EP0062206A2 - Dispositif pneumatique-hydraulique pour la pose de rivets aveugles - Google Patents

Dispositif pneumatique-hydraulique pour la pose de rivets aveugles Download PDF

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Publication number
EP0062206A2
EP0062206A2 EP82102325A EP82102325A EP0062206A2 EP 0062206 A2 EP0062206 A2 EP 0062206A2 EP 82102325 A EP82102325 A EP 82102325A EP 82102325 A EP82102325 A EP 82102325A EP 0062206 A2 EP0062206 A2 EP 0062206A2
Authority
EP
European Patent Office
Prior art keywords
piston
blind riveting
compressed air
blind
pressure
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.)
Granted
Application number
EP82102325A
Other languages
German (de)
English (en)
Other versions
EP0062206A3 (en
EP0062206B1 (fr
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 AT82102325T priority Critical patent/ATE13825T1/de
Publication of EP0062206A2 publication Critical patent/EP0062206A2/fr
Publication of EP0062206A3 publication Critical patent/EP0062206A3/de
Application granted granted Critical
Publication of EP0062206B1 publication Critical patent/EP0062206B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/22—Drives for riveting machines; Transmission means therefor operated by both hydraulic or liquid pressure and gas pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/105—Portable riveters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
    • B21J15/32—Devices for inserting or holding rivets in position with or without feeding arrangements
    • B21J15/326—Broken-off mandrel collection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53717—Annular work
    • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
    • Y10T29/5373—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
    • Y10T29/53739—Pneumatic- or fluid-actuated tool
    • Y10T29/53743—Liquid
    • Y10T29/53748—Liquid and gas

