EP0928664A2 - Dispositif à genouillère actionné à main - Google Patents

Dispositif à genouillère actionné à main Download PDF

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Publication number
EP0928664A2
EP0928664A2 EP98114147A EP98114147A EP0928664A2 EP 0928664 A2 EP0928664 A2 EP 0928664A2 EP 98114147 A EP98114147 A EP 98114147A EP 98114147 A EP98114147 A EP 98114147A EP 0928664 A2 EP0928664 A2 EP 0928664A2
Authority
EP
European Patent Office
Prior art keywords
lever
toggle
housing
piston rod
clamping
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.)
Withdrawn
Application number
EP98114147A
Other languages
German (de)
English (en)
Other versions
EP0928664A3 (fr
Inventor
Josef-Gerhard Tünkers
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.)
I S I International SA
Original Assignee
I S I International SA
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 I S I International SA filed Critical I S I International SA
Publication of EP0928664A2 publication Critical patent/EP0928664A2/fr
Publication of EP0928664A3 publication Critical patent/EP0928664A3/fr
Withdrawn legal-status Critical Current

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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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/12—Arrangements for positively actuating jaws using toggle links

Definitions

  • the invention relates to a toggle lever tensioning device designed as a hand tensioner, especially for use in the bodywork of the automotive industry.
  • Toggle lever clamping devices are used particularly in the body shop of the automotive industry used for a variety of applications.
  • Toggle clamps with manual feed devices in welding devices used to within automatically controlled toggle clamps Insert additional parts by hand and by hand to be able to preload. After going through these exciting parts the manually operated toggle clamps are fixed, this is done Close all, including the automatic toggle clamps Pressurizing medium, especially by air pressure.
  • toggle clamps already have a hand lever, which is connected to the toggle joint and thus the closing and opening movement of the toggle clamp device necessarily participates and this poses a risk to the operating personnel. Because namely these toggle clamps are biased by the manual feed device and then all toggle clamps through the Pressurized medium pressure, in particular by air pressure, leads to this a corresponding kick back of the hand lever, causing serious injury which could result in operators.
  • the return stroke volume of the clamping cylinder monitoring 3/2-way valve of the check valve arranged, the venting position for the return displacement via a This valve monitored the ventilation line leading freely through the valve
  • the sliding block is adjustable and its blocking position for this ventilation line due to the tensioning piston in a drag connection with the piston rod during its longitudinal movement independent of the piston rod takes place, in this locked position the return displacement with a 5/2-way valve - Changeover valve for the clamping cylinder - over the other 2 ways this Check valve is connectable.
  • the shut-off valve is as between two stops in the longitudinal direction Slidable spool or as opening and closing Valve formed.
  • a locking device is thus assigned to the toggle lever tensioning device, which alternate to vent the cylinder space penetrated by the piston rod (Annular space) through the manual feed device in the venting position and can be brought into a locking position by the piston itself, if the other cylinder space opposite the annulus in the automatic Clamping of the full pressure medium pressure, in particular air pressure becomes.
  • DE 36 13 852 is a pressure medium-operated toggle lever tensioning device for clamping workpieces, also primarily for Use in fixtures and welding machines for body construction in the automotive industry, previously known, with a double on the piston rod Acting clamping cylinder attacking, manually operable, two-armed Hand lever to which a handle is assigned.
  • the two-armed hand lever is mounted on the piston rod with a swivel axis.
  • the one facing away from the handle Lever arm of the two-armed hand lever is with a swivel joint connected to a clamping part.
  • the venting position for the return displacement via a check valve monitored by this Vent line leading to the outside through an end on the lever side the adjustment part assigned to the two-armed hand lever is controllable.
  • the blocking valve is in the blocked position for the ventilation line by means of the piston rod in a trailing tensioning piston during its longitudinal movement independent of the piston rod, furthermore a clamping tab assigned to the toggle joint is provided, which on the one hand via a swivel axis with the clamping part and on the other hand with the Piston rod connected via another pivot axis running parallel to it is.
  • the two-armed hand lever is also on the same, the clamping tab with the swivel axis connecting the piston rod arranged.
  • the handle also has one on the two-armed hand lever over a parallel to the joint axes of the toggle joint Swivel axis pivotally arranged two-armed lever on the between at least two on the two-armed hand lever - if necessary indirectly - formed stops is pivotable.
  • the hand lever lever arm facing away from the two-armed hand lever forms the adjustment part. This makes it possible to close the toggle lever mechanism manually and open. This also allows the position of pre-stressed parts by hand correct again.
  • DE-PS 156 107 shows no toggle lever tensioning device, but a hydraulic one Press. There is a two-armed hand lever for steering there a pressure cylinder available; but because this hand lever can be swiveled is mounted on the piston rod and on the press stand and piston with piston rod are in towing connection with the working cylinder, during the infeed movement of the working cylinder inevitably also the hand lever pivoted.
  • the press control according to DE 10 16 128 also shows no device for pivoting a hand lever on toggle clamps because there the hand lever on a device for changing the press stroke is attached and detachable.
