EP0805278B1 - Pneumatisch betätigte Einrichtung - Google Patents

Pneumatisch betätigte Einrichtung Download PDF

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Publication number
EP0805278B1
EP0805278B1 EP97400897A EP97400897A EP0805278B1 EP 0805278 B1 EP0805278 B1 EP 0805278B1 EP 97400897 A EP97400897 A EP 97400897A EP 97400897 A EP97400897 A EP 97400897A EP 0805278 B1 EP0805278 B1 EP 0805278B1
Authority
EP
European Patent Office
Prior art keywords
bore
axial
piston
chamber
slide
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
EP97400897A
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English (en)
French (fr)
Other versions
EP0805278A1 (de
Inventor
Eric Chauffeteau
Richard Chene
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Caillau SAS
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Etablissements Caillau SAS
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Publication of EP0805278A1 publication Critical patent/EP0805278A1/de
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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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • B25B7/126—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears with fluid drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • 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
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/036—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
    • F15B11/0365—Tandem constructions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/421—Flow control characterised by the type of actuation mechanically
    • F15B2211/423—Flow control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/455—Control of flow in the feed line, i.e. meter-in control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7055—Linear output members having more than two chambers
    • F15B2211/7056—Tandem cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/77—Control of direction of movement of the output member
    • F15B2211/7716—Control of direction of movement of the output member with automatic return

