EP0120309B1 - Appareil pneumatique-hydraulique pour la pose de rivets-écrous borgnes - Google Patents

Appareil pneumatique-hydraulique pour la pose de rivets-écrous borgnes Download PDF

Info

Publication number
EP0120309B1
EP0120309B1 EP84101932A EP84101932A EP0120309B1 EP 0120309 B1 EP0120309 B1 EP 0120309B1 EP 84101932 A EP84101932 A EP 84101932A EP 84101932 A EP84101932 A EP 84101932A EP 0120309 B1 EP0120309 B1 EP 0120309B1
Authority
EP
European Patent Office
Prior art keywords
valve
pneumatic
compressed
housing
setting tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP84101932A
Other languages
German (de)
English (en)
Other versions
EP0120309A2 (fr
EP0120309A3 (en
Inventor
Günter Klein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gesipa Blindniettechnik GmbH
Original Assignee
Gesipa Blindniettechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gesipa Blindniettechnik GmbH filed Critical Gesipa Blindniettechnik GmbH
Priority to AT84101932T priority Critical patent/ATE71869T1/de
Publication of EP0120309A2 publication Critical patent/EP0120309A2/fr
Publication of EP0120309A3 publication Critical patent/EP0120309A3/de
Application granted granted Critical
Publication of EP0120309B1 publication Critical patent/EP0120309B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0007—Tools for fixing internally screw-threaded tubular fasteners
    • B25B27/0014—Tools for fixing internally screw-threaded tubular fasteners motor-driven