Definitions

  • the invention relates to a pneumatic-hydraulic blind riveting device for setting blind rivets consisting of a rivet sleeve and a tear-off mandrel with a pneumatic cylinder in which a plunger and a plunger rigidly connected to it and sealed and immersed in a subsequent hydraulic chamber can be moved back and forth, and with a device head adjoining the hydraulic chamber, in which a pulling device carrying the feed mechanism for gripping the pulling mandrel can be moved back and forth in a pneumatically-hydraulically controlled manner, wherein a passage channel is provided in the device head for ejecting the pulling mandrels torn off during the riveting process to the rear.
  • Such a blind riveting device is known for example from DE-PS 24 19 190.
  • the traction consists essentially of a piston which can be sealed in a cylinder space of the device head, which rests in the rest position of the device on a stop formed in the cylinder space and which has a piston shaft on each side, of which the piston located on the side of the mouthpiece of the device head Carries the feed mechanism and the other protrudes into an opening provided on the side of the device head opposite the mouthpiece and aligned with it.
  • the passage channel for the off Throw of the pull mandrel torn off during each riveting process passes through the piston and its two piston shafts.
  • the cylinder space of the device head is connected to a hydraulic chamber on the side of the piston facing the mouthpiece.
  • the compressed air preferably escapes from the pneumatic cylinder via a quick exhaust valve and all parts can be returned to their starting position.
  • the torn mandrel is then still in the passage channel of the pull piece formed from the piston displaceable in the device head together with its piston shafts, so that the operator of the device must first make a pivoting movement in order to Eject the mandrel from the passage in the device head.
  • a device has therefore already been proposed in which an air duct connected to a compressed air source opens into the passage channel of the blind riveting device behind the clamping jaws of the chuck mechanism in such a way that a compressive force is exerted on the tension mandrel lying in the passage channel, which compresses the torn mandrel into a Conveyor arranged at the end of the passage channel transported.
  • This known device has the disadvantage that the compressed air supply takes place in the area of the feed mechanism, as a result of which a special design of the feed mechanism and the actuating device for the feed mechanism is required. Furthermore, the air connection must participate in the axial movement of the chuck mechanism during the riveting process, so that a particularly robust design of the feed line is necessary.
  • Another disadvantage of the known device is that the action of the compressed air introduced into the passage channel also counteracts the newly inserted mandrel is directed for the next riveting process so that it can be pushed out of the chuck mechanism again.
  • DE-OS 28 27 904 which is designed as an additional device for pneumatically operated blind riveting devices and consists of a collecting container which can be attached tightly to the device head of the blind riveting device and which, preferably in its removable end cover, has a vacuum system operated by compressed air contains, which can be connected via a connecting line to a compressed air source, which is preferably also that of the blind riveting tool.
  • a vacuum is generated in this container by the vacuum system contained in the collecting container, which then pulls the torn mandrel out of the chuck mechanism through the passage channel in the device head and hurls it into the collecting container.
  • any (pneumatically) operated blind riveting tool can be retrofitted in a simple manner by only placing the container containing the vacuum system tightly on the device head and a connecting line between the connection of the vacuum system and the compressed air source, that is to say preferably the part of the connecting nipple which carries compressed air of the blind riveting tool is connected.
  • this additional device like the previously briefly described device, requires additional energy because compressed air must not only be provided for the actual riveting process but also for the ejection or suction of the torn mandrel, and the production and provision of compressed air is known to be expensive.
  • the vacuum system In order to maintain the negative pressure in the collecting container during operation, the vacuum system must be constantly supplied with compressed air; this creates a constant noise nuisance for the operator as well as a disturbing draft of the escaping air.
  • the connecting line between the vacuum system in the collecting container and the compressed air connection which must always be installed on the outside of the device when retrofitting a blind riveting device, can be a hindrance.
  • the continuous operation of the vacuum system can result in the advantage that a blind rivet inserted into the mouthpiece is held in the mouthpiece by the negative pressure generated in the device head before its mandrel is gripped by the chuck mechanism.
  • this small advantage is generally not related to the high energy consumption and the annoyance caused by the constantly generated compressed air. In certain ways of working, it can even turn into a disadvantage; namely, if the blind rivets are inserted into the material to be riveted, the rivet can move as the blind riveting tool approaches due to the continuous operation of the Vacuum system can be pulled out of the rivet hole again.
  • the object of the invention is, while avoiding the disadvantages described, to integrate a device for ejecting or extracting the mandrel torn off during the riveting process into the blind riveting device.
  • the suction or blowing out of the mandrel should take place automatically after each riveting process, but as energy-saving as possible.
  • the compressed air required for the riveting process should also be able to be used for suctioning off the rivet mandrels torn off during the riveting process.
  • the blind riveting device should not only allow the torn-off rivet mandrel to be sucked backwards into a collecting container provided at the end opposite the mouthpiece of the device head, but also to allow the torn-off rivet mandrel to be ejected to the front through the mouthpiece.
  • the device should also be designed for certain applications so that it can keep the rivet ready before the riveting process in the mouthpiece with a constant metered supply of compressed air.
  • the entire blind riveting device should be compact in terms of its outer dimensions and relatively small, and light in weight, yet powerful, and in particular be able to process all commercially available rivets with rivet diameters of up to 1/4 inch.
  • This object is achieved according to the invention in that the compressed air introduced to carry out a riveting process in a manner known per se into the pneumatic chamber located behind the pressure piston after the riveting process has been carried out, by reversing a valve via holes provided in the blind riveting device into the passage channel.
  • the suction device for the torn off mandrels is thus integrated into the actual blind riveting device, and the compressed air that is necessarily required to carry out the riveting process is advantageously used twice, namely for the riveting process and for suctioning the mandrel.
  • the suction process is carried out automatically after the riveting process, but saves energy because compressed air does not have to be supplied separately for suction.
