EP4267326A1

EP4267326A1 - Resetting device for a riveting tool machine or a rivetting attachment device, riveting tool machine comprising the resetting device, and riveting attachment device comprising the resetting device

Info

Publication number: EP4267326A1
Application number: EP21839377.5A
Authority: EP
Inventors: Johannes WOLPERDING; David Jonathan Staebler; Sinisa Andrasic; Peter Stierle; Achim Trick; Thomas Schomisch; Marcus Schuller; Manfred Lutz
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2020-12-22
Filing date: 2021-12-13
Publication date: 2023-11-01
Also published as: DE102020216479A1; WO2022135989A1; CN116648316A

Abstract

The invention relates to a resetting device for a riveting tool machine (134g) or a riveting attachment device (10a; 10b; 10c; 10d; 10e; 10f), comprising at least one removing unit (16a; 16b; 16c; 16d; 16e; 16f) for removing a rivet pin (26a; 26b; 26c; 26d; 26e; 26f), said removing unit (16a; 16b; 16c; 16d; 16e; 16f) comprising at least one removing element (46a; 46b; 46c; 46d; 46e; 46f) for engaging on the rivet pin (26a; 26b; 26c; 26d; 26e; 26f) in a form-fitting and/or force-fitting manner, wherein the removing unit (16a; 16b; 16c; 16d; 16e; 16f) comprises at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) which is designed to transmit a drive force for removing the rivet pin (26a; 26b; 26c; 26d; 26e; 26f) from a drive element (66a; 66b; 66c; 66d; 66e; 66f) of the riveting tool machine (134g) or the riveting attachment device (10a; 10b; 10c; 10d; 10e; 10f) to the at least one removing element (46a; 46b; 46c; 46d; 46e; 46f); and at least one resetting unit (18a; 18b; 18c; 18d; 18e; 18f) which is designed to reset the at least one removing element (46a; 46b; 46c; 46d; 46e; 46f) and the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) to a starting position at least substantially automatically after the rivet pin (26a; 26b; 26c; 26d; 26e; 26f) is removed in order to carry out an additional riveting process. According to the invention, the resetting unit (18a; 18b; 18c; 18d; 18e; 18f) is designed to separate the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) from the drive element (66a; 66b; 66c; 66d; 66e; 66f) at least temporarily, in particular during a movement into the starting position(s), in order to reset the at least one removing element (46a; 46b; 46c; 46d; 46e; 46f) and the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) to the starting position(s).

Description

description

Resetting device for a riveting machine tool or a rivet attachment device, riveting machine tool with the resetting device and rivet attachment device with the resetting device

State of the art

There is already a restoring device for a riveting machine tool or a rivet attachment device, with at least one puller unit for pulling off a rivet mandrel, the puller unit comprising at least one puller element for gripping the rivet mandrel in a positive and/or non-positive manner, the puller unit comprising at least one force transmission element, which is provided for the transmission of a drive force for pulling off the rivet mandrel from a drive element of the riveting machine tool or the rivet attachment device to the at least one pull-off element, with at least one restoring unit which is provided for the purpose of closing the at least one pull-off element and the force transmission element after the rivet mandrel has been pulled off after carrying out a further riveting process, has been proposed, at least essentially automatically, into a basic position.

Disclosure of Invention

The invention is based on a return device for a riveting machine tool or a rivet attachment device, with at least one puller unit for pulling off a rivet mandrel, the puller unit comprising at least one puller element for engaging the rivet mandrel in a positive and/or non-positive manner, the puller unit comprising at least one force transmission element includes that to a transmission of a driving force for a removal of the rivet mandrel from a drive element of the riveting machine tool or the rivet mount setting device is provided on the at least one pull-off element, with at least one restoring unit, which is provided for the purpose of using the at least one pull-off element and the at least one force transmission element to carry out a further riveting process after the rivet mandrel has been pulled off, in particular in each case at least essentially independently, in particular without a change in a drive direction of the drive element, reset to a basic position.

It is proposed that the restoring unit is provided for separating the at least one force transmission element from the drive element at least temporarily, in particular during a movement into the basic position, for resetting the at least one pull-off element and the at least one force transmission element into the basic position(s). In particular, the resetting unit is provided for arranging the at least one force transmission element at a distance from the drive element for resetting the at least one pull-off element and the at least one force transmission element into the basic position(s), at least temporarily, in particular during a movement into the basic position(s). The return unit is preferably provided to lift the at least one force transmission element from the drive element at least partially perpendicularly to a central axis of the extraction unit and/or the drive element in order to reset the at least one extraction element and the at least one force transmission element into the basic position(s). In particular, it is conceivable that the at least one force transmission element and the at least one pull-off element each have different basic positions, with the at least one force-transmission element in particular being arranged differently relative to the at least one pull-off element than when a rivet mandrel is pulled off. In particular, the at least one force transmission element and the at least one pull-off element are intended to be moved along differently formed paths when the at least one pull-off element and the at least one force-transmission element are reset to the basic positions, for example via differently designed guide surfaces. The resetting unit is preferably provided for the purpose of moving the at least one pull-off element, after the rivet mandrel has been pulled off, at least essentially automatically into a pull-up position in order to carry out a further riveting process. reset ready-to-take state of at least one pull-off element. A "ready-to-receive state" is to be understood in particular as a state of the at least one pull-off element in which the pull-off element can positively and/or non-positively engage a rivet mandrel received via the fixing unit in order to pull off a rivet mandrel in the pull-off direction, with the at least one pull-off element in the pull-off direction is movable. In the ready-to-receive state, the at least one pull-off element is preferably arranged at a distance from a rivet mandrel picked up via the fixing unit or, in the ready-to-receive state, rests against the rivet mandrel picked up via the fixing unit, with preferably no positive and/or non-positive connection between the at least one pull-off element and the rivet mandrel consists. Alternatively, it is conceivable that the at least one pull-off element, in the ready-to-take state, acts on a rivet mandrel received via the fixing unit, the pull-off element having not yet been moved in the pull-off direction together with the rivet mandrel. In particular, the pull-off unit has a pull-off section. The pull-off distance is preferably a distance along which the at least one pull-off element is moved with a rivet mandrel connected to the pull-off element in a positive and/or non-positive manner in order to pull off the rivet mandrel. The pull-off section is preferably at least essentially straight. In particular, the pull-off distance is aligned at least essentially parallel to the pull-off direction and/or to the central axis of the pull-off unit. “Essentially parallel” means in particular an orientation of a straight line, a plane or a direction, in particular a straight line encompassing the pulling distance, relative to another straight line, another plane or a reference direction, in particular the pulling direction and/or to the central axis of the pulling unit. be understood, where the straight line, the plane or the direction compared to the other straight line, the other plane or the reference direction, viewed in particular in a projection plane, has a deviation of in particular less than 8°, advantageously less than 5° and particularly advantageously less than 2 °, has. It is conceivable that the at least one pull-off element is arranged in the ready-to-take state and/or in the basic position of the pull-off element at an end of the pull-off path opposite to the pull-off direction. The pull-off element is preferably provided for pulling off the rivet mandrel, in particular from the basic position of the pull-off element ments to be moved along the pull-off path in the pull-off direction together with the rivet mandrel connected to the at least one pull-off element in a positive and/or non-positive fit. The basic position of the at least one pull-off element and the at least one force transmission element preferably corresponds to a position of the at least one pull-off element and the at least one force transmission element when the at least one pull-off element is in the ready-to-take state. In particular, the basic position of the at least one pull-off element and the at least one force transmission element corresponds to a position of the at least one pull-off element and the at least one force transmission element before a rivet mandrel is pulled off and/or when the rivet mandrel is picked up. Preferably, the at least one pull-off element and the at least one force transmission element each have exactly one basic position. In particular, the basic position(s) of the at least one puller element and of the at least one force transmission element is/are in each case as positions of the at least one puller element and the at least one force transmission element relative to the drive element and/or relative to a housing of the rivet attachment device, in particular enclosing the reset device, or of the riveting machine tool.

The restoring device is preferably provided for use in a riveting machine tool or a rivet attachment device, preferably designed as part of a riveting machine tool or a rivet attachment device. The rivet attachment device is preferably intended for use with a machine tool. In particular, the rivet attachment device comprises at least one component, in particular the drive element, which can be driven to transmit a drive force to the puller unit via a drive unit of the machine tool, in particular a motor. The riveting machine tool preferably comprises at least one motor for driving the drive element.

"Essentially independently" is to be understood in particular that an activity or function, in particular the resetting of the at least one pull-off element and the at least one force transmission element in the ready-to-take state and/or the basic positions according to a Pulling off a rivet mandrel without any additional activity on the part of a user and/or without changing a drive direction, in particular of the drive element. The resetting unit is preferably provided to reset the at least one pull-off element and the at least one force transmission element automatically, at least essentially independently, into the ready-to-take state and/or the basic position(s) after a rivet mandrel has been pulled off. Alternatively, it is conceivable that the restoring unit is intended to wait for a user interaction after a rivet mandrel has been pulled off by the pulling unit, for example a brief actuation of a trigger of the machine tool or the riveting machine tool or an actuation of an actuating element of the restoring device or the rivet attachment device, and after the User interaction, preferably without a change in a drive direction, to reset the at least one pull-off element and the at least one force transmission element at least essentially independently into the ready-to-take state and/or the basic position(s).

“Form-fitting” is to be understood in particular as meaning that surfaces of components that are positively connected to one another, in particular the at least one pull-off element and the rivet mandrel, exert a holding force on one another in a direction normal to the surfaces. In particular, the components are in a geometric engagement with one another. The term “non-positive” should be understood in particular to mean that the surfaces of components that are positively connected to one another, in particular the at least one pull-off element and the rivet mandrel, exert a holding force on one another that acts perpendicularly to a normal direction of the surfaces, preferably via a frictional force between the components. “Provided” is to be understood in particular as being specially designed and/or specially equipped. The fact that an object is provided for a specific function is to be understood in particular to mean that the object fulfills and/or executes this specific function in at least one application and/or operating state. In particular, the at least one pull-off element is intended to be moved in a pull-off direction, in particular after positive and/or non-positive engagement with a rivet mandrel, with the rivet mandrel in particular being able to be moved when a specific pull-off force and/or pull-off Pulling section tears off and/or breaks off in the pull-off direction from a base body of a rivet blank. The at least one force transmission element is preferably provided for the purpose of being moved in the pull-off direction via the drive element in order to pull off the rivet mandrel. Preferably, the at least one force transmission element and the at least one pull-off element are intended to be moved together in the pull-off direction in order to pull off a rivet mandrel, wherein in particular a drive force for the movement in the pull-off direction is transmitted from the drive element via the at least one force-transmission element to the at least one pull-off element . The restoring unit is particularly preferably provided for separating the at least one force transmission element from the drive element in order to reset the at least one pull-off element and the at least one force transmission element into the basic position(s) and then, in particular together with the at least one pull-off element, in one of the pull-off directions to move in the opposite reset direction. Preferably, the reset direction is parallel to the peeling direction and opposite to the peeling direction. In a vectorial view of the peeling direction and the reset direction, the reset direction is preferably antiparallel to the peeling direction. The at least one force transmission element is preferably operatively connected to the at least one pull-off element in at least one operating state, with the at least one pull-off element being moved together with the at least one force-transmission element when the at least one force-transmission element moves along the central axis of the pull-off unit, in particular in the pull-off direction or in the reset direction .

In a preferred embodiment, the pull-off unit comprises more than one, in particular exactly two, pull-off element(s). The stripping elements are preferably arranged distributed around the central axis of the stripping unit, in particular at least substantially uniformly. In particular, in an embodiment with exactly two pull-off elements, the pull-off elements are offset from one another by 180° around the central axis of the pull-off unit. In particular, the pull-off elements of the pull-off unit are designed at least essentially in the same way. The pull-off element(s) are preferably designed as a chuck jaw, as a roller or as a roller. In particular, it is conceivable that the at least one pull-off element, preferably on a pull-off surface, has a number tion and/or has an adhesive coating and/or is roughened, preferably to form a positive and/or non-positive fit with a rivet mandrel. The pull-off element(s), in particular pull-off surfaces of the pull-off elements, preferably encloses/enclose the center axis of the pull-off unit in at least one operating state, in particular when arranged on a rivet mandrel, viewed in a plane oriented perpendicular to the center axis of the pull-off unit together over an angular range of at least 120°, preferably at least 220° and preferably at least 300° around the central axis of the drawing unit. The at least one peel-off element preferably has at least one peel-off guide surface which is intended to cooperate with at least one further peel-off guide surface of the peel-off unit and/or the fixing unit. The at least one pull-off element is preferably intended to be moved via the pull-off guide surface of the pull-off element when the pull-off element moves, in particular together with the at least one force transmission element, in the pull-off direction in the direction of the central axis of the pull-off unit. In particular, the at least one pull-off element is intended to be applied to a rivet mandrel via the pull-off guide surface arranged on the pull-off element when the pull-off element moves, in particular together with the at least one force transmission element, in the pull-off direction, in particular via the pull-off surface. The pull-off unit and/or the reset unit are/is preferably designed in such a way that a drive force is/are transmitted from the drive element to the at least one pull-off element of the pull-off unit and the at least one force-transmission element, and the at least one pull-off element and the at least one force-transmission element are reset at least essentially independently purely mechanical.

The configuration of the resetting device according to the invention makes it possible to advantageously reset the at least one pull-off element and the at least one force transmission element into the basic position(s) without any activity by a user of the rivet attachment device or the riveting machine tool and/or without a change in a drive movement of a drive element. Wear or interaction of the at least one force transmission element and the drive element when resetting the at least one pull-off element and the at least a force transmission element in the basic position (s) are advantageously prevented, in particular since the at least one force transmission element and the drive element can be moved at a distance from each other when resetting. An advantageously long service life of the resetting device can be made possible. An advantageously intuitive operation of the rivet attachment device or the riveting machine tool can be made possible.