Definitions

  • the present invention relates to a pneumatic cylinder device comprising a cylinder body, means for supplying pressurized fluid inside this body, a first piston movable in a first axial chamber located at the rear of the cylinder body and, at least, a second movable piston in a second axial chamber located in front of said first axial chamber.
  • the device further comprises a wall of separation of the two axial chambers having an axial bore and a rod connecting piston capable of sliding tightly in this bore.
  • This rod has a bore which opens, on the one hand, into the first axial chamber at the rear of the first piston and, on the other hand, in the second axial chamber at the rear of the second piston.
  • the pistons are connected to a advancement device located at the front of the cylinder body.
  • the pressurized fluid supply means include a gate valve controlled by control means between a first position in which the fluid is directed into at least one axial chamber, behind the piston contained in this chamber, to request the advancement member forward and a second position in which the fluid is directed in at least one axial chamber, at the front of the piston contained in this chamber, to urge the rearward advancement member.
  • a device of this type is known from the patent granted in the United States under the number 3,485,141.
  • the advancement member can for example be used for stamping or drilling parts, for example metal, by cooperating with a fixed body of suitable shape. It can also, as is the case in the patent granted in the UNITED STATES under n ° 3 410180, wear a head in wedge shape which, as it advances, urges the jaws of pliers into the direction of their closing, while by moving back it allows the opening of these jaws.
  • the device can be used for hanging cable ties or the like.
  • a device of this type of common use must be able to be manufactured for as low a cost as possible. So the circuit of circulation of fluid, often compressed air, is as simple as possible without requiring the creation of long ducts of very large dimensions precise. It should also be noted that, particularly in the case where wishes to use such a device to tighten clamps, its handling should be done in a very small space, such as the vehicle.
  • the fluid circulation circuit of Swiss Patent No. 570,242 is quite complicated. It has a compressed air inlet at the back of the body cylinder, three parallel channels extending forwards, over a length relatively large, two movable slide valves in bores having conical valve seats, and a third slide valve movable in an axial bore.
  • the number of these pieces, as well as their provision, is not compatible with the realization of the device for a relatively low cost and in a small footprint.
  • the actuator body of which is taken in hand by the user the control means must extend in a region cylinder body center.
  • control means of the device described in the patent Swiss number 570.242 consist of a very long and very bulky. This obviously constitutes a cost disadvantage of manufacturing. It should also be noted that the larger the surface of the order is important, the more the risks of untimely manipulation are great.
  • the present invention proposes to improve the device of the type cited above by remedying the drawbacks mentioned above.
  • the partition wall has a transverse bore in which the slide valve valve is located, a first conduit which connects the transverse bore to a fluid inlet under pressure, a second conduit which connects the transverse bore to the part rear of the second axial chamber, behind the second piston and a third conduit which connects the transverse bore to the front part of the first axial chamber, in front of the first piston, the first and second conduits being connected and isolated from the third leads in the first position of the slide valve, while in the second position of this valve, the first and third conduits are put in communication and isolated from the second conduit.
  • the various conduits can be machined in a very simple way in the partition wall, which allows to considerably reduce their length.
  • this provision allows use of a single slide valve, placed in a single bore in which different fluid circulation conduits open at positions judiciously distributed.
  • these control means comprise a lever control arranged substantially transversely to the cylinder body and having a first end, connected to this body in the region in the wall of separation and pivoting around a directed pivot axis substantially axially, and a second end adapted to cooperate with one free end of the valve spool.
  • Figures 1 to 4 show a pneumatic cylinder device comprising a jack body 10.
  • a first axial chamber 12 is formed in this cylinder body, at the rear of the latter, while a second axial chamber 14 is formed in the cylinder body, in front of the first one.
  • a third axial chamber 16 is provided in front of the second.
  • a first, a second and a third piston, respectively designated by the references 18, 20 and 22 are respectively arranged in the first, second and third axial chambers and are movable in these last. These pistons are connected to each other by a rod. More specifically, this rod comprises a first connecting rod 24 which connects the pistons 18 and 20, and a second connecting rod 26, or "rod of additional connection ", which connects the pistons 20 and 22.
  • the axial chambers 12 and 14 are separated by a partition wall 28 which has a bore axial 30 in which the first connecting rod 24 slides. To make this sealed sliding, a seal 32 is disposed in a groove in this bore and cooperates with the external periphery of the rod 24.
  • an additional partition wall 34 separates the chambers 14 and 16. It also has an axial bore, this time designated by the reference 36 in which the second connecting rod slides 26. The sliding is sealed by a seal 38 disposed in a bore groove 36.
  • the pistons are connected to a advancement member 40 located at the front of the cylinder body. More specifically, this advancement member is fixed at the front end of the rod which connects these pistons, that is to say, in the example shown, at the front end 42 of the second connecting rod 26. To this end, the advancement member has a tapping 44 which cooperates with the threaded end 42 of the rod 26.
  • the front end 40a of the member advancement 40 is wedge shaped, that is to say it widens rearward.
  • Support arms 46 are arranged at the front of the jack body.
  • arms 46 are fixed to the front end of the cylinder body using a ring fixing 48 provided with a thread which cooperates with a thread of the front end of the jack body 10.
  • These arms 46 support plates support 50 spaced from each other. Between these plates are mounted two gripper arm 52. Their front ends 52a are shaped as jaws. Their rear ends have rollers of bearing 52b capable of cooperating with the advancement member in the form of corner.