  • the intermittent operation of the compressed air for riveting and suctioning the mandrel also saves energy compared to continuous operation according to the prior art; the noise and train annoyance of the operator is greatly reduced.
  • compressed air introduced into the pneumatic chamber located behind the pressure piston after the riveting process has been carried out by reversing a valve through holes provided in the blind riveting device through a nozzle located behind the mandrel in the ejection direction into the passage channel.
  • the compressed air emerging from the nozzle at high speed creates a suction in the through-channel, which sucks the mandrel as soon as it is released by the chuck mechanism and transports it back out of the through-channel.
  • a nozzle tube is arranged concentrically in the passage channel to the inner wall of the passage channel, the end facing away from the feeding mechanism is widened radially in the direction of the wall of the passage channel and thus forms the nozzle, wherein the compressed air through a bore in the wall of the passage channel into the Gap between the inner wall of the passage channel and the nozzle tube can be introduced.
  • the passageway is formed by a hollow cylindrical pull piece arranged coaxially in the device head, which carries the chuck mechanism at one end and a pulling piston which can be displaced tightly in the device head at its other end, and by a pulling piston from the side of the device Pulling piston pushed into the pull piece pressure tube that pierces the end cover of the device head.
  • the nozzle tube can rest with its one end sealingly on a pressure bush arranged inside the tension piece, resting on the chuck jaws of the chuck mechanism and with its widened end forming the nozzle, it can protrude into the pressure pipe, with a nozzle pipe surrounding the pressure pipe and the pressure pipe Compression spring is arranged.
  • the suction device can thus be set up in an advantageous manner in the blind riveting device using components already present in the blind riveting device and inserting only relatively few additional components and thus in a space-saving and cost-effective manner.
  • the construction of the blind riveting tool remains compact despite the additionally integrated device and is nevertheless powerful.
  • a further piston is preferably assigned to the pull piston, by means of which the compression spring can be relieved. This avoids a lifting movement of the traction piston when the riveting tool is depressurized, which could lead to a vacuum or to air ingress in the hydraulic chamber.
  • the tension piece can advantageously be below the tension piston be surrounded by a cylinder sleeve, which at its end facing the pulling piston has a radially inwardly directed shoulder, against which the pulling element can be moved tightly, and otherwise leaves an annular space to the pulling element, into which the housing bore for the supply of compressed air opens;
  • the traction piece in the area of the bore in the traction piece for passing on the compressed air to the nozzle, can be surrounded by an annular piston which is in the starting position of the traction piece outside the cylinder sleeve and which, by means of recesses, creates a connection between the space surrounding it and the bore in the traction piece and is in the retracted state of the pull piece within the cylinder sleeve and the bore rests against the surrounding space sealing against the wall of the cylinder sleeve.
  • the compressed air introduced to carry out the riveting process and, after completion of the riveting process, redirected by reversing a valve into the aforementioned housing bores, is initially briefly stored and only admitted into the nozzle according to the invention when the pulling device and with it the chuck mechanism still holding the torn off pulling mandrel have almost returned to their starting position, so that the suction effect of the compressed air emerging from the nozzle first and then is fully effective when the torn mandrel is released by the feed mechanism.
  • the housing bore guiding the compressed air for the suction process opens via a puncture in the cylinder sleeve into the annular space formed in the retracted state of the pull piece between the shoulder of the cylinder sleeve lying close to it and the annular piston.
  • the reversed compressed air is initially also stored in this annular space, and the compressed air thus acting on the annular piston advantageously supports the return of the pulling device and the chuck mechanism to its starting position before the compressed air is passed on to the nozzle in the passage channel.
  • the passage channel preferably opens into a collecting container which is mounted on the device head and has a connection to the atmosphere; the torn-off and sucked-off mandrels can be collected in a collecting container in a known manner.
  • the nozzle tube can be removed to the front by the pulling element, and the blind riveting device can thus be removed without the nozzle tube with a mandrel ejection through the mouthpiece be operated forward.
  • a collecting container, into which the passage channel opens, can be firmly connected to the device head in a manner known per se.
  • the collecting container preferably consists of a cup with a suitably shaped sleeve pushed over it, both of which have at least one window-like opening in their wall, which can be closed or covered by rotating the sleeve against the cup, so that the collecting container is emptied in a convenient manner can be.
  • the collecting container has air outlet openings in its bottom.
  • the collecting container is preferably made of plastic; its base can be cut out in a circle, and a baffle plate with passage openings is then held by the remaining base ring.
  • An adjustable pressure relief valve can be arranged in the pneumatic connection between the compressed air connection and the passage channel.
  • the area sizes of the ring areas above and below the pressure piston are preferably approximated to one another to approximately the same values.
  • the approximation of the area sizes of the annular surfaces above and below the pressure piston is achieved by means of a compensating piston which, on the one hand, is fastened to the cylinder pot base and, on the other hand, can protrude coaxially with the latter into the plunger piston into the region of the flange of the handle facing away from the device head.
  • the pneumatic-hydraulic blind riveting device consists of the device head A, the handle B enclosing the hydraulic part of the drive system and the pneumatic part C of the drive system.
  • the device head A consists of an essentially hollow cylindrical housing part 1, preferably made of hard-coated aluminum, in the front end of which a sleeve 3 carrying the mandrel receiving the mandrel of a blind rivet to be riveted and a sleeve 3 with respect to the housing part 1 screwed inside diameter reduced by a certain amount.
  • the sleeve 3 is preferably made of steel; the mouthpiece 2 can advantageously be exchangeable for different rivet diameters.
  • the steel sleeve 3 can have a hole on the side or, preferably opposite one another, two side holes which serve to promote the ejection of the torn rivet mandrel to the rear when the blind riveting tool is in contact with the blind rivet head and also to enable the chuck jaws to be oiled without disassembly.
  • a hollow cylindrical tension piece 4 Inside the steel sleeve 3 and coaxially to it is a hollow cylindrical tension piece 4, the outer diameter of which is significantly smaller than the inner diameter of the sleeve 3 and which extends far into the housing part 1 (approximately to half its length).