Definitions

  • the invention relates to a pneumatic-hydraulic setting device for blind rivet nuts consisting of a pneumatic-hydraulic translation system and a pneumatically and hydraulically connected device head, in which a pulling device which carries a mandrel protruding from the mouthpiece of the device head for processing a blind rivet nut screwed onto the mandrel due to a single stroke movement of the pneumatic pressure piston of the pneumatic-hydraulic translation system against a restoring force, it can be moved axially into the device head by the amount necessary for the setting process, the part of the pulling device carrying the mandrel for the up and down twisting of the blind rivet nut by an im Device head housed compressed air motor can be driven via a reduction gear, the rotating parts are mounted in roller bearings and the compressed air motor before the actual riveting process by a pressure actuated Ste uerventil compressed air for unraveling the blind rivet nut and after the riveting process compressed air for unraveling the blind rivet nut, and a valve arrangement for pneumatic control of the drive
  • Blind rivet nuts are fastening elements that allow a screw connection for parts that are only accessible from one side, but also allow a rivet connection.
  • a blind rivet nut In the unprocessed state, a blind rivet nut consists of a hollow cylindrical rivet shaft, at one end of which a radially extending one Set head is formed and the opposite end has an internal thread, as described for example in German utility model 72 08 625.
  • the blank is screwed with the setting head first onto a threaded mandrel firmly connected to the pulling device of a blind riveting device, the internal thread of the blind rivet nut and the external thread of the threaded mandrel of course having to correspond.
  • the rivet shaft is then inserted with the threaded section first into the drill hole of the material to be joined until the setting head rests on the latter.
  • the threaded mandrel is moved backwards by the pulling device, the rivet shaft being compressed between its threaded section and the back of the material to be joined, with the formation of a radially extending, annular swelling bead (swaging, "closing head”).
  • the threaded mandrel of the pulling device of the blind riveting tool must be unscrewed from the blind rivet nut.
  • the finished rivet connection then offers the possibility of a screw connection.
  • Blind rivet nuts are particularly suitable for creating the possibility of a detachable screw connection on thin materials into which a thread cannot be cut due to their small thickness, if necessary even without a special rivet connection, by using the blind rivet nut only in one of the parts to be detachably connected.
  • the thread is cut open directly on the section of a draw bolt protruding from the mouthpiece of the device, which is rotatable and axially displaceable within a bore of the mouthpiece and by means of its opposite the threaded section, radially widened head end can rest in the starting position on a step of the bore.
  • a hexagonal recess is also provided in the head end, into which an expedient drive device for rotating the draw bolt can engage.
  • the draw bolt can either be used with a Hexagon wrench can be turned by hand or with the aid of an air motor, which is housed in a housing that can be connected to the mouthpiece and drives a hexagon shaft that engages with the draw bolt.
  • Compressed air is supplied to the compressed air motor by actuating a switch on and off via a compressed air line, which can be initiated by means of a control button for left and right rotation of the motor, which then drives the draw bolt via the hexagonal shaft.
  • the threaded portion of the draw bolt is first screwed into the blind rivet nut with its entire length protruding from the mouthpiece, so that during the subsequent riveting process the mouthpiece rests against the setting head of the blind rivet nut with a conical projection surrounding the threaded draw bolt and can widen and further enlarge it firm engagement with the setting head prevents rotation of the blind rivet nut; because according to the proposal of the utility model, the subsequent riveting process should also be carried out by the drive of the compressed air motor, for which purpose the rotary movement of the compressed air motor must be converted into a pulling movement of the pull bolt, as a result of which the blind rivet nut on the back of the material to be joined is compressed to form a rivet or closing head .
  • the compressed air motor While screwing the blind rivet nut up and down on and off the threaded draw bolt with the aid of a compressed air motor does not cause any difficulties, in order to be able to apply the tensile force required for the actual riveting process, the compressed air motor must correspond to the inflowing compressed air at a given pressure offer a large contact surface so that the required torque can be applied and the compressed air motor does not stop during the riveting process or is stalled.
  • the device is not designed for the processing of blind rivet nuts of all materials in terms of engine power; when using blind rivet nuts of softer materials than steel, such as aluminum alloy, there is a risk that the thread of the blind rivet nuts will tear during the riveting process.
  • the coupling provided in the drive system must be adjusted according to the blind rivet nuts to be processed.
  • the performance of the device can be impaired by compressed air fluctuations.
  • the possibility is also indicated of being able to effect the pulling movement of the threaded pull bolt to the rear without further rotation thereof, for example using a cam provided with a lever or with the aid of a media-operated piston-cylinder unit.
  • a setting tool for blind rivet nuts is known, in which the threaded mandrel in turn protrudes from the mouthpiece of the pistol-shaped housing and is fixedly connected to the pulling device which is rotatably and axially displaceably mounted in the housing.
  • the pulling device is moved axially in the housing by a drive, which is not described in detail.
  • a friction wheel is rotatably arranged on the side of the housing, which rotates with the pulling device through a recess in the housing, e.g. via a V-belt connected is.
  • the operator should then hold the blind rivet nut in one hand and the tool in the other hand, insert the mandrel into the blind rivet nut and roll the friction wheel against a wall or other friction surface so that it is transferred to the pulling device Rotational movement of the mandrel is screwed into the rivet nut.
  • This solution cannot satisfy; This is because the friction wheel protruding from the side of the housing can be a hindrance for riveting work, especially in places that are difficult to access.
  • the friction wheel must be driven by hand in the sense that the mandrel is screwed out of the rivet nut again because the tool is connected to the material to be joined via the mandrel and the rivet nut. Really quick, energy-saving and time-saving work is not possible in this way because of the dependence on a suitable friction surface.
  • GB-A-655 512 is a pneumatic-hydraulic one Setting tool for blind rivet nuts is known, in which the blind rivet nut to be processed is twisted on and off with the aid of a compressed air motor housed in the device head.
  • the blind rivet nut is not set by pulling but by pushing, in that the mouthpiece is displaced towards the workpiece as a result of the application of pressure fluid to a hydraulic piston relative to the threaded mandrel which is rotatable but axially immovable in the device head, which actually and disadvantageously the entire device must be raised in relation to the workpiece.
  • the twisting, riveting and untwisting process is initiated one after the other by a two-stage switching movement.
  • compressed air is fed to the compressed air motor via a control valve and a downstream pressure distribution valve for the twisting process (clockwise rotation).
  • compressed air is also introduced into a pneumatic cylinder, where it acts on a penumatic piston in the forward direction.
  • a plunger connected to the pneumatic piston displaces hydraulic pressure medium and builds pressure in a pressure chamber behind the one causing the riveting process Hydraulic pistons on.
  • the displaced hydraulic medium acts against the force of a return spring on an annular piston surface of the pulling device within the device head and thus causes a pulling movement of the pulling device including the mandrel by an adjustable stroke.
  • one of these devices has a coiled twist rod that runs on balls in the extended device head, running on the longitudinal axis of the pulling device and connected to the extension of the threaded mandrel that protrudes into the device head and rotates relative to the pulling device and can be pushed or pulled by hand in both directions of rotation using a rotary knob, the threaded mandrel being rotated accordingly.
  • the thread mandrel is twisted on and off using a in the extended device head accommodated compressed air motor, which via a planetary gear and a twist coupling rotates the mandrel in the device head and relative to the traction device, with which there is a connection acting only in the axial direction.
  • Compressed air is fed to the compressed air motor through a special air line via a regulator that can be adjusted by an air regulating screw, which, according to the actuation of two control valves housed in the device head between the air connection and the compressed air motor, is introduced into the compressed air motor for the right and left rotation for the twisting and untwisting process can.
  • control valves are actuated with the help of two trigger buttons arranged side by side on the device head.
  • the last-mentioned device has the disadvantage that it places special demands on the skill of the operator in handling the device when the blind rivet nut is screwed on and off on the mandrel, and the operator is basically overwhelmed in this respect because one actually has to twist it up and down "three hands" needed.
  • the unprocessed blind rivet nut (the blank) must be held in the left hand for the drilling; in your right hand you hold the blind riveting tool and insert the mandrel into the rivet shaft with an internal thread, and with it you have to press one of the two release buttons to introduce the compressed air into the compressed air motor for the correct direction of rotation and for the riveting process you have to operate the trigger to allow compressed air to flow into the pneumatic-hydraulic amplifier.
  • the other release button for reversing the compressed air driving the compressed air motor must be actuated for the drilling process. All of this stands in the way of a quick, undisturbed workflow.
  • the different actuation handles which are sometimes to be carried out simultaneously, require a great deal of attention and dexterity from the operator and make it necessary for the device for the up and down drilling process to be placed on a base in order to free one hand for actuating the release buttons .
  • the device is equipped with a storage area on its pneumatic cylinder.
  • DE-OS 31 12 711 describes a pneumatic-hydraulic blind riveting tool for setting blind rivets consisting of a rivet sleeve and a tear-off mandrel.
  • the object of the invention is based on a pneumatic-hydraulic setting tool for blind rivet nuts according to the previously described prior art, in which a riveting process is carried out as a result of a single stroke of the pneumatic drive and via a pulling device is to create a lightweight and handy, easy-to-use, power-operated setting tool for blind rivet nuts, in which the up and down twisting takes place more or less automatically when the blind rivet nuts are processed, in connection with the actual riveting process, which means that Setting process large time savings can be achieved and the operator is significantly relieved.
  • the device should therefore have an actuation and drive device which reduce the number of necessary switching operations to be carried out by the operator compared to known devices and allow rapid working without undesired time delays.
  • the device should work in an energy-saving manner, in particular there should be no unnecessary consumption of compressed air or even loss of leakage. It should be able to process all commercially available thread sizes of blind rivet nuts in all possible materials such as aluminum alloy, steel, stainless steel, brass, etc.
  • control valve only controls the pressure medium connection between the inlet opening for the twisting process of the compressed air motor and the compressed air source and, after the riveting process has been completed and the actuator is relieved, a connection interrupted during the riveting process between the inlet opening of the compressed air motor for its reverse rotation and the pneumatic chambers of the pneumatic part of the translation system can be established is to guide the compressed air introduced and stored for the riveting process itself into the pneumatic chamber (s) in the compressed air motor, and that in a pneumatic connection between the inlet opening of the compressed air motor for its reverse rotation and the compressed air source, a closed one in the rest position, stored in the pneumatic chambers Compressed air actuated make-up valve for feeding additional compressed air necessary for the drilling process from the compressed air source is arranged.
  • valve body of the control valve protrudes to a certain extent from its housing in the rest or shut-off position.
  • an actuating lever extending over the control valve is pivotally articulated laterally on the housing of the control valve, which engages with light pressure on its free end against the valve body projecting from the valve housing, as a result of which the control valve can be actuated.
  • control valve can be arranged in a valve housing which can be rotated around the housing of the compressed air motor.
  • compressed air for rotation in one direction of rotation can be supplied to the compressed air motor before the actual riveting process, and it can be used for the riveting process itself in the pneumatic-hydraulic
  • the compressed system can be fed to the compressed air motor through a second inlet opening for rotation in the other direction of rotation.
  • the valve or its actuating lever By turning the valve housing around the motor housing, the valve or its actuating lever can be brought into the most favorable position for actuation.