Furthermore, it is proposed that the pull-off unit comprises at least two, in particular exactly two, force transmission elements which are intended to be moved via the drive element along an axis aligned parallel to the pull-off direction, in particular in the pull-off direction or in the reset direction, with the force-transmission elements being provided for this purpose are respectively to be applied to the driving member for transmitting the driving force about a central axis of the peeling unit and to be separated from the driving member for resetting. An advantageously simple separation of the pull-off unit from the drive element can be made possible. The two power transmission elements are preferably arranged in a uniformly distributed manner around the central axis of the pull-off unit and/or the drive element and/or around the drive element. Preferably, the two force transmission elements are offset by 180° to one another around the central axis of the pull-off unit. The two force transmission elements preferably enclose the drive element at least for the most part, viewed along the pulling direction, for a movement of the force transmission element in the pulling direction, in particular over an angular range of at least 220°, preferably at least 270° and preferably at least 300°, around the central axis of the pulling unit. The two force transmission elements preferably enclose the drive element at least substantially completely, viewed along the pull-off direction, for a movement of the force-transmission element in the pull-off direction. The fact that “the force transmission elements essentially completely enclose the drive element” should be understood in particular to mean that the force transmission elements cover the drive element in at least one plane through the force transmission elements and the drive element, in particular perpendicular to the central axis of the pull-off unit and/or the drive element, over an angular range of at least 340°, preferably at least 350° and preferably at least essentially 355°, around a point within the drive element, in particular especially on the central axis of the pull-off unit and/or the drive element. The restoring unit is preferably provided for the purpose of moving the two force transmission elements in each case at least partially away from the drive element in opposite directions in order to separate the force transmission elements from the drive element. The reset unit is preferably provided to move the two force transmission elements after or during the reset after or during a movement in the reset direction in a direction pointing to the center axis of the pull-off unit and/or oriented obliquely or perpendicularly to the center axis of the pull-off unit. In particular, the axis aligned parallel to the pull-off direction is aligned at least essentially parallel to the central axis of the pull-off unit, to the pull-off direction and/or to the reset direction. Alternatively, it is conceivable that the pull-off unit comprises only one force-transmitting element, which can be placed against the drive element, in particular from one side, although this results in uneven loading of the components.

In addition, it is proposed that the at least one force transmission element forms at least one internal thread or a tooth system, which is/are intended to interact with an external thread or a tooth system of the drive element. An advantageously compact configuration of the resetting device can be made possible. An advantageously simple and reliable power transmission can be achieved between the at least one power transmission element and the drive element. An advantageously simple and direct transmission of a drive force from a motor, in particular an electric motor, which is customary for machine tools and/or riveting machine tools, can be achieved with a rotating output movement. The at least one force transmission element is preferably provided to be driven via the drive element by means of the thread or the toothing. The at least one force transmission element is preferably provided to be released from the toothing or the external thread of the drive element when the drive element is separated for resetting, wherein preferably no interaction between the at least one force transmission element and the drive element can take place during the resetting. It is further proposed that the restoring unit comprises at least one guide unit, in particular a guide link, which is provided for the purpose of moving the at least one force transmission element, depending on a position of the at least one force transmission element, along an axis aligned parallel to the pull-off direction, in particular in the pull-off direction or in the reset direction, to separate from the drive element or to create on the drive element. An advantageously regulated movement of the at least one force transmission element relative to the drive element can take place. The guide unit preferably includes at least one guide surface, which is preferably arranged on the at least one force transmission element. The at least one force transmission element preferably forms the guide surface. The guide unit preferably includes at least one further guide surface, which is formed in particular on a guide element of the guide unit. The guide surface and the further guide surface are preferably provided for the purpose of guiding the at least one force transmission element obliquely or at least substantially perpendicularly relative to the drive element, depending on a position of the at least one force transmission element along the axis aligned parallel to the pull-off direction, in particular in the pull-off direction or in the reset direction to move the axis and/or the central axis of the pull-off unit, preferably to separate the at least one force transmission element from the drive element or to apply the at least one force transmission element to the drive element. "Substantially perpendicular" is to be understood in particular as an orientation of a straight line, a plane or a direction relative to another straight line, another plane or a reference direction, with the straight line, the plane or the direction and the other straight line being the other Plane or the reference direction, viewed in particular in a projection plane, enclose an angle of 90° and the angle has a maximum deviation of in particular less than 8°, advantageously less than 5° and particularly advantageously less than 2°. In particular, the guide surface and the further guide surface are provided to interact during a movement of the at least one force transmission element in the removal direction that is driven by the drive element, preferably to guide the at least one force transmission element. Alternatively or additionally, it is conceivable that the guide unit includes other guide surfaces, in particular the guide surface and the further guide surface are provided for cooperation when resetting the at least one force transmission element and the other guide surfaces are provided for cooperation during the movement of the at least one force transmission element in the removal direction driven by the drive element. It is conceivable that the at least one guide element is designed to be movably mounted relative to the drive element. In particular, the guide element is intended to be moved relative to the drive element when it is reset and/or during the movement of the at least one force transmission element that is driven by the drive element in the removal direction.

Furthermore, it is proposed that the restoring device comprises at least one fixing unit for receiving and fixing the rivet mandrel before the rivet mandrel is pulled off, the fixing unit comprising at least one actuating element which is intended to be used when a user actuates, in particular when the actuating element is pressed a workpiece to be moved in the peeling direction relative to the pull-off unit and/or to the restoring unit, wherein the actuating element in at least one operating state resets the at least one pull-off element and the at least one force transmission element into the basic position(s) with the at least one force transmission element and/or at least one guide element of the restoring unit interacts. An advantageously simple and direct coupling of resetting the at least one pull-off element and the at least one force transmission element with a riveting process initiated by a user can be made possible. In particular, an unintentional resetting of the at least one pull-off element and the at least one force transmission element during a riveting process can advantageously be prevented. In particular, applying the at least one force transmission element to the drive element after resetting the at least one pull-off element and the at least one force transmission element for a renewed riveting process can advantageously be coupled directly to the start of a further riveting process. In this way, in particular, an undesired removal movement of the at least one removal element via the at least one force transmission element and the drive element can advantageously be prevented without a rivet mandrel being accommodated. This can be advantageously ensured that the at least one pull-off element and the at least one force-transmitting element are always in a position for a renewed execution of a riveting process after a reset, in particular without actuation of the actuating element. The fixing unit preferably comprises at least one receiving element for receiving the rivet mandrel, preferably before the rivet mandrel is pulled off. The receiving element delimits at least one recess for receiving the rivet mandrel and for guiding the rivet mandrel through after the rivet mandrel has been pulled off. The recess is preferably arranged centrally around the central axis of the stripping unit. The fixing unit is preferably provided to be placed at least partially on a rivet blank and/or a workpiece to be riveted during a riveting process, preferably via the receiving element and/or an actuating element of the fixing unit. In particular, the fixing unit is provided to receive the rivet mandrel along the central axis in the pull-off direction, with the rivet mandrel in particular being brought up to the at least one pull-off element. The pull-off unit is preferably provided to move the rivet mandrel through the recess after the rivet mandrel has been pulled off when the rivet mandrel is completely retracted by the fixing unit over a complete longitudinal extension of the rivet mandrel along the center axis of the pull-off unit, with the rivet mandrel in particular being arranged at a distance from the receiving element . The actuating element is preferably designed in one piece with the receiving element of the fixing unit. The actuating element and the receiving element are/is preferably designed in the manner of a sleeve. In particular, the actuating element is provided to transmit a movement in the removal direction to the at least one force-transmitting element, with the at least one force-transmitting element in particular being moved to the drive element. In particular, the at least one force transmission element is intended to be connected to the drive element by the internal thread or the teeth when a movement is transmitted via the actuating element in the removal direction and/or obliquely or at least essentially perpendicularly to the removal direction. In particular, the actuating element is spring-loaded against movement in the removal direction when the actuating element is actuated.

In addition, it is proposed that the restoring unit comprises at least one restoring element, in particular a spring, which is intended to at least one pull-off element and the at least one force-transmission element for an at least essentially automatic resetting of the at least one pull-off element and the at least one force-transmission element into the basic position(s) after the at least one force-transmission element has been separated from the drive element in a direction opposite to the pull-off direction, in particular in the resetting direction , to apply a restoring force. A force for at least essentially automatic resetting of the at least one pull-off element and the at least one force transmission element can advantageously be made available simply and inexpensively after the at least one force transmission element has been separated from the drive element. The restoring element is preferably located between the at least one force transmission element and/or a component that is operatively connected to the at least one force transmission element, for example the at least one pull-off element or another component, the restoring device and the drive element and/or one that is immovable relative to the drive element along the central axis of the pull-off unit or fixed component, such as a housing arranged. In particular in the preferred embodiment with two force transmission elements, the restoring element is provided for applying an at least substantially equal restoring force to each of the two force transmission elements. In particular, the restoring element is intended to be tensioned against the restoring force of the restoring element during the movement of the force transmission element driven by the drive element in the pull-off direction. It is conceivable that the restoring unit comprises more than one restoring element, each of which is provided in particular for the at least one pull-off element and the at least one force-transmitting element to reset the at least one pull-off element and the at least one force-transmitting element into the basic position(s) at least essentially independently ) after separating the at least one force transmission element from the drive element in a direction opposite to the pull-off direction, in particular in the reset direction, with a restoring force. In addition, it is conceivable that the restoring elements are each provided for applying a restoring force to one of the force transmission elements. Furthermore, it is proposed that the two force transmission elements are mounted so as to be movable at least partially along an axis aligned perpendicularly to the central axis of the pull-off unit, in particular relative to one another, in order to separate them from the drive element. An advantageously simple and quick separation of the force transmission elements from the drive element can be achieved. In particular, the restoring device comprises at least one bearing unit for a movable bearing of the force transmission elements, in particular in each case at least partially along the axis aligned perpendicularly to the central axis of the pull-off unit, preferably relative to one another. It is conceivable that the two force transmission elements, in particular via the bearing unit, can each be moved completely along the axis aligned perpendicularly to the central axis of the pull-off unit. The bearing unit preferably comprises at least one bearing guide, with the two force transmission elements each being movable within the at least one bearing guide along the axis aligned perpendicularly to the central axis of the pull-off unit. The bearing unit particularly preferably comprises two bearing guides which are each provided for receiving one of the two force transmission elements. Alternatively, it is conceivable that the two force transmission elements, in particular via the bearing unit, are each rotatably mounted about a pivot axis oriented perpendicularly or transversely to the center axis of the pull-off unit and/or to the pull-off direction, with the two force-transmission elements each being partially pivoted about one of the pivot axes along the axis perpendicular to the center axis axis aligned with the pull-off unit are movable relative to each other. Preferably, the bearing unit comprises at least two bearing elements, which, for example, each as a pin, extension or the like. are trained. In particular, the force transmission elements each delimit at least one recess of the bearing unit for accommodating one of the bearing elements. Alternatively, it is conceivable that the bearing elements are each arranged, in particular fastened, on one of the two force transmission elements, with at least two recesses of the bearing unit being arranged at a distance from the force transmission elements. Preferably, the two recesses are delimited by a component of the restoring device that is movable relative to the drive element along the center axis of the pull-off unit, for example, a component that is immovable relative to the at least one pull-off element along the center axis of the pull-off unit, and is different from the force transmission element(s). Furthermore, it is proposed that the pull-off unit and/or the restoring unit comprises at least one, in particular another, restoring element, which is intended to apply a restoring force to the two force transmission elements to separate them from the drive element, in particular away from the central axis of the pull-off unit , wherein in particular an application of the force transmission elements to the drive element takes place against the restoring force. Advantageously, the force transmission elements can be separated from the drive element quickly and independently. An advantageously directed force for separating the force transmission elements from the drive element can be made possible, in particular independently of a position of the force transmission elements along an axis aligned parallel to the pull-off direction and/or independently of a release of the force transmission elements, for example by guide surfaces or the like. In particular the at least one further restoring element is designed as a spring or as another component that is elastic during compression. The at least one further restoring element is preferably arranged between the two force transmission elements. In particular, the at least one further restoring element is provided to apply a restoring force to the two force transmission elements in two opposite directions directed away from the central axis of the pull-off unit and/or away from the drive element. In a preferred embodiment, the pull-off unit and/or the restoring unit comprise/encompasses at least two, in particular precisely two, further restoring elements, with a further restoring element preferably being arranged on each side of the drive element and/or the central axis of the pull-off unit between the two force transmission elements. The guide unit, in particular the guide surface and the further guide surface, is preferably provided to hold the two force transmission elements on the drive element for movement in the removal direction driven by the drive element against the restoring force of the further restoring element(s). The further reset element(s) is/are preferably provided to separate the two force transmission elements for resetting in the reset direction from the drive element and preferably to keep them spaced apart from the drive element until a basic position is reached. The further reset element(s) is/are preferably ments/restoring elements are provided to apply the restoring force to the two force transmission elements, each with an axis aligned at least substantially perpendicular to the extraction direction and/or to the center axis of the extraction unit and/or the drive element. In particular, the two force transmission elements are intended to be pushed apart, in particular towards, by the restoring force of the further restoring element/restoring elements, in particular along the axis aligned at least substantially perpendicular to the pull-off direction and/or to the central axis of the pull-off unit and/or the drive element an interaction of the guide surface and the further guide surface or the other guide surfaces.

