0089] S114 Pivot axis (left pivot drive 114)
[0090] S124 Pivot axis (Right pivot drive 124)
[0091] T conveying direction
[0092] W workpiece
[0093] x-direction (forward relative to the conveying direction T)
[0094] x' direction (rearward relative to the conveying direction T)
[0095] y' direction (to the left in the transverse direction T of the conveying direction)
[0096] Y-direction (to the right in the transverse direction of the conveying direction T)
[0097] 101 Conveying Device (First Variant)
[0098] 102 bracket
[0099] 103 Multi-joint mechanism
[0100] 104 articulated arm
[0101] 105 Cantilever (movable on an articulated arm)
[0102] 106 Cantilever Drive (Sliding Cantilever)
[0103] 107 Left clamping device
[0104] 108 Right clamping device
[0105] 109 Carriage (movable on the cantilever)
[0106] 110 Carriage Drive (Moving Carriage)
[0107] 111 Left wishbone
[0108] 112 Left clamping tool
[0109] 113 Left Rotation Drive
[0110] 114 Left pivot drive
[0111] 115 Left Lateral Travel Drive
[0112] Left guide on 116 109
[0113] 117 Left longitudinal travel mechanism
[0114] 121 Right crossarm
[0115] 122 Right clamping tool
[0116] 123 Right Rotation Drive
[0117] 124 Right Pivot Drive
[0118] 125 Right Lateral Travel Drive
[0119] Right guide on 126 109
[0120] 127 Right longitudinal travel mechanism
[0121] Drive units of 131, 107, and 108
[0122] 132 Toothed Belt
[0123] 133-136 tensioner
[0124] 137 small gear
[0125] 138 Electric Motor
[0126] 201 Conveying Device (Second Variation)
[0127] 205 cantilever
[0128] 207 Left clamping device
[0129] 208 Right Clamping Device
[0130] 209 Carriage
[0131] Left guide on 216 209
[0132] 217 Left longitudinal travel mechanism
[0133] Right guide on 226 209
[0134] 227 Right longitudinal travel mechanism
[0135] Drive unit of 231a 207
[0136] Drive unit of 231b 208
[0137] Toothed belts of 232a and 231a
[0138] Toothed belts of 232b and 231b
[0139] Tensioner pulleys of 233a, 234a, and 231a
[0140] Tensioner pulleys 233b, 234b, and 231b
[0141] 237a 231a pinion
[0142] 237b 231b small gear
[0143] 238a and 231a motors
[0144] 238b and 231b motors
[0145] 301 Conveying Device (Third Variation)
[0146] 305 cantilever
[0147] 307 Left clamping device
[0148] 308 Right Clamping Device
[0149] 309 Carriage
[0150] Left guide on 316 209
[0151] 317 Left longitudinal travel mechanism
[0152] Drive unit of 331a 307
[0153] Toothed belts of 332a and 331a
[0154] Tensioner pulleys of 333a, 334a, and 331a
[0155] 337a 331a pinion
[0156] 338a and 331a motors
Claims
1. A conveying device (101, 201, 301) for conveying a blank (P) in a production line (1), wherein at least one station (2) of the production line (1) is particularly designed as a processing station (5), preferably a forming machine (6), -The transmission device (101, 201, 301) includes a bracket (102), a multi-joint mechanism (103), a cantilever (105), a cantilever drive (106), a carriage (109, 209, 309), a carriage drive (110), a left clamping device (107, 207, 307), and a right clamping device (108, 208, 308). -The multi-joint mechanism (103) is disposed between the bracket (102) and the cantilever (105, 205, 305). - wherein the cantilever (105, 205, 305) is movable relative to the multi-joint mechanism (103) via the cantilever drive (106); -The left clamping device (107, 207, 307) and the right clamping device (108, 208, 308) are movable together with the slide (109, 209, 309) on the cantilever (105, 205, 305). - wherein the left clamping device (107, 207, 307) and / or the right clamping device (108, 208, 308) are movable relative to the slide (109, 209, 309) along the cantilever (105, 205, 305).
2. The conveying device according to claim 1, characterized in that, - The left clamping device (107, 207, 307) includes a left cross arm (111) and a left clamping tool (112), particularly including a left rotation drive (113), and / or a left pivot drive (114), and / or a left lateral travel drive (115); - The right clamping device (108, 208, 308) includes a right cross arm (121) and a right clamping tool (122), and in particular includes a right rotation drive (123), and / or a right pivot drive (124), and / or a right lateral travel drive (125).
3. The transmission device (101) according to at least one of claims 1 to 2, characterized in that, The left clamping device (107) includes a left longitudinal traveling mechanism (117), and the right clamping device (108) includes a right longitudinal traveling mechanism (127); wherein the conveying device (101) includes a common drive device (131), through which the left clamping device (107) and the right clamping device (108) are movable in opposite directions on the carriage (109).
4. The transmission device (201) according to at least one of claims 1 to 2, characterized in that, The left clamping device (207) includes a left longitudinal traveling mechanism (217), and the right clamping device (208) includes a right longitudinal traveling mechanism (227). The left longitudinal traveling mechanism (217) is formed by a left drive device (231a), and the right longitudinal traveling mechanism (227) is formed by a right drive device (231b). The left clamping device (207) and the right clamping device (208) are independently movable on the carriage (209) by means of the left drive device (231a) and the right drive device (231b).
5. The conveying device (301) according to at least one of claims 1 to 2, characterized in that, Only one of the two clamping devices (307) includes a longitudinal traveling mechanism (317) and a drive device (331a), such that only one of the two clamping devices (307) is movable on the carriage (309).
6. The conveying device according to at least one of the preceding claims, characterized in that, The left clamping device (107, 207, 307) and / or the right clamping device (108, 208, 308) are movable 30 cm relative to the slide (109, 209, 309).
7. The transmission apparatus according to at least one of the preceding claims, characterized in that, The blank (P) has a width of at least 2m, particularly at least 3m, measured in the transverse direction of the conveying direction (T).
8. A method for rotating a billet (P) by means of a conveying device (101, 201, 301) according to at least one of claims 1 to 7 about a vertical axis (PH) oriented transversely in the conveying direction (T) comprises the following steps: The blank (P) is clamped by the left clamping device (107, 207, 307) and the right clamping device (108, 208, 308). - Move one of the two clamping devices (107, 108; 207, 208; 307, 308) along the conveying direction (T) so that the billet (P) rotates about the vertical axis (PH); -Or move the two clamping devices (107, 108; 207, 208; 307, 308) in opposite directions (x, x') so that the billet (P) rotates about the vertical axis (PH). - Place the reoriented billet (P).
9. The method according to claim 8, characterized in that, During the rotation of the blank (P), - Compensating movement is performed by rotational drive of the left clamping device and / or by rotational drive of the right clamping device, wherein this specifically occurs such that the compensating movement is performed actively or passively, and / or - Superimposed movement is performed by the lateral travel drive of the left clamping device / the lateral travel drive and / or by the lateral travel drive of the right clamping device / the lateral travel drive.
10. The method according to claim 8 and / or 9, characterized in that, If only one of the two clamping devices is movable relative to the carriage, the carriage and / or the cantilever additionally moves in the opposite direction to the movable clamping device to compensate for longitudinal displacement caused by the rotation of the billet about the vertical axis.
Citation Information
Patent Citations
Transport system for workpieces
DE19521976A1