  • the pulling piece 4 At its front end facing the mouthpiece 2, the pulling piece 4 carries the chuck housing 5 with the chuck jaws 6 for gripping the pulling mandrel of a blind rivet to be riveted. Within the housing part 1, the pull piece 4 is guided several times tightly; Thus, behind the connection point between the housing part 1 and the sleeve 3 is a wiper ring 7 which bears against the housing wall with its outer diameter and which has an annular groove in its inner surface which receives an O-ring 8 which lies sealingly on the pulling element 4.
  • a thin-walled cylinder At a distance from the scraper ring 7 is a thin-walled cylinder with its outer surface resting against the housing wall 1 sleeve 9, the inner diameter of which is reduced at its rear end facing away from the mouthpiece 2 by a shoulder 10 to the outer diameter of the pulling member 4.
  • the cylinder sleeve 9 rests with its shoulder 10 on a casing ring 12 which is fixedly arranged in the housing part 1 and which bears against the housing wall 1 with an O-ring 13 and is sealed against the tension piece 4 with a rod seal 14.
  • annular pulling piston 15 is formed in one piece with the pulling piece 4 or is fixedly connected, preferably screwed, the outer surface of which is sealed against the housing wall 1 by means of a piston seal (groove ring) 17.
  • a piston seal groove ring
  • the pulling piston 15 rests with its one annular surface on the casing ring 12.
  • An annular piston 18 is fastened behind the scraper ring 7 to the hollow cylindrical tension piece 4 with the aid of a securing ring 19.
  • the outer diameter of this annular piston 18 is significantly smaller than the inner diameter of the housing part 1 surrounding it, and it is approximately equal to the inner diameter of the cylinder sleeve 9.
  • a recess 20 in the inner surface of the annular piston 18 creates an annular space 20 which surrounds the pulling element 4 and which is characterized by an or a plurality of bores 21 in the cylinder wall of the tension member 4 is connected to the interior thereof and also in the starting position of the device (Fig.
  • annular piston 18 moves into the cylinder sleeve 9 during an actuating stroke of the pulling element 4, the O-ring 22 then sealing abuts the inner wall of the cylinder sleeve 9 and tightly separates the annular spaces located in front of and behind the annular piston 18 within the cylinder sleeve 9.
  • a pressure bushing 23 at the end facing the mouthpiece 2, the pressure ring bushing 23 resting with its front ring edge on the chuck jaws 6.
  • the pressure bushing 23 is guided at least over part of its length on the side facing the mouthpiece 2 within the pulling element 4 by means of a sliding fit.
  • the nozzle tube 24 protruding into the pressure tube 26 is at its outer end toward the inner surface of the pressure Tubes 26 expanded and forms a fine nozzle 27 for the passage of air at this point, as will be described in more detail below.
  • a compression spring 28 Arranged around the nozzle tube 24 is a compression spring 28, which is supported on the one hand on a spacer ring 29 arranged behind the flange 25 of the nozzle tube 24 and on the other hand on the ring surface of the pressure tube 26 projecting into the pull piece 4, thereby sealing the flange 25 of the nozzle tube 24 presses the annular surface of the pressure bush 23.
  • the pressure pipe 26 protrudes through a central opening in the end cover 30 (designed as an end screw) of the housing part 1 into a collecting container 31 fastened to the housing part 1.
  • the pressure pipe 26 is through a into the central opening of the cover 30 inserted grommet / sealing.
  • a sealing ring 33 between the wall of the housing part 1 and the end cover 30 ensures a tight closure of the interior of the housing to the outside.
  • the working piston of the actuating device for the riveting process and the tearing off of the rivet mandrel is divided into a basket arrangement which consists of an annular return piston 34, compared to that of a prior art blind riveting tool (working piston 5 according to DE-PS 24 19 190).
  • the pull piston 15 with the pull piece 4 and the pressure pipe 26 Under the pressure of the compression spring 28, when the blind riveting device is not connected to the compressed air source, the pressure tube 26 and the return piston 34 can be moved in the direction of the end cover 30, while the pulling piston 15 remains in position with the pulling element 4, that is do not perform any lifting movement.
  • the collecting container 31 consists of a plastic cup 95 which widens slightly conically from the housing part 1 and over which an equally conically shaped plastic sleeve 96 is pushed.
  • the cup 95 and the sleeve 96 each have at least one window-like opening 97 on their circumference. By mutually rotating the cup 95 and the sleeve 96, these openings 97 can be closed or made to coincide in order to be able to empty the collecting container 31.
  • the floor of the plastic cup 95 is cut out in a circular manner in the exemplary embodiment, and the remaining bottom ring 98 and an undercut in the inner wall of the cup hold a baffle plate 101, preferably made of sheet steel, provided with small air outlet openings 100, against which the tension mandrels thrown into the collecting container 31 collide.
  • the air outlet openings 100 are preferably provided on a circular line or an annular region.
  • the collecting container 31 can be firmly connected, preferably screwed, to the housing part 1.
  • the plastic cup 95 has an undercut 99 at its open end or to be connected to the housing part 1, behind which an annular flange 102 of the end cover 30 engages.
  • the cup 95 together with the sleeve 96 fits into a step 103 provided on the housing part 1.
  • the collecting container 31 is then screwed to the housing part 1 via the end cover 30.
  • Below the end cover 30 is against a shoulder of the outer wall of the pressure tube 26, preferably fixed there or in a recess in the same, the return piston 34, which is sealed against the housing wall 1 by a groove ring 36.
  • the return piston 34 is acted upon by compressed air from its rear side and is in the advanced state in contact with the pull piston 15.
  • the gap 40 widens at the joint between the handle B and the device head A on the side facing the collecting container 31 to a cavity 45, which is sealed to the outside by a flat seal 46 at the joint between the handle B and the device head A and through a bore 47 in the wall of the device head A has a connection with an annular space 48 formed by a recess between the end cover 30 and the housing wall 1 or between the end cover 30 and the return piston 34.
  • the extension 39 there is a cylindrical bore in the exemplary embodiment, which forms the hydraulic chamber 49, which has a throttle check valve 50 arranged on its base and a bore 51 with the annular hydraulic chamber 52 between the casing ring 12 and the tension piston 15 in the housing part 1 connection .
  • a refill hole for the hydraulic chamber 52 is provided in the housing wall 1, which is sealed by a refill screw 53 and with the help of a sealing ring 54. Hydraulic medium can be refilled easily through this refill hole if the refill screw 53 has to be removed without the need for laborious assembly work.
  • the throttle check valve 50 on the bottom of the hydraulic chamber 49 consists essentially of a cylindrical valve body 55 which is sealed on its outer surface by a sealing ring 56 against the wall of the hydraulic chamber 49 and a passage opening 57 for the bore 51 in the housing wall in connection therewith Has hydraulic medium.
  • a throttle disc 58 with a very small passage or throttle opening 59 is inserted and secured against falling out by a retaining ring 60 inserted into a groove in the cylindrical recess.
  • the cylinder pot 64 of the pneumatic part C of the drive system is connected to the flange 62 of the handle B facing away from the device head A by means of eight long screws 63.
