Riveting device having threaded spindle integrated with spring element

Abstract

The present disclosure includes a riveting device (1) having a riveting tool (10) and a drive device (30) for actuating the riveting tool (10). The riveting tool (10) has a riveting mouth (11), a spindle holder (12) which can be moved relative to the riveting mouth (11) along an action axis (W), and a spring element (15) which acts into the spindle holder (12) by means of a force. The drive device (30) has a threaded spindle (33) with a spindle threaded portion (33.3), which is operatively connected to the spindle receptacle (12) and is arranged to move along the action axis (W). The threaded spindle (33) has a front end (33.1) facing the spindle receptacle (12) and an opposite rear end (33.2) and is designed as a hollow spindle having a channel (40) extending in the longitudinal extension thereof, the channel has a rear longitudinal section (40.2) extending to a rear end (33.2) of the threaded spindle (33) and a front longitudinal section (40.1) located in front of the rear longitudinal section. In the region of the front end (33.1), the threaded spindle (33) has a fastening structure (33.4) formed by a material recess, via which the threaded spindle (33) is connected directly or indirectly in a non-displaceable manner to the spindle receptacle (12). In order to increase component durability, the front longitudinal section (40.1) of the channel (40) has a smaller cross-sectional area than the cross-sectional area of the rear longitudinal section (40.2), the spring element (15) being arranged in the rear longitudinal section (40.2).

Description

Technical Field

[0001] The present disclosure relates to a riveting device having a threaded spindle with an integrated spring element, and in particular to a blind rivet installation device, a blind rivet nut installation device, and a blind rivet bolt installation device. Background Art

[0002] Riveting devices are usually used to form a riveted connection between two or more materials, such as metal sheets, at a connection point where the materials come into contact with each other. To form a riveted connection, a plastically deformable, usually cylindrical connecting element is used, which is usually called a rivet. The rivet usually has a prefabricated mounting head at one end. To form a riveted connection, the rivet is inserted into the connection hole at the connection point up to the mounting head, and then the other end of the rivet is plastically deformed to form a head.

[0003] Riveting devices can also be used to thread components with low wall thicknesses. For this purpose, rivet nuts or rivet screws are used, in which a rivet is combined with a threaded element. The rivet nut or rivet screw is inserted into a prefabricated riveting hole in the component and then plastically deforms an area of ​​the rivet to form the upset.

[0004] Conventional riveting devices usually include a riveting tool, which is arranged to cause plastic deformation to form a head. In order to actuate the riveting tool, the riveting device has a drive device, which is usually electromechanical and includes, for example, an electric motor and a spindle transmission designed as a ball screw. Such a riveting device is described in EP0670199A1, which is referred to as a mounting device in this document. The riveting device is designed to mount a rivet nut and is arranged to subject the rivet nut to an upset by applying a pulling movement on a threaded rivet mandrel, which upset forms the head.

[0005] Riveting devices usually have a spring element, the force of which serves to press the clamping jaws of a chuck housing against, for example, a rivet mandrel of a blind rivet to be installed, which is accommodated in the chuck housing and in this way fixes the rivet mandrel axially in the chuck housing. The chuck housing is an integral part of the riveting tool and during the riveting process, a threaded spindle driven by an electric motor moves the chuck housing away from the rivet nozzle, on which the installation head of the blind rivet rests.

[0006] In some riveting devices, the threaded spindle is used to place the spring element, and the spring element is placed in the threaded spindle, and one side of the spring element abuts on the threaded spindle, and the other side acts on the clamping jaws via a pressing piece. This riveting device is described in EP 0527414 A1. Among them, the spring element is introduced into the threaded spindle from the side facing the chuck housing and is located on the tubular extension of the pressing piece, which extends to the rear end of the threaded spindle. The threaded spindle itself has an external threaded portion on its front end, which is used to insert the spring element, and the chuck housing is screwed onto this external threaded portion. Therefore, compared with other areas of the threaded spindle that are in the force flow when the riveting tool is actuated, the front end area of ​​the threaded spindle has a smaller wall thickness. In this regard, during the operation of the riveting device, the front end area of ​​the threaded spindle will just appear higher component loads.

[0007] In the course of continuous improvement development, there is a need to increase the durability of the components of riveting devices of the type mentioned in the introduction. Summary of the invention

[0008] One embodiment of a basic riveting device comprises a riveting tool and a drive device for actuating the riveting tool. For example, the riveting device, in particular the riveting tool, is suitable for blind riveting, wherein the riveting process is carried out from one side of the material to which the blind rivet is to be attached by means of a rivet mandrel. In addition to blind rivets, blind rivet nuts or blind rivet bolts can also be used.