  • GB-PS 814 938 finally shows the device for mounting one Circlips in a radial shaft or pin groove.
  • This facility is with provided a hand lever that acts as an operating lever for the control valve serves. At the. Operating this lever immerses an abutment part for alignment the device for radial guidance in this groove and at the same time Tappet for removing a snap ring from a magazine and for Mounted in the ring groove.
  • the German utility model application 295 04 267.2 relates to a toggle lever tensioning device, especially for use in car body construction in the automotive industry, with a clamping head and one in axial extension on it adjoining cylinder, in which an alternating pressure on both sides by pressure medium, preferably by air pressure, piston to be moved longitudinally and is sealingly guided, the cylinder with its piston rod and reaches through a clamping head adjoining it in the axial direction, being at the free end of the piston rod within the housing Knee lever arrangement is attached, which is assigned a tension arm, if necessary with limit switches or position sensors, with the clamping head only off consists of two materially one-piece, shell-shaped housing parts, the the toggle joint assembly and part of the piston rod dust, Encapsulate dirt and splash protection on the outside, with the inside Walls of the housing parts guide grooves for the toggle joint arrangement and through holes for a pivot pin of the toggle joint assembly and, if necessary, an opening for a cassette for microswitches or inductive switches or arranged for pneumatic switches are.
  • the parting plane runs parallel to the longitudinal axis direction in the direction of Piston rod.
  • the tension arm is screwed to a fork arm, the Fork arm on profiled pivot pins of the toggle joint arrangement is held such that the fork arm from the outside of the shell-shaped housing parts engages and releasably on the ends of the Swivel pin is arranged.
  • the arrangement can be made so that the fork arm each has a screw-on part in one piece, depending on the installation conditions arranged centrally or off-center on the fork arm is, with the screw-on part of the clamping arm by screws or the like is attached.
  • DE 22 22 686.4-15 discloses a toggle lever clamping device which can be actuated by pressure medium for body parts, consisting of a housing with a cylinder space for the piston, on the free piston rod guide means for the piston rod and a piston rod pin are arranged, which have a Tab connected to the knee joint of a workpiece-exciting angle lever which is pivotable on a bearing journal mounted in the housing is stored, previously known.
  • the guide means for the piston rod exist from rollers provided at the ends of the piston rod pin, which in Axial direction of the piston rod-running guide grooves or longitudinal slots can be carried out in a seal-free movement space in the housing on the side with the free piston rod end regardless of the cross-section the piston rod can be designed.
  • the Guide means for the piston rod at the ends of the immediately on Provided end of the piston rod arranged piston rod pin Rollers, the guide grooves running in the axial direction of the piston rod or longitudinal slots can be made in a seal-free movement space, which is independent in the housing on the side with the free piston rod end can be designed from the cross section of the piston rod.
  • DE-GM 295 16 531.6 also discloses a toggle lever tensioning device, especially for use in fixtures and welding machines of the Body construction known in the automotive industry, with one clamping head and one in an axial extension adjoining the cylinder in which alternately on both sides by pressure medium, preferably by air pressure, Piston to be acted upon is guided in a longitudinally displaceable and sealing manner with its piston rod the cylinder and an axially Grips in the direction of the subsequent clamping head, with the Piston rod within the housing a toggle joint arrangement is attached, which is assigned a clamping arm, with one on the piston rod attacking, hand-operated hand lever, which a handle is assigned, the hand lever with the piston rod via a joint for the purpose of their axial movement cooperating, the clamping head consisting of two consists of one-piece, shell-shaped housing parts that the Toggle joint assembly and part of the piston rod dust, dirt and splash-proof encapsulate outwards and that inside Walls of the shell-shaped housing parts guide grooves for the Toggle joint arrangements and
  • the backdrop of the piston rod for the driver runs transversely to the longitudinal axis of the piston rod.
  • the The backdrop can be arranged in a straight line and orthogonal to the longitudinal axis of the piston rod be.
  • the rigid driver is the same in the backdrop of the piston rod guided swiveling.
  • the backdrop is designed as a bore, whereby the driver is spherical or bead-shaped.
  • the driver can also be designed as a spherical cap.
  • in the middle of the backdrop is a to a limited extent extending in the axial direction of the piston rod Slot is arranged in the articulated lever during the shift the piston rod is completely or partially immersed.
  • the articulated lever is with the swivel axis on the one hand and the driver on the other integrally and rigidly connected. With this construction there is therefore Connection between hand lever and piston rod from a joint lever, which is connected to a rigid driver, which is directly in a guide the piston rod is guided and held. This will increase the number of the individual parts is reduced and a high degree of functionality is achieved.
  • the housing of the clamping head consists of only two shell-shaped parts that complement the housing. This will make the Number of individual parts continues to decrease.
  • the housing parts or housing shells on their inside all required grooves or recesses for guiding the toggle joint arrangement and have their storage.
  • the hinge pin of the Toggle joint arrangement via rollers in parallel and in the longitudinal axis direction the inner guide grooves arranged on the piston rod can be guided.