  • the cylinder pot 64 is preferably made of several pieces and is advantageously also made of plastic.
  • the screws 63 are arranged so that they are not visible and the screw heads are sunk into a base plate 104, which is placed against the bottom of the cylinder pot and is designed as a metal plate, and are covered by a rubber strip 65 running around the bottom of the cylinder pot.
  • the device can advantageously be placed upright on the bottom of the cylinder pot or the rubber stand 65.
  • a compensation piston 66 which is open on both sides and ends with the cylinder pot bottom, is tightly fastened and projects through the entire cylinder pot 64 into the flange part 62 of the handle B.
  • the compensating piston 66 is screwed from the outside to the cylinder pot base and the base plate 104 by a hollow screw 105.
  • annular pneumatic pressure piston 67 Arranged in the cylinder pot 64 is an annular pneumatic pressure piston 67, which is sealed on its outer circumference by means of an O-ring 68 inserted in a circumferential annular groove, and the inside diameter of which is larger than the outside diameter of the compensating piston 66.Coaxial to the compensating piston 66 and the pressure piston 67 is firmly connected to the latter, a hollow plunger 69, which projects with its closed, free end through the central opening of the sealing ring holder 41 into the hydraulic chamber 49 filled with hydraulic medium.
  • the hydraulic chamber 49 is through a rod seal 70 between the sealing ring socket 41 and the plunger 69 against the pneumatic cylinder pot 64 and through the already mentioned sealing ring 44 between the outer wall of the housing extension 39 and the sealing ring socket 41 screwed onto it against the gap 40 between the housing extension 39 and the handle B sealed.
  • a guide ring 72 for the plunger 69 is arranged between the rod seal 70 and a radially inwardly projecting extension 71 of the seal ring holder 41.
  • a guide ring 72 for the plunger 69 is arranged on the side of the extension 71 facing the pneumatic cylinder 64 there is a groove ring 73 which tightly surrounds the plunger 69 and seals the pneumatic chamber 83.
  • the wall of the compensating piston 66 which projects into the hollow plunger 69 while maintaining a radial space, is reinforced at its free end almost to the inside diameter of the plunger 69, and a sealing ring 74 inserted into an annular groove of this reinforcement lies sealingly against the inner wall of the plunger 69 .
  • the open end of the plunger 69 connected to the annular pneumatic pressure piston 67 is inserted into the central opening of the pressure piston 67.
  • the pneumatic control for the drive of the device is accommodated in the lower part of the handle B and its flange 62 connected to the cylinder pot 64, as shown in the drawing. To explain the same reference is also made here to FIGS. 3a and 3b.
  • a 4/2-way pneumatic valve 77 is accommodated transversely a control cylinder 78 and a spool 79.
  • the input connection of the 4/2-way valve 77 is connected to a compressed air hose 82 which is attached to the outside of the flange 62 by means of a connecting sleeve and a connecting sleeve 81 and which does not show in FIGS. 1a and b and in FIGS. 2a and b, but in 3a and 3b indicated compressed air source Q leads, connected;
  • the space 40 which is always pressurized with compressed air when the device is connected to the compressed air source, has a connection with the pneumatic line between the handle B and the surrounding housing extension 39 and from there via the bore 47 to that between the end cover 30 and the return piston 34 annular space 48 located in the device head.
  • the two other connections of the 4/2-way valve 77 are connected to one of the pneumatic chambers located in the cylinder pot 64 in the actuating direction of the pressure piston 67 upstream or downstream of the latter.
  • the fourth connection of the 4/2-way valve 77 represents a connection to the atmosphere.
  • the pneumatic chamber 83 lying in front of the pressure piston 67 in the actuating direction of the pressure piston 67, that is to say partially closed by the flange 62 of the handle B, is via a bore 84 in the handle B.
  • the two pneumatic chambers 83 and 88 are connected to one another, and the intermediate space 40 is connected to the compressed air connection 82.
  • the actuating valve 91 which is designed as a 2/2-Vege valve, switches the 4/2-way valve 77 via a corresponding control line 76, and the pneumatic chambers 83 and 88 are thereby separated from one another , and the pneumatic chamber 88 located behind the pressure piston 67 is connected to the compressed air connection 82.
  • the space 40 always remains connected to the compressed air connection 82.
  • a is in the flange portion 62 of the handle B.
  • Pressure relief valve 92 is arranged, which can establish a connection in front of the intermediate space 40 to the pneumatic chamber 83 located in front of the pressure piston 67 via a bore 109.
  • the pressure relief valve 92 is adjustable from the outside by an adjusting screw 92 '; if necessary, a precisely metered permanent connection between the intermediate space 40 and the front pneumatic chamber 83 can also be established.
  • the hand guard 106 is provided below the handle B, which extends in an arched manner from the front part of the device head A to the flange part 62 of the handle B and is fastened there in each case.
  • the hand guard 106 is also made of plastic and has at its other end a connection eyelet 107, which comprises the housing part 1 and rests on a step 108 of the steel sleeve 3 at its abutment with the housing part 1.
  • the entire device is light in weight and is nevertheless extremely powerful; it has a pulling force of approximately 1.5 tons and can process rivets with diameters up to 1/4 ".
  • plastic for various components has the particular advantage that they can be manufactured as molded plastic parts by injection molding, which can 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 of one of the polyamides.
  • the mandrel of a blind rivet to be riveted is now inserted through the mouthpiece 2 into the chuck mechanism 5, 6.
  • the control button 90 By depressing the control button 90, the working stroke (advance) of the blind riveting device is triggered, which is why reference is also made to FIG. 3b.
  • the valve body of the actuating valve 91 which is designed as a 2/2-way valve, is actuated by depressing the Control button 90 is lifted from its seat, and the 4/2-way valve 77 is reversed into its actuating position via the control line 76 by a pneumatic negative control.
  • the two pneumatic chambers 83 and 88 are pneumatically separated from each other in the cylinder pot 64 and the sewer pipe 80 is connected to the compressed air connection.
  • compressed air flows through the sewer pipe 80 into the pneumatic chamber 88 located behind the pressure piston 67 and acts on the surface F1 below (on the rear) of the pressure piston 67 and moves it together with the plunger 69 connected to it / est in the direction of arrow P in FIG 2a.
  • the plunger 69 is guided tightly on the reinforced free end of the compensating piston 66; at the same time, the compensation piston 66, which is open at the bottom of the cylinder pot, ensures pressure compensation in the interior space, which is expanded by the movement of the plunger 69 and is determined by the plunger 69 and the compensation piston 66.
  • the plunger 69 penetrates into the hydraulic chamber 49 filled with hydraulic medium.