[0009] The riveting tool preferably has a rivet nozzle and a mandrel holder, which can be moved relative to the rivet nozzle in the direction of the action axis or in the direction of the action axis. The riveting tool preferably also has a spring element, which acts on the mandrel holder by force, for example. In particular, the spring element acts along the action axis, i.e. in the axial direction, by force. For example, the mandrel holder comprises a chuck housing, which can be moved relative to the rivet nozzle in the direction of the action axis or in the direction of the action axis, and at least one clamping element, in particular a clamping jaw, which can be moved in the chuck housing along a clamping stroke. For example, the spring element is configured to apply a force to the at least one clamping element towards the inside of the chuck housing.

[0010] The drive device preferably has a threaded spindle, which preferably has a spindle thread, which is operatively connected to the spindle holder and is particularly arranged to be moved along the active axis. The spring element is preferably accommodated in the threaded spindle or the spring element is integrated in the threaded spindle. Such an internally located spring element contributes to a compact design of the riveting device, in particular to a compact design of the riveting device in the axial direction relative to the active axis, since the structural length can be saved.

[0011] In particular, the threaded spindle has a front end facing the spindle holder and an opposite rear end. In particular, the threaded spindle is designed as a hollow spindle with a channel extending in the longitudinal extension direction of the hollow spindle, for example to provide a spindle handling path. In particular, the channel has a rear longitudinal section extending up to the rear end of the threaded spindle and a front longitudinal section located in front of the rear longitudinal section. In particular, the threaded spindle has a fastening structure in the region of the front end, preferably formed by a material recess, via which the threaded spindle is connected to the spindle holder in a non-displaceable manner, for example directly to the spindle holder or indirectly to the spindle holder via an intermediate element.

[0012] The improvement of component durability is provided by the following embodiment of the riveting device: in this embodiment, the cross-sectional area of ​​the front longitudinal section of the channel of the threaded spindle is smaller than the cross-sectional area of ​​the rear longitudinal section. The channel designed in this way can compensate for the component weakening of the threaded spindle.

[0013] The larger cross-sectional area of ​​the channel in the rear longitudinal section also provides for sufficient structural space to accommodate the spring element. Therefore, a further embodiment provides that the spring element is arranged in the rear longitudinal section of the channel of the threaded spindle. Since the rear longitudinal section extends all the way to the rear end of the threaded spindle, simple assembly is facilitated, since the spring element can be inserted into the channel via the rear end of the threaded spindle.

[0014] In order to enable the force of the spring element to act in the direction of the spindle receptacle, according to a further embodiment, the spring element is supported in the direction of the action axis in the region of the rear longitudinal section, for example on the rear side of the threaded spindle, in particular directly in the region of the rear longitudinal section or via a mating retainer. If a mating retainer is provided, it is screwed, for example, into a channel at the rear end of the threaded spindle.

[0015] The improved riveting device can be designed such that: the front longitudinal section of the channel extends to the front end of the threaded spindle. A channel designed in this way counteracts component weakening of the threaded spindle in the region of the front end of the threaded spindle, for example, in the region of the front end where the fastening structure for connecting the spindle receptacle is located.

[0016] The fastening structure of the threaded spindle can include or can be a threaded portion, which is in particular an external threaded portion. Since the cross-sectional area of ​​the channel in the front end region of the threaded spindle, i.e. in the region of the fastening structure, is smaller, any component weakening caused by the threaded portion is particularly counteracted.

[0017] The improved riveting device can also be designed so that: the front longitudinal section of the channel and the screw thread of the threaded spindle overlap each other in the overlapping portion. Therefore, in the overlapping area, the channel has a smaller cross-sectional area. This also improves the durability of the component.

[0018] In one embodiment, the threaded spindle cooperates with a spindle nut of a spindle drive, which is, for example, a component of a drive device. In this case, the improved riveting device can be designed such that, in the initial state before the riveting tool is actuated, the spring element in the threaded spindle is arranged axially such that the spindle nut overlaps the spring element or the end of the spindle nut facing the riveting tool is located in front of the end of the spring element facing the riveting tool. This contributes to a compact structural design in the axial direction relative to the action axis.

[0019] In a further embodiment, the pressing piece for transmitting the force of the spring element is accommodated in a displaceable manner in the front longitudinal section of the channel of the threaded spindle. In this case, the improved riveting device can be designed such that: the pressing piece is designed as a hollow body, which has a channel extending in the longitudinal extension direction of the hollow body, and the diameter of the channel is greater than the diameter of the rivet mandrel used or can be used by the riveting tool. Therefore, the remaining part of the rivet mandrel remaining during the riveting process can be extracted from the riveting tool via the channel of the pressing piece.

[0020] In a further embodiment, the spring element has a channel extending in the direction of the longitudinal axis of the threaded spindle, the diameter of which is greater than the diameter of the rivet mandrel that is or can be used by the riveting tool. For this purpose, it is suitable to design the spring element as a compression spring. This measure is also intended to enable the remnants of the rivet mandrel that remain during the riveting process to be extracted from the riveting tool.