  • the gripper arms 52 are connected to the support plates, each by a pivot axis 54.
  • Springs spacers 56 are arranged inside the gripper arms, in the region axes 54.
  • the member is in its rear position, the springs 56 stress the arms so that their front ends move apart.
  • the advancement member is in its position before, it cooperates with the rollers 52b to spread the rear ends of the arm 52 and consequently bring their front ends 52a which are thus able to tighten a clamp.
  • the rod 24 has an axial bore 60 which, by its rear end 60a, opens into the first axial chamber 12 behind the first piston 18 and which, near its front end 60b, opens into the second chamber 14 at the rear of the second piston 20.
  • the hole 60 is, near its front end, connected to a hole transverse 62 opening on the axial peripheral wall of the rod 24 to rear of piston 20.
  • the rod 24 being connected to a second rod 26, the axial bore 60 still leads to the free end before 60b.
  • the rod 26 has, as for it, also an axial bore, designated by the reference 64, which, by its rear end, is connected to the front end 60b of the axial bore 60 of the first connecting rod 24.
  • the bore 64 further opens into the third axial chamber 16 behind the third piston 22. To do this, it is connected to a transverse conduit 66 which opens on the axial periphery of the second connecting rod 26, behind the second piston 22. By elsewhere, the front end 64b of the bore 64 is closed.
  • connection socket 67 to receive the end of a pressurized fluid supply pipe, in general consisting of a hose for supplying air under pressure.
  • a pressurized fluid supply pipe in general consisting of a hose for supplying air under pressure.
  • This connection is extended forward by a conduit 68 located on the side of the cylinder body and extending axially into the region of the wall of separation 28.
  • the length of this conduit is therefore slightly greater than the length, that is to say to the axial dimension, of the first chamber 12.
  • the means for supplying the pressurized fluid comprise a slide valve visible on the sections of Figures 2, 5 and 6. It should be noted that for the sake of simplification of the drawings, this valve is not fully shown in Figures 1 and 4.
  • the valve slide 70 can be ordered in a first position which is that of FIGS. 4 and 6, in which the fluid is directed into at least one axial chamber at the rear of the piston contained in this chamber, which makes it possible to urge the forward advancing member 40.
  • the drawer can also be ordered in a second position, which is that of FIGS. 1, 2 and 5, in which the fluid is directed into at least an axial chamber, at the front of the piston contained in this chamber, such so that the advancement member 40 is biased is the rear.
  • the slide 70 is movable in a transverse bore 72 located in the partition wall 28 between the first and second axial chambers 12 and 14. As best seen in Figure 2, the bore extends parallel to a cylinder body diameter and is separated from the central bore 30 of the partition wall 28. Only the bore 72, without the slide 70, is shown in Figures 1 and 4.
  • this first conduit 75 comprises a first substantially radial section 74 connected to the end front of conduit 68 and extending to a plane P which is a plane of symmetry of the bore 72 parallel to the axis "A" of the cylinder body. It is in this plane P that the cuts of Figures 5 and 6 are made.
  • the first conduit 75 comprises a second section 76 which extends parallel to this plane P and connects the first section 74 to the bore 72. To facilitate its machining, this second section has a part 78 which initially led to one ends (the rear end) of the partition wall 28 and which is closed with a plug 80.
  • the position of the opening of the conduit 76 in bore 72 is shown diagrammatically in FIG. 2.
  • the partition wall 28 has a second conduit 82 which connects the transverse bore 72 to the rear part of the second axial chamber 14.
  • This second conduit 82 has a single axial section. Its rear end opens onto the bore transverse 72 while its front end opens onto the front face 28a of the partition wall 28, which also constitutes the rear face of the axial chamber 14. Whatever the position of the second piston 20 at inside this chamber, the second conduit 82 therefore opens at the rear of this second piston.
  • the partition wall 28 has a third conduit 84 which connects transverse bore 72 to the front part of the first chamber axial 12.
  • the third conduit comprises a single axial section. Its front end opens into the bore transverse 72 while its rear end opens onto the rear face 28b of the partition wall 28, which also constitutes the front end of the first axial chamber 12. Consequently, whatever the position of the first piston 18 inside the first axial chamber, the third conduit 84 opens at the front of this piston.
  • the partition wall 28 is long enough to accommodate these different conduits. Its length is for example of the order of two to three times the diameter of bore 72.
  • the drawer 70 has a substantially cylindrical body 86 having two swollen zones 88 and 90 provided with seals and separated from each other.
  • the openings of these three conduits in the bore are regularly spaced.
  • the spacing between the two bulges 88 and 90 of the body of the drawer is very slightly greater than the spacing between two conduits.
  • the conduits 76 and 82 can be put in communication since their openings are between bulges 88 and 90, while conduit 84 is isolated from the two others by the bulge 90.
  • the openings of the conduits 84 and 76 are located between the bulges 88 and 90 and are therefore put in communication, while the opening of the conduit 82 is isolated from the other two by the bulge 88.
  • the operation of the device is as follows.
  • drawer 70 is pushed towards the bottom 72b of the bore 72, which is possible thanks to the fact that the air in front of the bulge 88 can be expelled by the bore 92
  • the fluid entering through the conduits 68, 74 and 76 can enter the rear of the second chamber 14 through the second conduit 82 of the wall separation 28.
  • This fluid therefore tends to push forward the second piston 20.
  • the fluid enters through the bore 62 in the drilling 60 of the rod 24 and is thus led to the rear of the first axial chamber 12, so that its action is also exerted at the rear of the first piston 18.
  • the fluid penetrating through the bore 62 is leads to the rear of the third piston 22 through the holes 64 and 66 of the additional connecting rod 26, so that its action is exerted also on the rear face of the third piston 22.
  • the action of the fluid is thus exerted on the three pistons at the same time which increases its efficiency.
  • the conduit 84 is placed in communication with the outside by a hole 94 which equips the ring 96 for guiding the rod 98 of the drawer 70.