  • the throttle disk 58 of the throttle check valve 50 is brought into contact with its seat on the valve body 55 by hydraulic action, and the hydraulic medium displaced during the further movement of the pressure piston 67 and plunger 69 up to the stop on the flange 62 passes throttled through the small opening 59 of the throttle disk 58, the through bore 57 of the throttle valve body 55 and the housing bore 51 in the Hy Draulikhunt 52 of the housing part 1 and there acts on the annular surface of the pull piston 15 in the pulling direction.
  • the pulling piece 4 which is firmly connected to it and carries the chuck mechanism 5, 6, and also the restoring piston 34 resting on it with the pressure tube 26 is counteracted by the pneumatic force acting on the restoring piston 34 by the stroke required for the riveting process (approximately 22 mm) moved in the pulling direction; the compressed air previously introduced into the space between the end cover 30 and the return piston 34 is thereby displaced.
  • the pulling mandrel of the blind rivet gripped by the chuck mechanism 5, 6 is torn off at its predetermined breaking point, forming the riveting point.
  • the annular piston 18 attached to its periphery also enters the inside of the cylinder sleeve 9 and lies sealingly against its inner surface.
  • FIGS. 2a and b This intermediate position of the blind riveting tool after the riveting process has just been carried out is shown in FIGS. 2a and b.
  • the 4/2-way valve 77 switches back to its starting position, again establishing a connection between the two pneumatic chambers 83 and 88 of the cylinder pot 64 is produced, and the one shown schematically in FIG. 3a begins Return of the blind riveting tool to its starting or standby position.
  • the compressed air previously introduced into the rear pneumatic chamber 88 now also reaches the front pneumatic chamber 83 and from there via the bores 84, 84 'and the puncture 86 in the cylinder sleeve 9 into the during the pulling movement between the shoulder 10 of the cylinder sleeve 9 and the annular piston 18 created, sealed annular space 93.
  • the annular piston 18 is arranged with its annular surface F4 pressurized by compressed air.
  • the compressed air from the previous riveting process is in the switching position described above, in which the cylinder spaces 83, 87 and 88 are connected, at the two ring surfaces F1 'and F1 of the pressure piston 67 and the ring surface F4 of the ring piston 18 at the same time.
  • Compressed air is always present on the return piston 34 with its annular surface F3 'in the connected state via lines 82, 40, 45 and 47, while on the other hand the hydraulic medium acts against the annular surface F3 of the tension piston 15.
  • the ring surfaces F1 ', F1, F2, F3, F3' and F4 are preferably flat surfaces.
  • the stored compressed air flows around the annular piston 18 and passes through the drawing not visible recesses in the annular space 20 within the annular piston 18 and from there through the bore 21 in the cylinder wall of the tension member 4 in its interior. There it rinses the nozzle tube 24 and emerges at high speed from the nozzle 27 formed by the end of the nozzle tube 24 with the inner surface of the pressure tube 26 and flows through the pressure tube 26 into the collecting container 31, from where it can escape into the atmosphere.
  • the escaping compressed air creates a suction directed in the direction of the collecting container 31, which sucks off the mandrel released by the chuck jaws 6 and conveys it into the collecting container 31.
  • the tension piece 4, the pressure bush 23, the nozzle tube 24 and the pressure tube 26, which are arranged coaxially to one another and one behind the other in the device head A, thereby form the passage 94 for the torn mandrel which is continuous from the chuck mechanism 5, 6 to the collecting container 31.
  • the compressed air supplied via the hose connection is sufficient as a result of the metered Adjustment of the overpressure valve 92 in order, on the one hand, as described above, to hold the return piston 34 in the advanced position in contact with the pulling piston 15 and thus the blind riveting tool in the ready position and on the other hand through the outlet from the nozzle 27 via the above-mentioned path in the passage 94 and thus to generate a negative pressure on the mouthpiece 2, which holds the blind rivet inserted into the mouthpiece 2 in place, in which case, however, a constant, however, limited compressed air supply is required.
  • the blind riveting device according to the invention can be converted by a simple measure - turning the adjusting screw 92 '- from a device with intermittent compressed air supply, in which the inserted blind rivets are not held in the mouthpiece 2 by negative pressure, into a device with a constant, but in comparison compressed air supply reduced to the prior art, in which the blind rivets are held in the mouthpiece 2 by negative pressure.
  • the blind riveting device according to the invention can be further transformed in an advantageous manner. Under certain conditions, e.g. for reasons of space, ejecting the mandrels to the rear can be undesirable and even impossible.
  • the blind riveting device can then be quickly and easily transformed into a device with the mandrels ejected to the front, ie through the mouthpiece 2.
  • the steel sleeve 3 with the pressure bush 23 and the chuck mechanism 5, 6 is unscrewed from the device head A and the nozzle tube 24 is removed to the front by the pulling element 4.
  • the collecting container 31 can then start to gain space to be assembled.
  • the compressed air introduced (already used once) from the pneumatic cylinder 64 into the passage 94 after the riveting process has been completed does not have to escape to the rear through a nozzle but also flows out through the mouthpiece 2 to the front, whereby it exerts pressure on the nozzle Feed mechanism 5, 6 releases released mandrel and throws it out of the mouthpiece 2 with reduced force for safety reasons.
  • the present invention it has been possible to integrate an automatic suction or ejection device for the mandrel torn off during the riveting process into the actual blind riveting device in a space-saving manner.
  • the compressed air introduced into the blind riveting device to effect the riveting process is not immediately released into the atmosphere after the riveting process has been completed, but is diverted and initially stored briefly until shortly before the resetting of the pulling device and the chuck mechanism in the starting position and then either through a nozzle or directly into the from the chuck mechanism to the collecting container for the torn through continuous passage, the compressed air is used twice in an energy-saving manner, namely for the actual riveting process and for the suction or ejection of the mandrel.
  • the riveting process and the suction or ejection process can take place in succession in a closed work cycle run, and the blind riveting tool is then immediately ready for use again.
  • the blind riveting device according to the invention can be converted in a simple and quick manner from the preferred suctioning off of the torn pull mandrels backwards to its forward ejection as required. Both systems are therefore combined in one and the same blind riveting tool.
  • the only intermittent supply of compressed air saves energy and costs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Forging (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Earth Drilling (AREA)
  • Compressor (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Tents Or Canopies (AREA)
EP82102325A 1981-03-31 1982-03-20 Dispositif pneumatique-hydraulique pour la pose de rivets aveugles Expired EP0062206B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102325T ATE13825T1 (de) 1981-03-31 1982-03-20 Pneumatisch-hydraulisches blindnietgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3112711A DE3112711C2 (de) 1981-03-31 1981-03-31 Pneumatisch-hydraulisches Blindnietgerät
DE3112711 1981-03-31