[0021] The following measures are intended to achieve the same purpose: According to a further embodiment, the above-mentioned mating retainer has a channel extending in the direction of the longitudinal axis of the threaded spindle, the diameter of which is greater than the diameter of the rivet mandrel that the riveting tool uses or can use. Thus, the mandrel processing path can be realized through the channel of the threaded spindle and / or the channel of the pusher and / or the channel of the mating retainer.

[0022] For example, the diameter of the passage of the spring element and / or the diameter of the passage of the mating holder is dimensioned sufficiently large so that the intermediate sleeve or the intermediate tube can be introduced into the passage of the spring element or the mating holder and the inner diameter of the intermediate sleeve or the intermediate tube is, for example, greater than the diameter of the rivet mandrel that can be used by the riveting tool. The intermediate sleeve or the intermediate tube can be arranged such that the cross section of the mandrel processing path remains constant over its preferably entire length and / or such that the cross section of the mandrel processing path is adapted to the specific mandrel diameter of the rivet mandrel used.

[0023] In a further embodiment, the threaded spindle is a component of an electromechanical drive device, which comprises an electric motor for driving the threaded spindle. For example, the threaded spindle is a ball screw spindle and is, for example, a component of a ball screw transmission.

[0024] In a further embodiment, the riveting device is designed as a manual riveting device and comprises a handle portion, which, for example, has a longitudinal extension transverse to the action axis. For example, the handle portion is formed on a device housing that accommodates the drive device, in particular the threaded spindle, and is in particular molded on the device housing. The riveting device can be held in the hand or guided manually by means of the handle portion. In particular, the handle portion enables the riveting device to be manually placed at the location to be riveted.

[0025] According to one aspect, a blind rivet installation device is provided, which includes the above-mentioned riveting device, and a rivet mandrel of a blind rivet to be installed is received in a mandrel receiving part of the riveting device.

[0026] According to another aspect, a blind rivet nut installation device is provided, which comprises the above-mentioned riveting device, and a threaded rivet mandrel for a blind rivet nut to be installed is accommodated in a mandrel receiving part of the riveting device.

[0027] According to another aspect, a blind rivet bolt installation device is provided, which includes the above-mentioned riveting device, and a threaded rivet mandrel of a blind rivet bolt to be installed is accommodated in a mandrel receiving part of the riveting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Further details and features are obtained from the following description of several exemplary embodiments based on the accompanying drawings. In the drawings:

[0029] Figure 1 An exemplary embodiment of a riveting device having a riveting tool and a drive device for actuating the riveting tool is shown in a schematic sectional view.

[0030] Figure 2 A schematic cross-sectional view shows Figure 1 An enlarged detail of the riveting device in the region of the spindle drive member in which the riveting tool is operatively connected to the riveting tool,

[0031] Figure 3 A partial schematic diagram shows a Figure 1 A possible embodiment of a blind rivet installation device of an exemplary riveting device,

[0032] Figure 4 A partial schematic diagram shows a Figure 1 A possible implementation of a rivet nut installation device of an exemplary riveting device, and

[0033] Figure 5 A partial schematic diagram shows Figure 1 A possible implementation of a pull rivet bolt installation device of an exemplary riveting device. DETAILED DESCRIPTION

[0034] Figure 1 The structure of an exemplary embodiment of a riveting device 1, which is also referred to as a mounting device in the professional field, is shown. The exemplary riveting device 1 is suitable for attaching riveted parts using a blind riveting method and is therefore designed for the use of blind rivets.

[0035] The exemplary riveting device 1 comprises a riveting tool 10 and a drive device 30 for actuating the riveting tool 10. The riveting tool 10 is preferably accommodated in a tool holder 60. The drive device 30 is preferably accommodated in a device housing 50. The tool holder 60 is preferably a metal holder. The device housing 50 is preferably a plastic housing.

[0036] The drive device 30 is preferably an electromechanical drive device. For example, the electromechanical drive device 30 comprises an electric motor 31 with a rotatable output shaft 31.1, and preferably comprises a spindle transmission 32 which can be driven by the electric motor 31. The spindle transmission 32 is preferably arranged to convert a rotational drive movement from the output shaft 31.1 into a translational drive movement acting along an action axis W for actuating the riveting tool 10. The spindle transmission 32 can be a ball screw.

[0037] Figure 2An enlarged detail of an exemplary riveting device 1 in the region of a riveting tool 10 and a spindle drive 32 is shown. As can be seen in particular from this figure, the riveting tool 10 can include a riveting nozzle 11 and a mandrel holder 12, which can be moved relative to the riveting nozzle 11 in the direction of the action axis W. For example, the mandrel holder 12 has a chuck housing 13 and at least one, preferably a plurality of clamping elements 14, 14', in particular clamping jaws, which can be moved along a clamping stroke in the chuck housing 13. The riveting nozzle 11 and / or the mandrel holder 12 and / or the chuck housing 13 and / or the clamping elements 14, 14' are preferably metal parts.

