Device and method for conveying flat elements for electrochemical cell manufacturing

Abstract

The present invention relates to an apparatus (1) for conveying a flat element (2) for manufacturing an electrochemical cell. The apparatus (1) includes an input path (3), a first output path (10), and a second output path (20). A first rotating element (40) is provided, which, together with a guide element (23) opposite to the first rotating element (40), provides a conveying clamp for conveying the flat element (2) from the input path (3) to the second output path (20). Furthermore, a second rotating element (50) may be provided, which, together with a guide element (13) opposite to the second rotating element (50), provides a conveying clamp for conveying the flat element (2) from a branch region (5) to the first output path (10). The first rotating element (40) has a first rotating position (41) and a second rotating position (42), in which a first segment (46) of the first rotating element (40) extends into the first output path (10), and in the second rotating position, the first rotating element (40) is completely outside the first output path (10). The present invention also relates to a method for conveying a flat element (2) for manufacturing an electrochemical cell.

Description

Technical Field

[0001] This invention relates to the conveying of flat elements at branch locations. In particular, this invention relates to an apparatus for conveying flat elements for manufacturing electrochemical cells and a method for conveying flat elements for manufacturing electrochemical cells. Background Technology

[0002] Flat elements, such as battery elements, including electrodes and electrode pairs connected in two or more layers, are mechanically sensitive components. The manufacture of electrochemical cells, such as batteries, requires a large quantity of these components with various variations. Accordingly, the production logistics requirements are high when it comes to the efficient, flexible, and safe transport of these flat elements.

[0003] It is known that conveyor switches with mechanically switching switch tongues are used to transfer flat objects into different conveyor paths. These switches can be used to sort individual objects into different conveyor paths.

[0004] However, such conventional transfer switches pose a risk of damage to flat components and are themselves subject to mechanical wear. These transfer switches also require a relatively large minimum clearance between successive transported objects. In such conventional transfer switches, the minimum clearance between transported objects is due, for example, to the fact that the switch finger must move between the transported objects. Depending on the size of the switch finger and its switching speed, the gap between the transported objects must be designed to be sufficiently large. All of these factors impair the efficiency or throughput of the transport process. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to design more efficient conveying of flat elements at branch locations for manufacturing electrochemical cells, particularly battery elements or fuel cell elements.

[0006] This technical problem is addressed by the subject matter of the independent claims. Exemplary embodiments are derived from the dependent claims and the following description.

[0007] According to one aspect, an apparatus is provided for conveying flat elements for manufacturing electrochemical cells, such as battery elements or fuel cell elements. The apparatus includes: an input path having an input guide for conveying the flat element to a branch region; a first output path having a first output guide for conveying the flat element from the branch region along a first direction; and a second output path having a second output guide for conveying the flat element from the branch region along a second direction. The apparatus also includes a first rotating element rotatable about a first rotation axis and designed to provide a conveying clamp for the flat element together with a guide element opposite the first rotating element, particularly a guide element of the second output guide, so as to convey the flat element from the branch region into the second output path. During the rotational movement of the first rotating element about the first rotation axis, the first rotating element has a first rotational position in which a first segment of the first rotating element extends into the first output path, such that the first segment, together with the guide element, particularly the guide element of the second output guide, provides a conveying clamp for the flat element. During the rotational motion of the first rotating element about the first rotation axis, the first rotating element also has a second rotational position in which the first rotating element, in particular the first segment of the first rotating element, is completely outside the first output path.

[0008] Using the device according to the invention, flat elements, such as battery elements or fuel cell elements, can be guided into different output paths or branch paths with a small gap between them or even without gap between them. Rapid switching between two output paths is possible through the rotational movement of the first rotating element between a first rotating position and a second rotating position, and, if necessary, the rotation of the second rotating element, allowing the flat element to be quickly guided into one or the other output path.

[0009] Furthermore, it is advantageous that the rotation of the corresponding rotating element allows the flat element to roll on the outer surface of the section of the corresponding rotating element, and in particular, not to slide along the outer surface of the rotating element, because the section of the corresponding rotating element rotates together with the flat element that is being conveyed.

[0010] The apparatus according to the invention is configured for conveying flat elements. The apparatus according to the invention is for conveying flat elements for manufacturing electrochemical cells. Here, it can be a flat element for manufacturing electrochemical cells, particularly electrochemical energy storage devices, especially batteries, or electrochemical transducers, particularly tertiary batteries, such as fuel cells.

[0011] The term "battery" is generally used as a superordinate concept for primary and secondary batteries. A flat element can be a battery element used to manufacture a primary or secondary battery. For example, a battery element is a single cell, a dual cell, a single electrode such as an anode or cathode, or an anode-separator combination, a cathode-separator combination, or an anode-separator-cathode-separator combination.

[0012] However, flat elements can also be fuel cell elements, such as fuel cell electrodes (fuel cell anodes or fuel cell cathodes) or combinations of fuel cell anodes and / or fuel cell cathodes with other elements (e.g., membranes or plates) or a single fuel cell unit (where multiple fuel cell units are connected to form a fuel cell).

[0013] Flat elements can also be coated and / or arranged on a carrier as battery or fuel cell elements.

[0014] The input path can be an input conveying path along which the flat element is transported into the device, particularly to a branch area. For this purpose, the input path has an input guide designed to transport the flat element to the branch area. The input guide can have conveying devices such as belts, on which the flat element is clamped during transport, thereby ensuring clamping of the flat element during transport in the input path. Similarly, the input guide can have conveying devices such as suction plates, suction belts, and / or roller conveyors. Unlike belt conveyors, suction belts or suction plates operating under negative pressure do not have double-sided clamping.

[0015] The first output path can be a first output conveying path along which the flat element is conveyed from the device, particularly from the branch area. For this purpose, the first output path has a first output guide, designed as a conveying device for conveying the flat element from the branch area along a first direction. The first output guide can also have conveying devices such as belts, in which the flat element is clamped during conveying, thereby ensuring the clamping of the flat element during conveying in the first output path. Similarly, the first output guide can have conveying devices such as suction plates, suction belts, and / or roller conveyors.

[0016] The second output path can be a second output conveying path along which the flat element is conveyed from the device, particularly from the branch area. For this purpose, the second output path has a second output guide device designed as a conveying device for conveying the flat element from the branch area in a second direction. The second output guide device can also have conveying devices such as belts, in which the flat element is clamped during conveying, thereby ensuring the clamping of the flat element during conveying in the second output path. Similarly, the second output guide device can have conveying devices such as suction plates, suction belts, and / or roller conveyors.

[0017] Since the input path is thus divided or branched into first and second output paths, wherein the flat element can be selectively guided from the input path to either the first or second output path, the device according to the invention can also be considered as a transfer switch for the flat element. To selectively switch the transfer of the flat element between the first and second output paths, a movable switch wing is not required. Instead, the selective switching between the transfer of the flat element to the first and second output paths is achieved by selectively manipulating or rotating a first rotating element and, if necessary, a second rotating element. This has the advantage of avoiding relative movement between the flat element and the transfer components of the device, and the resulting friction. Because when transferring through rigid switch wings or stationary components, there is a risk that the sensitive flat element may be damaged. In other words, with the device according to the invention, the flat element can always be clamped on both sides during the process from the input path to the corresponding output path, thereby generating almost no relative movement between the surface of the flat element and the corresponding clamping components, which is particularly gentle on materials.

[0018] Alternatively, the device may also have a movable switch wing in addition to one or more rotating elements. This movable switch wing can assist in "threading" into the correct output path after the rotating element or prevent misguided routing. This can occur when an object bends sharply in the conveying direction and tends to follow the bend behind the clamping point of the rotating element due to the bending.

[0019] The first rotating element includes a first section designed circumferentially such that, for a specific period of time—during the clamping phase—it is opposed to the guide element of the second output guide device, so that the flat element arriving at the branch region can be clamped between the first section of the first rotating element and the guide element of the second output guide device. This transfer clamping between the first section of the first rotating element and the guide element of the second output guide device can then be maintained for the duration of the clamping phase. In this way, the flat element is transferred from the input path to the second output path or is redirected.

[0020] The first rotational position of the first rotating element is characterized in that a first segment of the first rotating element is opposed to the guide element of the second output guide device, thereby causing a transfer clamping. Since the first segment of the first rotating element can extend segmentally along a specific circumferential length of the first rotating element, and the first segment of the first rotating element rotates together with the first rotating element, the transfer clamping can be maintained during the duration of the aforementioned clamping phase. This, in turn, means that multiple first rotational positions of the first rotating element can exist, in which clamping occurs.

[0021] In the first rotational position of the first rotating element, a first segment of the first rotating element extends into the first output path. This can mean that the first segment rotates into and / or extends through the first output path to contact the flat element to be turned and, as described above, together with the guide element of the second output guide device, provide a transfer clamping for the flat element to be turned, which abuts against the guide element of the second output guide device.