  • the fluid located at the front of this chamber is directly evacuated by a hole 100 made in the wall of this chamber, at its end before.
  • the fluid located in the front part of the third chamber 16 can naturally vent to the front of this chamber because none sealing system is provided between the advancing member, the arms of support 46 and ring 48.
  • the drawer 70 When, on the other hand, the drawer 70 is pushed back so as to move away of the bottom 72b of the bore 72, position determined by the cooperation in abutment of the bulge 90 and of the ring 96, the air entering through the conduits 68, 74 and 76 can enter the front part of the first axial chamber 12 through the third conduit 84 of the wall 28.
  • the assembly constituted by the pistons and their connecting rods is pushed backwards by the action of the fluid on the front face of the first piston 18. It is not necessary for this opportunity to multiply the effect obtained by making the fluid act on others pistons.
  • the control means of the slide valve include a lever control 102 arranged substantially transversely. As we best seen in Figure 2, this lever 102 has a first end 102a connected to the cylinder body 10 in the region of the partition wall 28. This first end 102a is pivotally mounted around an axis of pivoting 104, better visible in FIGS. 1 and 4 directed substantially along the axis A of the cylinder body. The second end 102b of the lever 102 cooperates with the free end 99 of the drawer 70.
  • this lever is directly connected to the partition wall 28, and is therefore only located in a central region of the cylinder body.
  • the partition wall has a transverse slot 29 in which is housed the first end 102a of the lever.
  • the lever 102 is almost entirely contained in the slot 29.
  • the first and second ends of the lever are relatively distant one the other.
  • the lever extends over more than a quarter of the circumference of the cylinder body. It is therefore also the case of slot 29 which receives it in most of it. The lever being bent, the slot 29 is also.
  • the device advantageously comprises elastic means for naturally urge the drawer 70 into its second position, in which the advancement member is pushed back.
  • elastic means for naturally urge the drawer 70 into its second position, in which the advancement member is pushed back.
  • these elastic means are constituted by a simple spring 106 which rests, on the one hand, on the internal face of the enlarged free end 99 of the drawer and, on the other hand, on the external face of the guide ring 96, fixed in bore 72, in which the rod slides 98 from the drawer.
  • a spiral spring possibly arranged between the bottom 72b of the bore and the internal end of the drawer located below the bulge 88.
  • the device advantageously includes means for damping the movement of at least one of the pistons at the end of the travel stroke, in at least one of the directions of movement of the advancement member.
  • the pistons being connected to each other by the connecting rods, these means dampen in fact the displacement of the assembly constituted by the pistons, their rod and the advancement member.
  • these damping means are constituted by a bulge 108 made of relatively flexible material, by example of the rubber or similar type, formed on the rear face of the first piston 18.
  • this bulge 108 cooperates with the rear face of the first chamber 12.
  • the front face with one of the pistons, for example also the rear piston, of a bulge of the same type for dampen forward movement.
  • the piston 18 in fact comprises a metal core 18a and an outer ring 18b, in relatively flexible material, which surrounds this core and is provided with bulges. It is advantageous that the position of extreme advancement of the assembly, which obviously defines the extreme front position of the organ advancement 40, is very precisely defined so that the active position jaws 52a is also.
  • the device advantageously comprises first stop means arranged in one of the axial chambers, near its front end, and second stop means arranged on the piston which is on this chamber, in the vicinity of the front face of this piston. So the first and second stop means cooperate with each other when the assembly constituted by the pistons, their connecting rod and the advancing member is pushed towards the front, so that they define the position of extreme advancement of this set.
  • these stop means are very simple since the first stop means are constituted by the front face of the third chamber 16, front face itself defined by the ends rear 46b of the support arms 46, while the second means of stop are constituted by the front face 22a of the third piston 22. It is possible obviously plan to realize these abutment means in another of the axial chambers. However, the precise position of the arms 46 is determined by screwing the assembly ring 48. This makes it possible to define precisely the position of the first stop means, leaving a possibility of adjustment.
  • the device advantageously comprises at least one pad annular 110 disposed in the bore 30 of the partition wall 28 and made of a material with a low coefficient of friction. So, this bearing can cooperate with the outer periphery of the connecting rod 24 in facilitating its sliding in the bore.
  • a similar pad 112 is also arranged in the bore 36 of the partition wall additional, when it is present.
  • the fact of providing these bearings does not exclude the provision of seals 32 and 38 in the bores.
  • the peripheral faces of the different pistons cooperating with the axial walls of the chambers, are provided with seals 118, 120 and 122.
  • the front and rear ends of the connecting rods 24 and 26 cooperate by screwing.
  • wedging washers 124 equip the rear faces of pistons 20 and 22.
  • the rear end of the rod 24 is threaded.
  • the rear face of the first piston 18 has a recess 126 adapted to receive a nut 128 for fixing screwed on the rear end of the rod.
  • the position of the piston relative to the rod is wedged using a wedging washer 130 located on the front face of this piston and cooperating with a shoulder of the rod.
  • the cylinder body has three elements main consisting of blind tubes.
  • the first tube 132 defines the first chamber 12. These rear and side walls have the connection pipes at the pressurized fluid inlet.
  • the cavity of the second tube 134 forms the second axial chamber 14.
  • the rear wall of this tube constitutes the partition wall between the chambers 12 and 14. It is therefore it which is provided with bore 72 and the various conduits previously mentioned. This wall is connected by screwing at the end front of the first tube 132.
  • the cavity of the third tube 136 forms the third axial chamber 16, while its rear wall forms the wall 34 of separation between chambers 14 and 16. This rear wall is screwed into the front end of the second tube 134.
  • seals 138 are arranged in the screwing area between the different tubes.