[0038] The rivet mouth 11 is used, for example, to accommodate the rivet to be installed ( Figure 1 and Figure 2 The rivet nozzle 11 preferably has a through hole 11.1 into which the rivet mandrel of the rivet is inserted. The mandrel holder 12 is used, for example, to fix the rivet mandrel so that a non-displaceable connection is formed between the received rivet mandrel and the mandrel holder 12. This can be achieved, for example, via a chuck housing 13 with clamping elements 14, 14', wherein the clamping elements 14, 14' are arranged in a movably manner in the chuck housing 13, and the rivet mandrel is fixed in the chuck housing 13, in particular clamped in the chuck housing 13, by means of the clamping elements 14, 14'.

[0039] Preferably, a spring element 15 is provided, which acts with a force into the mandrel receiving part 12. The force of the spring element 15 can be used as a preload force, by which the rivet mandrel is fixed in the mandrel receiving part 12 or at least supported. For example, the spring element 15 is arranged to exert a spring force on the clamping elements 14, 14' towards the inside of the chuck housing 13. Thus, the clamping elements 14, 14' are pressed against the rivet mandrel of, for example, a blind rivet, which is inserted into the chuck housing 13 via the through-opening 11.1 of the riveting nozzle 11 and is pressed into the clamping position. For example, the spring element 15 is a compression spring.

[0040] The riveting tool 10 can be actuated by means of the drive device 30 in such a way that the mandrel holder 12 or the chuck housing 13 together with the rivet mandrel accommodated therein is moved away from the riveting mouth 11 in the direction of the action axis W. This is achieved, for example, by the drive device 30 pulling the mandrel holder 12 or the chuck housing 13 away from the riveting mouth 11. This operating principle, which is known per se, and the blind hole riveting that can be carried out with this operating principle are described in more detail in document EP 0 116 954 A2, to which reference is hereby made complete and supplementary to the present disclosure, and it should be noted that this document may give different meanings to the same terms than the present meaning.

[0041] Preferably, the riveting nozzle 11 is fastened to the tool holder 60, for example screwed together with the tool holder 60. Preferably, the spindle holder 12, in particular the chuck housing 13, is accommodated in the tool holder 60 in a manner that it can move in the direction of the action axis W. For example, the tool holder 60 is tubular. For example, the riveting nozzle 11 is fastened to one end of the tool holder 60, while the opposite end faces the device housing 50.

[0042] The spindle transmission 32 is preferably arranged in the device housing 50. The spindle transmission 32 preferably comprises a threaded spindle 33 having a screw thread 33.3 and a spindle nut 34 which cooperates with or can cooperate with the threaded spindle 33. Preferably, the threaded spindle 33 and the spindle nut 34 are arranged concentrically with respect to a transmission axis, in particular with respect to the transmission axis of the spindle transmission 32. The output shaft 31.1 of the electric motor 31 is preferably arranged axially parallel to the transmission axis. The transmission axis is preferably located on the action axis W.

[0043] For example, the threaded spindle 33 and the spindle nut 34 are arranged such that: the spindle nut 34 is a transmission element driven by the electric motor 31 or can be driven by the electric motor 31, and the threaded spindle 33 is used to perform a translational drive movement to actuate the riveting tool 10. For example, the spindle nut 34 is rotatably supported in the device housing 50 for this purpose, and the threaded spindle 33 is fixed to prevent rotation relative to the device housing 50.

[0044] For example, the spindle nut 34 is supported in the device housing 50 in a rotatable manner in the radial direction relative to the transmission axis or the effective axis W via at least one, preferably two, radial bearings 35, 35'. For example, the radial bearings 35, 35' are arranged at an axial distance from each other. For example, the drive position is located between the radial bearings 35, 35', via which the electric motor 31 is operatively connected to the spindle nut 34. For example, the radial bearings 35, 35' are rolling bearings, in particular deep groove ball bearings.

[0045] For example, the spindle nut 34 is supported axially relative to the gear axis or effective axis W via an axial bearing 36 in a support ring 39, which serves as a bearing seat, for example, wherein the support ring 39 is supported in the axial direction on the rivet nozzle 11 via a tool holder 60. The tool holder 60 itself is held on the support ring 39, in particular loosely, for example, by a holding structure 51, for example an annular cover element.

[0046] The support ring 39 is preferably designed to be deformation-resistant or pressure-resistant. For example, the support ring 39 is a metal part. For example, the support ring 39 is a separate component. For example, the axial bearing 36 is an axial rolling bearing. In principle, the axial bearing 36 can also be a needle bearing.