[0022] The first rotating element also has a second rotating position in which it is completely outside the first output path. This can mean that the first segment has rotated out of the first output path and therefore no longer extends through it. In the second rotating position of the first rotating element, the flat element can be conveyed from the branch region into the first output path, for example, due to the inertia of the flat element moving along its conveying direction and / or due to the effects of gravity. Conveying the flat element into the first output path can be supported by the second rotating element (which will be described in detail below).

[0023] The first rotating element may have an intermediate section that is adjacent to the first section along the circumference of the first rotating element and faces the branch region in the second rotating position.

[0024] It should be understood that the term "output path" defines a region or path area in which the flat element moves along the corresponding output path during transport. In other words, the corresponding output path can be relatively narrow because it involves a flat element that can be transported longitudinally along the output path. Therefore, the length of the output path can be defined by the thickness of the flat element. A first segment of the first rotating element can extend into the first output path by moving past, for example, a conveying element or guide element of the first output guide device. In other words, the first segment of the first rotating element can be immersed in the first output path, i.e., immersed between the conveying elements or guide elements of the first output guide device.

[0025] A second rotating element can also be used in the same manner. In particular, the first section of this second rotating element can, together with another guiding element opposite to the second rotating element, especially the guiding element of the first output guiding device, provide transfer clamping for the flat element during the clamping phase, so as to transfer the flat element from the input path to the first output path. This will be explained in more detail below.

[0026] According to one embodiment, the device further includes a second rotating element rotatable about a second rotation axis and designed to provide a transfer clamping for the flat element together with another guide element opposite to the second rotating element, particularly the guide element of the first output guide device, so as to transfer the flat element from the branch region into the first output path. During the rotational movement of the second rotating element about the second rotation axis, the second rotating element has a first rotational position in which a first segment of the second rotating element extends into the second output path, such that the first segment of the second rotating element, together with the guide element, particularly the guide element of the first output guide device, provides a transfer clamping for the flat element. During the rotational movement of the second rotating element about the second rotation axis, the second rotating element has a second rotational position in which the second rotating element, particularly the first segment of the second rotating element, is completely outside the second output path.

[0027] During the switching process of transferring the flat element to the first output path or the second output path, the first rotation axis (and the second rotation axis) remain in a fixed position.

[0028] The first section of the second rotating element can be designed circumferentially such that it is opposed to the guide element of the first output guide device for a specific period of time, namely during the clamping phase, so that the flat element arriving at the branch region can be clamped between the first section of the second rotating element and the guide element of the first output guide device. This transfer clamping between the first section of the second rotating element and the guide element of the first output guide device can then be maintained for the duration of the clamping phase. In this way, the flat element is transferred from the input path to the first output path or is redirected.

[0029] Preferably, the clamping phase in which the flat element is clamped between the first section of the first rotating element and the guide element of the second output guide device is time-discretionary to the clamping phase in which the flat element is clamped between the first section of the second rotating element and the guide element of the first output guide device.

[0030] The first rotational position of the second rotating element is characterized in that a first segment of the second rotating element is opposed to the guide element of the first output guide device, thereby causing a transfer clamping. Since the first segment of the second rotating element can extend segmentally along a specific circumferential length of the second rotating element, and the first segment of the second rotating element rotates together with the second rotating element, the transfer clamping can be maintained for the duration of the aforementioned clamping phase. This, in turn, means that multiple first rotational positions of the second rotating element can exist, in which clamping occurs.

[0031] In the first rotational position of the second rotating element, the first segment of the second rotating element extends into the second output path. This can mean that the first segment of the second rotating element rotates into the second output path and / or extends through the second output path to contact the flat element abutting against the guide element of the first output guide device and, as described above, provide a transfer clamping for the flat element together with the guide element of the first output guide device.

[0032] The second rotating element also has a second rotating position in which it is completely outside the second output path. This could mean that the first segment of the second rotating element has rotated out of the second output path and therefore no longer extends through it. The second rotating element may also have an intermediate segment that is adjacent to the first segment of the second rotating element circumferentially and faces the branch region in the second rotating position.

[0033] The first section of the second rotating element can extend into the second output path by moving past, for example, a conveying element or a guiding element of the second output guide device. In other words, the first section of the second rotating element can be immersed in the second output path, i.e., immersed between the conveying elements or guiding elements of the second output guide device.

[0034] The guiding element of the second output guide device and / or another guiding element of the first output guide device may be a belt, especially a flat belt, or a freely rotating roller or a driven roller. Depending on the curvature of the object to be conveyed, a belt may be advantageous when it is necessary to prevent the object from potentially approaching another stationary rotating element (which has been rotated out of the corresponding conveying path).

[0035] The first rotating element and / or the second rotating element can be designed as a plate or a roller. In the operation of the device, the first rotating element and / or the second rotating element can rotate about their respective centers of gravity.

[0036] According to one embodiment, the radius of the first rotating element varies along the circumference of the first rotating element such that a first segment of the first rotating element has a larger radius than the intermediate segment of the first rotating element that is adjacent in the circumference.

[0037] In other words, the first segment of the first rotating element can form a bulge, that is, a segment of the first rotating element that protrudes from the circumferentially adjacent region of the first rotating element.

[0038] Similarly, the radius of the second rotating element can vary along the circumference of the second rotating element such that the first segment of the second rotating element has a larger radius than the adjacent middle segment of the second rotating element in the circumferential direction.

[0039] In this way, by rotating the first or second rotating element by a corresponding rotation angle, it can be achieved that the first segment of the first or second rotating element is opposed to the corresponding guide element of the first or second output guide device only during a specific time period, namely during the clamping phase described above, so as to cause transfer clamping. During other time periods, namely between the clamping phases described above, the segments of the first or second rotating element are not opposed to the corresponding guide elements of the first or second output guide device, so that transfer clamping cannot occur during these other time periods.

[0040] Preferably, the clamping phases of the first section of the first rotating element and the guide element of the second output guide device, which are opposite each other, and the clamping phases of the first section of the second rotating element and the guide element of the first output guide device, are staggered or not performed simultaneously in time.

[0041] According to one embodiment, a first rotating element has a first end and a second end, wherein a first section of the first rotating element is arranged at the first end of the first rotating element, wherein the first rotating element has a blanking region in an angular section between the first end and the second end, the blanking region being designed such that the outer surface of the first rotating element in the angular section between the first end and the second end is radially retracted relative to the outer surface of the first section, particularly by at least 20%, preferably at least 40%.

[0042] This could mean that, along the circumference of the first rotating element, the empty area forms a recess or narrowing portion, which causes the outer periphery of the first rotating element to retract in the angular segment between the first end and the second end of the rotating element, thereby forming protruding segments of the first rotating element at the first end and the second end, respectively. Here, empty areas can be provided in the opposing angular segments between the first end and the second end.

[0043] By utilizing the shape of the first rotating element, collisions with the rear edge of the flat element can be avoided during switching of the rotating element, such as when the first rotating element rotates from a first rotating position to a second rotating position, or when switching between conveying the flat element to a first output path or a second output path. By unscrewing the rotating element from the path and combining it with a retractable shape, it is possible to ensure that the rotating element unscrewed from the path does not contact the flat element at its retracted angular section, and thus avoids (damaging) sliding friction of the flat element on the unscrewed rotating element.

[0044] Furthermore, by having the first end and the opposite second end protrude from the retracted outer surfaces on both sides in the corresponding angular segments relative to the first rotating element, the first rotating element can be provided with a (point) symmetrical shape that avoids imbalance in rotational motion.

[0045] The first end and the second end can be arranged opposite each other relative to the axis of rotation of the first rotating element.

[0046] The shape described for the first rotating element can also be set for the second rotating element, as can also be seen from the accompanying drawings.

[0047] According to one embodiment, the first rotating element has an elongated shape with a first end and a second end, wherein a second section of the first rotating element is disposed at the second end of the first rotating element. The first end and the second end may be arranged opposite each other with respect to the axis of rotation of the first rotating element.

[0048] By means of the first and second ends of the first rotating element, two sections can be provided, which enable the transfer and clamping of the flat element. In particular, the first rotating element can guide the flat element into the corresponding output path twice per revolution, thereby providing a higher flat element throughput, i.e., a higher flat element transfer frequency.

[0049] The first rotating element can be designed as a rectangle or a propeller-like structure. Here, the first section of the first rotating element can have a rounded section surface that can roll on the flat element when the first section of the first rotating element is opposed to the guide element of the second output guide device.

[0050] In one example, the second rotating element also has an elongated shape with a first end and a second end, wherein a first segment of the second rotating element is disposed at the first end of the second rotating element, and a second segment of the second rotating element is disposed at the second end of the second rotating element.