  • the two housing parts also have the bearing openings for the Pivot pin of the clamping head and, if necessary, sealed openings for the pivot axis of the hand lever, which in the space between the Swivel pin of the tension arm and the cylinder receiving the piston can be arranged.
  • the pivot pin is on each end the toggle joint arrangement each arranged at least one roller, each Rollable in one of the guide grooves of the shell-shaped housing parts is stored.
  • the guide grooves are in one piece with the shell-shaped housing parts trained and therefore do not make any loose loose parts
  • toggle clamps for the generic type proposed purpose with two knee lifters arranged one behind the other, the axis of the one toggle lever coupled to the tension arm is guided with low friction on rollers in the longitudinal slots of the housing.
  • the slot extends in the longitudinal axis direction of the clamping head and thus the Housing itself.
  • clamping head for toggle lever clamping devices the body construction of automotive industries with hand clamps and related with cylinders to be pressurized by compressed air, in which a piston with a piston rod that can be moved longitudinally and seals.
  • German utility model 297 01 730.6 is a toggle lever clamping device, especially for use in fixtures and welding machines of the body shop of the automotive industry, with a clamping head and one optionally to be arranged thereon in an axial extension Cylinder in which an alternating pressure on both sides due to pressure for example air pressure, piston to be loaded can be moved longitudinally and is sealingly guided, which in its arrangement with a piston rod Cylinder and a clamping head adjoining it in the axial direction reaches through, two with manual drive in the axial direction in the clamping head Toggle joints (drive toggle joint; tension arm toggle joint) geared are arranged one behind the other, the clamping head essentially is formed by two sandwich-like housing parts, which the drive toggle joint and the tension arm toggle joint outward encapsulate and dirt and moisture-proof, in each of the housing parts one guide groove each running parallel to the longitudinal axis of the clamping head is arranged, in each of which a roller is guided, each flying are mounted on a pivot axis of the clamping arm toggle
  • This utility model also describes a toggle clamp device, one of which is the center point of the axis of the drive toggle joint fixed to the housing and the housing-fixed pivot axis of the clamping arm in a straight line connecting center line parallel to the longitudinal axis of the guide grooves runs and that the two toggle joints in all swivel positions of the clamping arm on the side of the center line facing away from the tension arm with their Knee lever joints lie.
  • the hand lever is in the open position by one Ball catch releasably to lock.
  • a cover plate Cylinder releasably arranged, alternately on both sides by pressure medium Pistons to be loaded, moved longitudinally and sealed has, the piston rod an opening in the bottom plate into the Reaches through the interior of the clamping head and a swivel axis at one end has, with which a tab is coupled gear, which at its end Swiveling with the double toggle joint via a swivel pin connected is.
  • the pivot axis has at least one at each end Guide roller on, the guide rollers each in a guide groove in the longitudinal direction the piston rod are positively guided.
  • the swivel axis is over one Clevis coupled to the bracket.
  • the toggle clamp device should have the advantage that the double toggle joint in one of only two one-piece, shell-shaped housing parts is arranged, the the two consecutive toggle joints and - if available - Part of the piston rod is also protected against dust, dirt and splashes encapsulate the outside, with guide grooves in the inner walls of the housing parts for a toggle joint arrangement and through holes for the stationary pivot axis of the other toggle joint arrangement and a slit-shaped opening for a cassette for microswitches, inductive switches or limit switches or for pneumatic switches are.
  • the cassette needs namely in this case only through a narrow, relatively narrow slot to be inserted from the back of the clamping head, so that the Rear of the clamping head for mounting the toggle lever clamping device can be used.
  • a toggle lever tensioning device according to the invention to be assembled from all four sides.
  • the hand lever can be locked in the open position so that it does not unintentionally, falling down or - creeping - moving down can.
  • the invention has for its object a trained as a hand clamp Toggle lever clamping device, in particular for use in body construction the automotive industry, which is extremely simple to set up and can be manufactured very inexpensively.
  • a toggle lever tensioning device In a toggle lever tensioning device according to the invention, the actual Housing formed only by two plates, which are manufactured very inexpensively not only the toggle joint, but also the one between them individual axes.
  • Such a hand lever with the connection dimensions the usual power clamps, i.e. with the dimensions of the usual manufactured pneumatically or electrically driven toggle clamps are such a manually operated toggle lever tensioning device also compatible with the power clamps.
  • Manual toggle clamps according to the invention cannot be used Use only in so-called pilot series, i.e. until everything is set up and the operation runs smoothly, but also where, for example, manual Work is still inexpensive.
  • the housing consists of only two drawn sheets exists, which practically do not need to be reworked, but only folded, possibly broken at the folded corners (with a phase), although this is not mandatory is.
  • Claim 2 describes an embodiment in which a stop is provided between the two plates forming the housing, which limit the pivoting angle of the tensioning arm in its closed position in a defined manner.
  • This stop can be adjustable, for example, to be set up in the factory or by the customer on the presented tensioning path.
  • such a stop is also assigned to the hand lever, which additionally limits the pivoting angle of the hand lever into a closed position.