[0047] For example, from Figure 1 As can be seen in the figure, at least one (preferably two) reduction stages 37, 37' can be connected between the electric motor 31 and the main shaft transmission 32. For example, the reduction stages 37, 37' are connected to each other in the power flow. For example, the reduction stages 37, 37' use a common intermediate shaft 38. For example, at least one of the reduction stages 37, 37' is a spur gear stage, and the corresponding gear element is a spur gear transmission gear. The device housing 50 can also be used to support the reduction stages 37, 37' in the radial direction. The device housing 50 can also be used to support the electric motor 31 in the radial direction.

[0048] With regard to the support of the spindle transmission 32, in particular the spindle nut 34, the support of the reduction stages 37, 37', in particular the support of the common intermediate shaft 38, and the support of the electric motor 31, in order to complete and supplement the present disclosure, reference is made to the German patent application with application number DE 10 2022 116 406.3, and it should be noted that this patent application may give the same terms a meaning different from the current meaning.

[0049] Especially from Figure 2 As can be seen in the figure, the threaded spindle 33 has a front end 33.1 and an opposite rear end 33.2, the front end 33.1 facing the spindle receiving part 12, in particular facing the chuck housing 13. The threaded spindle 33 preferably has a fastening structure 33.4 in the region of the front end 33.1 of the threaded spindle 33, by means of which the threaded spindle 33 is directly or indirectly connected to the spindle receiving part 12, in particular to the chuck housing 13, in a non-displaceable manner. For example, the fastening structure 33.4 is formed by a material recess of the threaded spindle 33 or by further re-machining or finishing of the threaded spindle 33. For example, the fastening structure 33.4 is a threaded portion, in particular an external threaded portion.

[0050] The threaded spindle 33 is preferably designed as a hollow spindle with a channel 40, which extends in the longitudinal extension direction of the threaded spindle 33. The remaining part of the rivet mandrel remaining during the riveting process can be discharged from the riveting tool 10 through the channel 40. For example, the channel 40 opens at the rear end 33.2 of the threaded spindle 33 into a discharge sleeve 42, which in turn opens into a collecting container 4 ( Figure 1). For example, the discharge sleeve 42 is connected to the device housing 50 in a manner fixed to the housing. For example, the discharge sleeve 42 is inserted with one end into the channel 40 of the threaded spindle 33, in particular at the rear end 33.2, the discharge sleeve 42 is inserted with one end into the channel 40 of the threaded spindle 33. For example, in this way, a mandrel processing path is realized via the threaded spindle 33, wherein the collection container 4 serves as a collector for the mandrel residue.

[0051] Therefore, the passage 40 of the threaded spindle 33 preferably has a larger diameter than the diameter of the rivet mandrel that can be used or used with the riveting tool 10. In order to make the structure as compact as possible in the radial direction relative to the action axis W, the diameter of the passage 40 of the threaded spindle 33 is preferably only slightly larger than the diameter of the rivet mandrel, so as to avoid that the rivet mandrel gets stuck in the passage 40 or is otherwise trapped in the passage 40.

[0052] In the exemplary riveting device 1, the channel 40 is also used in addition to accommodate the spring element 15. For example, the spring element 15 is arranged completely in the threaded spindle 33, in particular completely in the channel 40. As a result, the compactness of the riveting device 1 is improved, for example, compared to a design in which the spring element is located outside the threaded spindle. As a result, the internally located spring element 15 can save on structural length.

[0053] In order to place the spring element 15 in the channel 40 of the threaded spindle 33, it is provided, for example, that the channel 40 has a rear longitudinal section 40.2 and a front longitudinal section 40.1 located in front of the rear longitudinal section 40.2, the rear longitudinal section 40.2 extending to the rear end 33.2 of the threaded spindle 33, and the front longitudinal section 40.1 has a smaller cross-sectional area than the cross-sectional area of ​​the rear longitudinal section 40.2. Therefore, the cross-sectional area of ​​the rear longitudinal section 40.2 is greater than the cross-sectional area of ​​the front longitudinal section 40.1.

[0054] For example, this design of the channel 40 is selected specifically in order, on the one hand, to make the radial extension of the spring element 15 greater than the radial extension of the rivet mandrel. Therefore, the cross-sectional area of ​​one longitudinal section 40.2 of the channel 40 is greater than the cross-sectional area of ​​the other longitudinal section 40.1, and the spring element 15 is therefore preferably arranged in the longitudinal section 40.2 with the larger cross-sectional area. On the other hand, the longitudinal section with the larger cross-sectional area is the rear longitudinal section 40.2 of the channel 40. Compared to the front longitudinal section 40.1, this longitudinal section is not additionally weakened by the fastening structure 33.4, in particular by the fastening thread and, for example, by the thread groove associated therewith.