Publications (3)

Publication Number Publication Date
EP0062206A2 true EP0062206A2 (fr) 1982-10-13
EP0062206A3 EP0062206A3 (en) 1983-07-06
EP0062206B1 EP0062206B1 (fr) 1985-06-19

Family

ID=6128807

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102325A Expired EP0062206B1 (fr) 1981-03-31 1982-03-20 Dispositif pneumatique-hydraulique pour la pose de rivets aveugles

Country Status (6)

Country Link
US (1) US4515005A (fr)
EP (1) EP0062206B1 (fr)
JP (1) JPS57175042A (fr)
AT (1) ATE13825T1 (fr)
DE (1) DE3112711C2 (fr)
ES (1) ES8301701A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0120309A3 (en) * 1983-02-26 1986-05-14 Gesipa Blindniettechnik Gesellschaft Mit Beschrankter Haftung Pneumatic-hydraulic devices for setting blind nuts
GB2174943A (en) * 1985-05-10 1986-11-19 Avdel Ltd Breakstem fastener installation tool
EP0154280A3 (en) * 1984-03-05 1987-08-19 Huck Manufacturing Company Tool for setting pull-type fasteners
EP0264817A3 (fr) * 1986-10-21 1989-04-26 SPS TECHNOLOGIES, Inc. Outil pour installer un dispositif de fixation aveugle et dispositif de fixation modifié
EP1132160A1 (fr) * 2000-03-10 2001-09-12 GESIPA Blindniettechnik GmbH Organe hydropneumatique de rivetage aveugle
US7159291B2 (en) 2003-07-18 2007-01-09 Opt Engineering Co., Ltd. Continuous riveter and continuously caulking method of blind rivets
CN102744354A (zh) * 2012-05-23 2012-10-24 山东同力达智能机械有限公司 双作用短尾铆钉液压拉铆枪
EP1996350B1 (fr) * 2006-03-22 2014-10-22 Avdel UK Limited Clapet d'amortisseur hydraulique amélioré
EP3670022A1 (fr) * 2018-12-19 2020-06-24 TKR Spezialwerkzeuge GmbH Outil hydraulique ainsi que procédé de commande automatique des outils hydrauliques à entraînement pneumatique

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DE3125838A1 (de) * 1981-07-01 1983-01-27 Manfred 6200 Wiesbaden Schwab Blindnietgeraet mit nietstiftfoerderung
GB2116102A (en) * 1982-03-08 1983-09-21 Avdel Ltd Riveting tool
DE3400942C2 (de) * 1983-11-02 1995-11-09 Subotsch Verwaltungs Und Betei Druckeinstelleinrichtung für ein Blindnietgerät für Nieten unterschiedlicher Größe
GB2159752B (en) * 1984-06-05 1988-01-20 Tucker Fasteners Ltd Blind riveting machine
DE3664579D1 (en) * 1985-05-10 1989-08-31 Avdel Systems Ltd Breakstem fastener installation tool
DE3532932A1 (de) * 1985-09-14 1987-03-19 Schwab Maschbau Nietsetzwerkzeug
GB8608817D0 (en) * 1986-04-11 1986-05-14 Advel Ltd Fastener installation apparatus
US4887450A (en) * 1988-03-31 1989-12-19 Textron, Inc. Fastener stem collection apparatus and method
US4903522A (en) * 1989-01-11 1990-02-27 Thomas Miller Pop riveter tool
DE4023963A1 (de) * 1990-07-27 1992-01-30 Tucker Gmbh Bostik Blindnietsetzwerkzeug
US5086551A (en) * 1990-09-05 1992-02-11 Emhart Inc. Rivet setting tool
DE9214081U1 (de) * 1992-10-19 1992-12-10 MIKI-Plastik Oskar Milz KG, 6800 Mannheim Steuereinrichtung für die Luftzuführung bei einem Blindnietgerät
JPH0741362B2 (ja) * 1992-12-29 1995-05-10 オプトエンジニアリング株式会社 ブラインドリベットの連続かしめ方法及び連発リベッター
US5425164A (en) * 1993-09-01 1995-06-20 Textron Inc. Hand-tool system for installing blind fasteners
JP2824735B2 (ja) * 1994-04-02 1998-11-18 好高 青山 部品供給装置
US5383262A (en) * 1994-05-09 1995-01-24 Ebbert Engineering, Inc. Blind riveting system
USD371299S (en) 1994-09-08 1996-07-02 Huck International, Inc. Blind rivet installation tool
USD369733S (en) 1994-09-08 1996-05-14 Huck International, Inc. Blind rivet installation tool
US5490311A (en) * 1994-09-08 1996-02-13 Huck International, Inc. Ergonomic installation tool with selectable vacuum pintail collector
USD369732S (en) 1994-09-08 1996-05-14 Huck International, Inc. Blind rivet installation tool
DE29504316U1 (de) * 1995-03-16 1995-04-27 Maschinenbau Subotsch Verwaltungs- und Beteiligungsgesellschaft mbH, 65232 Taunusstein Nietsetzwerkzeug
US5647209A (en) * 1995-04-24 1997-07-15 Huck International, Inc. Fastener installation tool with positive pressure pintail removal system
US5579641A (en) * 1995-04-24 1996-12-03 Huck International, Inc. Air return piston for use in a fastener installation tool
US6519997B2 (en) 2001-01-03 2003-02-18 Allfast Fastening Systems, Inc. Rivet gun
USD462883S1 (en) 2001-02-14 2002-09-17 Emhart Llc Rivet setting tool
US6532635B1 (en) * 2002-03-01 2003-03-18 Huck International, Inc. Installation tool for pull type fasteners
AU2003294341A1 (en) * 2002-11-21 2004-06-18 Newfrey Llc Modular rivet tool
US6739170B1 (en) 2003-03-17 2004-05-25 Huck International, Inc. Offset nose assembly with improved deflector and guard assemblies
DE202004012268U1 (de) * 2004-08-05 2005-12-15 Miki Plastik Gmbh Blindnietsetzgerät mit einer Auswurfsicherung für abgetrennte Nietdorne
DE202004012269U1 (de) * 2004-08-05 2005-12-15 Miki Plastik Gmbh Blindnietsetzgerät
US7082657B1 (en) * 2005-02-17 2006-08-01 Yu-Ching Lin Automatic suction and repelling device for rivet gun
US20060180629A1 (en) * 2005-02-17 2006-08-17 Yu-Ching Lin Close connection device of lid for a used-nail cylinder of a rivet gun
US8307690B2 (en) * 2009-08-28 2012-11-13 Sps Technologies, Llc Hand-tool system for installing blind fasteners
US8365375B2 (en) * 2010-10-15 2013-02-05 Yu-Ching Lin Rivet gun with detachable pneumatic cylinder assembly
US8312756B2 (en) 2011-02-18 2012-11-20 Mark Douglas Swinford Hydropneumatic riveter
JP5874967B2 (ja) * 2011-12-08 2016-03-02 ポップリベット・ファスナー株式会社 ブラインドリベット締結工具
GB2500897B (en) * 2012-04-03 2014-08-27 Infastech Ip Pte Ltd Fastener installation tool
US9908233B2 (en) * 2013-07-09 2018-03-06 Arconic Inc. Fastener installation tool
DE102013012075B4 (de) * 2013-07-19 2025-11-20 Richard Bergner Holding GmbH & Co. KG Restbehälter für Stückabfälle, insbesondere für Restdorne von Blindnieten
US10226826B2 (en) 2013-10-22 2019-03-12 Milwaukee Electric Tool Corporation Hydraulic power tool
DE102013019518A1 (de) * 2013-11-22 2015-06-11 Tox Pressotechnik Gmbh & Co. Kg "Vorrichtung zum Anbringen eines Fügeelements an einem Bauteilabschnitt und Werkzeug"
EP3110580B1 (fr) 2014-02-26 2018-04-11 Arconic Inc. Outil d'installation de fixations avec manchons concentriques internes
US20150273569A1 (en) * 2014-03-25 2015-10-01 Yu-Tang Lin Barrel assembly for a rivet gun
CN205977914U (zh) 2015-05-06 2017-02-22 米沃奇电动工具公司 液压动力工具
DE112022002592T5 (de) 2021-06-21 2024-03-07 Milwaukee Electric Tool Corporation Systeme und verfahren zum auswerten von crimpanwendungen
DE102022116413A1 (de) * 2022-06-30 2024-01-04 SFS Group Germany GmbH Nietgerät mit Federelement integrierter Gewindespindel
CN116274839A (zh) * 2023-03-08 2023-06-23 瑞萨铆接紧固系统(苏州)有限公司 一种拉铆枪枪头抓取结构及抓取方法