  • the hand lever is assigned a spring element, preferably a leg spring, which holds the hand lever and thus the tension arm in the open position, i.e. prevents it from falling down unintentionally, but is designed and arranged such that no excessive force is required to to swing the hand lever into position.
  • a spring element preferably a leg spring
  • the toggle lever tensioning device is also assigned position transmitters or the like for an inquiry and / or inquiry.
  • the reference numeral 1 designates a housing that consists of two housing plates 2 and arranged in parallel and with a gap spacing from one another 3 consists of the same size and approximately rectangular in side view are.
  • the plates 2 and 3 are made of commercially drawn sheets.
  • the housing plates can be made from such commercial, drawn sheets 2 and 3 can be manufactured by punching, folding or the like.
  • the housing plates no longer need to be machined on the side surfaces to become. Rather, only the corners may be broken, although this is for the operation of the toggle lever device without Meaning is.
  • the housing plates 2 and 3 are both in the side view as well as in the cross section of the same shape, size and same thickness.
  • the toggle joint arrangement is arranged in the gap distance 23 (Fig. 3) between the two housing plates 2 and 3, the toggle joint arrangement is arranged.
  • the toggle joint assembly consists of a tension arm 4, the up and down, so in Direction A or B is pivotable about an axis 5 fixed to the housing. With the Clamping arm 4 can be interchangeably coupled to other components (not shown).
  • a lever part 7 is integrally connected, which via a Coupling axis 6 is coupled with a lever 8 which is integral with a Hand lever 9 is connected.
  • the lever 8 runs with its longitudinal axis 10 in obtuse angle ⁇ to the longitudinal axis 11 of the hand lever 9 Lever 8 coupled with the hand lever 9 in one piece.
  • pivot axis 12 In the transition area, i.e. at the intersection of the longitudinal axes 10 and 11, there is one arranged further pivot axis 12 with which a tab 13 is coupled, at its opposite end via a bearing axis 14 fixed to the housing between the housing plates 2 and 3 also in the direction A and B, ie up and is arranged pivotable (seen in the plane of the drawing).
  • the tongue 13 is assigned a spring element, in the present case as a leg spring 16 is formed, which with a spring leg 15 against the tab 13th acts while the other spring leg 17, for example, against one or against both housing plates 2 and 3 under tension on a spacer sleeve 24 is stored.
  • the spring leg 15 under Preload against the tab.
  • the leg spring 16 has the Tendency to at least hold the hand lever 9 or to push it up, around the hand lever 9 and thus the tension arm 4 in the open position hold.
  • the spring element can also be designed differently, for example as a torsion spring z. B. arranged on the axis 14 or a Be plastic block that bears against the underside of the tab 13.
  • the reference numeral 18 denotes an adjustment stop, which is located between the housing plates 2 and 3 extends and the pivoting range of the Clamping arm 4 limited.
  • This adjustment stop 18 can be made adjustable to adjust the exact swivel angle. This setting can done at the factory and / or by the customer.
  • At 19 there is another stop arranged, which limits the pivoting range of the hand lever 9.
  • connection dimensions of the toggle lever clamping device shown in the drawing agree with the so-called power clamps, i.e. with toggle clamps, the electrically or preferably pneumatically driven be, so that the hand tensioner shown in the drawing is compatible with power clamps.
  • connection dimensions are those Understand screw holes and dimensions that allow the from the drawing obvious hand clamps on such bolts, holes or the like in devices, in particular in the body shop Automotive industry, fasten with the normally power clamps become.
  • a hand clamp according to the invention Company standards of the automotive industry analogously as for power clamps. Any existing Interfering edges that must also be taken into account by power clamps are thus also taken into account by the manual tensioner according to the invention, since its transverse dimensions are also compatible with power clamps, are identical.
  • those to be used by the hand tensioner according to the invention Forces are identical to those of power clamps.
  • a particular advantage is the great simplicity of the construction of the invention Hand clamps. This becomes apparent when you look at, for example compares Figures 1 and 2 with Figures 3 and 4. The entire case consists only of the two housing plates 2 and 3, which do not require post-processing need. As a result, a hand clamp according to the invention can be used very low cost to be produced, which is only a small one A fraction of the cost of a manual clamp, e.g. one pneumatic driven toggle lever tensioning device.
  • the two housing plates 2 and 3 are otherwise by several spacers, e.g. B. 24, kept at a distance from each other. Otherwise, the two Housing plates 2 and 3 fastened by three bolts, one of which one is designated by reference numeral 20 in FIG. 4.
  • the adjustment stop 18 is fixed by a screw bolt 21, which at the same time serves to fasten the housing plates 2 and 3.
  • the spacer sleeves also have it in your hand with simple means precisely predict the transverse dimensions of the overall device, to ensure compatibility with power clamps. You can also these spacers on the end face in counterbores of the directed Surfaces of the housing plates 2 and 3 are fixed radially and axially, so that forces are also transmitted from the spacer sleeves to the housing plates can, which applies in particular to parts 18 and 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Mechanical Control Devices (AREA)
  • Clamps And Clips (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
EP98114147A 1998-01-09 1998-07-29 Dispositif à genouillère actionné à main Withdrawn EP0928664A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29800221 1998-01-09
DE29800221U 1998-01-09