[0055] Preferably, the front longitudinal section 40.1 of the channel 40 extends all the way to the front end 33.1 of the threaded spindle 33. In this way, component weakening of the threaded spindle 33 in the region of the fastening structure 33.4 is counteracted. For example, the front longitudinal section 40.1 of the channel 40 extends toward the rear end 33.2 of the threaded spindle 33, so that the front longitudinal section 40.1 and the spindle thread 33.3 of the threaded spindle 33 overlap each other in the overlap 41.

[0056] For example, in an initial state before the riveting tool 10 is actuated, the spring element 15 is arranged axially in the threaded spindle 33, so that the spindle nut 34 and the spring element 15 overlap, or the end of the spindle nut 34 facing the riveting tool 10 is located in front of the end of the spring element 15 facing the riveting tool 10. For example, in order to transmit the force of the spring element 15 in the direction of the mandrel receiving part 12, a pressing piece 16 is provided. For example, the pressing piece 16 is at least partially accommodated in a front longitudinal section 40.1 of the channel 40 in a displaceable manner. For example, the spring element 15 is supported on the threaded spindle 33 by the rear end of the spring element 15. In the exemplary riveting device 1, this is achieved, for example, by a mating retainer 17. For example, the mating retainer 17 is fastened to the threaded spindle 33, in particular is screwed on the rear end 33.2 of the threaded spindle 33, for example, is screwed into the channel 40 of the threaded spindle 33.

[0057] The spring element 15 preferably has a channel 15.1 extending in the direction of the longitudinal axis of the threaded spindle 33, which channel 15.1 has a larger diameter than the diameter of the rivet mandrel that can be used with the riveting tool 10. Preferably, the pressing piece 16 is designed as a preferably elongated hollow body, which has a channel 16.1 extending in the longitudinal extension direction of the hollow body, and the diameter of the channel 16.1 is larger than the diameter of the rivet mandrel that can be used with the riveting tool 10. Preferably, the mating holder 17 is designed as a preferably elongated hollow body, which has a channel 17.1 extending in the longitudinal extension direction of the hollow body, and the diameter of the channel 17.1 is larger than the diameter of the rivet mandrel that can be used with the riveting tool 10. In this way, a mandrel processing path can be realized, in which the collecting container 4 can be used as a collector for the remaining part of the mandrel.

[0058] For example, the diameter of the passage 15.1 of the spring element 15 and / or the diameter of the passage 17.1 of the mating holder 17 is dimensioned such that the intermediate sleeve or intermediate tube ( Figure 1 and Figure 2The intermediate sleeve or intermediate tube can be introduced into the channel 15.1 of the spring element 15 or into the channel 17.1 of the mating holder 17, and the inner diameter of the intermediate sleeve or intermediate tube is, for example, greater than the diameter of the rivet mandrel that can be used with the exemplary riveting tool. The intermediate sleeve or intermediate tube can be provided so that the cross section of the mandrel processing path remains constant over the preferred entire length of the mandrel processing path and / or the cross section of the mandrel processing path is adapted to the specific mandrel diameter of the rivet mandrel used.

[0059] The riveting device 1 can be a handheld riveting device. The handheld riveting tool 1 has, for example, a gripping surface 2.1, which can be at least partially formed on the device housing 50. For example, the handheld riveting tool 1 has a handle portion 2, which is at least partially formed by the device housing 50. When the riveting device 1 is placed on a workpiece to install a blind rivet, the riveting tool 1 can be held in the hand by the gripping surface 2.1 or the handle portion 2. The riveting process itself is then carried out by actuating the riveting tool 10 by the drive device 30.

[0060] To supply the drive device 30 with electrical energy, a preferably replaceable energy storage device, such as a battery 3, can be provided, which is arranged, for example, in the region of the end of the handle part 2 facing away from the riveting tool 10. In this respect, the riveting tool 1 can be a battery-powered device.

[0061] Figure 3 FIG. 1 shows an example of a possible embodiment of a blind rivet installation device 100. The blind rivet installation device 100 has the structure of the exemplary riveting device 1 described above, wherein Figure 3 , for the sake of simplicity, only a section of the exemplary riveting device 1 in the region of the riveting tool 10 is shown. In the blind rivet setting device 100, the rivet mandrel 120 of the blind rivet 110 is inserted into the rivet nozzle 11 and accommodated in the mandrel receiving part 12, in particular in the chuck housing 13, and is fixed in the axial direction, for example, by at least one clamping element 14 or 14'. This is for example achieved by the riveting device 1 ( Figure 2 ) is caused by a spring element 15, which acts on at least one clamping element 14 or 14' via a pressing piece 16 with its spring force, whereby at least one clamping element 14 or 14' is held in a clamping position against the rivet mandrel 120. Figure 3 The blind rivet 110 is shown in a state before riveting, wherein the rivet body 130 of the blind rivet 110 is still in the initial state of the rivet body 130 .