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DE2537794C2 (de) * 1975-08-25 1985-09-26 Alfred Honsel Nieten - und Metallwarenfabrik GmbH & Co, 5758 Fröndenberg Druckmittelbetätigtes Blindnietgerät
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GB1596304A (en) * 1977-03-22 1981-08-26 Avdel Ltd Collector for broken-off fastener parts
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JPS544135U (fr) * 1977-06-07 1979-01-11
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DE2941461A1 (de) * 1978-10-20 1980-05-22 Aerpat Ag Abreissdorn-nietwerkzeug mit dorn- entfernungs-einrichtung

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0120309A3 (en) * 1983-02-26 1986-05-14 Gesipa Blindniettechnik Gesellschaft Mit Beschrankter Haftung Pneumatic-hydraulic devices for setting blind nuts
EP0154280A3 (en) * 1984-03-05 1987-08-19 Huck Manufacturing Company Tool for setting pull-type fasteners
GB2174943A (en) * 1985-05-10 1986-11-19 Avdel Ltd Breakstem fastener installation tool
EP0264817A3 (fr) * 1986-10-21 1989-04-26 SPS TECHNOLOGIES, Inc. Outil pour installer un dispositif de fixation aveugle et dispositif de fixation modifié
EP1132160A1 (fr) * 2000-03-10 2001-09-12 GESIPA Blindniettechnik GmbH Organe hydropneumatique de rivetage aveugle
US6367139B2 (en) 2000-03-10 2002-04-09 Gesipa Blindniettechnik Gmbh Pneumatic-hydraulic blind riveting device
US7159291B2 (en) 2003-07-18 2007-01-09 Opt Engineering Co., Ltd. Continuous riveter and continuously caulking method of blind rivets
EP1996350B1 (fr) * 2006-03-22 2014-10-22 Avdel UK Limited Clapet d'amortisseur hydraulique amélioré
CN102744354A (zh) * 2012-05-23 2012-10-24 山东同力达智能机械有限公司 双作用短尾铆钉液压拉铆枪
EP3670022A1 (fr) * 2018-12-19 2020-06-24 TKR Spezialwerkzeuge GmbH Outil hydraulique ainsi que procédé de commande automatique des outils hydrauliques à entraînement pneumatique

Also Published As

Publication number Publication date
DE3112711C2 (de) 1984-11-08
DE3112711A1 (de) 1982-10-14
ATE13825T1 (de) 1985-07-15
JPH0255136B2 (fr) 1990-11-26
JPS57175042A (en) 1982-10-27
EP0062206A3 (en) 1983-07-06
ES511022A0 (es) 1983-02-01
EP0062206B1 (fr) 1985-06-19
ES8301701A1 (es) 1983-02-01
US4515005A (en) 1985-05-07

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