[0051] The second rotating element can be designed as a rectangle or a propeller-like structure. Here, the first section of the second rotating element can have a rounded outer surface that can roll on the flat element when the first section of the second rotating element is opposed to the guide element of the first output guide device.

[0052] According to one embodiment, the first rotating element has a third rotating position in which a second segment of the first rotating element extends into the first output path, such that the second segment of the first rotating element, together with the guide element, particularly the guide element of the second output guide device, provides a transfer clamping for the flat element, wherein the first rotating element has a fourth rotating position in which the first rotating element, particularly the first and second segments of the first rotating element, are completely outside the first output path.

[0053] The first rotating element thus provides two transmission clamping stages with the guide element of the second output guide device with each rotation: on the one hand, when the first section of the first rotating element is opposite to the guide element of the second output guide device, and on the other hand, when the second section of the first rotating element is opposite to the guide element of the second output guide device.

[0054] In one example, the second rotating element also has a third rotating position in which a second segment of the second rotating element extends into the second output path, such that the second segment of the second rotating element, together with other guiding elements, particularly the guiding elements of the first output guiding device, provides a transfer clamping for the flat element, wherein the second rotating element has a fourth rotating position in which the second rotating element, particularly the first and second segments of the second rotating element, are completely outside the second output path.

[0055] The second rotating element thus provides two transmission clamping stages with the guide element of the first output guide device with each rotation: one when the first section of the second rotating element is opposite to the guide element of the first output guide device, and the other when the second section of the second rotating element is opposite to the guide element of the first output guide device.

[0056] According to one example, the first rotating element has a geometry that is symmetrical about a point with respect to a first axis of rotation, and / or the second rotating element has a geometry that is symmetrical about a point with respect to a second axis of rotation.

[0057] The rotating element is thus able to rotate about a corresponding axis of rotation, which is located at the center of the rotating element. It can be specified that the center of gravity of the rotating element is located on the corresponding axis of rotation.

[0058] According to one embodiment, the first rotating element is designed to provide a transfer clamping for the flat element by pressing the outer surface of a first segment of the first rotating element against the first surface of the flat element.

[0059] The flat element is thus pressed against the guide element of the second output guide device with its second surface. The flat element is then clamped between the outer surface of the first section of the first rotating element and the guide element of the second output guide device, and is continued to be conveyed along the second output path during this period.

[0060] In one example, the second rotating element is also designed to provide transfer clamping for the flat element by pressing the outer surface of the first segment of the second rotating element against the first surface of the flat element.

[0061] The flat element is thus pressed against the guide element of the first output guide device with its second surface. The flat element is then clamped between the outer surface of the first section of the second rotating element and the guide element of the first output guide device, and is continued to be conveyed along the first output path during this period.

[0062] According to one embodiment, the device further includes a control unit designed to control the rotational movement of a first rotating element about a first rotation axis and, if necessary, control the rotational movement of a second rotating element about a second rotation axis. For this purpose, the control unit may, for example, correspondingly control the drive mechanism (e.g., a motor) of the first rotating element and, if necessary, the drive mechanism (e.g., a motor) of the second rotating element. The control unit is specifically designed to control the rotational movement of the first rotating element such that the first rotating element rotates about the first rotation axis such that the circumferential velocity of the outer surface of the first segment of the first rotating element is consistent with the conveying speed of the flat element during the delivery clamping.

[0063] In other words, the outer surface of the first segment of the first rotating element rolls on the first surface of the flat element while maintaining the transfer clamp.

[0064] In one example, the second rotating element can also rotate about the second rotation axis such that the circumferential velocity of the outer surface of the first section of the second rotating element is consistent with the conveying speed of the flat element when providing the transfer clamping.

[0065] In other words, the outer surface of the first section of the second rotating element also rolls on the first surface of the flat element while maintaining the transfer clamping.

[0066] The control unit can be designed to initiate a start-stop operation for the rotational movement of the first and / or second rotating elements. For example, the rotation of the first rotating element can be initiated when the delivered flat element has reached a specific position within the device. The rotation of the first rotating element can then continue until the flat element reaches the second output path or until the first rotating element is no longer in contact with the flat element. The rotation of the first rotating element can then be stopped. Similarly, this start-stop operation can also be used for the rotational movement of the second rotating element.

[0067] It can also be specified that the control unit is designed to sequentially feed multiple flat elements into a first output path or sequentially feed multiple flat elements into a second output path. In particular, it can be specified that, at least for a certain period of time, flat elements are not provided to be alternately input into the first and second output paths.

[0068] The control unit can also be designed to set the rotational speed of the first rotating element independently of the rotational speed of the second rotating element, and vice versa. Here, the rotational speeds of the first and second rotating elements can be set differently.

[0069] Using the device according to the invention, it is possible to respond to varying spacing between incoming flat elements. In particular, the different (variing) leading edge spacing between the flat elements can be compensated for by individually and / or time-dependently setting the rotational speeds of the first and second rotating elements, as well as the speeds of the corresponding guide elements in the two output paths. This can also be achieved by a control unit, particularly by targeted control of the speeds of the aforementioned components.

[0070] Using the device according to the invention, even flat elements arriving without any gap between them, i.e., flat elements directly and successively introduced into the branch area, can be transmitted to the corresponding output path.

[0071] According to one embodiment, the first rotating element, in particular controlled by the control unit, rotates such that the outer surface of the first segment of the first rotating element rolls on the first surface of the flat element while maintaining the transfer clamp.

[0072] In one example, the second rotating element, in particular controlled by the control unit, rotates such that the outer surface of the first section of the second rotating element rolls on the second surface of the flat element while maintaining the transfer clamp.

[0073] It can be specified that relative velocity between the rotating element and its corresponding opposing guide element should be avoided. For example, it can be specified that there is no relative motion between the segment of the corresponding rotating element and the opposing guide element when the segment extends into the corresponding output path. This can be achieved through the retracted shape and in such a way that, due to the decoupling of the rotating element (as will be explained in more detail below), the rotation of the segment in the corresponding screw-in path can stop after contact with the corresponding flat element ends and after screwing out, thus preventing contact with other segments of the rotating element that have relative velocity.

[0074] This movement of the individual components within the device can be achieved by the control unit described herein. In particular, the device according to the invention can prevent slippage between the conveyed flat element and the first or second rotating element. Similarly, it can prevent slippage between the conveyed flat element and the corresponding abutting guide element (e.g., a belt).

[0075] According to one embodiment, the control unit is designed to control the rotational movement of the first rotating element based on the current position of the flat element in the input path.

[0076] In one example, the control unit is also designed to control the rotational movement of the second rotating element based on the current position of the flat element in the input path.

[0077] Additionally or alternatively, the control unit may be designed to control the rotational movement of the first rotating element based on the current position of the flat element in the first or second output path. Similarly, the control unit may be designed to control the rotational movement of the second rotating element based on the current position of the flat element in the first or second output path.

[0078] This ensures that when the flat element is to be conveyed into the first or second output path, the first and second rotating elements begin to rotate in a timely manner. Specifically, this ensures that the corresponding conveying clamping of the flat element between the segment and the corresponding opposing guide element can begin promptly. Appropriate sensors, such as photoelectric sensors, can be placed in the input path and / or the first or second output path to identify the position of the flat element, such as the front and / or rear edges, thereby enabling control of the first and / or second rotating elements based on the obtained position information.

[0079] Specifically, the position of the flat element can be determined using one or more sensors, such as photoelectric sensors, located before or at the input path and recording the arrival time of the flat element, such as its leading edge. Based on the arrival time of the flat element at the sensor and the transport speed, the arrival time of the flat element in the branch region or at the first / second rotating element can then be determined, and the rotation of the first / second rotating element can be controlled, for example, accelerated, to bring the corresponding segment into contact with the flat element and achieve the aforementioned transport clamping. Preferably, the rotational movement of the first / second rotating element is controlled such that the transport clamping begins at the front half of the flat element.

[0080] According to one embodiment, a first segment of the first rotating element has a circumferential length in the circumferential direction of the first rotating element, the circumferential length being at least 20% of the length of the flat element. Thus, the first segment provides improved guidance for the flat element along its conveying direction. The first segment of the first rotating element may have the same radius relative to the first axis of rotation over its entire extension.

[0081] In one example, the first segment of the second rotating element also has a circumferential length in the circumferential direction of the second rotating element, which is at least 20% of the length of the flat element, in order to provide improved guidance of the flat element along its conveying direction. The first segment of the second rotating element may have the same radius relative to the second axis of rotation over its entire extension.

[0082] According to one embodiment, the input guide is designed to transfer a flat element to a branch region by means of transfer clamping provided by two opposing guide elements of the input guide, wherein the input guide is designed to maintain the transfer clamping of the flat element in the input guide until transfer clamping for the flat element provided by the first rotating element and the guide element, particularly the guide element of the second output guide, has occurred.