In addition, it is proposed that the guide unit comprises at least one guide element, in particular the aforementioned guide element, which is provided to move, depending on a position of the at least one force transmission element, along the axis aligned parallel to the pull-off direction, in particular the pull-off direction or the reset direction of the at least one force transmission element to interact with at least one guide extension of the at least one force transmission element relative to a central axis of the pull-off unit, wherein the restoring unit comprises at least one stop which is provided for the purpose of interacting with the guide element in an end position of the at least one force transmission element during or after the rivet mandrel has been pulled off to cooperate, wherein the guide element is intended to be moved relative to the at least one force transmission element, in particular in the reset direction, when interacting with the stop. A purely mechanical configuration of the restoring unit can advantageously be made possible, in particular independently of sensors and/or electronic components. An advantageously simple release of the at least one force transmission element to separate it from the drive element can be made possible. In particular, an advantageously compact restoring device can be made possible, preferably viewed along the pull-off direction. The stop is preferably arranged and/or formed on a component that is immovable and/or fixed relative to the drive element along the central axis of the pull-off unit. For example, the stop on an inner wall of a housing of the resetting device Arranged and / or formed rivet attachment device and / or the riveting machine. The stop preferably limits a movement of the at least one guide element in the removal direction. The resetting unit preferably includes at least one further stop, which limits the movement of the at least one guide element counter to the removal direction, in particular in the resetting direction. The further stop is preferably provided to interact with the guide element when the force transmission element is reset, the guide element being intended to be moved relative to the at least one force transmission element, in particular in the removal direction, when interacting with the further stop. The guide element preferably limits a movement of the at least one force transmission element for separating the at least one force transmission element from the drive element by interacting with the guide extension, preferably at an angle or at least essentially perpendicular to the pull-off direction. Preferably, the guide element delimits at least one recess, which is intended to receive the guide extension at least for the most part, in particular at least essentially completely, in at least one operating state. The at least one force transmission element is preferably provided to be separated from the drive element when the guide extension is received in the recess delimited by the guide element, preferably via the restoring force of the at least one further restoring element. The guide element and the at least one force-transmitting element, in particular the guide extension, are preferably designed and/or arranged in such a way that the at least one force-transmitting element when the guide extension is received in the recess delimited by the guide element, in particular via the bearing guide, at an angle or over a greater distance is movable relative to the drive element at least substantially perpendicularly to the removal direction, as in the case of an arrangement of the at least one force transmission element on the guide element, the guide extension being arranged outside of the recess delimited by the guide element. The at least one guide element is preferably provided to be moved relative to the at least one force transmission element when interacting with the stop in such a way that the guide extension is moved into the recess, in particular via the restoring force of the further restoring element, wherein preferably the at least one power transmission element is separated from the drive element. Preferably, the at least one guide element is intended to be moved relative to the at least one force transmission element when interacting with the further stop in such a way that the guide extension comes out of the recess, in particular against the restoring force of the further restoring element and/or via the guide surface of the guide element is moved out, wherein preferably the at least one force transmission element is applied to the drive element. In particular, the at least one force transmission element is intended to be moved in the reset direction when the at least one guide element interacts with the further stop via the reset element relative to the guide element, with the guide extension in particular being moved out of the recess via a guide surface of the guide unit arranged on the guide element is moved. The at least one force transmission element is preferably intended to be moved in the direction of the drive element against the restoring force of the further restoring element when the guide extension is moved out of the recess, with the at least one force transmission element preferably being applied to the drive element. In particular, the at least one force transmission element is intended to be moved, driven by the at least one pull-off element via the drive element, in the pull-off direction after contact with the drive element to pull off a rivet mandrel. In a preferred refinement, the guide unit comprises two guide elements which, in particular, are of at least essentially identical design. In particular, the two guide elements are each provided to interact with one of the two force transmission elements, in particular a guide extension of one of the two force transmission elements. Each of the two force transmission elements preferably forms a guide extension. In particular, the guide element(s) is/are arranged on a side of a force transmission element facing away from the center axis, viewed along the center axis of the pull-off unit.

It is also proposed that the restoring device comprises at least one fixing unit for receiving and fixing the rivet mandrel before the rivet mandrel is pulled off, with the fixing unit having at least one actuating element which is intended to be moved relative to the pull-off unit and/or to the reset unit in a pull-off direction of the pull-off unit when a user actuates it, in particular when the actuating element is pressed against a workpiece, with the actuating element being intended to move the at least one To move the power transmission element upon actuation from the basic position of the at least one power transmission element in the removal direction to the drive element, wherein the at least one power transmission element is brought into engagement with the drive element to a driven removal movement. A fixed starting position at the start of a new riveting process can advantageously be made possible, in particular since a force transmission to the force transmission element can advantageously be prevented before the actuating element is actuated. An undesired renewed driven movement of the force transmission element and the pull-off element after a reset, for example by a residual movement of the drive element or an actuation of a trigger of the machine tool or the riveting machine tool, can advantageously be prevented. In the basic position of the at least one force transmission element, the at least one force transmission element is preferably guided back at an angle or at least essentially perpendicularly to the central axis of the pull-off unit so that it rests against the drive element.

In addition, a rivet attachment device for use with a machine tool is proposed, having at least one reset device according to the invention. The rivet attachment device preferably comprises at least one connection unit for non-rotatable attachment to a machine tool. The connection unit is preferably provided for interaction with a connection unit of the machine tool, with the rivet attachment device in particular being non-rotatable via the connection unit, in particular relative to an axis aligned at least essentially parallel to the removal direction, to the central axis of the removal unit and/or to an attachment direction of the connection unit attached to the machine tool. The pull-off direction is preferably arranged at least essentially parallel to the central axis of the pull-off unit and/or to the push-on direction of the connection unit. Preferably, the connection unit is provided to be arranged on the machine tool via a movement in the push-on direction in particular via at least one subsequent movement of the connection unit, in particular a connection element of the connection unit, about an axis aligned at least essentially parallel to the pull-off direction, to a central axis of the pull-off unit and/or to a push-on direction of the connection unit, the rivet attachment device is fastened to the machine tool . It is conceivable that the connection unit comprises at least one closure element, which is provided to secure the connection unit in a state in which it is fastened to the machine tool. In a preferred embodiment, the connection unit is designed as part of a FlexiClick fastening system. The connection unit preferably has at least one central axis and a plurality of possible fastening positions around the central axis, the connection unit being intended to be fastened to the machine tool in one of the plurality of possible fastening positions. It is conceivable that the rivet attachment device comprises at least one collection container for collecting rivet mandrels drawn in via the pull-off unit. The pull-off unit is preferably provided to pull a rivet mandrel completely through the fixing unit in the pull-off direction after the rivet mandrel has been pulled off. In particular, the pull-off unit and/or the restoring unit are/are provided for dispensing the rivet mandrel after the rivet mandrel has been pulled off, preferably into the collection container. The collecting container is preferably arranged at a distance from the central axis of the extraction unit, for example on an underside of the rivet attachment device.

The configuration of the rivet attachment device according to the invention advantageously enables a reset by the reset device for a further riveting process after a riveting process without any activity by a user and/or without a change in a drive movement of a drive element. An advantageously high longevity can be made possible. An advantageously intuitive operation of the rivet attachment device can be made possible.

A riveting machine tool with a reset device according to the invention is also proposed. The riveting machine tool preferably comprises at least one drive unit, in particular a motor, for a lashing providing a driving force. The drive unit is preferably provided to drive the drive element, in particular in a rotating manner, in at least one operating state. It is conceivable that the riveting machine tool comprises at least one collection container for catching rivet mandrels drawn in via the pull-off unit. The collection container is preferably arranged at a distance from the central axis of the extraction unit, for example on an underside of the rivet attachment device.

The configuration of the riveting machine tool according to the invention advantageously enables a reset by the reset device for a further riveting process after a riveting process without any activity by a user and/or without a change in a drive movement of a drive element. An advantageously high longevity can be made possible. An advantageously intuitive operation of the riveting machine tool can be made possible.

The restoring device according to the invention, the rivet attachment device according to the invention and/or the riveting machine tool according to the invention should/should not be limited to the application and embodiment described above. In particular, the restoring device according to the invention, the rivet attachment device according to the invention and/or the riveting machine tool according to the invention can have a number of individual elements, components and units that differs from the number specified here in order to fulfill a function described herein. In addition, in the value ranges specified in this disclosure, values lying within the specified limits should also be considered disclosed and can be used as desired.

drawing

Further advantages result from the following description of the drawing. The drawing shows seven exemplary embodiments of the invention. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into further meaningful combinations. Show it:

1 shows a schematic representation of a rivet attachment device according to the invention with a reset device according to the invention in a cross section,

2 shows an exploded sketch of the rivet attachment device according to the invention,

3 shows a schematic sectional view of the rivet attachment device according to the invention in a region of the reset device according to the invention in a position before a rivet mandrel is pulled off,

4 shows a schematic sectional view of the rivet attachment device according to the invention in the area of the reset device according to the invention in a position after a rivet mandrel has been pulled off,

5 shows a schematic sectional view of the rivet attachment device according to the invention in the area of the resetting device according to the invention in a position after force transmission elements of the resetting device have been separated from a drive element of the rivet attachment device in order to reset the force transmission elements into a basic position,

6 shows a schematic sectional view of the rivet attachment device according to the invention in the area of the resetting device according to the invention in a position when resetting the force transmission elements into the basic position,

7 shows a schematic representation of a first alternative embodiment of a rivet attachment device according to the invention with a resetting device according to the invention in a cross section, with two force transmission elements of the resetting device being rotatably mounted,

8 shows a schematic representation of a second alternative embodiment of a rivet cap device according to the invention with a resetting device according to the invention in a transverse section, with two force transmission elements of the return device being movable along a link guide,

9 shows a schematic representation of a third alternative embodiment of a rivet attachment device according to the invention with a restoring device according to the invention in a cross section, the restoring device comprising two rolling balls as bearings between force transmission elements and guide elements,

10 shows a schematic representation of a fourth alternative embodiment of a rivet attachment device according to the invention with a resetting device according to the invention in a cross section, the resetting device comprising at least one actuating lever for releasing a resetting of pull-off elements and force transmission elements of the resetting device,

11 shows a schematic representation of a fifth alternative embodiment of a rivet attachment device according to the invention with a resetting device according to the invention in a cross section, with a force transmission element of the resetting device interacting with drive elements of the rivet attachment device via toothings and

12 shows a schematic representation of a riveting machine according to the invention with a resetting device according to the invention.

Description of the exemplary embodiments

FIG. 1 shows a rivet attachment device 10a for setting blind rivets. The rivet attachment device 10a is intended for use with a machine tool 12a (shown only schematically in FIG. 1). In particular, the machine tool 12a is designed as a cordless screwdriver. However, other configurations of the machine tool 12a for use with the rivet attachment device 10a are also conceivable. The rivet attachment device 10a comprises a resetting device 14a, which in particular has a pull-off unit 16a, a resetting unit 18a and a fixing unit 20a. The rivet attachment device 10a comprises a housing 22a and a collection container 24a for catching rivet mandrels 26a drawn in via the pull-off unit 16a. The collection container 24a is detachably arranged on the housing 22a. In particular, the collection container 24a is attached to the housing 22a via a connection interface. Alternatively, it is also conceivable that the collection container 24a is formed in one piece with the housing 22a. The collection container 24a is arranged on an underside of the rivet attachment device 10a. The rivet attachment device 10a also includes a connection unit 28a for non-rotatable attachment to the machine tool 12a. The pull-off unit 16a is provided for pulling off a rivet mandrel 26a in a pull-off direction 30a. The pull-off unit 16a comprises a center axis 32a, with the fixing unit 20a in particular being provided for receiving a rivet mandrel 26a along the center axis 32a of the pull-off unit 16a, with the pull-off unit 16a being provided for pulling the rivet mandrel 26a along the center axis 32a of the pull-off unit 16a. In particular, during a riveting process, when the rivet mandrel 26a is pulled off, the rivet mandrel 26a is separated, in particular torn off, from a base body of a blind rivet, with the base body being deformed and two workpieces to be riveted connected to one another, in particular riveted. The pull-off unit 16a is provided to pull the rivet mandrel 26a completely through the fixing unit 20a in the pull-off direction 30a after the rivet mandrel 26a has been pulled off.

The connection unit 28a is designed as part of a FlexiClick fastening system. The connection unit 28a has a center axis 34a and a plurality of possible fastening positions about the center axis 34a of the connection unit 28a, the connection unit 28a being intended to be fastened to the machine tool 12a in one of the plurality of possible fastening positions. The connection unit 28a is intended to interact with a connection unit 28a of the machine tool 12a, in particular the rivet attachment device 10a via the connection unit 28a, in particular relative to an at least substantially parallel to the pull-off direction 30a, to the central axis 32a of the pull-off unit 16a and/or to a Attachment direction 36a of the connection unit 28a aligned axis, in particular relative to the central axis 34a of the connection unit 28a, is attached to the machine tool 12a in a torque-proof manner. The connection unit 28a is intended to be arranged on the machine tool 12a via a movement in the mounting direction 36a, with at least one subsequent movement of the connection unit 28a, in particular a connection element 38a of the connection unit 28a, around the central axis 34a of the connection unit 28a securing the Rivet attachment device 10a takes place on the machine tool 12a. The connection unit 28a comprises a closure element 40a, which is provided to secure a state of the connection unit 28a that is fastened to the machine tool 12a. In particular, the central axis 34a of the connecting unit 28a is aligned at least essentially parallel, in particular coaxially, to the central axis 32a of the pull-off unit 16a. A number of possible fastening positions of the connection unit 28a of the rivet attachment device 10a on the machine tool 12a is preferably at least 4, preferably at least 12 and preferably at least 16. The possible fastening positions of the connection unit 28a of the rivet attachment device 10a on the machine tool 12a are evenly distributed around the central axis 34a of the connection unit 28a formed. However, other configurations of the connection unit 28a are also conceivable for a non-rotatable attachment of the rivet attachment device 10a to the machine tool 12a, in particular configurations different from a Flexi Click attachment system.