  • the actuating lever which is only to be operated for the untwisting operation, does not have to be operated by hand, but can, after it has been brought into the correct position by turning the valve housing, by light pressure, for example against the chest, in front of which the operator in any case during the untwisting operation holds, or be pressed against the forearm. This relieves the hands of the operator, and it is possible to work quickly and undisturbed without having to put the device out of his hand for the up and down drilling process in order to press buttons for reversing the compressed air to the compressed air motor.
  • the operator can concentrate entirely on the actual point of his work on the material to be joined, and his attention is not claimed by the actuation of several actuating means and by various manipulations associated with this on the device.
  • the control valve is preferably a 3/2-way valve.
  • annular space which is sealed on both sides and is constantly connected to the compressed air source by a pneumatic connection;
  • annular space opens a hole penetrating the wall of the valve housing, in which the valve body of the control valve is slidably arranged, and from this hole a connecting hole leads to another, sealed on both sides annular space between the outer surface of the motor housing and the inner surface of the valve housing and from there connecting holes in the motor housing and in the one bearing flange of the compressed air motor to its first inlet opening.
  • Both the inner edge and the outer edge of the bore penetrating the wall of the valve housing can be designed as a valve seat for the valve body of the control valve; on the inner valve seat located in the annular space, the valve body interrupts the connection between the first inlet opening of the compressed air motor and the compressed air source in its unactuated position, and in its actuated position it produces it; on the outer valve seat, in its unactuated position, it establishes the connection between the first inlet opening of the compressed air motor and the atmosphere and interrupts them in its actuated position.
  • the annular space between the motor housing and valve housing is advantageously expanded in the region of the bore receiving the valve body of the control valve by an annular groove in the inner surface of the valve housing and / or in the outer surface of the motor housing.
  • control valve can be actuated by compressed air.
  • the control valve can be integrated in the device head and consist of a valve housing with a valve body arranged coaxially movable therein.
  • the valve body of the control valve can be actuated by means of an actuating element which is arranged in the region of or near the actuating element (s) for initiating the riveting process of the setting tool and which is accommodated, for example, in the hand protection of the setting tool.
  • the valve body can advantageously be actuated by connecting compressed air by means of its actuating member.
  • the actuating member for the control valve can be arranged in a bore in, on or near the tool head of the setting tool, and means can be provided by means of which a compressed air flow can be prevented.
  • the actuating element of the control valve can consist of at least one sleeve, by means of which a pressure spring can be brought into the block position by finger pressure and the compressed air flow can thus be prevented.
  • the valve body of the control valve can advantageously be kept in the starting position (ready position) by means of compressed air.
  • annular space closed at its rear end can exist between the valve body and valve housing, the valve body in this annular space approximately in its central region against the Be sealed valve housing and have an external gradation behind this seal and compressed air from the pneumatic connection to the compressed air source can be introduced into the subspace of the annular space thus formed.
  • valve body When compressed air is switched on by means of the actuating member of the control valve, the valve body can be movable into its switching position in order to initiate the untwisting of the blind rivet nut due to the area ratio between the front surface and the smaller area of the outer gradation of the valve body.
  • an actuating means must also be operated for the drilling process and for the actual riveting process, and the drilling process takes place automatically after the riveting process by redirecting the compressed air stored during the riveting process, which is also more advantageous Way is used twice.
  • the actuating member for the control valve is accommodated in the area of the actuating member of the setting tool for initiating the riveting process, in the exemplary embodiment in the hand protection of the setting tool, so that without the operator would have to change the handle of the hand on the setting tool, it can operate the actuator for the control valve with the same finger of the same hand with which it actuates the actuator for initiating the riveting process.
  • the setting tool for blind rivet nuts there is preferably a pneumatic connection from the second inlet opening of the compressed air motor to the one connection of the valve arrangement, by actuating it for the actual riveting process, compressed air into the one located on the back of the pneumatic pressure piston of the pneumatic-hydraulic translation system Pneumatic chamber can be introduced, and in its initial position, the valve arrangement connects the pneumatic chamber located on the rear side of the pneumatic pressure piston to the pneumatic connecting line to the second inlet opening of the compressed air motor, while it separates it from it in the actuated state.
  • the drilling process is inevitably connected to the actual riveting process and automatically follows it, because both processes are controlled by the valve arrangement in its two positions, and even the compressed air of the riveting process is used.
  • the pneumatic connection between the second inlet opening of the air motor to the one connection of the valve arrangement can through a longitudinal bore in the motor housing, the housing behind the pulling device for the threaded mandrel, through the pulling device into a surrounding, sealed in both longitudinal directions housing ring space of the device head and from there through a hole in the housing of the pneumatic-hydraulic translation system.
  • the connection runs in an advantageous and space-saving manner in the housing and between parts of the device, and there are no annoying connecting lines on the outside of the device.
  • the pulling device can advantageously be constructed in several parts and essentially consist of a hollow pulling piece, in one end of which the threaded mandrel protruding from the mouthpiece of the device head is screwed in and in the other end a shaft which can be driven by the compressed air motor engages, and a pulling piece underneath Leave a fit space in a ring-shaped tension piston that can be moved tightly on the housing wall, whereby the tension piece carries a stop ring in front of the tension piston in the pulling direction, and the tension piston can rest in the opposite direction on a stop (a jacket ring that is fixed in the housing and sealed against the housing wall) and that Fit part of the pneumatic connection between represents the second inlet opening of the air motor and the valve assembly.
  • a hollow pulling piece in one end of which the threaded mandrel protruding from the mouthpiece of the device head is screwed in and in the other end a shaft which can be driven by the compressed air motor engages
  • a pulling piece underneath Leave a fit space in a
  • the pulling piston opposite to the pulling direction, has a tubular extension that also maintains the fitting space with respect to the pulling piece, against which the hydraulic chamber containing the hydraulic loading surface of the pulling piston is sealed by a (rod) seal arranged in the stop (casing ring), the connecting bore from Hydraulic chamber of the pneumatic-hydraulic booster, the hydraulic chamber and the connecting hole leading to the valve arrangement open into the housing ring chamber on the other side of the stop (casing ring).
  • annular return piston which can be pressurized with compressed air against the pulling direction, is advantageously arranged so as to be tightly displaceable against the housing wall and pulling piece, and an annular space surrounded by it and open to the pulling piston and thus to the fit space is also provided with a duct pipe which projects through the pneumatic chamber between the reset piston and the motor housing a connecting bore leading to the second inlet opening of the compressed air motor in the motor housing.
  • a pneumatic connection between the second inlet opening of the compressed air motor and the compressed air source, into which a compressed air can be actuated (opened) which is closed in the rest position and after the riveting process has been completed by the compressed air previously introduced and stored in the pneumatic-hydraulic translation system for the riveting process )
  • Make-up valve can be switched on.
  • the compressed air previously stored in the pneumatic-hydraulic transmission system is sufficient to remove normal blind rivet nuts.
  • the make-up valve provided according to the invention ensures that additional compressed air for the drilling process, namely from the compressed air source, is automatically supplied, so that e.g. Blind rivet nuts of longer lengths in all common sizes, e.g. M3 to M12, and in all common materials such as aluminum alloys, steel, stainless steel, brass, etc. can also be processed.
  • the make-up valve preferably has a valve body designed as a differential piston, the smaller application area of which lies in a valve chamber at the bottom of the valve housing that is permanently connected to the compressed air source, and the larger application area of which after the riveting process has been completed by the valve arrangement with the pneumatic chamber located on the rear side of the pneumatic pressure piston of the pneumatic-hydraulic translation system.
  • the valve body of the make-up valve is automatically lifted from its seat due to the area ratio of its application surfaces, and the make-up connection between the compressed air motor and the compressed air source is established.
  • the larger area of action of the valve body can be in the pneumatic chamber located in front of the pneumatic pressure piston.
  • the actuation stroke and thus the closing time of the valve body can advantageously be set by an externally accessible adjusting screw on the bottom of the valve housing or the valve chamber.
  • valve body of the make-up valve can be displaceable in a stepped valve cylinder and, when the valve body is raised, can be moved with the valve chamber on the housing base, i.e. annular space connected to compressed air can be connected through bores in the valve cylinder to an annular space in the lateral surface of the valve cylinder, which in turn is connected to a pneumatic connecting bore.
  • the make-up valve is preferably a 2/2-way valve.
  • valve arrangement already mentioned at the beginning can be a 4/2-way valve.
  • Fig. 1 shows schematically an overall view of the setting tool according to the invention on a scale of 1: 2 of a device of natural size, such as is placed on a footprint such as a table.
  • the setting tool which has a pneumatic-hydraulic drive, consists of the tool head A, from which the threaded mandrel 7 protrudes, the hydraulic one Part of the drive system enclosing handle B and the pneumatic part C.
  • 96 the compressed air hose, via which the setting tool is connected to a compressed air source, 119 'the control button for initiating the riveting or setting process, 62 the actuating lever for the control valve 55 in Fig 2a and 128 a hand protection.
  • D is a suspension bracket for the setting tool.
  • the essentially hollow cylindrical housing 1 of the device head A is preferably made of hard-coated aluminum.
  • a sleeve 3 with an inner diameter reduced by a certain amount compared to the housing 1 is fastened, which preferably consists of steel.
  • the inner diameter of the sleeve 3 is reduced again at its front end by a gradation, and in this area, with the help of a lock nut 6, that for different thread sizes (metric, in inches or in another thread dimension) of blind rivet nuts - e.g. from M3 to M12 ( Thread diameter from 3mm to 12mm) - exchangeable mouthpiece 2 screwed in.
  • a hollow cylindrical tension piece 4, the outer diameter of which is significantly smaller than the inner diameter of the mouthpiece 2 extends from directly behind the narrowed opening of the mouthpiece 2 coaxially into the housing 1.
  • the threaded mandrel 7 protrudes from the narrowed opening of the mouthpiece 2.
  • the threaded mandrel 7 in the exemplary embodiment is a corresponding to the different sizes of blind rivet nuts - e.g. from M3 to M12 - also replaceable DIN screw with hexagon socket, which is screwed into the front end of the tension piece 4, which has an internal thread in this area.
  • the hexagonal rod 8 is guided in the traction element 4 by means of a guide 8 'so that it cannot rotate.
  • the guide 8 ' is a screw with an internal hexagon and an external thread, which engages in an internal thread provided there in the tension piece 4, wherein the guide 8' and tension piece 4 can be glued together in the area of this thread for the purpose of secure adhesion.
  • the compression spring 50 rests on the guide 8 '.
  • the hexagonal rod 8 is also fixed within the tension piece 4 to the latter by means of a tightly fitting locking piston 48. Between the locking piston 48 and, as already mentioned, the Guide 8 'is arranged the compression spring 50 surrounding the hexagonal rod 8.
  • the hexagonal rod 8 and the locking piston 48 are firmly connected to one another in the exemplary embodiment.
  • a stopper 49 with a central bore inside the hollow tension member 4, through which, when the device is connected to compressed air, compressed air can penetrate, which acts on the locking piston 48 and thus the compression spring 50 as in FIG. 1 shown keeps excited. If the device is completely disconnected from the compressed air source, the compression spring 50 relaxes and the locking piston 48 moves up to the stopper 49.
  • the end of the mouthpiece 2 forms together with a step in the inner wall of the Sleeve 3 is an annular surface, behind which a thrust bearing for the tension member 4 is arranged.
  • the bearing balls 9 are located between a thrust washer 4 enclosing and resting on the said annular surface and a pressure ring 11 secured by a snap ring on the outer surface of the tensile member 4.