[0083] Additionally or alternatively, the input guide may be designed to maintain the transfer clamping of the flat element in the input guide until the transfer clamping of the flat element provided by the second rotating element and the guide element, particularly the guide element of the first output guide, has occurred.

[0084] This means that the transfer clamping provided in the input path only ends when transfer clamping is provided in the first or second output path to which the flat element should be transported. Therefore, transfer clamping is ensured at all times within the device for the corresponding flat element being transported.

[0085] According to one embodiment, a first section of the first rotating element is offset relative to the guiding element, particularly the guiding element of the first output guiding device, in a direction parallel to the first rotation axis.

[0086] This ensures that the first segment of the first rotating element can move past the guide element of the first output guide device, thereby allowing the first segment of the first rotating element to extend into the first output path. As described above, the transfer clamping of the flat element in the second output path is achieved by clamping the flat element between the first segment of the first rotating element and the guide element of the second output guide device, but wherein the first segment of the first rotating element is first moved through the first output path to reach the guide element of the second output guide device.

[0087] In one example, the first section of the second rotating element is offset relative to the guiding element of the second output guiding device in a direction parallel to the second rotation axis.

[0088] This ensures that the first section of the second rotating element can also move past the guide element of the second output guide device, thereby allowing the first section of the second rotating element to extend into the second output path. As described above, the transfer clamping of the flat element in the first output path is achieved by clamping the flat element between the first section of the second rotating element and the guide element of the first output guide device, but wherein the first section of the second rotating element is first moved through the second output path to reach the guide element of the first output guide device.

[0089] According to one embodiment, the input guiding device has an input conveyor belt device, wherein the first output guiding device has a first output conveyor belt device and the guiding element, in particular the guiding element of the first output guiding device, is a conveyor belt, and wherein the second output guiding device has a second output conveyor belt device and the additional guiding element, in particular the additional guiding element of the second output guiding device, is an additional conveyor belt.

[0090] The conveyor belt of the first output conveyor belt device can be a conveyor belt guided by a roller device. The guiding element of the first output guiding device can also have multiple parallel extending conveyor belts.

[0091] Similarly, the conveyor belt of the second output conveyor belt device can be a conveyor belt guided by a roller device. The guiding element of the second output guiding device can also have multiple parallel extending conveyor belts.

[0092] According to one embodiment, the device further includes a guide element disposed at the branch region, wherein the guide element is disposed adjacent to and following the first output path after the first rotating element. Additionally, the guide element may be disposed adjacent to and following the second output path after the second rotating element.

[0093] The guiding element can be a guiding element that tapers in the opposite direction to the conveying direction of the flat element. For example, it is a guiding element that gradually tapers in the opposite direction to the conveying direction of the flat element.

[0094] A guide element assists the leading edge of the arriving flat element in entering the correct output path. The guide element is, for example, fixedly arranged, i.e., immovably arranged within the device.

[0095] According to one embodiment, the guide element is arranged such that contact between the conveyed flat element and the guide element is prevented when the flat element is conveyed from the branch area into the first output path. Alternatively or additionally, the guide element is arranged such that contact between the conveyed flat element and the guide element is prevented when the flat element is conveyed from the branch area into the second output path.

[0096] Specifically, the device can be configured to avoid contact between the flat element and the guide element. This can be achieved by specifying that the spacing between the corresponding transport path for the flat element and the guide element is so large that such contact is avoided.

[0097] For example, the input path, the first output path, the second output path, the first rotating element and / or the second rotating element may be arranged in the device relative to the guide element such that contact between the respective conveyed flat element and the guide element is prevented.

[0098] However, it can also be specified that the device has no additional guiding elements at all, in particular no additional guiding elements arranged along the first output path after the first rotating element or along the second output path after the second rotating element.

[0099] Advantageously, the device according to the invention enables very few or even no parts to slide in contact with the corresponding flat element being conveyed, thereby protecting the material of the flat element during conveyance. Furthermore, the device according to the invention can have few or no interfering edges, thus ensuring safe and, in particular, undamaged conveyance of the flat element.

[0100] According to one embodiment, the rotational motion of the first rotating element about a first rotation axis is decoupled from the motion of the input guide device, particularly from the motion of the guide element of the input guide device / guide element, which performs the motion to convey the flat element in the input path.

[0101] Alternatively or additionally, the rotational motion of the first rotating element about the first rotation axis is decoupled from the motion of the first output guiding device, particularly from the motion of the guiding element of the first output guiding device / the guiding element, which performs the motion in order to convey the flat element in the first output path.

[0102] Alternatively or additionally, the rotational motion of the first rotating element about the first rotation axis is decoupled from the motion of the second output guide device, particularly from the motion of the guide element of the second output guide device / the guide element, which performs the motion in order to convey the flat element in the second output path.

[0103] The term “decoupling” here can mean that the movement of the elements mentioned can be controlled independently of each other, for example, by a control device.

[0104] In one example, the rotational motion of the second rotating element about the second rotation axis is decoupled from the motion of the input guide device, and in particular from the motion of the guide element of the input guide device / guide element, which performs the motion in order to convey the flat element in the input path.

[0105] Alternatively or additionally, the rotational motion of the second rotating element about the second rotation axis is decoupled from the motion of the first output guide device, particularly from the motion of the guide element of the first output guide device / the guide element, which performs the motion in order to convey the flat element in the first output path.

[0106] Alternatively or additionally, the rotational motion of the second rotating element about the second rotation axis is decoupled from the motion of the second output guide device, particularly from the motion of the guide element of the second output guide device / guide element, which performs the motion in order to convey the flat element in the second output path.

[0107] In another example, when the second rotating element, particularly the second section of the second rotating element, is completely outside the second output path, the rotational movement of the second rotating element about the second rotation axis can be stopped so as to prevent the second rotating element from contacting the flat element that is then being conveyed into the second output path.

[0108] Similarly, in another example, when the first rotating element, in particular the first section of the first rotating element, is completely outside the first output path, the rotational movement of the first rotating element about the first rotation axis can be stopped so as to prevent the first rotating element from contacting the flat element that is being fed into the first output path at this time.

[0109] The rotational motion of the two rotating elements can thus be decoupled from the conveying motion of the conveying device (e.g., belt), both from the conveying device for the input path and from the conveying devices for the two output paths. This means that the first and second rotating elements can be brought to a corresponding first rotational position according to the desired conveying path for the respective flat element, so as to guide the respective flat element into the first or second output path.

[0110] This decoupling allows multiple sequentially arranged flat objects to be guided into the same output path when needed, if necessary or desired. Decoupling enables the flexible sorting of flat elements into different output paths, for example, based on their characteristics, which may only be determined by sensors shortly before the transfer switch.

[0111] Because decoupling allows a segment of the corresponding rotating element (for the corresponding flat element, which does not require deflection) to stop and remain spun out of the output path, the rotating element or segment does not contact the flat element, and the flat element does not contact the retracted segment of the rotating element. This avoids relative movement between the other rotating element or segment and the flat element, and the resulting friction. This is further supported by the clearly retracted segment of the rotating element.

[0112] According to one aspect, a method for conveying a flat element for manufacturing an electrochemical cell is proposed. In one step of the method, the flat element is conveyed through an input path to a branch region by means of an input guide device. In another step, the flat element is conveyed into a first output path by means of a first output guide device, or into a second output path by means of a second output guide device. When conveying the flat element from the branch region to the second output path, the flat element is clamped by means of a first rotating element rotatable about a first rotation axis and a guide element opposite to the first rotating element, particularly the guide element of the second output guide device. When conveying the flat element through the branch region, the first rotating element is brought to a first rotational position in which a first segment of the first rotating element extends into the first output path, such that the first segment, together with the guide element, particularly the guide element of the second output guide device, provides clamping for the flat element. In another step, the first rotating element is brought to a second rotational position in which the first rotating element is completely outside the first output path. Attached Figure Description

[0113] Figure 1 A schematic diagram of an apparatus for conveying a flat element is shown, the apparatus having a first rotating element in a first rotating position.

[0114] Figure 2 Shown from Figure 1 A schematic diagram of a device having a second rotating element in a first rotating position.

[0115] Figure 3 A perspective view of a device for conveying flat components is shown.

[0116] Figure 4 A side view of a device for conveying flat elements is shown, the device having two rotating elements, each in its second rotating position.

[0117] Figure 5 Shown from Figure 4 A side view of the device, wherein the first rotating element is in a first rotating position and the second rotating element is in a second rotating position.

[0118] Figure 6 Shown from Figure 4 A side view of the device, wherein the first rotating element is in the second rotating position and the second rotating element is in the first rotating position.

[0119] Figure 7 Shown from Figure 6 A three-dimensional detailed view of the device configuration.

[0120] Figure 8 Shown from Figure 6 Another three-dimensional detail of the device's configuration.