The fixing unit 20a is provided for receiving and fixing the rivet mandrel 26a before the rivet mandrel 26a is pulled off. The fixing unit 20a includes a receiving element 42a, which is also designed as an actuating element 44a of the fixing unit 20a. The receiving element 42a delimits a recess for receiving a rivet mandrel 26a along the central axis 32a of the pull-off unit 16a. The receiving element 42a is intended to be moved relative to the pull-off unit 16a, to the housing 22a and to the reset unit 18a in the pull-off direction 30a when a user actuates, in particular when the receiving element 42a is pressed against a workpiece to be riveted. The receiving element 42a is designed in particular in the manner of a sleeve. Other configurations of the fixing unit 20a are also conceivable, with the receiving element 42a and the actuating element 44a being formed separately, for example. The pull-off unit 16a comprises two pull-off elements 46a, which are each designed as a clamping jaw. The pull-off elements 46a are each provided for positive and non-positive engagement on the rivet mandrel 26a for pulling off the rivet mandrel 26a in the pull-off direction 30a. The pull-off elements 46a are intended to be placed on the rivet mandrel 26a in the direction of the central axis 32a of the pull-off unit 16a in order to positively and non-positively engage on the rivet mandrel 26a. In particular, the pull-off elements 46a each have toothing for a form-fitting connection with the rivet mandrel 26a, which in particular forms a pull-off surface 48a. Puller unit 16a includes a connector 50a, which is fixedly connected to a base body 52a of puller unit 16a that is movably mounted along central axis 32a of puller unit 16a, in particular relative to housing 22a of rivet attachment device 10a and relative to receiving element 42a, for example via a screw connection. The peeling members 46a each form two peeling guide surfaces 54a. The connecting piece 50a has two further pull-off guide surfaces 56a which are intended to cooperate with a pull-off guide surface 54a arranged on the respective pull-off element 46a to guide one of the pull-off elements 46a in order to release a rivet mandrel 26a. The actuator 44a/receiver 42a has two other puller guide surfaces 56a which are intended to cooperate with a puller guide surface 54a disposed on the respective puller element 46a to guide one of the puller elements 46a into engagement with a rivet mandrel 26a. In particular, one removal guide surface 54a of the two removal guide surfaces 54a arranged on one of the removal elements 46a is provided for the purpose of interacting with another removal guide surface 56a of the two further removal guide surfaces 56a, arranged on the actuating element 44a/receiving element 42a, when the respective removal element 46a moves in the removal direction 30a, wherein the respective pull-off element 46a is moved obliquely or perpendicularly to the pull-off direction 30a toward the central axis 32a of the pull-off unit 16a, preferably to engage a rivet mandrel 26a in a positive and non-positive manner. Preferably, another pull-off guide surface 54a of the two pull-off guide surfaces 54a arranged on one of the pull-off elements 46a is provided for the purpose, when the respective pull-off element 46a moves in a reset direction 58a of the pull-off unit unit 16a and/or the restoring unit 18a to interact with one of the two further removal guide surfaces 56a arranged on the connection piece 50a, with the respective removal element 46a being moved away from the central axis 32a of the removal unit 16a at an angle or perpendicularly to the removal direction 30a, preferably towards one Detaching the pull-off element 46a from a pulled-off rivet mandrel 26a. In the release direction to reset the pull-off elements 46a, the pull-off elements 46a act between the connecting piece 50a and the actuating element 44a/receiving element 42a. In particular, the two pull-off elements 46a are movably mounted relative to the socket 50a and the base body 52a of the pull-off unit 16a, preferably along the central axis 32a of the pull-off unit 16a. The pull-off unit 16a preferably comprises a spring 60a, which is arranged between the main body 52a of the pull-off unit 16a, which is movably mounted along the central axis 32a of the pull-off unit 16a, and the two pull-off elements 46a. The spring 60a is preferably provided to apply a restoring force to the pull-off elements 46a in the reset direction 58a. The pull-off elements 46a are provided for a movement in the pull-off direction 30a via the pull-off guide surfaces 54a, in particular in cooperation with the other pull-off guide surfaces 56a, for positive and non-positive engagement on a rivet mandrel 26a at an angle or perpendicular to the pull-off direction 30a to the central axis 32a of the pull-off unit 16a to be moved towards. The pull-off elements 46a are provided for a movement in the reset direction 58a via the pull-off guide surfaces 54a, in particular in cooperation with the further pull-off guide surfaces 56a and the receiving element 42a, to release a pulled-off rivet mandrel 26a obliquely or perpendicularly to the pull-off direction 30a from the central axis 32a of the pull-off unit 16a to be moved away.

The pull-off unit 16a comprises two force transmission elements 62a, each of which forms part of an internal thread 64a. The two force transmission elements 62a together form in particular a two-part threaded nut. The two power transmission elements 62a are provided to transmit a drive force for pulling off the rivet mandrel 26a from a drive element 66a of the rivet attachment device 10a to the pull-off elements 46a. In particular, the drive element 66a is not shown in section in the figures. The two power transmission elements 62a are provided to over the drive element 66a to be moved along an axis aligned parallel to the pull-off direction 30a. The internal thread 64a of the two force transmission elements 62a is intended to interact with an external thread 68a of the drive element 66a. The two force transmission elements 62a enclose the drive element 66a for a movement of the force transmission elements 62a driven by the drive element 66a in the removal direction 30a, in particular when the force transmission elements 62a are in contact with the drive element 66a, viewed along the removal direction 30a, in particular in a region of the internal thread 64a, at least essentially completely. The resetting unit 18a is provided for the purpose of resetting the pull-off elements 46a, after the rivet mandrel 26a has been pulled off, to carry out a further riveting process, at least essentially independently, in each case in a ready-to-receive state of the pull-off elements 46a. The resetting unit 18a is provided for the purpose of resetting the two pull-off elements 46a and the two force transmission elements 62a to a basic position at least essentially independently after the rivet mandrel 26a has been pulled off, in particular without changing the drive direction of the drive element 66a. The resetting unit 18a is provided to separate the two force transmission elements 62a from the drive element 66a at least temporarily, in particular during a movement into the normal position, for resetting the pull-off elements 46a and the force transmission elements 62a into the basic position. The two force transmission elements 62a are intended to be applied to the drive element 66a in order to transmit the drive force about the central axis 32a of the pull-off unit 16a and to be separated from the drive element 66a for resetting, in particular via the reset unit 18a. The two power transmission elements 62a are provided to transmit the drive force for pulling off a rivet mandrel 26a from the drive element 66a to the pull-off elements 46a of the pull-off unit 16a acting on the rivet mandrel 26a. FIG. 1 shows in particular the state of readiness for take-up of the pull-off elements 46a, with the pull-off elements 46a and the force transmission elements 62a in particular being arranged in the basic position. In the basic position, the two force transmission elements 62a are arranged at a distance from the drive element 66a along the central axis 32a of the pull-off unit 16a. In particular, the two force transmission elements 62a are provided for hen to be moved to the drive element 66a when the actuating element 44a is actuated from the basic position in the removal direction 30a.

The restoring device 14a comprises a bearing unit 70a for a movable bearing of the force transmission elements 62a, in each case at least partially along an axis 72a aligned perpendicularly to the central axis 32a of the pull-off unit 16a. The two force transmission elements 62a can be moved relative to one another via the bearing unit 70a. The two force-transmitting elements 62a are mounted via the bearing unit 70a so that they can be moved completely along the axis 72a, which is aligned perpendicularly to the central axis 32a of the pull-off unit 16a. The bearing unit 70a includes two bearing guides 74a, each of which is delimited by the base body 52a of the pull-off unit 16a. The bearing guides 74a are each formed as recesses formed perpendicular to the pull-off direction 30a. In particular, the two force transmission elements 62a are each arranged at least for the most part in one of the bearing guides 74a and are movably supported along the bearing guides 74a. The base body 52a of the pull-off unit 16a is in particular sleeve-like and includes a recess formed around the center axis 32a of the pull-off unit 16a for receiving the drive element 66a depending on a position of the base body 52a along the center axis 32a of the pull-off unit 16a. In particular, a central axis of the drive element 66a, which is designed in particular as a rotational axis of the drive element 66a, is formed coaxially with the central axis 32a of the pull-off unit 16a when the drive force is transmitted from the machine tool 12a. Preferably, the two bearing guides 74a extend from the central axis 32a of the stripper unit 16a through a full thickness of the main body 52a of the stripper unit 16a, radially outwardly away from the central axis 32a. The two force transmission elements 62a are movably mounted for separating from the drive element 66a and for contacting the drive element 66a along the axis 72a aligned perpendicularly to the central axis 32a of the pull-off unit 16a, in particular relative to one another.

The actuating element 44a of the fixing unit 20a is intended to, when actuated by a user, in particular when the actuating element 44a and the receiving element 42a are pressed against a workpiece, the two force transmission elements 62a together with the pull-off elements 46a and to move the base body 52a to a connection with the drive element 66a in the pull-off direction 30a, wherein in particular the internal thread 64a is brought into engagement with the external thread 68a of the drive element 66a.

Resetting unit 18a includes a guide unit 76a, which is provided for separating or attaching force transmission elements 62a to or from drive element 66a, depending on a position of force transmission elements 62a along the axis aligned parallel to removal direction 30a, in particular in removal direction 30a or in reset direction 58a to apply to the drive member 66a. The guide unit 76a preferably comprises two guide surfaces 78a, which are each arranged on one of the force transmission elements 62a. The force transmission elements 62a each form a guide extension 80a, which each at least partially encompasses one of the guide surfaces 78a. The guide surfaces 78a are each arranged on a side of the force transmission elements 62a that faces away from the central axis 32a of the pull-off unit 16a. The guide unit 76a includes two guide elements 82a and two further guide surfaces 84a, which are each arranged on one of the two guide elements 82a. The guide surfaces 78a and the further guide surfaces 84a are provided for guiding the two force transmission elements 62a obliquely or at least substantially perpendicular to the axis and/or the central axis 32a of the pull-off unit 16a relative to one another, preferably to separate the force transmission elements 62a from the drive element 66a or to apply the force transmission elements 62a to the drive element 66a. In particular, the guide surfaces 78a and the further guide surfaces 84a are provided to interact during a movement of the force transmission elements 62a driven by the drive element 66a in the removal direction 30a, preferably for guiding the force transmission elements 62a. The two guide elements 82a are designed to be movably mounted relative to the drive element 66a. The guide elements 82a are intended to be moved in the pull-off direction 30a relative to the drive element 66a during the reset and/or during the movement of the two force transmission elements 62a driven by the drive element 66a. The two guide elements 82a are provided to move the force transmission elements 62a relative to the central axis 32a of the extraction unit 16a, depending on a position of the two force transmission elements 62a along the axis aligned parallel to the extraction direction 30a, in particular the extraction direction 30a or the reset direction 58a to interact with one of the guide extensions 80a of the force transmission elements 62a. The reset unit 18a includes two stops 86a and two further stops 88a. The two further stops 88a are formed by the housing 22a of the rivet attachment device 10a. The two stops 86a are formed by a component of the connection unit 28a. However, other configurations of the stops 86a, 88a are also conceivable, for example as part of the fixing unit 20a or the like. The two stops 86a are provided to interact with the two guide elements 82a when the two force transmission elements 62a are in an end position in the removal direction 30a during or after removal of the rivet mandrel 26a, with the guide elements 82a each being provided to interact with one of the stops 86a to be moved relative to the two force transmission elements 62a, in particular in the reset direction 58a. The two stops 86a are immovably and/or fixedly arranged along the central axis 32a of the pull-off unit 16a. The two stops 86a each limit a movement of one of the guide elements 82a in the removal direction 30a. The two further stops 88a each limit the movement of one of the guide elements 82a counter to the removal direction 30a, in particular in the reset direction 58a. The further stops 88a are intended to interact with the guide elements 82a when the force transmission elements 62a are reset, the guide elements 82a being intended to be moved relative to the two force transmission elements 62a in the pull-off direction 30a when they interact with the further stops 88a. By interacting with the guide extensions 80a, the two guide elements 82a each limit a movement of one of the force transmission elements 62a for separating the respective force transmission element 62a from the drive element 66a, preferably at an angle or at least essentially perpendicular to the pull-off direction 30a. The guide elements 82a each delimit a recess 90a, which is designed to correspond to a shape of the guide extensions 80a. The recesses 90a are each intended to receive one of the guide extensions 80a in at least one operating state, in particular for removing the rivet mandrel 26a and/or during a movement together with the force transmission elements 62a in the removal direction 30a, at least for the most part, in particular at least essentially completely. Viewed perpendicularly to the central axis 32a of the pull-off unit 16a (cf. FIG. 1), the guide projections 80a each have an at least essentially wedge-shaped basic shape, with a tip of the at least essentially wedge-shaped basic shape pointing in the reset direction 58a. The guide extensions 80a, in particular the at least essentially wedge-shaped basic shape of the individual guide extensions 80a, each have an end of the guide extensions 80a embodied in the removal direction 30a that is embodied at least essentially perpendicularly to the removal direction 30a, which is provided in particular to enable a movement of the guide extensions 80a in an arrangement in the recesses 90a of the guide elements 82a. The recesses 90a delimited by the guide elements 82a each have a basic shape, viewed perpendicularly to the central axis 32a of the pull-off unit 16a (cf. FIG. 1), which is essentially identical to the basic shape of the individual guide extensions 80a.