  • a hollow cylindrical part 12 which surrounds the pulling element 4 at a short distance, the outer surface of which is stepped and which is held at this step on an undercut 13 of the inner wall of the housing.
  • this hollow cylindrical part 12 is sealed on its outer wall against the inner wall of the housing and on its inner wall against the tension piece 4 by an O-ring lying in an annular groove.
  • the pull piece 4 is surrounded by a pull piston 15 designed as an annular piston, which in the direction of the mouthpiece 2 has a tubular extension 16 that maintains the same fit space 14 and ends at a distance from the hollow cylindrical part 12.
  • the tension piston 15 is sealed against the housing wall 1 by means of a piston seal (groove ring) 17.
  • An annular piston 18 is fastened to the tubular extension 16 of the pulling piston 15 shortly before its end by means of a securing ring.
  • the outer diameter of the annular piston 18 is significantly smaller than the inner diameter of the housing 1 surrounding it.
  • An O-ring 22 is located in a groove in the outer surface of the annular piston 18.
  • the pulling piston 15 lies with its one annular surface firmly on the housing 1 arranged casing ring 19, which is sealed against the housing wall with an O-ring 21 and against the tubular extension 16 of the tension piston with a rod seal 23.
  • annular piston moves during an actuation stroke of the pull piston 15 18 into the cylinder sleeve 24, the O-ring 22 then sealingly engaging the inner wall of the cylinder sleeve 24 and sealingly separating the annular spaces located inside the cylinder sleeve 24 in front of and behind the annular piston 18.
  • a stop ring 27 is fastened to the pulling piece 4 projecting through it with the aid of a snap ring, against which the pulling piston 15 strikes during an actuating stroke and in this way can pull the pulling piece 4 with it when it moves.
  • the annular return piston 28 is arranged in front of the pull piston 15, lying on its ring surface, which is sealed on its outer surface by an O-ring 29 against the housing wall and whose inside diameter is larger than the outside diameter of the stop ring 27.
  • the inner diameter of the restoring piston 28 is reduced to the outer diameter of the pull piece 4 by a radial projection and here against the outer surface of the pull piece 4 by a O-ring 30 sealed so that an annular space 31 lying in front of the pulling piston 15, essentially delimited by the return piston 28, is formed, which has a connection with the fit space 14 between the pulling piston 15 and the pull piece 4.
  • the pull piece 4 ends a little behind the return piston 28.
  • the motor housing 32 is inserted, preferably screwed, into the end of the housing 1, in which the twist drive for twisting the blind rivet nut up and down on and from the threaded mandrel 7 located.
  • a valve housing 33 is arranged to rotate freely around the motor housing 32, a small annular space 52 remaining sealed to the outside by O-rings 34, 35 remaining between the outer wall of the motor housing 32 and the inner wall of the valve housing 33.
  • a bearing flange 36 for the compressed air motor 37, 38 is sealed against its inner wall.
  • the second bearing flange 39 is located in the cylindrical end section 43 of the motor housing 32.
  • the cylindrical end section 43 of the motor housing 32 has an external thread and is closed by a screw cap 41.
  • the muffler 40 which here forms a further part of the housing of the device head A in the region of the compressed air motor 37, 38.
  • the motor housing 32 In the interior of the motor housing 32 between the two bearing flanges 36 and 39 is the one from the rotor 37 with the rotor blades 42 and the stator 38 existing air motor.
  • the two ends of the stator 38 are fitted in the motor housing 32.
  • the rotor shaft is rotatably supported in the ball bearings housed in the bearing flanges 36 and 39.
  • a pinion 44 protrudes from the rotor shaft into the motor housing 32 and engages with a planetary gear 45 accommodated there.
  • the planet carrier 46 is rotatably mounted in the motor housing 32 and continues as a shaft which extends through the central housing bore of the motor housing 32. The shaft is sealed against the wall of the bore at a narrowed point in the housing bore.
  • the shaft merges into a hexagonal shaft 47, which can also be a spline shaft. It protrudes through the motor housing 32 into the housing 1 of the device head A, where it engages with the tension piece 4, which is designed as an internal hexagon in its end section in the exemplary embodiment.
  • the tension piece 4 which is designed as an internal hexagon in its end section in the exemplary embodiment.
  • the compressed air motor 37, 38 can be driven once to the right and once to the left to twist it up and down, it has two different inlet openings for the compressed air driving it.
  • the interior of the motor housing 32 which receives the planetary gear 45, is connected to the through a lateral longitudinal bore in the motor housing 32, in which a channel tube 51 is tightly displaceable, which projects with its other end into a connecting bore in the return piston 28 opposite the motor housing 32 annular space 31 enclosed by reset piston 28.
  • the small annular space 52 between the motor housing 32 and the valve housing 33 which is rotatable about the same and which has bores 60, 61 in the motor housing 32 in connection with the space 73 between the motor housing 32 and the return piston 28, is approximately halfway up the valve housing 33 through an annular groove in the inner wall of the valve housing 33 and possibly expanded by a second annular groove in the outer wall of the motor housing 32 that overlaps this annular groove.
  • the valve housing 33 Above this enlarged annular space 52 ′, the valve housing 33 is sealed against the motor housing 32 by the O-ring 35 lying in an annular groove.
  • a valve bore 54 which penetrates the wall of the valve housing 33 and into which the valve body of the control valve 55 is inserted opens into the enlarged annular space 52 '.
  • the valve body of the control valve 55 When the valve body of the control valve 55 is at rest, it seals against the inner valve seat of the enlarged annular space 52 '. If the valve body of the control valve 55 is pushed into the valve bore 54 by pressure from the outside, it lifts off the inner valve seat and comes into sealing contact with the outer valve seat on the outer wall of the valve housing 33.
  • a longitudinal bore 56 leads from the valve bore 54 into a further annular groove 57 located above the seal (O-ring) 35 in the inner wall of the valve housing 33.
  • a transverse bore 58 in the motor housing 32 leads further into a blind bore 59 in the front Bearing flange 36 of the compressed air motor 37, 38, which has a connection to the first of the two inlet openings of the compressed air motor 37, 38.
  • an actuation lever 62 is pivotally articulated on the side of the valve housing 33 and, as soon as it is moved towards the valve housing 33, bears against the valve body of the control valve 55 which projects to a certain extent from the valve bore 54 and pushes it into the valve bore 54 upon further actuation. It is a 3/2-way valve.
  • An essentially cylindrical extension 63 of the housing 1 projects laterally from the device head A.
  • This Extension 63 is surrounded by the handle B, leaving an intermediate space 64, which is flared at both ends. From the free end of the extension 63, it is screwed to it and consequently to the housing 1 with the aid of a sealing ring socket 65.
  • the intermediate space 64 is sealed on the sealing ring frame 65 by sealing rings 66, 67 against the inner wall of the grip piece B and by a sealing ring 68 against the outer wall of the extension 63.
  • the sealing ring 68 also prevents hydraulic medium from entering the intermediate space 64 from the hydraulic space 69, which is formed by a cylindrical bore in the extension 63.
  • the space 64 is widened at the joint between the handle B and the device head A on the side facing the compressed air motor 37, 38 to form a cavity 70 and sealed to the outside by a flat seal 71.
  • a bore 72 in the wall of the device head A connects to the annular space 73 between the motor housing 32 and the reset piston 28 in the housing 1.
  • the already mentioned hydraulic chamber 69 formed by a blind bore in the extension 63 of the housing 1, has a bore 74 connecting it to the hydraulic chamber 75 located in the housing 1 between the casing ring 19 and the tension piston 15.
  • a refill hole to the hydraulic chamber 75 is provided in the housing wall 1, which is sealed by a refill screw 76 and with the help of a sealing ring 77. Hydraulic medium can be refilled easily through this refill hole if the refill screw 76 has been removed, without any complicated assembly work.
  • the cylinder pot 79 of the pneumatic part C of the drive system is connected to the flange of the handle B facing away from the device head A by means of eight long screws 78.
  • the cylinder pot is preferably made in several pieces. According to FIG. 2b, it consists of the actual cylinder pot 79a, a jacket 79b surrounding it and a base plate 79c, into which the screw heads of the screws 78 are countersunk.
  • a stand rubber 80 running around the bottom of the cylinder pot also covers the screw heads and also partially encompasses the casing 79b. If the device is out of operation, it can advantageously be placed upright on the bottom of the cylinder pot, ie the base plate 79c or the rubber stand 80.
  • a central opening is provided in the bottom of the cylinder pot 79a and in the base plate 79c which is in contact with it from the outside, and with the cylinder pot base there is a compensating piston 81 which is open on both sides coaxially with the cylinder pot 79 firmly connected, which protrudes through the entire cylinder pot 79 into the flange part of the handle B.
  • the central opening in the bottom of the actual cylinder pot 79a is bent inwards and the hollow compensating piston 81 is held therein.
  • An annular disk-shaped pneumatic pressure piston 82 is arranged in the cylinder pot 79 so as to be tightly displaceable against the cylinder wall. Its inner diameter is larger than the outer diameter of the compensating piston 81, and coaxial to the compensating piston 81 and to the pneumatic pressure piston 82, a hollow plunger 83 is fixedly connected to the latter, with its closed, free end through the central opening of the sealing ring holder 65 into the Hydraulic medium-filled hydraulic space 69 protrudes.
  • the hydraulic chamber 69 is through a rod seal 84 between the sealing ring socket 65 and the plunger 83 against the pneumatic cylinder cup 79 and through the already mentioned sealing ring 68 between the outer wall of the housing extension 63 and the sealing ring socket 65 screwed thereon against the intermediate space 64 between the housing extension 63 and the handle B sealed.
  • a guide ring 85 for the plunger 83 is arranged between the rod seal 84 and a radially inward extension 86 of the sealing ring holder 65.
  • a sealing ring 87 which tightly surrounds the plunger 83 is located in the sealing ring socket 65 and seals the pneumatic chamber 88 lying in front of the pneumatic pressure piston 82 in the actuating direction.
  • the compensating piston 81 which concentrically projects into the hollow plunger 83 while maintaining a radial space, is sealed at its free end against the inner wall of the plunger 83.
  • the compensating piston 81 consists of two parts, namely a relatively thin-walled tube 81a, which is firmly connected to the bottom of the cylinder pot, and a sleeve 81b pushed onto the free end of the tube 81a, in the outer wall of which the annular groove is located for the sealing ring 89 sealing against the inner wall of the plunger 83.
  • the open end of the plunger 83 connected to the annular pneumatic pressure piston 82 is inserted into the central opening of the pressure piston 82.
  • Fig. 3 which shows a cross section through the flange part along the section line C - D in Fig. 2b, shows a longitudinal section through this 4/2-way valve 92.
  • Fig. 3 shows the cross section through the flange part of the handle B, before it is pushed onto the lateral extension 63 of the housing 1, so that the central circular line E in Fig.
  • connection bore 93 has through bores direct connection to the intermediate space 64 at 97, to a cylindrical opening (valve housing) 98, in which a refill valve 120 according to the invention, described in more detail below with reference to FIG. 4, is accommodated at 99 and to the cylindrical opening (valve housing ) 100, in which the 4/2-way valve 92 is accommodated, at 101.
  • the valve housing 100 is divided into two sections with different diameters by a bevel in the wall divided. At the bottom of the section with the smaller diameter, the connection 101 opens laterally from the compressed air connection bore 93.
  • a control cylinder 102 is accommodated, which is closed on its side facing away from the bottom of the valve housing 100, but towards the bottom is open.
  • the control cylinder 102 has an annular groove 103; on both sides of this annular groove 103 it is sealed against the wall of the valve cylinder 100 by sealing rings.
  • the annular groove 103 is connected through a bore 104 in the wall of the control cylinder 102 to the cylinder space 105 thereof.
  • a control slide 106 is tightly displaceable in the cylinder space 105 of the control cylinder 102 and projects into the narrower section of the valve housing 100, on the bottom of which it can come to rest against a stop disk 107.
  • the spool 106 has four sections with three different diameters; The first section with the largest diameter, which is tightly guided in the control cylinder 102, is followed by a second section which is reduced by a gradation to a smaller diameter, and this is followed by a third section which is reduced in diameter by a bevel, and this is followed by the second section Diameter of the second section expanded fourth section. If the control slide 106 rests on the housing base, there are its second to fourth section in the narrower part of the valve housing 100.
  • the control slide 106 is pierced in the longitudinal direction from both sides; the two boreholes are connected to one another by a throttle opening 108, through which the cylinder space 105, via the bore 104 the annular groove 103 and an invisible bore are supplied with compressed air which is present at the valve 119, 119 '.
  • the throttle opening 108 is dimensioned such that, when the valve 119, 119 'is actuated, it prevents the outflow of an undesirable excess of compressed air through the valve 119, 119' to the outside.