[0121] Figure 9 Showing the use of Figure 1 and Figure 2 A schematic diagram of an exemplary roller device for the output path of the device.

[0122] Figure 10 A flowchart illustrating a method for transferring flat components is shown. Detailed Implementation

[0123] The illustrations in the accompanying drawings are schematic and not to scale. If the same reference numerals are used in different figures in the following description of the drawings, those reference numerals denote the same or similar elements. The same or similar elements may also be denoteed by different reference numerals.

[0124] Figure 1 A schematic diagram of an apparatus 1 for conveying flat elements 2 used in the manufacture of electrochemical cells, such as battery elements or fuel cell elements, is shown. The apparatus 1 has an input path 3 equipped with an input guide 4 for conveying the flat elements 2 to a branch area 5. The input guide 4 may have an input conveyor belt arrangement comprising one or more conveyor belts guided via corresponding rollers 6, 7. Specifically, the input guide 4 may include an upper guide element 4a that cyclically guides the flat elements 2 via roller 6. The input guide 4 may also include a lower guide element 4b that cyclically guides the flat elements 2 via roller 7. The two guide elements 4a, 4b of the input guide 4 can cause a conveying clamping of the flat elements 2 conveyed in the input path 3. Figure 1 In the case shown, flat element 2 is located in input path 3. The two guiding elements 4a and 4b of input guiding device 4 can move parallel to each other and at the same speed along input path 3, that is, in Figure 1 The device 1 shown is arranged from left to right so that the flat element 2 sandwiched therebetween is conveyed along the input path 3 to the branch area 5.

[0125] exist Figure 1The branch region 5, shown by the dashed rectangle, defines branches from the input path 3 to the first output path 10 and the second output path 20. The first output path 10 includes a first output guide 12 for conveying the flat element 2 from the branch region 5 along a first direction 11. In the illustrated case, no change in direction or turning occurs when the flat element 2 arrives at the first output path 10 from the input path 3. The second output path 20 includes a second output guide 22 for conveying the flat element 2 from the branch region 5 along a second direction 21. In the illustrated case, a change in direction or turning occurs when the flat element 2 arrives at the second output path 20 from the input path 3.

[0126] The first output guiding device 12 may have an output conveyor belt device, which includes one or more conveyor belts guided by corresponding rollers 15, 16. It should be noted that, in Figure 1 In the example shown, the output conveyor belt device has a conveyor belt, but other conveying devices such as suction plates, suction belts, and / or roller conveyors may also be provided. The first output guide device 12 may specifically include an upper guide element 13 that circulates via roller 15 and via rollers coupled to the first rotating element 40. The first output guide device 12 may also include a lower guide element 14 that circulates via roller 16 and one or more other rollers not shown. The two guide elements 13, 14 of the first output guide device 12 can cause a conveying clamping of the flat element 2 conveyed in the first output path 10. Figure 1 In the case shown, two flat elements are located in the first output path 10. Here, the two guiding elements 13 and 14 of the first output guiding device 12 can move parallel to each other and at the same speed along the first output path 10, i.e., in... Figure 1 The device 1 shown is arranged from left to right so that the flat element 2 sandwiched therein is conveyed along the first output path 10 away from the branch region 5. It can be seen that, in particular, no relative movement of the flat element 2 occurs transverse to the conveying direction or transverse to the first direction 11 when conveying the flat element 2 from the input path 3 through the branch region 5 to the first output path 10. This simplifies the movement process and thus protects the material of the flat element 2.

[0127] The second output guiding device 22 may also have an output conveyor belt device, which includes one or more conveyor belts guided by corresponding rollers 7, 25. It should be noted that in... Figure 1In the example shown, the output conveyor belt device has a conveyor belt, but other conveying devices such as suction plates, suction belts, and / or roller conveyors may also be used. The second output guide device 22 may specifically include a lower guide element 23 that circulates through roller 7 and through rollers coupled to the second rotating element 50 and one or more other rollers not shown. The second output guide device 22 may also include an upper guide element 24 that circulates through roller 25 and one or more other rollers not shown. The two guide elements 23, 24 of the second output guide device 22 can cause a conveying clamping of the flat element 2 conveyed in the second output path 20. Figure 1 In the scenario shown, two flat elements are located in the second output path 20. Another flat element 2 is also about to be moved into the second output path 20, as will be explained in more detail below. The two guide elements 23 and 24 of the second output guide device 22 can move parallel to each other and at the same speed along the second output path 20, i.e., in Figure 1 The device 1 shown is angled downwards and to the right so that the flat element 2 sandwiched therein is conveyed away from the branch region 5 along the second output path 20.

[0128] It can be specified that rollers 16 and 25 are arranged on a single (common) shaft, wherein rollers 16 and 25 can rotate independently of each other. In particular, guide elements 14 and 24 (e.g., belts) can be guided via the common shaft of rollers 16 and 25. It can also be specified that rollers 16 and 25 are replaced by a single roller. Guide elements 14 and 24 can here be arranged eccentrically to each other on a common shaft. This improves the compactness of device 1 and reduces the number of rollers to be arranged within device 1.

[0129] The device also includes the first rotating element 40 and the second rotating element 50 mentioned above. In the example shown, the rotating elements 40 and 50 are designed in the form of rollers, but other geometries are also possible for the rotating elements 40 and 50, as will be explained in detail below.

[0130] The first rotating element 40 is rotatable about a first rotation axis 45 according to a first rotational motion 45a or a rotational direction 45a, and is designed to provide a transfer clamping for the flat element 2 together with a guide element 23 (the guide element of the second output guide device 22) opposite to the first rotating element 40, so as to transfer the flat element 2 from the input path 3 to the second output path 20. For this purpose, the first rotating element 40 has a first section 46 that extends into the first output path 10 in a first rotational position 41 of the first rotating element 40, that is, extends through the first output path, such that the first section 46 of the first rotating element 40 extends to the guide element 23 of the second output guide device 22, so as to provide a transfer clamping for the flat element 2 together with the guide element 23 of the second output guide device 22. In order to transfer clamp the flat element 2 during the turning in the branch region 5, the first segment 46 of the first rotating element 40 is pressed against the first surface 2a of the flat element 2, and then the flat element 2 is pressed against the guide element 23 of the opposing second output guide device 22, which ultimately causes transfer clamping between the first segment 46 of the first rotating element 40 and the guide element 23 of the second output guide device 22.

[0131] As in Figure 1 As can be seen, the radius of the first rotating element 40 varies along its circumference such that the first segment 46 of the first rotating element 40 has a larger radius than the adjacent intermediate segment 47 along its circumference. It can be seen that in the first rotating position 41 shown, segment 46 of the first rotating element 40 extends into the first output path 10, such that segment 46 extends to the opposing guide element 23 of the second output guide device 22, which, as described above, enables transfer clamping when turning into the second output path 20.

[0132] The second rotating element 50 is structurally similar to or identical to the first rotating element 40. Specifically, the rotating element 50 is capable of rotating about a second rotation axis 55 according to a second rotational motion 55a or a rotational direction 55a, and also has a first section 56, wherein the second rotating element 50... Figure 1 The first segment 56 of the second rotating element 50 is in the second rotational position 52, in which it does not extend into the second output path 20 because it is, for example, away from the second output path 20. The first segment 56 of the second rotating element 50 is in the second rotational position of the second rotating element 50. Figure 1 The second rotation position 52 shown is therefore completely outside the second output path 20.

[0133] As in Figure 1As can be seen, the radius of the second rotating element 50 also varies along its circumference, such that the first segment 56 of the second rotating element 50 has a larger radius than the adjacent intermediate segment 57 along its circumference. It can be seen that in the second rotating position 52 shown, segment 56 of the second rotating element 50 does not extend into the second output path 20, and therefore segment 56 does not function at this time, i.e., it is not used for clamping.

[0134] Figure 2 Now showing from Figure 1 A schematic diagram of the device is shown, which has a second rotating element 50 in a first rotating position 51. The second rotating element 50 is rotatable about a second rotating axis 55 in a second rotation direction 55a and is designed to provide a transfer clamping for the flat element 2 together with a guide element 13 opposite to the second rotating element 50, so as to transfer the flat element 2 from the input path 3 to the first output path 10. For this purpose, a first section 56 of the second rotating element 50 extends into the second output path 20 in the first rotating position 51 of the second rotating element 50, that is, extends through the second output path, such that the first section 56 of the second rotating element 50 extends to the guide element 13 of the first output guide device 12, so as to provide a transfer clamping for the flat element 2 together with the guide element 13 of the first output guide device 12. In order to transfer clamp the flat element 2 during delivery from branch region 5, the first section 56 of the second rotating element 50 is pressed against the second surface 2b of the flat element 2, and then the flat element 2 is pressed against the guide element 13 of the opposing first output guide device 12, which ultimately causes transfer clamping between the first section 56 of the first rotating element 50 and the guide element 13 of the second output guide device 12.