Restoring unit 18a includes a restoring element 92a, which is provided for pulling puller elements 46a and force transmission elements 62a together via base body 52a of puller unit 16a to at least essentially automatically reset puller elements 46a and force transmission elements 62a into the basic position in one of pull-off direction 30a to apply a restoring force in the opposite direction, in particular in the reset direction 58a. The reset element 92a is preferably provided to move the pull-off elements 46a and the force-transmitting elements 62a together via the restoring force in the reset direction 58a after the force-transmitting elements 62a have been separated from the drive element 66a for resetting via the main body 52a of the pull-off unit 16a. In particular, the restoring force of the restoring element 92a counteracts a force transmitted via the threads 64a, 68a in the pull-off direction 30a when the rivet mandrel 26a is pulled off. The restoring element 92a is designed as a compression spring. The restoring element 92a is in the center when viewed in the removal direction 30a the central axis 32a of the peeling unit 16a is arranged. The return element 92a is arranged around the drive element 66a. The restoring unit 18a comprises two further restoring elements 94a (see also Figures 2 to 6), which are intended to apply a restoring force to the two force transmission elements 62a to separate them from the drive element 66a away from the center axis 32a of the pull-off unit 16a, wherein in particular a Applying the power transmission elements 62a to the drive element 66a takes place against the restoring force. The two further restoring elements 94a are each designed as compression springs and are arranged between the two force transmission elements 62a. In particular, the two further restoring elements 94a extend perpendicular to the pull-off direction 30a from one of the two force transmission elements 62a to the other of the two force transmission elements 62a. The two force transmission elements 62a each delimit two receptacles 96a (see FIG. 2), which are provided to hold the further restoring elements 94a in an arrangement on or between the two force transmission elements 62a. It is conceivable that the two further restoring elements 94a are each fastened, for example glued, to the two further restoring elements 94a, in particular within the receptacles 96a. The two further restoring elements 94a are provided to apply a restoring force to the two force transmission elements 62a in two opposite directions directed away from the central axis 32a of the pull-off unit 16a and/or away from the drive element 66a. The two further restoring elements 94a are arranged on two sides facing away from one another relative to the central axis 32a of the pull-off unit 16a and/or relative to the drive element 66a. In particular, one of the further restoring elements 94a is arranged on each side of the drive element 66a and/or the central axis 32a of the pull-off unit 16a between the two force transmission elements 62a. The guide unit 76a, in particular the guide surfaces 78a and the further guide surfaces 84a, is intended to hold the two force transmission elements 62a on the drive element 66a for movement in the removal direction 30a driven by the drive element 66a against the restoring force of the further restoring elements 94a. The two further reset elements 94a are preferably provided to separate the two force transmission elements 62a from the drive element 66a for resetting in the reset direction 58a and preferably to keep them spaced apart from the drive element 66a until a basic position is reached. the two further restoring elements 94a are provided to apply the restoring force to the two force transmission elements 62a, each with an axis 72a aligned at least substantially perpendicular to the pull-off direction 30a and/or to the central axis 32a of the pull-off unit 16a and/or the drive element 66a. The two force transmission elements 62a are intended to be pushed apart by the restoring force of the two further restoring elements 94a, in particular along axis 72a, which is oriented at least substantially perpendicular to pull-off direction 30a and/or to central axis 32a of pull-off unit 16a and/or drive element 66a , in particular to an interaction of the guide surfaces 78a and the further guide surfaces 84a.

The force transmission elements 62a are intended to be separated from the drive element 66a when the guide extensions 80a are received in the recesses 90a delimited by the guide elements 82a, preferably via the restoring force of the further restoring elements 94a. The guide elements 82a and the two force transmission elements 62a, in particular the guide extensions 80a, are preferably designed and/or arranged in such a way that when the guide extensions 80a are received in the recesses 90a delimited by the guide elements 82a, in particular via the bearing guides 74a, the force transmission elements 62a can be moved a greater distance obliquely or at least substantially perpendicularly to pull-off direction 30a relative to drive element 66a, as with an arrangement of force transmission elements 62a on guide elements 82a outside of recesses 90a, with guide extensions 80a each being arranged outside of recesses 90a delimited by guide elements 82a are (cf. Figures 4 and 5). The two guide elements 82a are preferably provided to be moved relative to the force transmission elements 62a when interacting with one of the stops 86a in such a way that the guide extensions 80a are each moved into the recess 90a, in particular via the restoring force of the further restoring elements 94a ( see FIG. 5), the two force transmission elements 62a preferably being separated from the drive element 66a at an angle or perpendicular to the pull-off direction 30a. The guide elements 82a are provided to interact with the further stops 88a in such a way relative to the force transmission elements 62a so that the guide projections 80a are moved out of the recesses 90a, in particular counter to the restoring force of the further restoring elements 94a and/or via the further guide surfaces 84a, with the two force transmission elements 62a preferably being inclined or perpendicular to the pull-off direction 30a on the Drive element 66a are created. When the guide elements 82a interact with the additional stops 88a, the two force transmission elements 62a are intended to be moved via the resetting element 92a relative to the guide elements 82a in the resetting direction 58a, with the guide extensions 80a in particular being moved via the additional guide surfaces 84a arranged on the guide elements 82a of the guide unit 76a can be moved out of the recesses 90a. The two force transmission elements 62a are intended to be moved against the restoring force of the further restoring elements 94a in the direction of the drive element 66a when the guide projections 80a are moved out of the recesses 90a, with the two force transmission elements 62a preferably contacting the drive element 66a by moving towards one another will. The two force transmission elements 62a are intended to be moved in the pull-off direction 30a, driven by the two pull-off elements 46a via the drive element 66a, after they have come into contact with the drive element 66a in order to pull off a rivet mandrel 26a. In particular, a drive force of the rotating drive element 66a is converted via the two force transmission elements 62a, in particular the threads 64a, 68a, into a force directed in the pull-off direction 30a and transmitted to the two pull-off elements 46a. In particular, the two guide elements 82a, viewed along the central axis 32a of the pull-off unit 16a, are each arranged on a side of one of the force transmission elements 62a that faces away from the central axis 32a.

Actuating element 44a is intended to interact with socket 50a and main body 52a of extraction unit 16a in at least one operating state to reset extraction elements 46a and force transmission elements 62a into the basic position, with the two extraction elements 46a and the two force transmission elements 62a in particular being in the extraction direction 30a are moved. The return element 92a is preferably provided for the purpose of holding the receiving element 42a/actuating element 44a when closing reset, in particular after a removal process, to move in the reset direction 58a into an, in particular unactuated, basic state. Pull-off unit 16a and return unit 18a are designed in such a way that the drive element 66a transfers the drive force to the two pull-off elements 46a of pull-off unit 16a and at least essentially automatically resets the pull-off elements 46a to the ready-to-take state or the basic position and the force-transmitting elements 62a to the basic position done purely mechanically. Preferably, the rivet attachment device 10a does not include any electrical and/or electronic components. In particular, in one configuration of the drive unit of the machine tool 12a as an electric motor, only the drive force made available by the machine tool 12a is generated electrically.

The pull-off unit 16a has a pull-off path 98a, along which the two pull-off elements 46a move with a rivet mandrel 26a that is positively and/or non-positively connected to the pull-off elements 46a in order to pull off the rivet mandrel 26a. The pull-off section 98a is preferably at least essentially rectilinear. The pull-off distance 98a is aligned at least essentially parallel to the pull-off direction 30a and/or to the central axis 32a of the pull-off unit 16a. In the ready-to-take state, the pull-off elements 46a are arranged at an end of the pull-off path 98a that is opposite to the pull-off direction 30a (cf. FIG. 1). The pull-off elements 46a are preferably provided to be moved along the pull-off path 98a in the pull-off direction 30a in order to pull off the rivet mandrel 26a together with the rivet mandrel 26a positively and/or non-positively connected to the pull-off elements 46a.

The base body 52a of the pull-off unit 16a delimits two guide receptacles 100a for the movable mounting of the two guide elements 82a, each along an axis aligned parallel to the central axis 32a of the pull-off unit 16a (see also FIG. 2). The base body 52a of the pull-off unit 16a delimits a receiving recess 102a for the restoring element 92a, which is formed around the central axis 32a of the pull-off unit 16a. The receiving recess 102a and the restoring element 92a arranged therein are preferably at a distance from the bearing guides 74a and the two force transmission elements 62a arranged. The restoring element 92a is preferably inserted between the base body 52a, in particular the receiving recess 102a, and the drive element 66a. However, it is also conceivable for the return element 92a to be attached to the base body 52a of the pull-off unit 16a, in particular via the receiving recess 102a, for example via a welded or adhesive connection.

The rivet attachment device 10a comprises a feed 104a, which is provided for guiding rivet mandrels 26a, which have been pulled off via the pull-off unit 16a and which, in particular, have been completely drawn in by the fixing unit 20a in the pull-off direction 30a, from a position on the central axis 32a of the pull-off unit 16a into the collection container 24a . The feed 104a is designed in particular as a channel delimited by the housing 22a, which extends from the central axis 32a of the extraction unit to the collection container 24a. The pull-off unit 16a is provided to output the rivet mandrel 26a into the feed 104a after the rivet mandrel 26a has been pulled off. The main body 52a of the pull-off unit 16a delimits an opening 106a for dispensing the rivet mandrel 26a after the rivet mandrel 26a has been pulled off. Pull-off unit 16a is preferably provided to release rivet mandrel 26a from pull-off elements 46a after rivet mandrel 26a has been pulled off by moving pull-off elements 46a apart, with the rivet mandrel, preferably by gravity, passing through opening 106a via feed 104a into the collection container 24a falls. Alternatively or additionally, it is conceivable that the rivet attachment device 10a comprises at least one actuator element, for example a spring or a compressed air element or the like, which is intended to a pulled off rivet mandrel 26a, for example depending on a position of the rivet mandrel 26a along the central axis 32a of the pull-off unit 16a, via a force in the direction of the collecting container 24a or into the collecting container 24a. The opening 106a delimited by the base body 52a of the pull-off unit 16a is arranged at a distance from the central axis 32a of the pull-off unit 16a. The opening 106a delimited by the base body 52a of the extraction unit 16a is preferably arranged relative to the central axis 32a of the extraction unit 16a in a direction radial to the central axis 32a of the extraction unit 16a and facing the collection container 24a. The feed 104a preferably extends at least obliquely, in particular at an angle of more than 8°, to the central axis 32a of the pull-off unit. unit 16a, preferably from the central axis 32a of the stripping unit 16a towards the collection container 24a. The collection container 24a includes a removal opening 108a for emptying the collection container 24a. In particular, the rivet attachment device 10a comprises at least one closure element for opening and closing the removal opening 108a (not shown in figures). Alternatively or additionally, it is conceivable that the collection container 24a is arranged at least partially or centrally on the central axis 32a of the pull-off unit 16a.

FIG. 2 shows an exploded sketch of the rivet attachment device 10a. In particular, the collection container 24a and the feed 104a are not shown in FIG. The rivet attachment device 10a comprises an output unit 110a for optical output of a position of the pull-off unit 16a, in particular of the force transmission elements 62a, along the pull-off direction 30a. The output unit 110a is provided to indicate to a user the position of the pull-off unit 16a and the restoring unit 18a along the pull-off direction 30a via the force transmission elements 62a and the base body 52a of the pull-off unit 16a. The dispensing unit 110a is formed in one piece with the housing 22a, in particular a housing outer wall 112a of the housing 22a, of the rivet attachment device 10a. The output unit 110a includes two viewing passages 114a, which are delimited by the housing 22a, in particular the housing outer wall 112a, on an upper side of the rivet attachment device 10a. Alternative configurations of the dispensing unit 110a are also conceivable, for example on a side wall 116a, with a different number of two viewing passages 114a or the like. The viewing passages 114a are arranged such that at least one of the force transmission elements 62a and at least partially the base body 52a of the pull-off unit 16a are visible in an arrangement on the drive element 66a from the outside, in particular from outside the rivet attachment device 10a, for a user of the rivet attachment device 10a. The two viewing passages 114a are arranged one behind the other in the peeling-off direction 30a. The two viewing passages 114a are each configured at least essentially in the form of a slot. The viewing passages 114a each extend along the pull-off direction 30a at least largely over a region of the external thread 68a of the drive element 66a, the force transmission element 62a at least in one arrangement on a front part and on a rear part of the external thread 68a of the drive selements 66a is visible from the outside. Other configurations of the output unit 110a are also conceivable, for example as an alternative or in addition to a haptic and/or acoustic output and/or to an output of a position of the pull-off elements 46a. It is conceivable that the output unit 110a comprises at least one at least partially transparent viewing window, which at least largely, in particular completely, covers and/or fills one of the viewing passages 114a or both viewing passages 114a. In particular, the viewing window is provided to protect the pull-off unit 16a and/or the reset unit 18a from foreign bodies, such as dirt or the like, penetrating through the viewing passage 114a into the rivet attachment device 10a.