Claims (8)

  1. Pneumatische Zylindervorrichtung mit einem Zylinderkörper (10), Mittel für die Zuleitung eines unter Druck stehenden Fluids in das Innere des Körpers, einem ersten beweglichen Kolben (18) in einer im hinteren Teil des Zylinderkörpers vorgesehenen ersten axialen Kammer (12) und zumindest einem zweiten beweglichen Kolben (20) in einer zweiten axialen Kammer (14), die vor der ersten axialen Kammer liegt, wobei die Vorrichtung weiters eine Wand (28) zur Trennung der beiden axialen Kammern, die eine axiale Bohrung (30) aufweist, und eine Stange (24) zur Verbindung der Kolben (18, 20) aufweist, die in dieser Bohrung dicht gleiten kann, wobei diese Stange eine Durchbohrung (60) aufweist, die einerseits in der ersten axialen Kammer (12) hinter dem ersten Kolben (18) und andererseits in der zweiten axialen Kammer (14) hinter dem zweiten Kolben (20) mündet, wobei die Kolben mit einem Vorschuborgan (40) verbunden sind, das im vorderen Teil des Zylinderkörpers (10) vorgesehen ist, wobei die Mittel für die Zuleitung des unter Druck stehenden Fluids ein Schieberventil (70, 72) aufweisen, das durch Steuermittel zwischen einer ersten Position, in der das Fluid in zumindest eine axiale Kammer hinter dem in dieser Kammer vorgesehenen Kolben geleitet wird, um das Vorschuborgan nach vorn zu belasten, und einer zweiten Position gesteuert wird, in der das Fluid in zumindest eine axiale Kammer vor dem in dieser Kammer vorgesehenen Kolben geleitet wird, um das Vorschuborgan nach hinten zu belasten,
       dadurch gekennzeichnet, dass die Trennwand (28) eine Querbohrung (72), in der der Schieber des Schieberventils (70) vorgesehen ist, eine erste Leitung (74, 76), die die Querbohrung (72) mit einem Zulauf des unter Druck stehenden Fluids (67, 68) verbindet, eine zweite Leitung (82), die die Querbohrung (72) mit dem hinteren Bereich der zweiten axialen Kammer (14) hinter dem zweiten Kolben (20) verbindet, und eine dritte Leitung (84) aufweist, die die Querbohrung (72) mit dem vorderen Bereich der ersten axialen Kammer (12) vor dem ersten Kolben (18) verbindet, wobei in der ersten Position des Schiebers (70) des Schieberventils die erste und zweite Leitung (74, 76; 82) in Verbindung gebracht und von der dritten Leitung (84) getrennt sind, wogegen in der zweiten Position dieses Schiebers die erste und dritte Leitung (74, 76; 84) in Verbindung gebracht und von der zweiten Leitung (82) getrennt sind.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Steuermittel des Schieberventils (70, 72) einen im Wesentlichen quer angebrachten Steuerhebel (102) aufweisen, der ein erstes Ende (102a), das mit dem Zylinderkörper (10) im Bereich der Trennwand (28) verbunden und um eine im Wesentlichen axial gerichtete Schwenkachse (104) schwenkbar angebracht ist, und ein zweites Ende (102b) aufweist, das zum Zusammenarbeiten mit einem freien Ende (99) des Schiebers (70) des Schieberventils geeignet ist.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie elastische Mittel (99) aufweist, um den Schieber (70) des Schieberventils auf natürliche Weise in seine zweite Position zu belasten.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Querbohrung (72) einen Boden (72b) und eine diesem Boden gegenüberliegende Öffnung (72a) aufweist, aus der das freie Ende des Schiebers (70) des Schieberventils vorragen kann, und, dass die dritte, erste und zweite Leitung (84, 76, 82) nacheinander mit der Querbohrung (72) in der Richtung von der Öffnung (72a) zum Boden (72b) dieser Bohrung (72) verbunden sind.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sie Mittel (108) zum Dämpfen der Bewegung zumindest eines der Kolben am Ende der Verschiebung in zumindest eine der Verschiebungsrichtungen des Vorschuborgans aufweist.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass sie erste Anschlagmittel (46b), die in einer (16) der axialen Kammern (12, 14, 16) nahe deren vorderem Ende vorgesehen sind, und zweite Anschlagmittel (22a) aufweist, die am Kolben (22) in dieser Kammer nahe seiner vorderen Fläche vorgesehen sind, wobei die ersten und zweiten Anschlagmittel miteinander zusammenarbeiten können, um die äußerste Vorschubposition des Vorschuborgans (40) zu definieren.
  7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass sie zumindest eine in der axialen Bohrung (30) vorgesehene ringförmige Lagerbuchse (110) aufweist, die aus einem Material mit niedrigem Reibungskoeffizienten hergestellt ist und mit dem Verbindungsschaft (24) zusammenarbeitet.
  8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sie einem dritten beweglichen Kolben (22) in einer vor der zweiten axialen Kammer gelegenen dritten axialen Kammer (16), eine zusätzliche Trennwand (34), die die zweite und dritte axiale Kammer (14, 16) trennt und eine axiale Bohrung (36) aufweist, und eine zusätzliche Verbindungsstange (26), die den zweiten und dritten Kolben (20, 22) miteinander verbindet und dicht in dieser axialen Bohrung gleiten kann, wobei diese zusätzliche Verbindungsstange eine Durchbohrung (64) aufweist, die mit der Durchbohrung (60) der Verbindungsstange (24) des ersten und zweiten Kolbens (18, 20) verbunden ist und in die dritte axiale Kammer (16) hinter dem dritten Kolben mündet.
EP97400897A 1996-05-03 1997-04-22 Pneumatisch betätigte Einrichtung Expired - Lifetime EP0805278B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9605545A FR2748298B1 (fr) 1996-05-03 1996-05-03 Dispositif de verin pneumatique
FR9605545 1996-05-03