[0135] exist Figure 2 In the configuration shown, the first rotating element 40 is in a second rotating position 42, in which the first segment 46 of the first rotating element 40 does not extend into the first output path 10, because it is, for example, away from the first output path 10. The first segment 46 of the first rotating element 40 in the first rotating element 40... Figure 2 The second rotational position 42 shown is therefore completely outside the first output path 10. It can be seen that in the second rotational position 42 shown, the first segment 46 of the first rotating element 40 does not extend into the first output path 10, so the segment 46 does not function at this time, that is, it is not used for conveying clamping.

[0136] Figure 1 and Figure 2Also shown is a control unit 100, which can be designed to control the rotational movement 45a of the first rotating element 40 based on the current position of the flat element 2 in the input path 3, and / or based on the current position of the flat element 2 in the first output path 10 or the second output path 20. The control unit 100 can also be designed to control the rotational movement 55a of the second rotating element 50 based on the current position of the flat element 2 in the input path 3, and / or based on the current position of the flat element 2 in the first output path 10 or the second output path 20.

[0137] The device 1 may have a guide element 60 arranged in the branch region 5, wherein the guide element 60 is arranged adjacent to the first output path 10 and after the first rotating element 40 along the first output path 10. The guide element 60 may be arranged such that contact between the flat element 2 being conveyed and the guide element 60 is prevented when the flat element 2 is conveyed from the branch region 5 into the first output path 10. Similarly, the guide element 60 may be arranged such that contact between the flat element 2 being conveyed and the guide element 60 is prevented when the flat element 2 is conveyed from the branch region 5 into the second output path 20. In other words, the guide element 60 may serve as a protective element to prevent the flat element 2 from being misdirected, but not as a sliding element. Preferably, the guide element 60 is arranged such that a distance from the flat element 2 being conveyed is always maintained.

[0138] Figure 3 A perspective view of the device 1 for conveying the flat element 2 is shown. Figure 2 The device shown can, for example, be based on Figure 1 and Figure 2 The apparatus shown is functionally identical. It also has an input path 3 equipped with an input guide 4 for conveying the flat elements 2 to the branch area 5. Three flat elements 2 are shown, which are sequentially conveyed to the branch area 5. The input guide 4 has a conveyor belt system comprising multiple conveyor belts guided by corresponding rollers. The input guide 4 has an upper guide element 4a that is cyclically guided by rollers. The input guide 4 also has a lower guide element 4b that is similarly cyclically guided by rollers. The two guide elements 4a and 4b, along with the parallel (and if necessary, identical) guide elements or belts of the input guide 4, can collectively cause the conveying clamping of the flat elements 2 conveyed in the input path 3. The two guide elements 4a and 4b of the input guide 4 are oriented parallel to each other and move along the input path 3 at the same speed. Figure 1The device 1 shown is arranged from left to right so that the flat element 2 sandwiched therebetween is conveyed along the input path 3 to the branch area 5.

[0139] The first output path 10 is also shown again, in which the flat element 2 can optionally be conveyed from the branch region 5 into the first output path 10. For this purpose, a first output guide device 12 can be used, which may include multiple conveyor belts arranged parallel to each other (and of the same structure if necessary), wherein multiple upper conveyor belts 13 together with multiple lower conveyor belts 14 can ensure the required conveying clamping on the first output path 10.

[0140] The second output path 20 is also shown again, in which the flat element 2 can optionally be conveyed from the branch region 5 into the second output path 20. For this purpose, a second output guide device 22 can be used, which may include multiple conveyor belts arranged parallel to each other (if necessary, with identical structures), wherein the multiple upper conveyor belts together with the multiple lower conveyor belts can ensure the required conveying clamping on the second output path 20.

[0141] Also shown is a first rotating element 40, which is designed here as four plate-shaped or disc-shaped first rotating elements 40 arranged adjacent to each other along a first rotation axis 45. All the first rotating elements 40 are in a second rotational position 42, in which the corresponding first segment 46 of the first rotating element 40 does not extend into the first output path 10. The first segment 46 of the first rotating element 40 is in the first rotating element 40 in the first rotation axis 40 Figure 3 The second rotational position 42 shown is completely outside the first output path 10. It can be seen that in the second rotational position 42 shown, segment 46 of the first rotating element 40 does not extend into the first output path 10, and therefore segment 46 is not functional at this time, i.e., it is not used for conveying clamping. It can be stipulated that the first rotating element 40 is brought to the first rotational position 41 at the same rotational speed to provide conveying clamping in the second output path 20 (see...). Figure 1 ).

[0142] The second rotating element 50 is also shown again, which is designed here as four plate-shaped or disc-shaped second rotating elements 50 arranged parallel to each other along the second rotation axis 55. All the second rotating elements 50 are in the second rotation position 52, in which the corresponding first segment 56 of the second rotating element 50 does not extend into the second output path 20. The first segment 56 of the second rotating element 50 is in the second rotation element 50 Figure 3The second rotational position 52 shown is completely outside the second output path 20. It can be seen that in the second rotational position 52 shown, the segment 56 of the second rotating element 50 does not extend into the second output path 20, and therefore segment 56 does not function at this time, i.e., it is not used for conveying clamping. It can be stipulated that the second rotating element 50 is brought to the first rotational position 51 at the same rotational speed to provide conveying clamping in the first output path 10 (see...). Figure 2 ).

[0143] Figure 4 A side view of device 1 is shown, which has two rotating elements 40 and 50, respectively, in their second rotational positions 42 and 52. (Previously regarding...) Figures 1 to 3 The relationships and functions of device 1 described herein continue to apply.

[0144] The two rotating elements 40 and 50 are respectively designed as plate-shaped or disk-shaped and have an elongated shape. Specifically, the first rotating element 40 has an elongated shape with a first end 40a and a second end 40b, wherein a first segment 46 of the first rotating element 40 is arranged at the first end 40a, and a second segment 48 of the first rotating element 40 is arranged at the second end 40b. Similarly, the second rotating element 50 has an elongated shape with a first end 50a and a second end 50b, wherein a first segment 56 of the second rotating element 50 is arranged at the first end 50a, and a second segment 58 of the second rotating element 50 is arranged at the second end 50b.

[0145] The two rotating elements 40 and 50 have narrowed central sections in the region of rotation axes 45 and 55, and widened sections in the region of the first end 40a and 50a and the second end 40b and 50b. In other words, the two rotating elements 40 and 50 have narrowed central regions and widen towards their respective ends. In this case, the two rotating elements 40 and 50 have point-symmetric geometry with respect to their rotation axes 45 and 55. They are designed similarly to propellers.

[0146] In other words, the first rotating element 40 has a recessed area (e.g., a narrowing or concave portion) in the angular section between the first end 40a and the second end 40b. This recessed area is designed such that the outer surface of the first rotating element 40 in the angular section between the first end 40a and the second end 40b is radially retracted relative to the outer surface of the first section 46. Therefore, the first end 40a and the second end 40b respectively form protruding sections of the first rotating element 40, such as... Figures 4 to 8As shown. Here, blank areas can be provided in the opposite angular sections between the first end 40a and the second end 40b.

[0147] Regarding the other ones Figure 4 The components shown in the image are referred to as follows. Figures 1 to 3 The function of the two rotating elements 40 and 50 within device 1 will now be explained in more detail.

[0148] Figure 5 Shown from Figure 4 A side view of device 1, wherein the first rotating element 40 is in a first rotating position 41 and the second rotating element 50 is in a second rotating position 52. This means that the first rotating element 40 is currently causing a transfer clamping and the second rotating element 50 is currently not functioning. The first rotating element 40 causes a transfer clamping for the flat element 2 by pressing the outer surface 46a of the first segment 46 of the first rotating element 40 against the first surface of the flat element 2. Flat element 2 (see...) Figures 1 to 3 )exist Figure 5 The side view is not shown, but the working principle of the pressing is explained. The outer surface 46a of the first segment 46 of the first rotating element 40 extends from the first rotational position 41 of the first rotating element 40 to the opposing guide element 23 of the second output guide device 22, thereby causing the flat element to press against the opposing guide element 23, and thus allowing the flat element to be clamped between the outer surface 46a and the opposing guide element 23. The flat element, thus turned onto the second output path 20, can then be transported along the second output path 20 by means of the second output guide device 22, during which time the flat element is clamped between the upper guide element 24 and the lower guide element 23, the upper guide element being guided by roller 25 and the lower guide element by roller 26.

[0149] As can also be seen, the first segment 46 of the first rotating element 40 extends through the guide element 13 of the first output guide device 12, that is, the segment 46 of the first rotating element 40 extends into or through the first output path 10 in the first rotational position 41 of the first rotating element 40. It should be understood that the first output path 10 extends along the guide element 13 of the first output guide device 12 because the guide element 13 of the first output guide device 12 is used to convey flat elements on the first output path 10. Regarding further details... Figure 5 The components shown in the image are referred to as follows. Figures 1 to 3 .