The socket 50a is formed in two parts, with the pull-off elements 46a being arranged within a part of the socket 50a which is at the front in the reset direction 58a. The socket 50a is connected to the base body 52a of the pull-off unit 16a via a screw connection. The fixing unit 20a includes a sleeve 118a, which is connected to the actuating element 42a or the receiving element 42a. The sleeve 118a at least essentially completely encloses the socket 50a and the pull-off elements 46a around the central axis 32a of the pull-off unit 16a. The sleeve 118a of the fixing unit 20a forms two extensions 120a, which are movably mounted within the housing 22a along an axis aligned parallel to the central axis 32a of the pull-off unit 16a. In particular, the sleeve 118a is designed to be non-rotatable about the central axis 32a of the pull-off unit 16a via the two extensions 120a. The rivet attachment device 10a comprises two spring elements 122a, which are provided to apply a restoring force to the sleeve 118a together with the receiving element 42a and the actuating element 44a via the extensions 120a in the reset direction 58a. The two spring elements 122a are preferably provided to move the fixing unit 20a into a basic position in the reset direction 58a after a rivet mandrel 26a has been removed and/or after it has been actuated by a user. The rivet attachment device 10a comprises two threaded inserts 124a, which are provided for supporting one of the spring elements 122a in each case. In particular, the threaded inserts 124a are arranged on an internal thread 64a formed by the housing 22a and can each be moved via the internal thread 64a along an axis aligned parallel to the central axis 32a of the pull-off unit 16a. In particular, via the thread sets 124a a restoring force for the fixing unit 20a can be set. The spring elements 122a are preferably arranged between the extensions 120a and the threaded inserts 124a. In particular, the extensions 120a, the spring elements 122a, the threaded inserts 124a and/or the internal threads 64a are arranged on opposite sides of the central axis 32a of the pull-off unit 16a, the restoring unit 18a and/or the base body 52a of the pull-off unit 16a. The extensions 120a, the spring elements 122a, the threaded inserts 124a and/or the internal threads 64a are preferably arranged on inner sides of the housing 22a facing one another. Preferably, the extensions 120a, the spring elements 122a, the threaded inserts 124a and/or the internal threads 64a are spaced from the underside and the top of the rivet attachment device 10a, preferably spaced from the dispensing unit 110a or the collection container 24a, the feed 104a and the opening 106a, arranged, in particular on the two side walls 116a of the housing 22a.

The guide extensions 80a preferably each have a maximum longitudinal extent 126a of at least 1 cm, preferably at least 1.5 cm and preferably at least 2 cm. In particular, the maximum longitudinal extension 126a of the guide extensions 80a is aligned perpendicular to the central axis 32a of the pull-off unit 16a and/or at least essentially perpendicular to a possible movement path of the force transmission elements 62a for separating from the drive element 66a or for contact with the drive element 66a. In particular, the guide elements 82a each delimit a stop surface 128a in the reset direction 58a for interaction with one of the other stops 88a, wherein the stop surfaces 128a each have a greater maximum transverse extent perpendicular to the central axis 32a of the pull-off unit 16a than a central transverse extent of the guide element 82a on which the respective stop surface 128a is arranged. The maximum longitudinal extent 126a of the guide extensions 80a is greater than a maximum longitudinal extent 130a of the individual recesses 90a delimited by the guide elements 82a. The maximum longitudinal extension 130a of the individual recesses 90a delimited by the guide elements 82a is preferably at least 0.25 cm, preferably at least 0.5 cm and preferably at least 1 cm. The two guide receptacles 100a delimited by the base body 52a of the pull-off unit 16a for the movable mounting of the two guide elements 82a each intersect with one of the bearing guides 74a of the bearing unit 70a delimited by the base body 52a. In particular, the guide elements 82a are provided to limit a movement of one of the force transmission elements 62a within one of the bearing guides 74a that is directed away from the drive element 66a. In particular, the bearing guides 74a, the guide elements 82a, the stops 86a and/or the further stops 88a, viewed along the center axis 32a of the pull-off unit 16a, have a greater radial distance from the center axis 32a of the pull-off unit 16a than the individual pull-off elements 46a, the connecting piece 50a and / or the internal thread 64a of the force transmission elements 62a. The base body 52a, the socket 50a, the pull-off elements 46a, the force-transmitting elements 62a, the further restoring elements 94a and the guide elements 82a are designed together as a preassembled assembly. In particular, the base body 52a, the connecting piece 50a, the pull-off elements 46a, the force transmission elements 62a, the further restoring elements 94a and the guide elements 82a can be removed together from the housing 22a during disassembly and/or maintenance or together in the housing 22a during assembly be installed, preferably in a fixed arrangement together.

The connection unit 28a includes in particular a bearing for a rotatable arrangement of the drive element 66a. The connection unit 28a comprises at least one fastening element for a non-rotatable arrangement of the rivet attachment device 10a on the machine tool 12a. Connecting unit 28a is preferably provided to convert and/or transmit a drive force provided by machine tool 12a, in particular an output element of machine tool 12a, into a rotational movement of drive element 66a about central axis 32a of puller unit 16a and/or drive element 66a .

The housing 22a has a grip element 132a on each of the two side walls 116a, each of which is designed in particular as a soft-grip grip piece. The handle elements 132a are preferably each provided for a user to hold the rivet attachment device 10a. Preferably is the rivet attachment device 10a is intended to be encompassed by the gripping elements 132a during a riveting process. Other configurations of the grip elements 132a and/or a different number of grip elements 132a from two are also conceivable.

In Figures 3 to 6, a movement sequence of puller unit 16a and restoring unit 18a, in particular force transmission elements 62a and guide elements 82a together with base body 52a of puller unit 16a, is shown for pulling off a rivet mandrel 26a held in place by puller elements 46a in puller direction 30a in a Riveting process shown. FIG. 1 shows the basic position of the pull-off elements 46a and the force transmission elements 62a, with the pull-off elements 46a being arranged in the ready-to-take state. When the operating element 44a is actuated by a user, with the rivet attachment device 10a being pressed via the operating element 44a on a workpiece to be riveted in a direction parallel to the reset direction 58a, the connecting piece 50a, the base body 52a and the guide elements 82a and the force transmission elements 62a relative to the drive element 66a and/or the housing 22a in the removal direction 30a, with the force transmission elements 62a preferably being brought into engagement with the drive element 66a, in particular the external thread 68a, via the internal thread 64a (see FIG. 3). The actuating element 44a is provided to move the force transmission elements 62a when actuated from the basic position of the force transmission elements 62a in the removal direction 30a to the drive element 66a, the force transmission elements 62a being brought into engagement with the drive element 66a for a driven removal movement. The drive element 66a is provided for the purpose, after the force transmission elements 62a have been brought into engagement with the drive element 66a, via a rotation by means of the external thread 68a and the internal thread 64a, to rotate the connecting piece 50a, the base body 52a and the guide elements 82a and the force transmission elements 62a relative to the drive element 66a and/or or to move the housing 22a in the peeling direction 30a. In particular, during the driven movement of the force transmission elements 62a in the stripping direction 30a, a force in the stripping direction 30a is transmitted from the force transmission elements 62a via the base body 52a and the socket 50a to the two stripping elements 46a. The stripping elements 46a are intended to act on a rivet mandrel 26a arranged on the central axis 32a of the extraction unit 16a during a movement in the removal direction 30a and to remove this during a movement of the force transmission elements 62a along the internal thread 64a, with the rivet mandrel 26a in particular being separated from a base body 52a of a rivet blank, in particular demolished.

FIG. 4 shows the force transmission elements 62a in a position on the drive element 66a after the rivet mandrel 26a has been pulled off. The power transmission elements 62a are via the internal thread 64a in the removal direction 30a along the external thread 68a of the drive element 66a. During the driven movement in the removal direction 30a, the guide elements 82a are moved to the stops 86a and interact with them. The force transmission elements 62a and the base body 52a of the pull-off unit 16a move further in the pull-off direction 30a relative to the guide elements 82a, with the recesses 90a delimited by the guide elements 82a moving in particular in the direction of the guide projections 80a relative to the force transmission elements 62a. When the guide extensions 80a with the recesses 90a move over one another along the central axis 32a of the puller unit 16a, the force transmission elements 62a are moved by means of the further restoring elements 94a via the guide extensions 80a obliquely or at least essentially perpendicularly to the pull-off direction 30a into the recesses 90a, with the force transmission elements 62a be separated from the drive element 66a (see FIG. 5).

After separating the force transmission elements 62a from the drive element 66a, the internal thread 64a and the external thread 68a are separated from one another, with in particular no more force being transmitted from the drive element 66a to the force transmission elements 62a. The restoring element 92a is preferably provided to move the force transmission elements 62a, the pull-off elements 46a, the connecting piece 50a and the base body 52a via the base body 52a in the reset direction 58a after the force transmission elements 62a have been separated from the drive element 66a. The position of the guide elements 82a relative to the force transmission elements 62a and the The base body 52a is held by the guide projections 80a and the recesses 90a when it is reset.

The force transmission elements 62a, the pull-off elements 46a, the socket 50a and the base body 52a are moved in the reset direction 58a by the restoring force of the restoring element 92a until the stop surfaces 128a of the guide elements 82a interact with the other stops 88a. In particular, when the guide elements 82a interact with the further stops 88a, the guide elements 82a are moved relative to the force transmission elements 62a and the base body 52a, which in particular move further in the reset direction 58a. When moving in reset direction 58a, guide extensions 80a are moved relative to guide elements 82a via guide surfaces 78a and the additional guide surfaces 84a out of recesses 90a, with force transmission elements 62a moving along each additional guide surface 84a against the restoring force of the additional reset elements 94a in the direction of the Drive element 66a are moved, in particular towards each other. When the force transmission elements 62a move towards one another, the force transmission elements 62a are arranged next to one another, the internal threads 64a of the two force transmission elements 62a together forming an internal thread 64a that completely encloses the central axis 32a of the pull-off unit 16a. The force transmission elements 62a and the base body 52a are moved in the reset direction 58a until the base body 52a strikes the guide elements 82a, which bear against the further stops 88a, with the force transmission elements 62a and the pull-off elements 46a assuming a basic position (cf. Figure 1). In particular, the pull-off elements 46a are in the ready-to-take state. By separating the drive element 66a and resetting the force transmission elements 62a at a distance from the drive element 66a, it is possible to reset the force transmission elements 62a and the pull-off elements 46a at least essentially independently, with another riveting process being possible in particular after a riveting process without the intervention of a User can be enabled.

Further exemplary embodiments of the invention are shown in FIGS. The following descriptions and drawings are limited to Basically, the differences between the exemplary embodiments refer to the drawings and/or the description of the other exemplary embodiments, in particular FIGS. To distinguish between the exemplary embodiments, the letter a follows the reference number of the exemplary embodiment in FIGS. In the exemplary embodiments of FIGS. 7 to 12, the letter a has been replaced by the letters b to g.

FIG. 7 shows a first alternative embodiment of a rivet cap device 10b with an alternative resetting device 14b. The restoring device 14b comprises a pull-off unit 16b for pulling off a rivet mandrel 26b, wherein the pull-off unit 16b comprises two pull-off elements 46b for engaging the rivet mandrel 26b in a positive and/or non-positive manner. The pull-off unit 16b comprises two power transmission elements 62b, which are provided for the transmission of a drive force for pulling off the rivet mandrel 26b from a drive element 66b of the rivet attachment device 10b to the pull-off elements 46b. The resetting device 14b comprises a resetting unit 18b, which is provided for the purpose of pulling off the puller elements 46b and the force transmission elements 62b after the rivet mandrel 26b has been pulled off in order to carry out a further riveting process, in particular in each case at least essentially independently, in particular without a change in a drive direction of the drive element 66b , to reset to a basic position. The rivet attachment device 10b shown in Figure 7 has an at least essentially analogous design to the rivet attachment device 10a described in the description of Figures 1 to 6, so that with regard to an embodiment of the rivet attachment device 10b shown in Figure 7, at least essentially the description of the figures 1 to 6 can be referred to. In contrast to the rivet attachment device 10a described in the description of Figures 1 to 6, the two force transmission elements 62b of the puller unit 16b of the rivet attachment device 10b shown in Figure 7 are preferably rotatably arranged on a base body 52b of the puller unit 16b that is movable along a pull-off direction 30b. The reset unit 18b is provided for the purpose of using the two force transmission elements 62b to reset the pull-off elements 46b and the force transmission elements 62b into the basic position at least temporarily, in particular during a movement into the basic position, to be separated from the drive element 66b. The force transmission elements 62b can each be moved about a pivot axis 140b in order to separate from the drive element 66b. The force transmission elements 62b each form a guide surface 78b, which is arranged on a side of the respective force transmission element 62b that faces away from the drive element 66b. The guide surfaces 78b are each intended to interact with a further guide surface 84b, which is arranged on an actuating element 44b of a fixing unit 20b of the restoring device 14b, which is movably mounted along the central axis of the pull-off unit 32b. The actuating element 44b is designed to be spring-loaded against movement in the removal direction 30b via a spring element 142b arranged between the actuating element 44b and the housing 22b. The spring element 142b is designed in particular as a compression spring. The actuating element 44b is intended to be moved in the pulling-off direction 30b relative to the pull-off unit 16b, to the housing 22b and/or to the return unit 18b when actuated by a user, in particular when the actuating element 44b is pressed against a workpiece. Actuating element 44b is provided to interact with force-transmitting elements 62b to reset pull-off elements 46b and force-transmitting elements 62b into the basic position, with guide surfaces 78b in particular being released from the further guide surfaces 84b for separating force-transmitting elements 62b from drive element 66b. The force transmission elements 62b are shown in FIG. 7 in the basic position. If the actuating element 44b is actuated and moved in the removal direction 30b relative to the housing 22b, the base body 52b and the force transmission elements 62b, the force transmission elements 62b via the guide surfaces 78b and the further guide surfaces 84b about the pivot axis 140b are used to transmit a driving force for removing the rivet mandrel 26b moves to the drive element 66b. The two force transmission elements 62b each delimit a bearing recess 143b for a movable bearing on a bearing pin 144b of a bearing unit 70b of the restoring device 14b, which is arranged in particular on the base body 52b. In particular, the restoring unit 18b comprises at least one further restoring element 94b, which is provided for separating the two force transmission elements 62b from the drive element 66b from the drive element 66b and/or the central axis 32b of the pull-off unit 16b away with a restoring force. For example, the at least one further restoring element 94b is designed as a compression spring, in particular analogously to FIGS.