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EP0805278A1 EP0805278A1 (de) 1997-11-05
EP0805278B1 true EP0805278B1 (de) 2000-08-02

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JP (1) JPH1037911A (de)
KR (1) KR100227523B1 (de)
CN (1) CN1182004A (de)
AR (1) AR006938A1 (de)
AT (1) ATE195162T1 (de)
BR (1) BR9703061A (de)
CA (1) CA2204077A1 (de)
CZ (1) CZ135197A3 (de)
DE (1) DE69702683T2 (de)
FR (1) FR2748298B1 (de)
HU (1) HUP9700825A3 (de)
NO (1) NO972053L (de)
PL (1) PL319779A1 (de)
TW (1) TW343168B (de)
ZA (1) ZA973812B (de)

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CN105328278A (zh) * 2015-11-30 2016-02-17 重庆市首业机械制造有限公司 带双锥齿轮和复位压簧的装夹工装
CN105345163A (zh) * 2015-11-30 2016-02-24 重庆市首业机械制造有限公司 一种带蜗轮蜗杆和复位磁铁的夹紧机构
CN105345164A (zh) * 2015-11-30 2016-02-24 重庆市首业机械制造有限公司 带有双锥齿轮和复位拉簧的夹紧机构
CN105345167A (zh) * 2015-11-30 2016-02-24 重庆市首业机械制造有限公司 带有气缸和复位拉簧的夹紧机构
CN105345166A (zh) * 2015-11-30 2016-02-24 重庆市首业机械制造有限公司 一种带双锥齿轮和复位扭簧的装夹工装