[0150] Figures 4 to 6 The rotational state sequence of the first rotating element 40 and the second rotating element 50 is shown in particular. Here, the first rotating element 40 starts from... Figure 4 go through Figures 5 to 6 The counter-clockwise rotation, synchronized with the downward-turning (not shown) flat element, causes the flat element to roll on the outer surface 46a of the first rotating element 40 facing the flat element (see...). Figure 5 This largely or completely avoids relative movement or sliding between the flat element and the outer surface 46a of the first segment 46 of the first rotating element 40. If the next or subsequent flat element also turns downward into the second output path 20, the first rotating element 40 continues to rotate counterclockwise, wherein then the opposing second segment 48 of the first rotating element 40 begins to function, i.e., in the same way as the first segment 46 of the first rotating element 40 previously began to function.

[0151] If the next component is to be conveyed straight into the first output path 10, the rotation of the first rotating component 40 stops at the second rotation position 42 (see [link]). Figure 6 The rotation of the second rotating element 50 is initiated in a clockwise direction. The second rotating element 50... Figures 5 to 6 Clockwise rotation, also synchronized with the flat element (not shown) to be conveyed in a straight line, causes the flat element to roll on the outer surface 56a of the first segment 56 of the second rotating element 50 facing the flat element (see...). Figure 6 This largely or completely avoids relative movement or sliding between the flat element and the outer surface 56a of the first segment 56 of the second rotating element 50. If the next or subsequent flat element is also to be conveyed straight into the first output path 10, the second rotating element 50 continues to rotate clockwise, wherein then the opposing second segment 58 of the second rotating element 50 begins to function, i.e., in the same manner as the first segment 56 of the second rotating element 50 previously began to function. This final state is not in Figures 4 to 6 The sequence shown is illustrated.

[0152] Figure 6 Show Figure 4 and Figure 5 A side view of device 1, wherein the first rotating element 40 is in the second rotating position 42 and the second rotating element 50 is in the first rotating position 51. This means that the second rotating element 50 is currently causing a transfer clamping and the first rotating element 40 is not currently functioning. The second rotating element 50 causes a transfer clamping for the flat element 2 by pressing the outer surface 56a of the first segment 56 of the second rotating element 50 against the first surface of the flat element 2. Flat element 2 (see...) Figures 1 to 3 )exist Figure 6The side view is not shown, but the working principle of the pressing is explained. The outer surface 56a of the first segment 56 of the second rotating element 50 extends in the first rotational position 51 of the second rotating element 50 to the opposing guide element 13 of the first output guide device 12, thereby causing the flat element to press against the opposing guide element 13, and thus allowing the flat element to be clamped between the outer surface 56a and the opposing guide element 13. The flat element thus conveyed to the first output path 10 can then be transported along the first output path 10 by means of the first output guide device 12, during which time the flat element is clamped between the upper guide element 13 and the lower guide element 14 (see...). Figure 1 and Figure 2 Between them, the upper guide element is guided by rollers 6 and 15.

[0153] As can also be seen, the first segment 56 of the second rotating element 50 extends through the guide element 23 of the second output guide device 22, that is, the segment 56 of the second rotating element 50 extends into or through the second output path 20 in the first rotational position 51 of the second rotating element 50. It should be understood that the second output path 20 extends along the guide element 23 of the second output guide device 22 because the guide element 23 of the second output guide device 22 is used to convey flat elements on the second output path 20. Regarding further details... Figure 6 The components shown in the image are referred to as follows. Figures 1 to 3 .

[0154] Figure 7 Show Figures 4 to 6 A three-dimensional top view of device 1, especially of device 1 in Figure 6 The diagram shows a perspective top view of the configuration. It should be understood that the first rotating element 40 has two or more first rotating elements 40 spaced apart from each other along the first rotation axis 45. Figure 7 Two of them are shown in the diagram. Similarly, the second rotating element 50 may have two or more second rotating elements 50 spaced apart from each other along the second rotation axis 55, wherein in Figure 7 Two of them are shown in the diagram. The first rotating element 40 is in the second rotating position 42 and the second rotating element 50 is in the first rotating position 51, thus regarding Figure 6 The same applies to the above content. Figure 7A first rotating element 40, arranged side-by-side along a first rotation axis 45, is rotatably arranged on a first shaft 49. A second rotating element 50, arranged side-by-side along a second rotation axis 55, is rotatably arranged on a second shaft 59. As can be seen, the guide element 23 of the second output guide device 20 extends segmentally between two adjacent second rotating elements 50 when the second rotating element 50 is in its first rotational position 51. Similarly, the guide element 13 of the first output guide device 12 can extend segmentally between two adjacent first rotating elements 40 when the first rotating element 40 is in its first rotational position 41; however, this... Figure 7 Not shown in the text, but involving Figure 5 Configuration.

[0155] Figure 7 Also shown in an enlarged illustration, the outer surface 56a of the first section 56 of the second rotating element 50 extends in the first rotational position 51 of the second rotating element 50 to the corresponding opposing guide element 13 of the first output guide device 12, thereby causing the flat element (not shown) to be pressed against the opposing guide element 13, and thus enabling the flat element to be clamped between the outer surface 56a and the opposing guide element 13.

[0156] It can be specified that the first shaft 49 is fixedly arranged within the device 1 and always has the same distance from the second shaft 59, while the second rotating element 50 is rotatably arranged on the second shaft. Regarding other... Figure 7 The components shown in the image are referred to as follows. Figures 1 to 6 .

[0157] Figure 8 Show Figures 4 to 6 A three-dimensional bottom view of device 1, especially of device 1 in... Figure 6 The diagram shows a perspective bottom view of the configuration, where flat element 2 is also shown. For details on the individual components, see the section on... Figure 7 The explanation. Figure 8 The following state is shown, in which the flat element 2 is clamped between the outer surface 56a and the opposing guide element 13. The second rotating element 50 rotates clockwise about a common second axis of rotation 55, rolls on the surface of the flat element via the outer surface 56a, and the flat element is conveyed along the first output path 10, i.e., in... Figure 8 Transmit from center to right. Regarding other matters... Figure 8 The components shown in the image are referred to as follows. Figures 1 to 7 .

[0158] Figure 9 Showing the use of Figure 1 and Figure 2 A schematic diagram of the roller device of the first output path 10 of the device 1. Figure 9 This shows the first rotating element 40 relative to... Figures 3 to 8 Alternative design scheme. The first rotating element 40 is rotatably arranged on the first shaft 49 and rotates about the first rotation axis 45 in the direction of rotation indicated by the solid arrow. The guide element 13 of the first output path guiding device 10, which is here in the form of a belt, is guided by rollers 17 supported on the shaft 49, i.e., on both sides of the first rotating element 40, wherein the rotation of rollers 17 is indicated by dashed arrows. The rotation of rollers 17 is provided by the guide element 13 via a drive roller 15. The rotation direction of the drive roller 15 and the associated drive shaft 15a is indicated here by dashed arrows. Rollers 17 can be supported on the first shaft 49, so that the rotation of rollers 17 is not transmitted to the first shaft 49. The drive of the first segment 46 can be realized by the fixed connection between the first rotating element 40 and the first shaft 49, so that the drive of the first segment 46 is realized by the rotation of the first shaft 49 about the first rotation axis 45. As can be seen, the first segment 46 of the first rotating element 40 extends beyond the circumference of the roller 17, so that when the first segment 46 of the first rotating element 40 is brought to the first rotating position 41 (see... Figure 1 It can rotate into or be immersed in the first output path 10, which extends directly below the guide element 13. Regarding Figure 9 For other components and their functions shown in the diagram, see [link to diagram]. Figure 1 and Figure 2 .

[0159] Figure 10 A flowchart is shown for a method of conveying a flat element, which can be performed, for example, using the previously described apparatus 1 (see [link]). Figures 1 to 9 ).

[0160] In step S10 of the method, the flat element 2 is conveyed to the branch region 5 via the input guide device 4 through the input path 3. In another step S21, the flat element 2 is conveyed to the first output path 10 via the first output guide device 12, or in another step S22, the flat element 2 is conveyed to the second output path 20 via the second output guide device 22. When conveying the flat element 2 from the branch region 5 to the second output path 20, the flat element 2 is clamped by a first rotating element 40 rotatable about a first rotation axis 45 and a guide element 23 opposite to the first rotating element 40, particularly the guide element of the second output guide device 22. When conveying the flat element 2 through the branch region 5, the first rotating element 40 is brought to a first rotation position 41, in which a first segment 46 of the first rotating element 40 extends into the first output path 10, such that the first segment 46, together with the guide element 23, particularly the guide element of the second output guide device 22, provides clamping for the flat element 2. In another step S32, the first rotating element 40 is brought to a second rotating position 42, in which the first rotating element 40 is completely outside the first output path 10.