  • each of the receiving rings 109, 110, 111 is sealed on its outer surface against the valve housing 100 and also has an annular groove in its inner surface, in each of which there is a sealing ring sealing against the second and fourth sections of the control slide 106.
  • valve compartments there are thus four valve compartments, the first 112 between the housing base and the first receiving ring 109, the second 113 between the first 109 and the middle receiving ring 111, the third 114 between the middle 111 and the last receiving ring 110, and the fourth 115 is created by a recess in the wall of the control cylinder 102 resting with its annular surface on the last receiving ring 110.
  • These four valve spaces 112, 113, 114, 115 are connected to one another or separated from one another in different ways depending on the position of the control slide 106.
  • the first valve chamber 112 is connected to the compressed air connection through the connecting bore 101 opening at the bottom of the valve housing 100.
  • the second valve chamber 113 is connected to the pneumatic chamber located on the rear side of the pneumatic pressure piston 82 in the pneumatic cylinder 79. This connection is established by a channel tube 117 which extends longitudinally through the cylinder pot 79 and penetrates the pressure piston 82. An annular groove running in the through opening of the pressure piston 82 receives a sealing ring 118 which seals against the outer surface of the channel tube 117, so that the pressure piston 82 moves is tightly guided on the sewer pipe 117 (see Fig. 2b).
  • the third valve chamber 114 is connected to the pneumatic chamber 88 located in front of the pneumatic pressure piston 82 and also (cf. FIG.
  • the annular space 103 formed by the annular groove 103 in the lateral surface of the control cylinder 102 is connected to a 2/2-way valve 119, which can be actuated by the actuating member designed as an operating button 119 ', via a connecting bore which is not visible in the drawing.
  • the preferably negative control of the control slide 106 in the cylinder space 105 of the 4/2-way valve 92 described above takes place via the annular space 103 and the bore 104 in the wall of the control cylinder 102.
  • a pressure-area-dependent make-up valve 120 is also arranged in the flange part of the handle B connected to the cylinder pot 79 in a longitudinally extending valve housing 98.
  • This make-up valve 120 can be seen in the longitudinal section in the sectional drawing according to FIG. 4 following the broken section line A - B in FIG. 3, that is to say as it is represented in a broken longitudinal section through the flange part of the handle piece B.
  • a cylindrical valve housing 98 open in the direction of the pneumatic chamber 88 lying in front of the pneumatic pressure piston 82 in the cylinder pot 79, with the The cylinder part 79 connected to the flange part of the handle B is pressed in a valve cylinder 121 which bears on its two end sections against the valve housing 98 and has a circumferential recess between the two end sections in its lateral surface which forms an annular space 122 with the wall of the valve housing 98.
  • This annular space 122 is connected to the pneumatic chamber 88, which in turn has a connection with the pneumatic connection bore 116 in the handle B (see FIG. 2a) when the 4/2-way valve 92 is in the appropriate position.
  • the valve cylinder 121 By stepping to about half the height of its inner wall, the valve cylinder 121 has two sections with different wall thicknesses.
  • the thin-walled section is the pneumatic chamber 88, the section with the thicker wall faces the bottom of the valve housing 98.
  • the annular space 122 is connected to its narrow cylinder space by at least one, preferably two or more connecting bores 124 in the thick-walled section of the valve cylinder 121.
  • valve seat The inner edge of the annular surface of the valve cylinder 121 facing the bottom of the valve housing 98 is designed as a valve seat, and a differential piston that is displaceable in the valve cylinder 121 trained valve body 125 can rest on this valve seat with a sealing surface formed at one end, for example a sealing ring lying in an annular groove, so that the intermediate valve chamber 123 is tightly separated from the interior of the valve cylinder 121.
  • the essentially cylindrical and in the form of a stepped piston valve body 125 has an annular groove in the area of the connecting bores 124 of the thick-walled section of the valve cylinder 121, which forms an annular space 126 with the inner wall of the valve cylinder 121, which through the connecting bores 124 connects with the Annulus 122 is connected between the outer surface of the valve cylinder 121 and the valve housing 98.
  • the annular space 126 can be sealed on the one side on the valve seat described above and on the other side on the lateral surface of the valve body 125 against the inner wall of the thick-walled section of the valve cylinder 121 with the aid of a sealing ring.
  • valve body 125 extends into the thin-walled section of the valve cylinder 121 and is only radially expanded at its end at a distance from the step in the inner wall of the valve cylinder 121 and sealed against the cylinder wall.
  • the distance of the widened end of the valve body 125 from the gradation of the cylinder inner wall permits a displacement of the valve body 125 in the valve cylinder 121 in the opening direction of the valve formed at the other end as described above.
  • valve housing 98 Opposite the valve body 125, the bottom of the valve housing 98 is pierced in the flange part; An externally accessible adjusting screw 127 is screwed into this bore, with which the stroke of the valve body 125 can be adjusted.
  • a hand guard 128 which extends from the device head A to the flange part of the handle B connected to the pneumatic cylinder 79 (cf. also FIG. 1).
  • the entire device is light and yet extremely powerful. It has a pulling force of around 1.5 tons and can process all common sizes of blind rivet nuts.
  • plastic for various components has the particular advantage that they are injection molded as plastic molded parts which can then be assembled without post-processing.
  • these plastic parts can be colored as external parts in a desired color during manufacture, so that the device does not have to be painted.
  • the plastic used is preferably a glass fiber reinforced plastic made from one of the polyamides.
  • the drawing Fig. 2a and Fig. 2b shows the setting tool or the valves described with reference to Figs. 3 and 4 (4/2-way valve 92, make-up valve 120) in the ready position, ie when compressed air from the compressed air hose 96 comes from a compressed air source , but when the device is not operated.
  • the 4/2-way valve 92 operates with negative control;
  • compressed air is available from the compressed air source through the compressed air hose 96 via the connecting bore 101, the first valve chamber 112 delimited by the first receiving ring 109, the throttle opening 108, the cylinder chamber 105, the bore 104, the annular chamber 103 and the invisible bore on valve 119, 119 '.
  • it acts in the cylinder space 105 of the 4/2-way valve 92 on the larger application area of the control spool 106 and holds it in the position shown in FIG. 3, and the compressed air acts there on the smaller annular surface of the control spool 106.
  • the device is now to be operated - although it must of course be assumed that the hydraulic system is completely filled with hydraulic medium - the operator takes the blind rivet nut in his left hand, grips the setting tool on handle B with his right hand and guides the blind rivet nut and mandrel 7 of the setting tool together.
  • the control valve 55 To twist the blind rivet nut onto the threaded mandrel 7 with the aid of the compressed air motor 37, 38, the control valve 55 must be actuated, which is done with the aid of the actuating lever 62 which is pivoted on the side of the valve housing 33.
  • An advantage of the setting tool according to the invention is that the operator does not have to move this actuating lever 62 by hand.
  • the valve housing 33 which can be rotated around the motor housing 32, is brought into the suitable position so that the actuating lever 62, for example, by lightly pressing against the chest, at the level of which the operator holds the device anyway during this process, or against the forearm can be operated.
  • the actuating lever 62 comes into contact with the valve body 55, which protrudes correspondingly from the valve housing 33, lifts it off its inner valve seat and brings it sealingly into contact with its outer valve seat.
  • the force of the air motor (drillers) 37, 38 is not so great that the blind rivet nut can be deformed.
  • the compressed air motor 37, 38 is rather stalled and stops.
  • the actuating lever 62 on the valve housing 33 can be released again.
  • the mandrel 7 with the blind rivet nut twisted on until the setting head is seated in the drill hole provided in the material to be joined is inserted and the operator actuates the 2/2-way valve 119 by depressing the control button 119 'to negatively actuate the 4/2-way valve 92.
  • the 2/2-way valve Valve 119 connects between the annular space 103 on the control cylinder 102 of the 4/2-way valve 92 and the atmosphere, so that the compressed air escapes from the cylinder space 105 of the control cylinder 102 and the application of the large contact area of the control slide 106 stops, so that the compressed air which is constantly present at the smaller contact surface of the control slide 106 in the space 112 can now push the control slide 106 to the left into the control cylinder 102.
  • the in front of the pneumatic pressure piston 82 receives in the Pneumatic chamber 88 located in cylinder chamber 79 via the valve chambers 114 and 115 communicates with the atmosphere, while compressed air can pass through valve chambers 112 and 113 and via the channel pipe 117 connected to valve chamber 113 in cylinder chamber 79 into the pneumatic chamber on the rear side of pressure piston 82 and thus acts on the pressure piston 82 in the actuating direction (arrow P in FIG. 2b) on its surface F1.
  • the pneumatic pressure piston 82 thus moves together with the plunger 83 fixedly connected to it in the direction of the arrow P (without however coming into contact with the handle B), the air contained in the pneumatic chamber 88 lying in front of it being able to escape to the atmosphere.
  • the plunger 83 is tightly guided on the free end of the compensating piston 81 which is reinforced by a sleeve 81b in the exemplary embodiment shown.
  • the compensating piston 81 which is open at the bottom of the cylinder pot, ensures pressure equalization in the interior space which widens when the plunger 83 moves and is determined by the plunger 83 and the compensating piston 81.
  • the plunger 83 penetrates into the hydraulic space 69 filled with hydraulic medium and displaces the hydraulic medium through the housing bore 74 into the annular space 75 between the fixedly fixed casing ring 19 and the annular pressure surface of the pull piston 15 in the housing 1.
  • the hydraulic medium acts on the pull piston 15 in the pulling direction.
  • the blind rivet nut is deformed as a result of the screw engagement of the threaded mandrel 7, and the setting process is carried out with the formation of a closing head on the side of the material to be joined facing away from the device.
  • the annular piston 18 attached to its circumference also reaches the inside of the cylinder sleeve 24 and lies sealingly against the inner surface thereof.
  • the control button 119 ' is released and the 2/2-way valve 119 returns to its starting position, so that the cylinder chamber 105 penetrates as described above Compressed air can return control spool 106 to the starting position shown in FIG. 3 against the force acting on its smaller, opposing loading surface.
  • the pneumatic chambers of the cylinder pot 79 lying on both sides of the pneumatic pressure piston 82 are connected to one another again via the two middle valve spaces 113, 114 of the 4/2-way valve 92, and the setting tool begins to return to its starting position or standby position .
  • the arrangement of the compensating piston 81 in the cylinder head 79 brings the two surface sizes of the annular surfaces F1 'in front and F1 behind the pressure piston 82 to approximately the same values.
  • the hydraulic medium located in the annular space 75 of the device head A is therefore pushed back into the hydraulic space 69, as a result of which the plunger 83, by acting on its surface F2, and thus also the pneumatic pressure piston 82 are pushed back into their starting position. Air displaced from the plunger can escape through the interior of the open compensating piston 81.
  • the compressed air of the previous riveting process is in the switching position described above, in which the two pneumatic chambers in front of and behind the pressure piston 82 and the space created between the shoulder 25 of the cylinder sleeve 24 and the ring piston 18 are connected at the same time on the two ring surfaces F1 'and F1 of the pressure piston 82 and the annular surface F4 of the annular piston 18.
  • compressed air is always present on the return piston 28 with its annular surface F3 ', while on the other hand against the annular surface F3 of the tension piston 15 the hydraulic medium acts in the opposite direction.
  • the stored compressed air now flows around the annular piston 18, enters the annular space 20 surrounding it outside the cylinder sleeve 24 and also the end of the tubular extension 16 of the pulling piston 15, from there through the fit space 14 between the pull piece 4 and the pull piston 15 with extension 16 further into the annular space 31 surrounded by the return piston 28 and further through the sewer pipe 51 into the interior of the motor housing 32 and finally through the planetary gear 45 and a bore (not shown in the drawing) in the planetary gear 45 adjacent bearing flange 36 to the other inlet opening of the compressed air motor 37, 38.
  • the compressed air entering the compressed air motor 37, 38 drives the rotor 37 thereof to the left.
  • the compressed air that is present is sufficient to make a few left turns of the rotor 37 and thus of the tension piece 4 together with the threaded mandrel 7, that is to say to unscrew the threaded mandrel 7 by a few turns from the blind rivet nut that has been set.
  • the make-up valve 120 already described above with reference to FIG. 4 is provided in the flange part of the handle B connected to the cylinder pot 79.