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EP1034896A1 (de) * 1998-12-17 2000-09-13 Novartec AG Pressbacken-Anordnung
CA2458033C (en) 2001-09-11 2010-06-08 Emerson Electric Co. Crimping assembly
TWI223207B (en) * 2002-08-16 2004-11-01 Pts Corp Method of determining relative z-ordering in an image and method of using same
GB2394000B (en) * 2002-10-10 2007-03-28 Lotus Car An arrangement of an internal combustion engine poppet valve and an actuator therefor
CN101090966B (zh) 2004-12-24 2012-07-04 财团法人阪大微生物病研究会 具有减毒日本脑炎病毒基因作为主链的减毒嵌合黄病毒
KR100954867B1 (ko) 2009-12-31 2010-04-28 유영묵 공압식 연동 제어 장치 및 시스템
DE102012013409A1 (de) * 2012-05-23 2013-11-28 Atlas Copco Construction Tools Gmbh Schlagvorrichtung
EP3169905A4 (de) * 2014-07-14 2018-03-14 Ridge Tool Company Hydraulische werkzeuge mit schnellem vorschub
FR3046820B1 (fr) * 2016-01-15 2018-02-16 Valeo Embrayages Cylindre hydraulique emetteur a dispositif d'etancheite perfectionne
CN109262541A (zh) * 2018-09-29 2019-01-25 上海蔚来汽车有限公司 一种紧固件安装工具
CN111341501B (zh) * 2018-12-18 2023-09-26 库迈思控股股份公司 用于电缆加工装置的夹具组件以及电缆加工装置
DE102021103015B3 (de) 2021-02-09 2022-04-21 Oetiker Schweiz Ag Sicherheitsventil für ein pneumatisch betätigbares Werkzeug
CN113182821B (zh) * 2021-05-11 2022-08-16 西安秦泰汽车排放技术有限公司 一种用于夹持盘状元件的装置

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US3410180A (en) * 1966-08-03 1968-11-12 Etc Inc Full stroke compelling mechanism having a pressure responsive valve member within the working chamber
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Publication number Priority date Publication date Assignee Title
CN105328278A (zh) * 2015-11-30 2016-02-17 重庆市首业机械制造有限公司 带双锥齿轮和复位压簧的装夹工装
CN105345163A (zh) * 2015-11-30 2016-02-24 重庆市首业机械制造有限公司 一种带蜗轮蜗杆和复位磁铁的夹紧机构
CN105345164A (zh) * 2015-11-30 2016-02-24 重庆市首业机械制造有限公司 带有双锥齿轮和复位拉簧的夹紧机构
CN105345167A (zh) * 2015-11-30 2016-02-24 重庆市首业机械制造有限公司 带有气缸和复位拉簧的夹紧机构
CN105345166A (zh) * 2015-11-30 2016-02-24 重庆市首业机械制造有限公司 一种带双锥齿轮和复位扭簧的装夹工装

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NO972053L (no) 1997-11-04
KR100227523B1 (ko) 1999-11-01
MX9703307A (es) 1998-05-31
AR006938A1 (es) 1999-09-29
CN1182004A (zh) 1998-05-20
HU9700825D0 (en) 1997-06-30
FR2748298B1 (fr) 1998-07-31
FR2748298A1 (fr) 1997-11-07
NO972053D0 (no) 1997-05-02
BR9703061A (pt) 1998-09-01
JPH1037911A (ja) 1998-02-13
KR970075390A (ko) 1997-12-10
ZA973812B (en) 1997-12-01
ATE195162T1 (de) 2000-08-15
PL319779A1 (en) 1997-11-10
DE69702683T2 (de) 2001-04-05
CZ135197A3 (en) 1997-11-12
TW343168B (en) 1998-10-21
DE69702683D1 (de) 2000-09-07
HUP9700825A3 (en) 1999-03-29
EP0805278A1 (de) 1997-11-05
HUP9700825A2 (hu) 1998-04-28
CA2204077A1 (en) 1997-11-03

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