[0161] When the flat element 2 is conveyed from the branch region 5 into the first output path 10, a second rotating element 50 capable of rotating about the second rotation axis 55 and another guiding element 13 opposite the second rotating element 50, particularly the guiding element of the first output guiding device 12, provide a conveying clamp for the flat element 2. When conveying the flat element 2 through the branch region 5, the second rotating element 50 can be brought to a first rotation position 51, in which a first segment 56 of the second rotating element 50 extends into the second output path 20, such that the first segment 56, together with the other guiding element 13, particularly the guiding element of the first output guiding device 12, provides a conveying clamp for the flat element 2. In a further step S31, the second rotating element 50 can be brought to a second rotation position 52, in which the second rotating element 50 is completely outside the second output path 20.

Claims

1. A device (1) for conveying a flat element (2) for manufacturing an electrochemical cell, comprising: The input path (3) has an input guide (4) for transferring the flat element (2) to the branch area (5); The first output path (10) has a first output guide (12) for conveying the flat element (2) from the branch area (5) along the first direction (11). The second output path (20) has a second output guide (22) for conveying the flat element (2) from the branch region (5) along the second direction (21). A first rotating element (40) is rotatable about a first rotation axis (45) and is designed together with a guide element (23) opposite to the first rotating element (40) to provide a transfer clamp for the flat element (2) so as to transfer the flat element (2) from the branch area (5) to the second output path (20); The first rotating element (40) has a first rotating position (41) in the rotational motion (45a) of the first rotating element (40) about the first rotating axis (45), in which the first section (46) of the first rotating element (40) extends into the first output path (10), such that the first section (46) together with the guide element (23) provides a transfer clamping for the flat element (2); The first rotating element (40) has a second rotating position (42) in the rotational motion (45a) of the first rotating element (40) about the first rotating axis (45), in which the first rotating element (40) is completely outside the first output path (10).

2. The apparatus (1) according to claim 1, comprising: The second rotating element (50), which is rotatable about the second rotation axis (55) and is designed together with another guide element (13) opposite to the second rotating element (50) to provide a transfer clamp for the flat element (2) so as to transfer the flat element (2) from the branch area (5) to the first output path (10); The second rotating element (50) has a first rotating position (51) in the rotational motion (55a) of the second rotating element (50) about the second rotating axis (55), in which the first section (56) of the second rotating element (50) extends into the second output path (20), such that the first section (56) of the second rotating element (50) together with the other guide element (13) provides a transfer clamping for the flat element (2); The second rotating element (50) has a second rotating position (52) in the rotational motion (55a) of the second rotating element (50) about the second rotating axis (55), in which the second rotating element (50) is completely outside the second output path (20).

3. The apparatus (1) according to any one of the preceding claims. in, The radius of the first rotating element (40) varies along the circumference of the first rotating element (40) such that the first segment (46) of the first rotating element (40) has a larger radius than the intermediate segment (47) of the first rotating element (40) which is adjacent to the first rotating element (40) in the circumference.

4. The apparatus (1) according to any one of the preceding claims. in, The first rotating element (40) has a first end (40a) and a second end (40b); The first section (46) of the first rotating element (40) is arranged at the first end (40a) of the first rotating element (40); The first rotating element (40) has a blanking region in the angular segment between the first end (40a) and the second end (40b). The blanking region is designed such that the outer surface of the first rotating element (40) in the angular segment between the first end (40a) and the second end (40b) is radially retracted relative to the outer surface (46a) of the first segment (46), particularly retracted by at least 20%, preferably at least 40%.

5. The apparatus (1) according to claim 4. in, The first rotating element (40) has a longitudinal shape with a first end (40a) and a second end (40b); The second section (48) of the first rotating element (40) is arranged at the second end (40b) of the first rotating element (40).

6. The apparatus (1) according to claim 5. in, The first rotating element (40) has a third rotating position in which the second segment (48) of the first rotating element (40) extends into the first output path (10), such that the second segment (48) together with the guide element (23) provides a transfer clamping for the flat element (2); The first rotating element (40) has a fourth rotating position in which the first rotating element (40), particularly the first segment (46) and the second segment (48) of the first rotating element (40), are completely outside the first output path (10).

7. The apparatus (1) according to any one of the preceding claims, comprising: Control unit (100) is designed to control the rotational motion (45a) of the first rotating element (40) about the first rotation axis (45) such that the first rotating element (40) rotates about the first rotation axis (45) such that the circumferential speed of the outer surface (46a) of the first segment (46) of the first rotating element (40) is consistent with the conveying speed of the flat element (2) when providing transfer clamping. The first rotating element (40) is designed to provide a transfer clamping for the flat element (2) by pressing the outer surface (46a) of the first section (46) of the first rotating element (40) against the first surface (2a) of the flat element (2). In particular, the first rotating element (40) is rotated such that the outer surface (46a) of the first section (46) of the first rotating element (40) rolls on the first surface (2a) of the flat element (2) while maintaining the transfer clamp.

8. The apparatus (1) according to claim 7. in, The control unit (100) is designed to control the rotational movement (45a) of the first rotating element (40) based on the current position of the flat element (2) in the input path (3).

9. The apparatus (1) according to any one of the preceding claims. in, The first segment (46) of the first rotating element (40) has a circumferential length in the circumferential direction of the first rotating element (40), which is at least 20% of the length of the flat element (2).

10. The apparatus (1) according to any one of the preceding claims. in, The input guide device (4) is designed to transfer the flat element (2) into the branch area (5) by means of the transfer clamping provided by the two opposing guide elements (4a, 4b) of the input guide device (4); The input guide device (4) is designed to maintain the transfer clamping of the flat element (2) in the input guide device (4) at least until the transfer clamping of the flat element (2) provided by the first rotating element (40) and the guide element (23) has occurred.

11. The apparatus (1) according to any one of the preceding claims. in, The first segment (46) of the first rotating element (40) is offset relative to the guiding element (13) in a direction parallel to the first rotating axis (45).

12. The apparatus (1) according to any one of the preceding claims. in, The input guide device (4) has an input conveyor belt device; The first output guiding device (12) has a first output conveyor belt device and the guiding element (13) is a conveyor belt; The second output guide device (22) has a second output conveyor belt device.

13. The apparatus (1) according to any one of the preceding claims, comprising: Guide element (60) arranged in branch area (5); The guide element (60) is arranged adjacent to the first output path (10) and after the first rotating element (40) along the first output path (10); The guide element (60) is specifically arranged such that contact between the flat element (2) being transported and the guide element (60) is prevented when the flat element (2) is transported from the branch region (5) into the first output path (10); and / or The guide element (60) is arranged in such a way that when the flat element (2) is transferred from the branch region (5) to the second output path (20), contact between the transferred flat element (2) and the guide element (60) is prevented.

14. The apparatus (1) according to any one of the preceding claims. in, The rotational motion (45a) of the first rotating element (40) about the first rotation axis (45) is decoupled from the motion of the input guide device (4), particularly from the motion of the guide elements (4a, 4b) of the input guide device (4), which performs this motion in order to convey the flat element (2) in the input path (3); and / or The rotational motion (45a) of the first rotating element (40) about the first rotation axis (45) is decoupled from the motion of the first output guiding device (12), particularly from the motion of the guiding elements (13, 14) of the first output guiding device (12), which performs this motion to convey the flat element (2) in the first output path (10); and / or The rotational motion (45a) of the first rotating element (40) about the first rotating axis (45) is decoupled from the motion of the second output guide device (22), particularly from the motion of the guide elements (23, 24) of the second output guide device (22), which performs the motion in order to transmit the flat element (2) in the second output path (20).

15. A method for conveying a flat element (2) for manufacturing an electrochemical cell, comprising: The flat element (2) is transmitted to the branch area (5, S10) through the input path (3) by means of the input guide device (4); The flat element (2) is transmitted from the branch region (5) to the first output path (10) by means of the first output guiding device (12, S21), or The flat element (2) is conveyed from the branch region (5) to the second output path (20) by means of the second output guiding device (22, S22); wherein, - When the flat element (2) is transferred from the branch region (5) to the second output path (20), a first rotating element (40) capable of rotating about the first rotating axis (45) and a guide element (23) opposite to the first rotating element (40) provide transfer clamping for the flat element (2), and - When the flat element (2) is conveyed through the branch area (5), the first rotating element (40) is brought to the first rotating position (41), in which the first segment (46) of the first rotating element (40) extends into the first output path (10), such that the first segment (46) together with the guide element (23) provides a conveying clamp for the flat element (2); The first rotating element (40) is brought to the second rotating position (42), in which the first rotating element (40) is completely outside the first output path (10) (S32).

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