[0062] Figure 4An example of a possible embodiment of a blind rivet nut installation device 200 is shown. The blind rivet nut installation device 200 has the structure of the exemplary riveting device 1 described above, wherein the mandrel receiving part 12 and the pressing part 16 are modified for the rivet mandrel for the blind rivet nut, and the rivet mandrel is a threaded rivet mandrel. For example, the pressing part 16 here has a function related to rotating the threaded rivet mandrel into the blind rivet nut. For the sake of simplicity, Figure 4 Only a section of the riveting device 1 in the region of the riveting tool 10 is shown. In the blind rivet nut setting device 200 , a threaded rivet mandrel 220 for a blind rivet nut 210 is accommodated in the mandrel receiving part 12 . Figure 4 The rivet nut 210 is shown in a state before riveting, wherein the rivet body 230 of the rivet nut 210 is still in the initial state of the rivet body 230 .

[0063] For example, in the exemplary blind rivet nut installation device 200, the pressing piece 16 is inserted into the receiving portion of the threaded rivet mandrel 220 and forms a form-fitting, non-rotatable connection with the threaded rivet mandrel 220 via the receiving portion. Figure 2 )'s force acting in the axial direction on the push piece 16 holds the push piece 16 in the receptacle of the threaded rivet mandrel 220 .

[0064] Figure 5 A possible embodiment of a pull rivet bolt installation device 300 is shown in an exemplary manner. The pull rivet bolt installation device 300 has the structure of the exemplary riveting device 1 described above, wherein the mandrel receiving part 12 and the pressing part 16 are modified for the rivet mandrel of the pull rivet bolt, and the rivet mandrel is a threaded rivet mandrel. For example, the pressing part 16 has a function related to rotating the threaded rivet mandrel to the screw-in part of the mandrel receiving part 12. For the sake of simplicity, Figure 5 1 shows only a section of the riveting device 1 in the region of the riveting tool 10. In the blind rivet bolt setting device 300, the threaded rivet mandrel 320 of the blind rivet bolt 310 is received in the mandrel receiving part 12 via a screw-in portion. Figure 5 The rivet bolt 310 is shown in a state before riveting, wherein the rivet body 330 of the rivet bolt 310 is still in the initial state of the rivet body 330 .

[0065] For example, in the exemplary pull rivet bolt installation device 300, the pressing piece 16 acts on the screw-in part, and in particular, the pressing piece 16 is inserted into the receiving portion of the screw-in part and forms a shape-fitting, non-rotatable connection with the screw-in part via the receiving portion. Figure 2) is held in the receptacle of the screw-in portion by the force of the spring element 15 acting in the axial direction on the pressing piece 16.

[0066] Reference numerals list

[0067] 1 Riveting device

[0068] 2 Handle part

[0069] 2.1 Grip Surface

[0070] 3. Battery

[0071] 4 Collection container

[0072] 10 Riveting tools

[0073] 11 Rivet mouth

[0074] 11.1 Through Holes

[0075] 12 Mandrel holder

[0076] 13 Chuck housing

[0077] 14 Clamping elements

[0078] 14' clamping element

[0079] 15 Spring element

[0080] 15.1 Channel

[0081] 16 Press piece

[0082] 16.1 Channels

[0083] 17 Matching retainer

[0084] 17.1 Channels

[0085] 30 Drive unit

[0086] 31 Electric motor

[0087] 31.1 Output shaft

[0088] 32 Spindle drive parts

[0089] 33 Threaded spindle

[0090] 33.1 Front end

[0091] 33.2 Rear end

[0092] 33.3 Screw thread

[0093] 33.4 Fastening structure

[0094] 34 Spindle nut

[0095] 35 Radial bearing

[0096] 35' radial support

[0097] 36 Axial support

[0098] 37 reduction stage

[0099] 37' reduction stage

[0100] 38 Intermediate shaft

[0101] 39 Support ring

[0102] 40 channels

[0103] 40.1 Front longitudinal section

[0104] 40.2 Rear longitudinal section

[0105] 41 Overlapping

[0106] 42 Discharge sleeve

[0107] 42.1 channels

[0108] 50 Device housing

[0109] 51. Maintain structure

[0110] 60 Tool holder

[0111] 100 Blind rivet installation device

[0112] 110 Blind Rivets

[0113] 120 Rivet Mandrel

[0114] 200 Rivet nut installation device

[0115] 210 Rivet Nut

[0116] 220 Threaded rivet mandrel

[0117] 300 Pull Rivet Bolt Installation Device

[0118] 310 Pull Rivet Bolts

[0119] 320 Threaded Rivet Mandrel

[0120] W Action axis.