  • the pressure prevailing in the pneumatic chamber 88 located in front of the pneumatic pressure piston 82 lies on the larger pressure surface F6 of the valve body 125, while its smaller pressure surface F5 in the space 123 between the make-up valve 120 and the bottom of its valve housing 98 is constantly away from it Compressed air source is supplied with compressed air through the connecting bore 99.
  • the valve body 125 is accordingly held in its seat on the valve cylinder 121.
  • the compressed air previously introduced to actuate the device reaches the rear of the pressure piston 82 , for example. 6 bar, also in the pneumatic chamber 88 lying in front of it and here now also acts on the valve body 125 on its larger contact surface F6. Because of of the area ratio of the two acting surfaces F5: F6, the compressed air entering the pneumatic chamber 88 can move the valve body 125 against the force acting from the compressed air connection on the smaller acting surface F5 in its valve cylinder 121 and lift it off its valve seat.
  • the compressed air from the compressed air source in the space 123 can pass through the open make-up valve 120 into its annular space 126 and through the connecting bores 124 in the valve cylinder 121 into the annular space 122 on its outer surface and from there has a connection again via the housing bore 116, the annular space 20 in Housing 1, the fitting space 14, the annular space 31 in the return piston 28, the sewer pipe 51, the planetary gear 45 and the bearing flange 36 for the inlet opening of the compressed air motor 37, 38 for left-hand drive.
  • the make-up valve 120 via the make-up valve 120, the compressed air required for the complete and safe removal of the threaded mandrel 7 by the blind rivet nut is provided from the compressed air connection, that is to say from the compressed air source.
  • the twist-off movement is ended in that a pressure reduction takes place in the pneumatic chamber 88 located in front of the pressure piston 82, as a result of which the valve body 125 of the make-up valve 120 is gradually or delayed pressed back onto its seat by the compressed air acting on its smaller application area F5 becomes.
  • the degree of deceleration is determined by the degree of the previous opening, which can be varied by the adjusting screw 127.
  • FIGS. 5 and 6 Another embodiment of the setting tool according to the invention is shown in FIGS. 5 and 6, in which the actuating member for the control valve is arranged in a region near the actuating member for the setting tool.
  • Fig. 5 shows a longitudinal section through the tool head A and part of the handle B of this embodiment of the setting tool according to the invention as shown in Fig. 2a (and on the same scale as this).
  • the same parts as in Fig. 2a are given the same reference numerals in Fig. 5, so that to avoid repetition of these parts reference can be made to the description of Fig. 2a.
  • FIG. 6 shows, on an enlarged scale compared to FIG. 5, a cross section through the setting tool according to the invention in the area of the hand protection 128 along the line EF in FIG. 5, viewed in the direction of the arrow.
  • the representation is kept in relation to a practical embodiment on a scale of 2: 1. 6 shows at the same time a longitudinal section through the actuating element 62 'for the control valve, and there are also indicated the housing 1 of the device head A, the adapter 5 and the sleeve 3, which lie behind the actuating member 62 '.
  • the actuator 62 'for the control valve in the hand guard 128 is arranged near the device head A. It can thus be conveniently, preferably by the operator, who holds it on the handle B with his hand when working with the setting tool and for initiating the riveting process, depresses the operating button 119 'with a finger of the hand, usually with the index finger same finger operated.
  • the actuating element 62 ' is accommodated in a horizontal bore 129 (with a circular setting cross-section through the hand guard 128 when the setting tool is parked on a contact surface), namely in the end part of the hand guard 128 towards the tool head A before it goes into a ring shape merges, which encompasses the device head A at its front end.
  • a compression spring (coil spring) 130 is inserted into the center of the bore 129.
  • Two cylindrical sleeves 62 serve as the actuating member, each of which already performs the actuating function for itself and which can be actuated selectively, for example by a right-hander who holds the setting tool in the right hand, with the index finger of the right hand, by a left-hander , holding the setting tool in the left hand, with the index finger of the left hand. 6 from the left or from the right in each case in one of the openings of the bore 129, in such a way that a space remains between the inner ends in the bore 129 and that the outer ends thereof protrude a certain amount from the hole.
  • the sleeves 62 'each have, at a distance from their inner end, a collar 131, the outer diameter of which is somewhat smaller than the inner diameter of the bore 129.
  • the compression spring 130 rests on the collars 131. From the collars 131, the inner ends of the sleeves 62 'still protrude to a certain extent (from a few spring windings) into the space surrounded by the compression spring 130, that is to say into the compression spring 130.
  • the outer diameter of the sleeves 62 ' is smaller than the inner diameter of the bore 129 to such an extent that between the bore 129 and the sleeves 62', in the exemplary embodiment, hollow rivet-shaped receiving sleeves 132 are press-fitted into the bore 129, which the Hold the sleeves 62 'in position in the bore 129 in such a way that the sleeves 62' are held in the receiving sleeves 132 so tightly that they can each be pressed against their outer end by means of a finger, preferably the index finger, which is also the control button 119 'actuated, bring the compression spring 130 into the block position, overcoming its spring force. Consequently Both sleeves 62 'each protrude from the associated receiving sleeve 132 by at least the amount required to bring the compression spring 130 out of its (relaxed) starting position into a block position by means of one of the sleeves 62'.
  • FIG. 6 also shows the opening 133 of the bore 134 shown in FIG. 5 in the hand guard 128, which bore 134 opens into the compression spring 130 approximately in the central region of the bore 129.
  • the essentially hollow cylindrical valve housing 33 ' (in contrast to the embodiment according to Fig. 2a not rotatable) is fixed between the housing 1 of the device head A and the muffler 40' and thus simultaneously has the function of a further housing part of the device head A.
  • the Valve housing 33 ' is coaxially arranged with an essentially hollow cylindrical valve body 55' of the control valve as a slide, and within valve body 55 'coaxially with it the motor housing 32 at least partially surrounded by valve body 55'.
  • a small annular space 138 is likewise formed on the inner wall of the valve housing 33 ', which is closed off by a rear O-ring 139 and in the approximately central region of which the outer wall of the valve body 55' is sealed off from the inner wall of the valve housing by a further O-ring 140.
  • the annular space 138 is conically widened outward on an extension of the motor housing 32 to be described, up to a bore in the front end of the valve housing 33';
  • a tube 141 is embedded, which extends through a hole in the housing 1 at the front end of the ring-shaped part of the hand protection 128 into this ring-shaped part and there opens into a circumferential groove 142 which runs approximately at the height of the bore 129 in the hand guard 128 in the inner wall of the annular part and which is sealed inwards against the front end of the housing 1 by means of an O-ring 143, but which is directed outwards the groove 142 does not completely fill out, so that in the groove 142, for example, if it approximates the cross section of a partial oval, for example a circumferential free space 144 with a cross section of approximately quarter moon can be formed, which
  • the valve body 55 ' has a fine bore (puncture) 145 in front of the (approximately middle) O-ring 140, through which, as will be explained in greater detail, compressed air from the fit clearance 135 between the motor housing 32 and the valve body 55' is always present.
  • the annular space 138 between the valve body 55 'and the valve housing 33' and from there through the tube 141 the free space 144 in the groove 142 and the bore 134 in the area of the compression spring 130 into the bore 129, from where the compressed air passes through the sleeves 62 ', when these are in the unactuated state, flows outwards.
  • FIG. 5 shows this embodiment of the setting tool according to the invention in the ready position (as in FIG. 2a the embodiment there).
  • the air in the annular space 73 passes through the bores 61, 60 'into an outer groove 146 of the motor housing 32 and into the clearance 135 between the motor housing 32 and the valve body 55' and through the fine bore 145 in the valve body 55 'in the (here through the O-ring 140 sealed to the rear) annular space 138 between valve body 55 'and valve housing 33', further through the tube 141, the free space 144 in the groove 142 located in the annular part of the hand guard 128 and the bore 134 in the hand guard 128 in the bore 129 for receiving the actuators 62 'from where they are shown in the unactuated state of the setting tool constantly flows to the outside.
  • Compressed air thus passes through the second bore 148 in the valve body 55 'from the clearance 135 between the motor housing 32 and the valve body 55' into the (part of the) annular space (s) 138 between the valve body 55 'located behind the (approximately middle) O-ring 140. and valve housing 33 'and there acts on the valve body 55' on its outer step 47 and holds it in its switching position according to drawing Fig. 5 (ready position).
  • the compression spring 130 is brought into the block position after the actuator 62' has traveled a relatively short distance , wherein the windings of the compression spring 130 abut each other in such a way that compressed air can no longer get into the interior of the compression spring 130 from the opening 133 of the bore 134 in the hand guard 128, as a result of which the above-described constant outflow of compressed air through the actuating member 62 'is prevented.
  • the compressed air builds up on the front surface Fa of the valve body 55 'a switching of the valve body 55' against the smaller force of the compressed air which is present on the smaller area Fc of the outer step 147 such that the valve body (Slider) 55 'to its rear stop on the silencer 40'.
  • the rear 137 of the two O-rings 136 and 137 sealing the clearance 135 between the motor housing 32 and the valve body 55' has a plurality of bores 150 provided in the rear region of the motor housing 32 (shown in FIG.
  • the actuating member 62 'in the hand guard 128 can be released again, so that the compression spring 130 in the bore 129 in the hand guard 128 is relieved and compressed air is continuously released from the actuating member 62 'can flow off.
  • the mandrel is automatically drilled out, in some cases in an energy-saving manner with the compressed air introduced and stored in the device for the riveting process, in part via the make-up valve according to the invention with compressed air from the connected compressed air source, in order to ensure complete drilling, which also includes the make-up valve after the riveting process has been completed, it is automatically operated by the previously stored compressed air.
  • the actuating member for the control valve and thus for the twisting operation according to one embodiment as a lever being articulated laterally on a valve housing 33 which can be rotated around the device head A, after the valve housing 33 has been brought into the correct position, it can be pressed, for example by lightly pressing against it the chest are operated, and there are no frictional movements against the wall as in known devices for drilling.
  • the actuating member for the control valve and the twisting process is arranged in the hand guard 128, and thus still in the area of the operator's finger, which also initiates the riveting process by depressing the operating button 119 '.
  • the setting tool can thus be held continuously in the hand at work; it does not have to be put out of hand for the up and down drilling process in order to be able to initiate the drilling process, since there is no need to operate the drilling device by hand.
  • the actuations of the control elements for the drilling and riveting processes follow one another in the work cycle, and the operator has his other hand free to insert the mandrel with the blind rivet nut in the drill hole provided in the material to be joined. This enables rapid, undisturbed working with the setting tool according to the invention, which results in considerable time savings when setting blind rivet nuts.
  • the operator can concentrate entirely on the actual point of their work, the connection points of the material to be joined, and their attention is not called upon by various manipulations which are necessary on the riveting device and which require an alternating gripping and setting down of the device.
  • blind rivet nuts can be processed over the wide range of all common sizes - e.g. from M3 to M12 - and in all common materials such as aluminum alloys, steel, stainless steel, brass, etc. .
  • the distance L of the undercut 2 'behind the front part of the mouthpiece 2 to the lock nut 6 is adjustable, and this adjustable distance L is the tool stroke (the drag length) for the riveting process.
  • the distance L corresponds to the maximum device stroke in the exemplary embodiment shown in FIG. 2a.
  • the setting is made by turning the mouthpiece 2. If the mouthpiece 2 is brought into contact with the counter nut 6 by turning it to the right with its undercut 2 ', the distance L and thus the device stroke are zero (zero position).
  • the mouthpiece 2 moves the thrust piece 4 and thus the stop ring 27 backwards, ie in the direction of the compressed air motor 37, 38, via the thrust washer 10, the bearing balls 9 and the pressure ring 11.
  • the distance L can be set to the desired dimension, up to the maximum device stroke, thrust washer 10, bearing balls 9, thrust ring 11, pull piece 4 and stop ring 27 in opposite directions Move direction.
  • the annular space 31 offers the necessary space for the forward and backward movement of the stop ring 27.