Publications (2)

Publication Number Publication Date
EP0928664A2 true EP0928664A2 (fr) 1999-07-14
EP0928664A3 EP0928664A3 (fr) 2001-05-02

Family

ID=8051028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98114147A Withdrawn EP0928664A3 (fr) 1998-01-09 1998-07-29 Dispositif à genouillère actionné à main

Country Status (2)

Country Link
EP (1) EP0928664A3 (fr)
DE (1) DE29822135U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1302276A3 (fr) * 2001-10-11 2003-05-07 Am S.P.A. Système de verrouillage manuel pour dispositif de montage
US10800009B2 (en) 2016-01-20 2020-10-13 Delaware Capital Formation, Inc. Toggle clamp
CN112937703A (zh) * 2021-01-28 2021-06-11 徐州徐工筑路机械有限公司 一种备胎装置及平地机后松土器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115256281A (zh) * 2022-08-05 2022-11-01 苏州佳祺仕信息科技有限公司 一种定位解锁装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513680C2 (de) * 1985-04-16 1989-07-20 Josef Gerhard 4030 Ratingen Tünkers Druckmittelbetätigbare Kniehebelspannvorrichtung zum Festspannen von Werkstücken
CH682379A5 (de) * 1990-09-10 1993-09-15 Sawatzki Engineering Harry L S Vorrichtung zum Festklemmen eines Werkstückes.
DE9417667U1 (de) * 1994-11-08 1995-01-05 DE-STA-CO Metallerzeugnisse GmbH, 61449 Steinbach Spannvorrichtung
DE19530066A1 (de) * 1995-08-16 1997-02-20 Sta Co Mettallerzeugnisse Gmbh Spannvorrichtungs-Wechselbausatz
DE29701730U1 (de) * 1997-02-01 1997-04-30 Tünkers Maschinenbau GmbH, 40880 Ratingen Kniehebelspannvorrichtung, insbesondere zur Verwendung in Vorrichtungen und Schweißmaschinen des Karosseriebaus der Kfz-Industrie

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1302276A3 (fr) * 2001-10-11 2003-05-07 Am S.P.A. Système de verrouillage manuel pour dispositif de montage
US10800009B2 (en) 2016-01-20 2020-10-13 Delaware Capital Formation, Inc. Toggle clamp
CN112937703A (zh) * 2021-01-28 2021-06-11 徐州徐工筑路机械有限公司 一种备胎装置及平地机后松土器

Also Published As

Publication number Publication date
DE29822135U1 (de) 1999-02-18
EP0928664A3 (fr) 2001-05-02

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