FIG. 8 shows a second alternative embodiment of a rivet cap device 10c with an alternative resetting device 14c. The restoring device 14c comprises a pull-off unit 16c for pulling off a rivet mandrel 26c, wherein the pull-off unit 16c comprises two pull-off elements 46c for engaging the rivet mandrel 26c in a positive and/or non-positive manner. The pull-off unit 16c comprises two power transmission elements 62c, which are provided for the transmission of a driving force for pulling off the rivet mandrel 26c from a drive element 66c of the rivet attachment device 10c to the pull-off elements 46c. The resetting device 14c comprises a resetting unit 18c, which is provided for the purpose of using the pull-off elements 46c and the force transmission elements 62c to carry out a further riveting process after the rivet mandrel 26c has been pulled off, in particular in each case at least essentially independently, in particular without a change in a drive direction of the drive element 66c , to reset to a basic position. The resetting unit 18c is provided to separate the two force transmission elements 62c from the drive element 66c at least temporarily, in particular during a movement into the normal position, in order to reset the pull-off elements 46c and the force transmission elements 62c into the basic position. The rivet attachment device 10c shown in Figure 8 has an at least essentially analogous design to the rivet attachment device 10a described in the description of Figures 1 to 6, so that with regard to an embodiment of the rivet attachment device 10c shown in Figure 8, at least essentially the description of the figures 1 to 6 can be referred to. In contrast to the rivet attachment device 10a described in the description of Figures 1 to 6, the two force transmission elements 62c of the puller unit 16c of the rivet attachment device 10c shown in Figure 7 are rotatably mounted relative to a base body 52c of the puller unit 16c, preferably analogously to those described in Figure 7 Power transmission elements 62c. The pull-off unit 16c includes a restoring element 146c, which is provided for the purpose of counteracting the two force transmission elements 62c when they are separated from the drive element 66c to apply a restoring force to a movement of the drive element 66c. In particular, the restoring element 146c is designed as a rubber ring, which encloses the two force transmission elements 62c viewed along a central axis 32c of the pull-off unit 16c. However, other configurations of the restoring element 146c are also conceivable, for example as a tension spring or the like arranged between the two force transmission elements 62c. Resetting device 14c includes a guide unit 76c, which is provided for separating or disengaging force-transmitting elements 62c from drive element 66c, depending on a position of force-transmitting elements 62c along an axis aligned parallel to stripping direction 30c, in particular along central axis 32c of stripping unit 16c. to apply to the drive member 66c. The guide unit 76c comprises two guide links 150c delimited by a housing 22c of the rivet attachment device 10c and/or the resetting device 14c, which specify a closed guide path for each of the force transmission elements 62c (only one guide link 150c is shown in FIG. 8). The guide unit 76c is provided to move the two force transmission elements 62c about the pivot axis 140c depending on a position of the individual force transmission elements 62c along the central axis 32c of the pull-off unit 16c relative to the guide link 150c guiding the respective force transmission element 62c. When an end 152c of an external thread 68c of the drive element 66c, configured in the pull-off direction 30c, is reached via the guide links 150c, the force transmission elements 62c are rotated about the pivot axis 140c in order to separate from the drive element 66c in a direction away from the drive element 66c and/or the central axis 32c of the pull-off unit 16c moves, in particular the internal thread 64c of the force transmission elements 62c is separated from the external thread 68c of the drive element 66c. The guide unit 76c comprises a guide extension 154c which is arranged around the drive element 66c and is intended to lift the force transmission elements 62c off the drive element 66c when the end 152c of the external thread 68c of the drive element 66c configured in the removal direction 30c is reached. Alternatively, it is conceivable that the guide unit 76c comprises, for example, two guide extensions 154c arranged on an upper side and on an underside of the drive element 66c. The force transmission elements 62c are moved via the guide links 150c when a reset direction is reached 58c formed end 156c of the external thread 68c of the drive element 66c to apply the force transmission elements 62c to the drive element 66c in a direction facing the drive element 66c and/or the central axis of the pull-off unit 16c about a pivot axis 140c of the respective force transmission element 62c. It is also conceivable that the guide links 150c are formed around the central axis 32c of the pull-off unit 16c and are in particular formed differently from a configuration in one plane, preferably by the housing 22c surrounding the pull-off unit 16c and/or the restoring unit 18c. In particular, a restoring element 92c of the restoring unit 18c is only partially shown in FIG. 8 for a better view of the connecting link guide 150c.

FIG. 9 shows a third alternative embodiment of a rivet cap device 10d with an alternative resetting device 14d. The restoring device 14d comprises a pull-off unit 16d for pulling off a rivet mandrel 26d, wherein the pull-off unit 16d comprises two pull-off elements 46d for engaging the rivet mandrel 26d in a positive and/or non-positive manner. The pull-off unit 16d comprises two power transmission elements 62d, which are provided for the transmission of a driving force for pulling off the rivet mandrel 26d from a drive element 66d of the rivet attachment device 10d to the pull-off elements 46d. The resetting device 14d comprises a resetting unit 18d, which is provided for the purpose of pulling the puller elements 46d and the force transmission elements 62d after the rivet mandrel 26d has been pulled off in order to carry out a further riveting process, in particular in each case at least essentially independently, in particular without a change in a drive direction of the drive element 66d , to reset to a basic position. The resetting unit 18d is provided to separate the two force transmission elements 62d from the drive element 66d at least temporarily, in particular during a movement into the normal position, in order to reset the pull-off elements 46d and the force transmission elements 62d into the basic position. The rivet attachment device 10d shown in Figure 9 has an at least essentially analogous design to the rivet attachment device 10a described in the description of Figures 1 to 6, so that with regard to an embodiment of the rivet attachment device 10d shown in Figure 9, at least essentially the description of the figures 1 to 6 can be referred to. In the difference to the rivet attachment device 10a described in the description of Figures 1 to 6, guide elements 82d of a guide unit 76d of the resetting device 14d of the rivet attachment device 10d shown in Figure 9 are movably mounted relative to the force transmission elements 62d, preferably via rollers or balls 158d of the guide unit 76d. The guide unit 76d includes two further stops 88d, which are arranged on an actuating element 44d of a fixing unit 20d of the restoring device 14d. When actuated by a user, in particular when actuating element 44d is pressed against a workpiece, actuating element 44d is preferably intended to be moved relative to stripping unit 16d and/or to reset unit 18d in a stripping direction 30d, with the further stops 88d being connected to the guide elements 82d cooperation. If the force transmission elements 62d are moved in the pull-off direction 30d along the drive element 66d, the guide elements 82d move along a central axis 32d of the pull-off unit 16d in such a way that the rollers or balls 158d move beyond a guide surface 78d of the force transfer elements 62d, with the two force transfer elements 62d moving over two further restoring elements 94d are moved away from the drive element 66d and/or the central axis 32d of the pull-off unit 32d obliquely or at least essentially perpendicularly to the central axis 32d of the pull-off unit 32d to separate them. In particular, the guide elements 82d are guided via the rollers or balls 158d in a state at a distance from the force transmission elements 62d on a base body 52d of the pull-off unit 16d. The rollers or balls 158d preferably replace, in particular functionally, the guide projections 80a and the recesses 90a of the restoring device 14a described in FIGS. 1 to 6.

FIG. 10 shows a fourth alternative embodiment of a rivet cap device 10e with an alternative resetting device 14e. The restoring device 14e comprises a pull-off unit 16e for pulling off a rivet mandrel 26e, wherein the pull-off unit 16e comprises two pull-off elements 46e for engaging the rivet mandrel 26e in a positive and/or non-positive manner. The pull-off unit 16e includes two power transmission elements 62e, which are provided to transfer a driving force for pulling off the rivet mandrel 26e from a drive element 66e of the rivet attachment device 10e to the pull-off elements 46e. see are. The resetting device 14e comprises a resetting unit 18e, which is provided for the purpose of using the puller elements 46e and the force transmission elements 62e to carry out a further riveting process after the rivet mandrel 26e has been pulled off, in particular in each case at least essentially independently, in particular without a change in a drive direction of the drive element 66e , to reset to a basic position. The resetting unit 18e is provided for separating the two force transmission elements 62e from the drive element 66e at least temporarily, in particular during a movement into the normal position, for resetting the pull-off elements 46e and the force transmission elements 62e into the basic position. The rivet attachment device 10e shown in Figure 10 has an at least essentially analogous design to the rivet attachment device 10a described in the description of Figures 1 to 6, so that with regard to an embodiment of the rivet attachment device 10e shown in Figure 10, at least essentially the description of the figures 1 to 6 can be referred to. In contrast to the rivet attachment device 10a described in the description of Figures 1 to 6, the resetting device 14e of the rivet attachment device 10e shown in Figure 10 is preferably semi-automatic, with in particular an at least essentially resetting of the force transmission elements 62e and the pull-off elements 46e only after actuation of a Actuating element 160e of the resetting device 14e takes place. The actuating element 160e is arranged on an outer wall of a housing 22e of the rivet attachment device 10e and/or the reset device 14e. One of the force transmission elements 62e is guided along a central axis 32e of the pull-off unit 16e on a guide element 82e of a guide unit 76e of the restoring device 14e. Actuating element 160e is wedge-shaped on a side facing force transmission elements 62e and is intended to separate force transmission elements 62e from drive element 66e when actuated by a user, with force transmission elements 62e and pull-off elements 46e being reset via a reset element 92e of reset unit 18e he follows. In particular, the force transmission elements 62e can be pivoted about the guide element 82e via the actuating element 160e in order to separate them from the drive element 66e. When the user releases the actuating element 160e, the force-transmitting elements 62e are placed back against the drive element 66e. Another restoring element 146e of restoring unit 18e is provided to apply a restoring force to the two force transmission elements 62e along an axis 72e that is aligned at least substantially perpendicularly to central axis 32e of pull-off unit 16e toward central axis 32e and/or drive element 66e, preferably by the To apply power transmission elements 62e to the drive element 66e.

FIG. 11 shows a fifth alternative embodiment of a rivet attachment device 10f with an alternative restoring device 14f. The restoring device 14f comprises a pull-off unit 16f for pulling off a rivet mandrel 26f, wherein the pull-off unit 16f comprises two pull-off elements 46f for engaging the rivet mandrel 26f in a positive and/or non-positive manner. The rivet attachment device 10f shown in Figure 11 has an at least essentially analogous design to the rivet attachment device 10a described in the description of Figures 1 to 6, so that with regard to an embodiment of the rivet attachment device 10f shown in Figure 11, at least essentially the description of the figures 1 to 6 can be referred to. In contrast to the rivet attachment device 10a described in the description of Figures 1 to 6, the removal unit 16f of the rivet attachment device 10f shown in Figure 11 preferably comprises two differently designed and in particular operatively connected force transmission elements 62f, 162f, which are used to transmit a driving force for removing the Rivet mandrel 26f are provided by a drive element 66f of the rivet attachment device lOf on the pull-off elements 46f. The resetting device 14f comprises a resetting unit 18f, which is provided for the purpose of moving the puller elements 46f and the force transmission elements 62f, after the rivet mandrel 26f has been pulled off, to carry out a further riveting process, in each case at least essentially independently, in particular without changing the drive direction of the drive element 66f, into one reset home position. The reset unit 18f is provided to separate the force transmission elements 62f, 162f from the drive element 66f at least temporarily, in particular during a movement into the normal positions, in order to reset the pull-off elements 46f and the force transmission elements 62f, 162f into the basic positions. A first force transmission element 62f of the two force transmission elements 62f, 162f forms three toothings 164f, 166f, 168f which are coaxial to one another are trained. The toothings 164f, 166f, 168f arranged on the first force transmission element 62f are each on an inside of the first force transmission element that faces a central axis 32f of the puller unit 16f and/or a central axis of the first force transmission element 62f, which is arranged in particular coaxially with the central axis 32f of the puller unit 16f 62f arranged. A first toothing 164f of the three toothings 164f, 166f, 168f arranged on the first force transmission element 62f is intended to interact with a toothing 169f of the drive element 66f, with an arrangement of the first force transmission element 62f on the drive element 66f generating a driving force for pulling off the rivet mandrel 26f is transmitted via the first toothing 164f of the three toothings 164f, 166f, 168f arranged on the first force transmission element 62f. The rivet attachment device 10f and/or the restoring device 14f comprise/encloses a return drive element 170f, which is provided for transmission of a reset force directed counter to the drive force to the first force transmission element 62f. The rear drive element 170f is provided to drive a reset of the force transmission elements 62f, 162f and the pull-off elements 46f via the reset force. The rear drive element 170f and the drive element 66f are each formed as part of a planetary gear 172f. The rear drive element 170f is connected to the drive element 66f via a plurality of planet gears 174f, with the rear drive element 170f in particular acting as a sun gear. The drive element 66f is designed as a ring gear. The rear drive element 170f is intended to be moved about the central axis 32f of the pull-off unit 16f and/or the first force transmission element 62f during a drive movement of the drive element 66f counter to the drive movement. A second toothing 166f of the three toothings 164f, 166f, 168f arranged on the first force transmission element 62f is intended to interact with a toothing 176f of the rear drive element 170f, wherein the first force transmission element 62f, when interacting with the rear drive element 170f, causes a rotation about the central axis 32f of the Extraction unit 16f and/or the first force transmission element 62f is driven counter to the drive direction, preferably for resetting the extraction elements 46f. A second force-transmitting element 162f of the two force-transmitting elements 62f, 162f forms at an end formed in the pull-off direction 30f, in particular at an outer surface, a toothing 177f, which is intended to interact with a third toothing 168f of the three toothings 164f, 166f, 168f arranged on the first force transmission element 62f. In particular, the third toothing 168f of the three toothings 164f, 166f, 168f arranged on the first force transmission element 62f has a greater maximum longitudinal extension 178f along the central axis 32f of the puller unit 16f and/or the first force transmission element 62f than the first toothing 176f of the second force transmission element 162f. The second force transmission element 162f is movable along the central axis 32f of the puller unit 16f and/or the first force transmission element 62f in the third toothing 168f of the three toothings 164f, 166f, 168f arranged on the first force transmission element 62f. The second force transmission element 162f forms an external thread 180f on an end formed in a reset direction 58f, which is provided to interact with an internal thread 182f formed on a base body 52f of the pull-off unit 16f. In particular, the second force transmission element 162f is shown in FIG. 11 in section, except for the external thread 180f. In particular, the pull-off elements 46f, in particular together with a rivet mandrel 26f, and the base body 52f can be moved along the central axis 32f of the pull-off unit 16f. To pull off a rivet mandrel 46f held by the pull-off elements 46f, the base body 52f with the pull-off elements 46f is preferably moved in the pull-off direction via the external thread 180f and the internal thread 182f, with the external thread 180f being driven in the drive direction via the force transmission elements 62f, 162f and the drive element 66f , in particular the teeth 164f, 168f, 176f. The restoring device 14f includes a fixing unit 20f for receiving and fixing the rivet mandrel 26f before the rivet mandrel 26f is pulled off. The fixing unit 20f includes an actuating element 44f, which is intended to be moved in the peeling direction 30f relative to the peeling unit 16f and to the restoring unit 18f when actuated by a user, in particular when the actuating element 44f is pressed against a workpiece. The actuating element 44f is movably spring-loaded via a spring 184f on the housing 22f. In particular, the spring 184f counteracts a movement of the actuating element 44f when the actuating element 44f is actuated in the pull-off direction 30f. The actuating element 44f forms a stop 186f which is used to interact with the first force transmission element. ment 62f is provided during a movement of the actuating element 44f in the removal direction 30f. The stop 186f is provided to move the first force transmission element 62f when the actuating element 44f moves in the removal direction 30f relative to the drive element 66f in the removal direction 30f, with the first force transmission element 62f in particular being able to carry out a driven removal movement via the toothing 166f with the toothing 169f of the Drive element 66f is engaged. The restoring unit 18f includes a restoring element 92f, which is arranged between the housing 22f and the first force transmission element 62f. The restoring element 92f is provided to apply a restoring force to the first force transmission element 62f against a movement in the removal direction 30f. The reset element 92f is provided to separate the first force transmission element 62f from the drive element 66f after the actuating element 44f has been actuated, with the actuating element 44f in particular being moved in the reset direction via the spring 184f, preferably after the rivet mandrel 26f has been pulled off. The first force transmission element 62f is moved in the reset direction by the restoring force of the restoring element 92f, the first force transmission element 62f being connected to the rear drive element 170f via the second toothing 166f. The reverse drive element 170f drives the first force transmission element 62f in the opposite direction to the drive direction, with the base body 52f in particular being moved in a driven manner together with the pull-off elements 46f via the threads 180f, 182f in the reset direction. The internal thread 182f and the external thread 180f are preferably separated from one another when the basic positions of the force transmission elements 62f, 162f and the pull-off elements 46f are reached. The actuating element 44f is preferably provided for the purpose of bringing the internal thread 182f and the external thread 180f into engagement with one another when actuated in order to pull off a rivet mandrel 26f again. The pull-off unit 16f, in particular the pull-off elements 46f, is/are designed at least essentially identically to the exemplary embodiments previously described with reference to FIGS.

FIG. 12 shows a riveting machine tool 134g with a restoring device 14g. The riveting machine tool 134g includes a housing unit 136g and a drive unit 138g, which is arranged completely within the housing unit 136g. The resetting device 14g is, in particular via a drive element 66g of the drive unit 138g, firmly connected to the drive unit 138g. The restoring device 14g is arranged at least for the most part within the housing unit 136g. The reset device 14g of the riveting machine tool 134g shown in Figure 12 has an at least substantially analogous configuration to one of the reset devices 14a, 14b, 14c, 14d, 14e, 14f described in the previous exemplary embodiments, in particular Figures 1 to 11, so that with regard to an embodiment of the restoring device 14g shown in FIG. 12, at least essentially, reference can be made to the description of FIGS. In particular, the restoring device 14g is shown schematically in FIG. 12, at least partially analogously to the restoring device 14a shown in FIGS. 1 to 6.

Claims

- 57 -

Expectations

1. Reset device for a riveting machine tool (134g) or a rivet attachment device (10a; 10b; 10c; 10d; 10e; 10f), with at least one removal unit (16a; 16b; 16c; 16d; 16e; 16f) for removing a rivet mandrel (26a ; 26b; 26c; 26d; 26e; 26f), wherein the pull-off unit (16a; 16b; 16c; 16d; 16e; 16f) has at least one pull-off element (46a; 46b; 46c; 46d; 46e; 46f) to form a shaped and/or or frictionally engaging the rivet mandrel (26a; 26b; 26c; 26d; 26e; 26f), wherein the pulling unit (16a; 16b; 16c; 16d; 16e; 16f) comprises at least one force transmission element (62a; 62b;

62c; 62d; 62e; 62f, 162f), which is used to transmit a drive force for pulling off the rivet mandrel (26a; 26b; 26c; 26d; 26e; 26f) from a drive element (66a; 66b; 66c; 66d; 66e; 66f) of the riveting machine tool (134g ) or the rivet attachment device (10a; 10b; 10c; 10d; 10e; 10f) on the at least one pull-off element (46a; 46b; 46c; 46d; 46e; 46f), with at least one reset unit (18a; 18b; 18c; 18d ; 18e; 18f), which is provided for the at least one pull-off element (46a; 46b; 46c; 46d; 46e; 46f) and the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) according to a Pulling off the rivet mandrel (26a; 26b; 26c; 26d; 26e; 26f) to carry out a further riveting process, in particular in each case, at least essentially independently, in particular without a change in a drive direction of the drive element (66a; 66b; 66c; 66d; 66e; 66f) to a basic position, characterized in that the reset unit (18a; 18b; 18c; 18d ; 18e; 18f) is provided for the purpose of using the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) to reset the at least one pull-off element (46a; 46b; 46c; 46d; 46e; 46f) and the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) into the basic position(s) at least temporarily, in particular during a movement into the basic position(s) by the drive element (66a; 66b; 66c; 66d; 66e; 66f ) to separate. - 58 -

2. Resetting device according to claim 1, characterized in that the pull-off unit (16a; 16b; 16c; 16d; 16e) comprises at least two, in particular exactly two, force transmission elements (62a; 62b; 62c; 62d; 62e) which are provided for to be moved via the drive element (66a; 66b; 66c; 66d; 66e) along an axis aligned parallel to a pull-off direction (30a; 30b; 30c; 30d; 30e) of the pull-off unit (16a; 16b; 16c; 16d; 16e), wherein the power transmission elements (62a; 62b; 62c; 62d; 62e) are provided for transmitting the driving force about a central axis (32a; 32b; 32c; 32d; 32e; 32f) of the drawing unit (16a; 16b; 16c; 16d; 16e ) respectively to be applied to the driving element (66a; 66b; 66c; 66d; 66e) and to be separated from the driving element (66a; 66b; 66c; 66d; 66e) for resetting.

3. Restoring device according to claim 1 or 2, characterized in that the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) has at least one internal thread (64a; 64b; 64c; 64d; 64e) or a toothing ( 164f, 166f, 168f), which (s) to interact with an external thread (68a; 68b; 68c; 68d; 68e) or a toothing (169f) of the drive element (66a; 66b; 66c; 66d; 66e; 66f) is provided.

4. Restoring device according to one of the preceding claims, characterized in that the restoring unit (18a; 18b; 18c; 18d; 18e; 18f) has at least one guide unit (76a: 76b; 76c; 76d; 76e), in particular a guide link (150c), which is provided for the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) depending on a position of the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) along an axis aligned parallel to a pull-off direction (30a; 30b; 30c; 30d; 30e; 30f) of the pull-off unit (16a; 16b; 16c; 16d; 16e; 16f) from the drive element (66a; 66b; 66c; 66d; 66e; 66f) to separate or to apply to the drive element (66a; 66b; 66c; 66d; 66e; 66f). - 59 - Restoring device according to one of the preceding claims, characterized by at least one fixing unit (20b; 20c; 20d; 20e; 20f) for receiving and fixing the rivet mandrel (26b; 26c; 26d; 26e; 26f) before the rivet mandrel (26b ; 26c; 26d; 26e; 26f), wherein the fixing unit (20b; 20c; 20d; 20e; 20f) comprises at least one actuating element (44b; 44c; 44d; 44e; 44f) which is intended to, when actuated by a User, in particular pressing the actuating element (44b; 44c; 44d; 44e; 44f) against a workpiece, relative to the pull-off unit (16b; 16c; 16d; 16e; 16f) and/or to the reset unit (18b; 18c; 18d; 18e; 18f) to be moved in a pull-off direction (30b; 30c; 30d; 30e; 30f) of the pull-off unit (16b; 16c; 16d; 16e; 16f), wherein the actuating element (44b; 44c; 44d; 44e; 44f) in at least one Operating state for resetting the at least one pull-off element (46b; 46c; 46d; 46e; 46f) and the at least one force transmission element (62b ; 62c; 62d; 62e; 62f) into the basic position(s) with the at least one force transmission element (62b; 62f) and/or at least one guide element (82d; 82e) of the restoring unit (18b; 18c; 18d; 18e; 18f). Restoring device according to one of the preceding claims, characterized in that the restoring unit (18a; 18b; 18c; 18d; 18e; 18f) comprises at least one restoring element (92a; 92b; 92c; 92d; 92e; 92f), in particular a spring, which is provided for the purpose of using the at least one pull-off element (46a; 46b; 46c; 46d; 46e; 46f) and the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) to at least essentially automatically reset the at least a pull-off element (46a; 46b; 46c; 46d; 46e; 46f) and the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f, 162f) into the basic position(s) after the at least one force transmission element (62a ; 62b; 62c; 62d; 62e; 62f, 162f) by the drive element (66a; 66b; 66c; 66d; 66e; 66f) in a pulling direction (30a; 30b; 30c; 30d; 30e; 30f) of the pulling unit (16a ; 16b; 16c; 16d; 16e; 16f) in the opposite direction with a restoring force. - 60 -

7. Restoring device at least according to claim 2, characterized in that the two force transmission elements (62a; 62b; 62c; 62d; 62e) for separating from the drive element (66a; 66b; 66c; 66d) each at least partially along a direction perpendicular to the central axis ( 32a; 32b; 32c; 32d; 32e) of the pull-off unit (16a; 16b; 16c; 16d; 16e) aligned axis (72a; 72b; 72c; 72d; 72e), in particular movably mounted relative to each other.

8. Restoring device at least according to one of claims 2 or 7, characterized in that the pull-off unit (16a; 16b; 16d) and/or the restoring unit (18a; 18b; 18d) comprises at least one restoring element (94a; 94b; 94d) which is provided for the purpose of moving the two force transmission elements (62a; 62b; 62d) away from the drive element (66a; 66b; 66d), in particular from the center axis (32a; 32b; 32d) of the pull-off unit (16a; 16b; 16d), in order to separate them, to apply a restoring force, wherein in particular the force transmission elements (62a; 62b; 62d) are applied to the drive element (66a; 66b; 66d) against the restoring force.

9. Restoring device at least according to claim 4, characterized in that the guide unit (76a) comprises at least one guide element (82a) which is provided, depending on a position of the at least one force transmission element (62a) along the axis parallel to the pull-off direction (30a) axis aligned to a movement of the at least one force transmission element (62a) relative to a central axis (32a) of the pull-off unit (16a) to interact with at least one guide extension (80a) of the at least one force transmission element (62a), wherein the restoring unit (18a) has at least one stop ( 86a, 88a), which is provided to interact with the guide element (82a) when the at least one force transmission element (62a) is in an end position during or after the rivet mandrel (26a) has been pulled off, the guide element (82a) being provided for this purpose a cooperation with the stop (86a, 88a) relative to the at least one force transmission element (62a) to be moved. - 61 - Restoring device according to one of the preceding claims, characterized by at least one fixing unit (20a; 20b; 20c; 20d; 20e; 20f) for receiving and fixing the rivet mandrel (26a; 26b; 26c; 26d; 26e; 26f) before it is pulled off the rivet mandrel (26a; 26b; 26c; 26d; 26e; 26f), wherein the fixing unit (20a; 20b; 20c; 20d; 20e; 20f) comprises at least one actuating element (44a; 44b; 44c; 44d; 44e; 44f), which is provided for this purpose, when a user actuates, in particular when the actuating element (44a; 44b; 44c; 44d; 44e; 44f) is pressed against a workpiece, relative to the pull-off unit (16a; 16b; 16c; 16d; 16e; 16f) and/or to be moved to the return unit (18a; 18b; 18c; 18d; 18e; 18f) in a peeling direction (30a; 30b; 30c; 30d; 30e; 30f) of the peeling unit (16b; 16c; 16d; 16e; 16f). , wherein the actuating element (44a; 44b; 44c; 44d; 44e; 44f) is provided for the purpose of disengaging the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f) from the group when actuated Final position of the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f) out to the drive element (66a; 66b; 66c; 66d; 66e; 66f) in the pull-off direction (30a; 30b; 30c; 30d; 30e; 30f), wherein the at least one force transmission element (62a; 62b; 62c; 62d; 62e; 62f) is brought into engagement with the drive member (66a; 66b; 66c; 66d; 66e; 66f) for a driven peeling movement. Rivet attachment device for use with a machine tool (12a), with at least one reset device (14a; 14b; 14c; 14d; 14e; 14f) according to one of the preceding claims. Riveting machine tool with a restoring device (14g) according to one of Claims 1 to 10.