Claims (32)

  1. Appareil pneumatique-hydraulique pour la pose de rivets-écrous borgnes, comportant un système de transmission pneumatique-hydraulique (B, C) et une tête d'appareil (A), reliée à celui-ci de manière pneumatique et hydraulique, dans lequel un dispositif de traction portant une broche filetée (7) qui fait saillie à partir de l'embouchure (2) de la tête d'appareil (A), est apte, en vue de transformer un rivet-écrou borgne vissé sur la broche filetée (7), à être entré dans la tête d'appareil (A), suivant le degré nécessaire à la pose, axialement à l'encontre d'une force de rappel, à la suite d'une seule course du piston de pression pneumatique (82) du système de transmission pneumatique-hydraulique (B, C), étant précisé que l'élément, portant la broche filetée (7), du dispositif de traction prévu pour serrer et desserrer par torsion le rivet-écrou, est apte à être entraîné, par l'intermédiaire d'un mécanisme démultiplicateur (45), par un moteur à air comprimé (37, 38) logé dans la tête d'appareil (A), que les éléments rotatifs sont montés dans des paliers de roulement, que le moteur (37, 38) est apte à être alimenté en air comprimé par une soupape de commande (55) apte à être actionnée par pression, en vue de serrer le rivet-écrou borgne, avant l'opération de rivetage proprement dite, et en vue de desserrer l'écrou de rivetage, après l'opération de rivetage, et un dispositif de soupape est aussi apte à être alimenté en air comprimé en vue de la commande pneumatique du mécanisme d'entraînement, caractérisé en ce que seul le raccord de moyens de pression (64, 72, 73, 61, 60, 52, 56, 57, 58, 59) prévu entre l'orifice d'entrée pour l'opération de serrage du moteur à air comprimé (37, 38) et la source d'air comprimé est apte à être commandé par la soupape de commande (55), et, une fois le rivetage achevé, une liaison interrompue pendant le rivetage entre l'orifice d'entrée du moteur à air comprimé (37, 38), prévu pour la marche en sens inverse de celui-ci, et les chambres pneumatiques (88) de l'élément pneumatique (C) du système de transmission, peut être réalisée lorsque l'organe d'actionnement (119') est relâché, afin d'amener vers le moteur à air comprimé l'air comprimé introduit et stocké dans la ou les chambres pneumatiques pour l'opération de rivetage proprement dite, et en ce qu'il est prévu, dans un raccordement pneumatique (51, 31, 14, 20, 116, 99) entre l'orifice d'entrée du moteur à air comprimé (37, 38), prévu pour la marche en sens inverse de celui-ci, et la source d'air comprimé, une soupape de réalimentation (12O), fermée, en position d'arrêt, apte à être actionnée par de l'air comprimé stocké dans les chambres pneumatiques, et destinée à amener, à partir de la source d'air comprimé, de l'air comprimé supplémentaire nécessaire au desserrage.
  2. Appareil de pose selon la revendication 1, caractérisé en ce que le corps de soupape (55), en position d'arrêt ou d'obturation, dépasse de l'enveloppe (33) de la soupape de commande (55) suivant un certain degré.
  3. Appareil de pose selon la revendication 2, caractérisé en ce qu'il est prévu, sur le côté de l'enveloppe de soupape (33), un levier d'actionnement (62) s'étendant au-dessus de la soupape de commande (55) et articulé de façon pivotante, qui, en présence d'une légère pression sur son extrémité libre, s'applique contre le corps de soupape (55) dépassant de l'enveloppe de soupape (33), moyennant quoi la soupape de commande (55) est apte à être actionnée.
  4. Appareil selon l'une des revendications 1 à 3, caractérisé en ce que la soupape de commande (55) est disposée dans une enveloppe de soupape (33) apte à pivoter autour de l'enveloppe (32) du moteur à air comprimé (37, 38).
  5. Appareil de pose selon l'une des revendications 1 à 4, caractérisé en ce que, par l'actionnement de la soupape de commande (55) avant l'opération de rivetage proprement dite, le raccordement pneumatique (64, 72, 73, 61, 60, 52, 56, 57, 58, 59) peut être réalisé entre un premier orifice d'entrée du moteur à air comprimé (37, 38) (pour une rotation vers la droite) et la source d'air comprimé, et en ce que, après achèvement de l'opération de rivetage, un raccordement pneumatique (116, 20, 14, 31, 51) peut être réalisé entre les chambres pneumatiques (88) du système de transmission pneumatique-hydraulique (C, B) et un second orifice d'entrée du moteur à air comprimé (37, 38) (pour une rotation vers la gauche).
  6. Appareil de pose selon l'une des revendications 1 à 5, caractérisé en ce que la soupape de commande (55) consiste en une soupape 3/2 voies.
  7. Appareil de pose selon l'une des revendications 1 à 6, caractérisé en ce qu'il est prévu, entre la paroi extérieure de l'enveloppe de moteur (32) et la paroi intérieure de l'enveloppe de soupape (33) apte à pivoter autour de celle-ci, un espace annulaire (52, 52'), rendu étanche des deux côtés, qui est relié en permanence, par un raccordement pneumatique (60, 61, 73, 72, 70, 64, 97, 93), à la source d'air comprimé, et dans lequel débouche un perçage (54) traversant la paroi de l'enveloppe de soupape (33) et renfermant de façon mobile le corps de la soupape de commande (55), et en ce que, à partir de ce perçage (54), un perçage de raccordement (56) mène à un second espace annulaire (57) rendu étanche des deux côtés et prévu entre la surface extérieure de l'enveloppe de moteur (32) et la surface intérieure de l'enveloppe de soupape (33) et, de là, des perçages de raccordement (58, 59) ménagés dans l'enveloppe de moteur (32) et dans l'une des brides d'appui (36) du moteur à air comprimé (37, 38) mènent au premier orifice d'entrée de celui-ci.
  8. Appareil de pose selon la revendication 7, caractérisé en ce les bords interne et externe du perçage (54) traversant la paroi de l'enveloppe de soupape (33) sont conçus comme un siège de soupape pour le corps de la soupape de commande (55), et ledit corps de soupape interrompt, au niveau du siège de soupape intérieur situé dans l'espace annulaire (52, 52'), le raccordement entre le premier orifice d'entrée du moteur à air comprimé (37, 38) et la source d'air comprimé, en position non actionnée, et réalise ledit raccordement en position actionnée, tandis qu'au niveau du siège de soupape extérieur, il réalise le raccordement entre le premier orifice d'entrée du moteur à air comprimé (37, 38) et l'atmosphère, en position non actionnée, et interrompt ledit raccordement en position actionnée.
  9. Appareil de pose selon l'une des revendications 3 à 8, caractérisé en ce que l'espace annulaire (52) prévu entre l'enveloppe de moteur (32) et l'enveloppe de soupape (33) est élargi (52'), dans la zone du perçage (54) recevant le corps de la soupape de commande (55), par une rainure annulaire ménagée dans la surface intérieure de l'enveloppe de soupape (33) et/ou dans la surface extérieure de l'enveloppe de moteur (32).
  10. Appareil de pose selon la revendication 1, caractérisé en ce que la soupape de commande (55') est apte à être actionnée par de l'air comprimé.
  11. Appareil selon la revendication 10, caractérisé en ce que la soupape de commande est intégrée dans la tête d'appareil (A) et se compose d'une enveloppe de soupape (33') renfermant, mobile coaxialement, un corps de soupape (55').
  12. Appareil selon la revendication 10 ou 11, caractérisé en ce que le corps (55') de la soupape de commande est apte à être actionné à l'aide d'un organe d'actionnement (62') disposé dans la zone de l'organe d'actionnement (119'), ou à proximité (128) de celui-ci, en vue de lancer l'opération de rivetage réalisée par l'appareil de pose.
  13. Appareil de pose selon l'une des revendications 10 à 12, caractérisé en ce que le corps de soupape (55') est apte à être actionné par la mise en circuit d'air conprimé à l'aide de son organe d'actionnement (62').
  14. Appareil selon l'une des revendications 10 à 13, caractérisé en ce que l'organe d'actionnement prévu pour la soupape de commande (55') est disposé dans un perçage (129) prévu dans la tête (A) de l'appareil de pose, au niveau ou à proximité de celle-ci, et en ce qu'il est prévu des moyens (62', 130) à l'aide desquels un courant d'air comprimé peut être arrêté.
  15. Appareil de pose selon la revendication 14, caractérisé en ce que l'organe d'actionnement se compose d'une ou plusieurs douilles (62') à l'aide desquelles, moyennant une pression du doigt, un ressort de pression (130) peut être amené en position de blocage et le courant d'air comprimé peut ainsi être arrêté.
  16. Appareil de pose selon l'une des revendications 10 à 15, caractérisé par un raccordement pneumatique (129, 133, 134, 144, 141, 138, 145, 135) de l'organe d'actionnement (62') vers le corps (55') de la soupape de commande, et de celui-ci (par 150, 58', 59) vers un orifice d'entrée menant au rotor (37) du moteur à air comprimé (37, 38).
  17. Appareil de pose selon la revendication 16, caractérisé en ce que le raccordement pneumatique entre l'organe d'actionnement (62') de la soupape de commande (55') et l'un des orifices d'entrée menant au rotor (37) du moteur à air comprimé (37, 38) possède lui-même un raccordement pneumatique (135, 146, 60', 61, 73, 72, 64) vers la source d'air comprimé.
  18. Appareil de pose selon l'une des revendications 10 à 17, caractérisé en ce que le corps (55') de la soupape de commande est apte à être maintenu en position de départ (position d'attente) à l'aide d'air comprimé.
  19. Appareil de pose selon la revendication 18, caractérisé en ce qu'il est prévu, entre le corps de soupape (55') et l'enveloppe de soupape (33'), un espace annulaire (138) fermé au niveau de son extrémité arrière, en ce que, dans cet espace annulaire (138), le corps de soupape (55') est rendu étanche (140), approximativement dans sa zone médiane, à l'encontre de l'enveloppe de soupape (33') et possède, derrière ce dispositif d'étanchéité (140), une partie étagée extérieure (147), et en ce que dans l'espace partiel de l'espace annulaire (138), ainsi défini, peut être introduit de l'air comprimé provenant du raccordement pneumatique (135, 146, 60', 61, 73, 72, 64) à la source d'air comprimé.
  20. Appareil de pose selon l'une des re6vendications 10 à 19, caractérisé en ce que, lors de la mise en circuit d'air comprimé, le corps de soupape (55') peut être amené dans sa position de commutation, en vue de commencer le serrage du rivet-écrou borgne, à l'aide de l'organe d'actionnement (62') de la soupape de commande et grâce au rapport de surface entre la surface avant (Fa) et la surface plus petite (Fc) de la partie étagée extérieure (147) du corps de soupape (55').
  21. Appareil de pose selon l'une des revendications 4 à 20, caractérisé en ce qu'il existe, à partir du second orifice d'entrée du moteur à air comprimé (37, 38), un raccordement pneumatique (51, 31, 14, 20, 116) vers l'une des connexions du dispositif de soupape (92), dont l'actionnement permet d'introduire, pour l'opération de rivetage proprement dite, de l'air comprimé dans la chambre pneumatique située sur le côté arrière du piston de pression pneumatique (82) du système de transmission pneumatique-hydraulique (C, B), et en ce que le dispositif de soupape (92) relie, en position de départ, la chambre pneumatique située sur le côté arrière du piston de pression pneumatique (82) à la conduite de raccordement pneumatique (51, 31, 14, 20, 116) menant au second orifice d'entrée du moteur à air conprimé (37, 38), et les sépare à l'état actionné.
  22. Appareil de pose selon la revendication 21, caractérisé en ce que le raccordement pneumatique entre le second orifice d'entrée du moteur à air comprimé (37, 38) et l'une des connexions du dispositif de soupape (92) passe par un perçage longitudinal (51) ménagé dans l'enveloppe de moteur (32), par l'espace (31) de l'enveloppe situé derrière le dispositif de traction (4, 15) prévu pour la broche filetée (7), il traverse le dispositif de traction (4, 15) et pénètre dans un espace annulaire (20) de l'enveloppe de la tête d'appareil (A) entourant celui-ci et rendu étanche dans les sens longitudinaux et, de là, passe par un perçage (116) ménagé dans l'enveloppe du système de transmission pneumatique-hydraulique (B, C).
  23. Appareil de pose selon la revendication 22, caractérisé en ce que le dispositif de traction (4, 15) est conçu en plusieurs parties et se compose essentiellement d'un élément de traction creux (4) dans la première extrémité duquel est vissée la broche filetée (7) dépassant de l'embouchure (2) de la tête d'appareil (A), et dans la seconde extrémité duquel est en prise un arbre (47) apte à être entraîné par le moteur à air comprimé (37, 38), et d'un piston de traction (15) entourant cet élément de traction (4) de façon annulaire, moyennant une sollicitation d'un espace d'ajustement (14), et mobile tout contre la paroi de l'enveloppe, étant précisé que l'élément de traction (4) porte, en amont du piston de traction (15) dans le sens de traction, une butée (27), que le piston de traction (15) peut reposer, dans le sens opposé sur une butée (19) et que l'espace d'ajustement (14) représente une partie du raccordement pneumatique entre le second orifice d'entrée du moteur à air comprimé (37, 38) et le dispositif de soupape (92).
  24. Appareil de pose selon la revendication 23, caractérisé en ce que le piston de traction (15) possède, dans le sens opposé au sens de traction, le prolongement cylindrique (16) respectant également l'espace d'ajustement (14) et à l'encontre duquel la chambre hydraulique (75) contenant la surface d'admission hydraulique du piston de traction (15) est rendue étanche à l'aide d'un joint d'étanchéité (sous forme de tige) disposé dans la butée (enveloppe annulaire 19), le perçage de raccordement (74) débouchant, à partir de l'espace hydraulique (69) du système de transmission pneumatique-hydraulique (C, B), dans la chambre hydraulique (75) tandis que le perçage de raccordement (116) menant au dispositif de soupape (92) débouche dans l'espace annulaire d'enveloppe (20) situé de l'autre côté de la butée (enveloppe annulaire) (19).
  25. Appareil de pose selon la revendication 23 ou 24, caractérisé en ce qu'il est prévu, en amont du piston de traction (15), dans le sens de traction, un piston de rappel annulaire (28), apte à être sollicité par de l'air comprimé dans le sens inverse du sens de traction, et disposé mobile tout contre la paroi d'enveloppe et l'élément de traction (4), et un espace annulaire (31) entouré par celui-ci et ouvert en direction du piston de traction (15) et, ainsi, en direction de l'espace d'ajustement (14), est relié à un perçage de raccordement ménagé dans l'enveloppe de moteur (32) et menant au second orifice d'entrée du moteur à air comprime' (37, 38), par un tube formant canal (51) traversant la chambre pneumatique (73), entre le piston de rappel (28) et l'enveloppe de moteur (32).
  26. Appareil de pose selon l'une des revendications 1 à 25, caractérisé en ce qu'il est prévu, entre le second orifice d'entrée du moteur à air comprimé (37, 38) et la source d'air comprimé, un raccordement pneumatique (51, 31, 14, 20, 116, 99) dans lequel peut être insérée la soupape de réalimentation (120) qui est fermée, en position d'arrêt, et qui est apte à être actionnée, une fois le rivetage achevé, à l'aide de l'air comprimé introduit et stocké auparavant dans le système de transmission pneumatique-hydraulique (C, B) pour l'opération de rivetage.
  27. Appareil de pose selon la revendication 26, caractérisé en ce que la soupape de réalimentation (120) possède un corps de soupape (125) conçu comme un piston compensateur dont la petite surface d'admission (F5) se trouve dans une chambre de soupape (123) placée au niveau du fond de l'enveloppe de soupape (98) et reliée en permanence à la source d'air comprimé, et dont la grande surface d'admission (F6) se trouve dans une chambre (88) apte à être reliée par le dispositif de soupape (92), une fois l'opération de rivetage achevée, à la chambre pneumatique du système de transmission pneumatique-hydraulique (B, C), située sur le côté arrière du piston de pression pneumatique (82).
  28. Appareil de pose selon la revendication 27, caractérisé en ce que la grande surface d'admission (F6) du corps de soupape (125) se trouve dans la chambre pneumatique (88) située en amont du piston de pression pneumatique (82).
  29. Appareil de pose selon la revendication 27 ou 28, caractérisé en ce que la course d'actionnement du corps de soupape (125) est réglable à l'aide d'une vis de réglage (127) accessible de l'extérieur, au fond de l'enveloppe de soupape (98), respectivement de la chambre de soupape (123).
  30. Appareil de pose selon la revendication 27 ou 28, caractérisé en ce que le corps de soupape (125) est mobile dans un cylindre de soupape (121) étagé, et en ce qu'un espace annulaire (126) relié, quand le corps de soupape (125) est relevé, à la chambre de soupape (123), au niveau du fond de l'enveloppe, c'est-à-dire à de l'air comprimé, est relié, par des perçages (124) ménagés dans le cylindre de soupape (121), à un espace annulaire (122) prévu dans la surface extérieure du cylindre de soupape (121) qui est elle-même reliée à un perçage de raccordement pneumatique (116).
  31. Appareil de pose selon les revendications 26 à 30, caractérisé en ce que la soupape de réalimentation (120) est une soupape 2/2 voies.
  32. Appareil de pose selon l'une des revendications 1 à 31, caractérisé en ce que le dispositif de soupape (92) est une soupape 4/2 voies.
EP84101932A 1983-02-26 1984-02-23 Appareil pneumatique-hydraulique pour la pose de rivets-écrous borgnes Expired - Lifetime EP0120309B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84101932T ATE71869T1 (de) 1983-02-26 1984-02-23 Pneumatisch-hydraulisches setzgeraet fuer blindnietmuttern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3306827A DE3306827C2 (de) 1983-02-26 1983-02-26 Pneumatisch-hydraulisches Setzgerät für Blindnietmuttern
DE3306827 1983-02-26