Claims

1. A riveting device (1), comprising: A riveting tool (10) comprising a riveting mouth (11), a mandrel holder (12) and a spring element (15), wherein the mandrel holder (12) is movable relative to the riveting mouth (11) along an action axis (W), and the spring element (15) acts on the mandrel holder (12) with a force, A drive device (30) for actuating the riveting tool (10), the drive device having a threaded spindle (33), the threaded spindle (33) having a screw thread (33.3) and accommodating the spring element (15), the threaded spindle (33) being operatively connected to the mandrel receiving part (12) and being arranged to move along the action axis (W), wherein the threaded spindle (33) has a front end (33.1) facing the mandrel receiving part (12) and an opposite rear end (33.2), the threaded spindle (33) being designed with a channel (4 0), the channel (40) extending in the longitudinal extension direction of the hollow spindle, the channel (40) having a rear longitudinal section (40.2) extending up to the rear end (33.2) of the threaded spindle (33) and a front longitudinal section (40.1) located in front of the rear longitudinal section (40.2), and wherein the threaded spindle (33) has a fastening structure (33.4) formed by a material recess in the region of the front end (33.1), the threaded spindle (33) being connected directly or indirectly to the spindle receptacle (12) in a non-displaceable manner via the fastening structure (33.4), Characterized in that the front longitudinal section (40.1) of the channel (40) has a smaller cross-sectional area than the cross-sectional area of ​​the rear longitudinal section (40.2), and the spring element (15) is arranged in the rear longitudinal section (40.2).

2. The riveting device according to claim 1, wherein: The spring element (15) is supported on the threaded spindle (33) in the region of the rear longitudinal section (40.2) along the direction of the action axis (W), in particular, the spring element (15) is supported on the threaded spindle (33) directly in the region of the rear longitudinal section (40.2) along the direction of the action axis (W) or is supported on the threaded spindle (33) via a mating retaining member (17).

3. The riveting device according to claim 1 or 2, wherein: The front longitudinal section (40.1) of the channel (40) extends to the front end (33.1) of the threaded spindle (33).

4. The riveting device according to any one of the preceding claims, wherein: The fastening structure (33.4) of the threaded spindle (33) comprises a threaded portion, or the fastening structure (33.4) of the threaded spindle (33) is a threaded portion, in particular, the threaded portion is an external threaded portion.

5. Riveting device according to any one of the preceding claims, wherein: The front longitudinal section (40.1) of the channel (40) and the spindle thread (33.3) of the threaded spindle (33) overlap each other in an overlapping portion (41).

6. Riveting device according to any one of the preceding claims, wherein: The threaded spindle (33) cooperates with a spindle nut (34) of a spindle drive (32), and in an initial state before actuating the riveting tool (10), the spring element (15) in the threaded spindle (33) is arranged axially so that: the spindle nut (34) overlaps with the spring element (15), or the end of the spindle nut (34) facing the riveting tool (10) is located in front of the end of the spring element (15) facing the riveting tool (10).

7. Riveting device according to any one of the preceding claims, wherein: A pressing piece (16) is displaceably accommodated in the front longitudinal section (40.1) of the channel (40) to transmit the force of the spring element (15), wherein the pressing piece (16) is designed as a hollow body having a channel (16.1) extending along the longitudinal extension direction of the hollow body, and the diameter of the channel (16.1) of the hollow body is larger than the diameter of the rivet mandrel that can be used by the riveting tool (10).

8. Riveting device according to any one of the preceding claims, wherein: The spring element (15) has a channel (15.1) extending in the direction of the longitudinal axis of the threaded spindle (33), the diameter of the channel (15.1) of the spring element being greater than the diameter of a rivet mandrel that can be used with the riveting tool (10).

9. Riveting device according to any one of the preceding claims, wherein: The spring element (15) is a compression spring.

10. The riveting device according to any one of the preceding claims, wherein: The threaded spindle (33) is a ball screw spindle.

11. The riveting device according to any one of the preceding claims, wherein: The threaded spindle (33) is a component of an electromechanical drive (30), which includes an electric motor (31) for driving the threaded spindle (33).

12. Riveting device according to any one of the preceding claims, wherein: The riveting device (1) is a manual riveting device having a handle portion (2).

13. A blind rivet installation device (100), comprising a riveting device (1) according to any one of claims 1 to 12, wherein: A rivet mandrel (120) of a blind rivet (110) to be installed is received in the mandrel receiving part (12) of the riveting device (1).

14. A rivet nut installation device (200), comprising a riveting device (1) according to any one of claims 1 to 12, wherein: A threaded rivet mandrel (220) for a blind rivet nut (210) to be mounted is received in the mandrel receptacle (12) of the riveting device (1).

15. A rivet bolt installation device (300), comprising a riveting device (1) according to any one of claims 1 to 12, wherein: A threaded rivet mandrel of a blind rivet bolt (310) to be installed is accommodated in the mandrel accommodation part (12) of the riveting device (1).

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