Publications (3)

Publication Number Publication Date
EP0120309A2 EP0120309A2 (fr) 1984-10-03
EP0120309A3 EP0120309A3 (en) 1986-05-14
EP0120309B1 true EP0120309B1 (fr) 1992-01-22

Family

ID=6191938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101932A Expired - Lifetime EP0120309B1 (fr) 1983-02-26 1984-02-23 Appareil pneumatique-hydraulique pour la pose de rivets-écrous borgnes

Country Status (5)

Country Link
US (1) US4612793A (fr)
EP (1) EP0120309B1 (fr)
JP (1) JPS59178148A (fr)
AT (1) ATE71869T1 (fr)
DE (1) DE3306827C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11673243B2 (en) 2018-09-05 2023-06-13 Milwaukee Electric Tool Corporation Blind rivet nut-setting tool

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3308915A1 (de) * 1983-03-12 1984-09-13 Alfred Honsel Nieten - und Metallwarenfabrik GmbH & Co, 5758 Fröndenberg Blindnietsetzwerkzeug zum setzen von gewindenietmuttern
DE3532932A1 (de) * 1985-09-14 1987-03-19 Schwab Maschbau Nietsetzwerkzeug
US4821555A (en) * 1988-01-27 1989-04-18 Lobster Tool Co., Ltd. Hydropneumatic gun for setting blind-rivet nuts
DE4406946C2 (de) * 1994-03-04 1998-11-19 Gesipa Blindniettechnik Blindnietmutter-Setzgerät
US5490311A (en) * 1994-09-08 1996-02-13 Huck International, Inc. Ergonomic installation tool with selectable vacuum pintail collector
US5579641A (en) * 1995-04-24 1996-12-03 Huck International, Inc. Air return piston for use in a fastener installation tool
WO1999004917A1 (fr) * 1997-07-28 1999-02-04 Ober Utensili Pneumatici S.R.L. Pistolet a riveter pneumatico-hydraulique
EP0936029B1 (fr) * 1997-12-12 2001-03-14 Herbert Schruff Dispositif pour la pose de rivets/écrous aveugles
EP0922536B1 (fr) * 1997-12-12 2003-03-05 Herbert Schruff Dispositif pour la pose de chevilles à expansion
DE29900048U1 (de) * 1999-01-06 2000-06-08 Ms Verwaltungs Und Patentgesel Nietsetzwerkzeug mit Drehumkehreinrichtung
CZ295112B6 (cs) * 1999-05-25 2005-05-18 Ms Nářadí, S. R. O. Zařízení pro ovládání pohybu tažného členu nýtovacího nástroje
US6487767B1 (en) * 2000-04-10 2002-12-03 Fatigue Technology, Inc. Method and apparatus for connecting a fastener element to a wall
JP2004188558A (ja) * 2002-12-13 2004-07-08 Nippon Pop Rivets & Fasteners Ltd ブラインドナット等のナット型固着具締結装置
US6962068B2 (en) * 2003-10-31 2005-11-08 Avk Industrial Products Nut insert installation system and method of use
US7140227B2 (en) * 2004-08-24 2006-11-28 Textron Fastening Systems Limited Pneumatically-operated repetition riveting tool
US7237413B2 (en) * 2005-04-26 2007-07-03 Acument Intellectual Properties Llc Setting tool
US20060291974A1 (en) * 2005-06-28 2006-12-28 Mcgee Thomas Nut insert
US20070269277A1 (en) * 2006-05-04 2007-11-22 Villanueva Ramon C Nut insert installation system and method of use
US7216520B1 (en) 2006-08-14 2007-05-15 Avk Industrial Products Cross-threading prevention apparatus for installing nut inserts
US7228607B1 (en) * 2006-09-20 2007-06-12 Pao Fang Liu Pneumatic hydraulic riveter
TW201028257A (en) * 2009-01-16 2010-08-01 Pao-Fang Liu Three-stage valve switch structure
DE102010022022B4 (de) * 2010-05-29 2012-01-19 Gesipa Blindniettechnik Gmbh Blindnietmuttern-Setzgerät
CN103157729A (zh) * 2011-12-14 2013-06-19 中核建中核燃料元件有限公司 一种格架外条带铆接枪
EP2689867A1 (fr) * 2012-07-27 2014-01-29 GESIPA Blindniettechnik GmbH Élément de liaison et appareil de fixation pour un élément de liaison
TW201706084A (zh) * 2015-08-13 2017-02-16 陳秀如 擊打機構內置式氣動工具馬達
CN106976044B (zh) * 2017-03-02 2023-04-25 杭州联伟科技有限公司 铆接工具附件及铆接工具
DE102017205464A1 (de) 2017-03-30 2018-10-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Setzen einer umformtechnisch gefügten Verbindung
TWM596672U (zh) * 2020-03-19 2020-06-11 索爾智慧機械有限公司 用於拉帽安裝工具的攜帶式測試儀器
DE102022116431A1 (de) * 2022-06-30 2024-01-04 SFS Group Germany GmbH Nietgerät in kompakter Bauweise
DE102022116433A1 (de) 2022-06-30 2024-01-04 SFS Group Germany GmbH Nietgerät mit verbesserter Handhabbarkeit

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7206720U (de) * 1972-11-09 Kuch E Handhebelnietgerät mit Gelenkhebelübersetzung zum Verarbeiten aller handelsüblichen Blind-Einnietmuttern bis Gewinde M 12 in Stahlausführung
US2283708A (en) * 1940-07-20 1942-05-19 Goodrich Co B F Apparatus for installing collapsible tubular rivets
GB612368A (en) * 1945-05-22 1948-11-11 Goodrich Co B F Improvements in or relating to apparatus for installing a tubular rivet
GB655512A (en) * 1948-01-23 1951-07-25 Chicago Pneumatic Tool Co Power-operated tool for setting flanged screw sockets
US2583733A (en) * 1948-01-23 1952-01-29 Chicago Pneumatic Tool Co Hydraulic tool for pulling clinch nuts
US2789619A (en) * 1954-05-27 1957-04-23 Hi Shear Rivet Tool Company Fluid actuated pulling and rotating tool
US3181338A (en) * 1962-07-26 1965-05-04 Standard Pressed Steel Co Power hand tool
GB1272771A (en) * 1968-08-08 1972-05-03 Avdel Ltd Fastener placing apparatus
US3555649A (en) * 1968-10-07 1971-01-19 Aerpat Ag Adaptor for pneumatically operated pulling tool
US3654792A (en) * 1969-07-25 1972-04-11 Briles Mfg Apparatus and method for installing blind fasteners
GB1327407A (en) * 1970-10-27 1973-08-22 Precision Screw & Mfg Tools for fixing tubular fasteners in position
DE7208625U (de) * 1971-03-08 1974-01-03 Avdel Ltd Vorrichtung zum Setzen einer Gewindemutter nach Art eines Blindnietes mit Kraftantrieb und damit verwendbarer Gewindemutterrohling
DE2320080C3 (de) * 1973-04-19 1981-08-06 Elflein, Lorenz, 8740 Bad Neustadt Setzwerkzeug für Blindnietmuttern
FR2275282A1 (fr) * 1974-06-19 1976-01-16 Chaussy Albert Sertisseur oleo-pneumatique
DE3112711C2 (de) * 1981-03-31 1984-11-08 Gesipa Blindniettechnik Gmbh, 6000 Frankfurt Pneumatisch-hydraulisches Blindnietgerät
DE3216696A1 (de) * 1981-05-15 1982-12-02 Desoutter Ltd., London Kraftwerkzeug
DE3219716A1 (de) * 1982-04-24 1983-12-01 Alfred Honsel Nieten - und Metallwarenfabrik GmbH & Co, 5758 Fröndenberg Geraet zum setzen von gewindenietmuttern
DE3215468A1 (de) * 1982-04-24 1983-11-03 Alfred Honsel Nieten - und Metallwarenfabrik GmbH & Co, 5758 Fröndenberg Geraet zum setzen von gewindenietmuttern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11673243B2 (en) 2018-09-05 2023-06-13 Milwaukee Electric Tool Corporation Blind rivet nut-setting tool

Also Published As

Publication number Publication date
EP0120309A2 (fr) 1984-10-03
EP0120309A3 (en) 1986-05-14
US4612793A (en) 1986-09-23
JPS59178148A (ja) 1984-10-09
DE3306827A1 (de) 1984-08-30
DE3306827C2 (de) 1986-05-07
ATE71869T1 (de) 1992-02-15

Similar Documents

Publication Publication Date Title
EP0120309B1 (fr) Appareil pneumatique-hydraulique pour la pose de rivets-écrous borgnes
EP0062206B1 (fr) Dispositif pneumatique-hydraulique pour la pose de rivets aveugles
DE1503076C3 (de) Steuereinrichtung an einem Druckluftnagler zum Steuern von einzelnen oder fortlaufenden Arbeitsspielen
DE4219032C2 (de) Pneumatisch betriebener Schraubendreher
DE60008330T2 (de) Angetriebenes Installationswerkzeug für Drahtwickelgewindeeinsätze
DE2807677B2 (de) Hydraulisches Schraubgerät
DE69635786T2 (de) Kolbenaufbau einer Maschine zum pneumatischen Eintreiben von Nägeln
DE3690236C2 (de) Nietvorrichtung
DE2316560B2 (de) Schrauber
DE3637823C2 (de) Hilfskraftbetätigtes Spannfutter
DE1603792A1 (de) Kraftbetaetigtes Werkzeug zum Anzichen und Sichern einer Mutter auf einem Schraubenbolzen
DE2617610B2 (de) Drehmomentbegrenzungs- und Trennkupplung
DE2702438A1 (de) Blindnietwerkzeug
DE1478914B2 (de) Motorschrauber für Schrauben, die das Gewinde im Schraubenloch selbst schneiden
DE2137385A1 (de) Gesteinsbohrer
DE19519543C2 (de) Druckmittelzange
DE3725240C2 (fr)
DE2329564C3 (de) Umsteuereinrichtung fur die Umkehr der Drehrichtung eines mit Druckmittel beaufschlagten Antriebsmotors fur ein Werkzeug Gardner Denver Co , Quincy, 111 (V St A)
DE2557114A1 (de) Kupplung mit drehmomentbegrenzung
DE1703418C3 (de) Schraubvorrichtung mit einer Schraubenzuführeinrichtung und einem Schraubenhalter
DE3216696C2 (fr)
DE3941340C2 (de) Absperrventil
DE1814349A1 (de) Werkzeug
DE2854953C2 (de) Bohrhammer
DE1603792C (de) Kraftbetatigtes Werkzeug zum Anziehen und Sichern einer Mutter auf einem Schrau benbolzen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19861029

17Q First examination report despatched

Effective date: 19880118

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 71869

Country of ref document: AT

Date of ref document: 19920215

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19930216

Year of fee payment: 10

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940228

Ref country code: CH

Effective date: 19940228

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19940228

Year of fee payment: 11

Ref country code: LU

Payment date: 19940228

Year of fee payment: 11

EPTA Lu: last paid annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EAL Se: european patent in force in sweden

Ref document number: 84101932.6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19950213

Year of fee payment: 12

Ref country code: GB

Payment date: 19950213

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19950216

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19950223

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950224

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19950228

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19950901

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19950901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960223

Ref country code: AT

Effective date: 19960223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19960228

BERE Be: lapsed

Owner name: GESIPA BLINDNIETTECHNIK G.M.B.H.

Effective date: 19960228

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19961031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST