EP3269509A1 - Pliers for punching holes on trapezoidal profiles - Google Patents

Pliers for punching holes on trapezoidal profiles Download PDF

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Publication number
EP3269509A1
EP3269509A1 EP17180819.9A EP17180819A EP3269509A1 EP 3269509 A1 EP3269509 A1 EP 3269509A1 EP 17180819 A EP17180819 A EP 17180819A EP 3269509 A1 EP3269509 A1 EP 3269509A1
Authority
EP
European Patent Office
Prior art keywords
pliers
trapezoidal
punch
legs
perforating
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
EP17180819.9A
Other languages
German (de)
French (fr)
Other versions
EP3269509B1 (en
Inventor
Oliver HÖLSCHER
Marc Hoffmann
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.)
H3 Tools & Co KG GmbH
Original Assignee
H3 Tools & Co KG GmbH
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Publication date
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Publication of EP3269509A1 publication Critical patent/EP3269509A1/en
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/32—Hand-held perforating or punching apparatus, e.g. awls
    • B26F1/36—Punching or perforating pliers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/002—Drive of the tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/243—Perforating, i.e. punching holes in profiles
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/086—Electric, magnetic, piezoelectric, electro-magnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/32—Hand-held perforating or punching apparatus, e.g. awls
    • B26F1/34—Hand-held perforating or punching apparatus, e.g. awls power actuated
    • 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
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses

Definitions

  • the invention relates to a Trapezlochlochzange with the features of the preamble of claim 1.
  • Trapezlochlochangen be used with which at the same time holes can be punched at the two oblique legs of the trapezoidal profile, where in turn cable routes, luminous bodies or cable guides can be fastened.
  • Such trapezoidal pliers must be manually operated and has a similar kinematic design as a pruning shears, that is, two pivotally interconnected pliers legs, each carrying a cutting punch, are relatively short, whereas starting from the hinge point to the other side substantially longer lever arms with handles are formed so that the user can muster the necessary forces for punching.
  • the object of the present invention is therefore to provide a Trapezlochlochzange with which the work described are much easier executable.
  • the two lever arms are formed on the side facing away from the two collets limbs side of the joint only very short and formed on their mutually facing inner edges with a profiling so that they can be coupled with an electric pressing tool for heating and plumbing needs.
  • Such pressing tools are basically known, for example from the DE 199 27 776 A1 ,
  • the pressing tools which can be placed thereon have two pressing legs with which crimped connections of pipe ends can be produced or fittings can be attached to a pipe end.
  • the punch pliers according to the invention has two pairs of stop surfaces.
  • a first pair is referred to as front abutment surfaces and is disposed with some offset of the connecting line of the two hinge points on the side of the front ends of the pincer leg; the other couple on the opposite Side of the connecting line.
  • Essential to the invention are u.a. the aspect ratio at the pincer legs.
  • the forward ends extending between a front tip carrying the punches and the bearing pins are significantly longer than the rear ends of the hole legs beyond the bearing pins.
  • the aspect ratio is at least 1.5: 1. Only in this way is it possible to have a large opening angle, which makes it possible to set the punches on both sides of the trapezoidal profile at the same time.
  • the trapezoidal pliers have a customizable closed position.
  • threaded pins can be inserted into designated tapped holes.
  • the pins can be adjusted by the thread so that they protrude more or less out of the stop surface, so that depending on the Trapezblechblechbreite the closing angle of the punch leg is limited.
  • the force-controlled pressing machine shuts off when the pins meet. Also possible is the one-sided use of a threaded pin so that it presses against the opposite stop surface.
  • An alternative way to limit the work path is to shorten / limit the way the pressure rollers. As soon as the pressure rollers can no longer penetrate deep to close to the retaining plate, it is no longer possible to close the jaws tightly.
  • a mechanical Wegverkürzung can also be achieved by the introduction of a screw between the two lower ends of the punch leg. The path of the pressure rollers is reduced by the height of the screw head.
  • the punching tool according to the invention has a defined symmetrical open position, in particular, in that a centering bolt is placed on the central axis between the trailing ends of the punching pliers leg lying beyond the bearing bolts. Together with a corresponding shape is achieved that the two pairs of jaw tong are forced into a symmetrical with respect to the central axis alignment.
  • the closure is preferably supported by a compression spring, but is carried out for the punching operation mainly by the force exerted on the pair of rollers of the electric pressing tool force.
  • the force acting on the perforated pliers on a comparatively thin-walled trapezoidal sheet metal profile must be severely limited. Therefore, only a certain closing path is permitted by the adjoining front abutment surfaces and a certain distance of the pincer leg to each other always maintained, which is so dimensioned that the trapezoidal sheet metal profile is not squeezed on its lateral flanks after the punches have penetrated therein.
  • a punch 50 is arranged on the respective inner flank. This has, for example, an end provided with a thread 51, so that via nuts 52 an axial adjustment and thus an adjustment of the penetration depth are possible.
  • the two punching pliers legs 10, 20 are connected to each other via a hinge unit 30, which is similar to the top and bottom.
  • a joint base plate 31 is provided in each case, which has two bearing bores 32.
  • the bearing bolts 33 are provided at both ends with a threaded bore, so that they can be screwed on washers 34 and screws 35 with the joint base plate 31.
  • a compression spring 40 holds the pincer legs 10, 20 in the closed position to facilitate transportation and handling.
  • the storage via two spaced apart bearing pins 33 has the advantage that no overlap of parts of the pincers 10, 20 is required, so that there is no weakening by reduced cross-sections.
  • the defined position and the symmetrical movement during closing and opening of the two pliers legs 10, 20 are achieved in that the coupling takes place with the electric pressing tool, which moves the two short ends 11, 21 by its roller drive similar.
  • the inner contour of the punching pliers legs 10, 20 is essential for the function of the Trapezlochlochzange 100.
  • the short ends 11, 21 must be rounded to facilitate the inlet of the rollers of the pressing tool. Between the ends 11, 21, the contour must taper in the direction of the hinge unit 30 to define an end region for the extension path of the roller pair. Stop surfaces 14 in the region of the hinge unit 30 on the one hand and an obliquely outwardly extending contour of the respective long ends 11, 21 of the punching pliers legs 10, 20 are required so that there is a defined closed position, in which the ends 12; 12 'and the punches 50 maintain a distance from each other and do not press against each other.
  • the outwardly fleeing long ends 12, 12 ' may be V-shaped to each other; but they are preferably rounded parabolically on the inside. This has the advantage that the ends 12, 12 'approximately parallel to each other and the mounting holes for the punches 50 can be introduced perpendicular to the ends 12.
  • FIG. 2 the open trapezoidal forceps 100 is shown in a side view, but without the required for use electric pressing tool 200, which is indicated here only by a dashed line.
  • the closed position is in Fig. 3 shown.
  • the punches 50 penetrate the trapezoidal sheet 300.
  • the punching is made with it.
  • the rollers 201 move back again, the two pliers legs 10, 20 can get back into their widely spread starting position.
  • a second preferred embodiment trapezoidal pliers 100 ' which in Fig. 4 is shown in exploded view, with respect to the shape of the hole pliers legs 10, 20 unchanged.
  • a hinge unit 30 ' is also formed with two parallel hinge plates 31' above and below the hole pliers legs 10, 20 also similar.
  • the trapezoidal pliers 100 'according to Fig. 4 in the joint unit 30 ' no screwing of the bearing pin 33' provided with the joint base plates 31 ', but an axial fixing of the bearing pin 33' on the joint base plates 31 via end-mounted circlips 34 '.
  • the hole pliers legs 10, 20 are held in a closed position by a compression spring 40, which is guided in blind holes in the stop surfaces 15.
  • the Trapezlochlochzange 100 has a arranged on the central axis locking unit 60' for a depth stop 67 '.
  • This serves to maintain the desired distance from the underside of the trapezoidal sheet metal profile 300 and accordingly perform the punching at the intended height of the lateral flanks of the trapezoidal sheet metal profile 300.
  • the depth stop 67 'in the form of an angled wire profile can be used in a receptacle of a threaded sleeve 62'.
  • the threaded sleeve 62 ' is screwed by a screw and a lock nut 63' with the joint base plate 31 '.
  • the Trapezlochlochzange 100 'in the joint unit 30' before a centering pin which is connected to at least one of the base plates 31 'and which causes both Lochzangenschenkel 10, 20 occupy a symmetrical open position, so that no skewing of the two pliers legs 10, 20th takes place because in this case the punch and punch 50 would set at different heights on the trapezoidal sheet 300 and could lead to a height offset of the stamped recesses.
  • Fig. 5a shows the Trapezlochlochzange 100 'according to the second embodiment of the invention in top view.
  • the tool according to the invention is connected to a pressing tool 200 and is driven via its roller pair 201.
  • Between the two pincer arms 10, 20 of the centering pin 35 ' is arranged, which is fixed to the central, rearward bore of the T-shaped base member 31 '.
  • Fig. 5b is the position of Trapezlochzangenschenkel 10, 20 opposite Fig. 5a unchanged.
  • the upper hinge base plate 31 ' including the locking unit 60' is removed in order to better represent the position of the two hole pliers legs 10, 20 to each other and to the centering pin 35 '.
  • the open position in which the front ends 12, 22 of the punch arms 10, 20 are spread apart from each other, they abut against each other at abutment surfaces 15, which lies slightly below the horizontal line extending through the two bearing pins 33 '.
  • the maximum splayed position is specified.
  • the two hole pliers legs 10, 20 bear with their rear ends 11, 21 on the centering pin 35 in order to achieve an exactly symmetrical alignment of the two hole pliers legs with respect to the central axis and to avoid tilting to the side.
  • the area of storage of the two hole pliers legs 10, 20 is in Fig. 5c shown in an enlarged detail.
  • the pliers legs 10, 20 are flat against each other.
  • the centering pin 35 ' is located between the rear ends 11, 21, with some play, so as to ensure in any case that the stop surfaces 15 are close to each other and no double fit is formed.
  • Fig. 6a is analogous to Fig. 5a the position of the Trapezlochlochzange 100 'according to the invention with respect to a trapezoidal sheet 300, wherein in this illustration, the punching leg 10 20 but are closed at maximum and the punching and pressing tools 50 have penetrated into the lateral profile legs of the trapezoidal sheet 300.
  • the depth stop 67 ' also indicates the correct positioning in relation to the trapezoidal sheet profile 300 in this position.
  • Fig. 6c again shows an enlarged view of the area of the storage of the two pliers legs 10, 20.
  • the two abutment surfaces 15 are no longer in front of each other after the front ends 12, 22 have been moved towards each other and beyond the storage line between the bearing pin 33 arranged rear ends 11, 21 have been spread apart from each other.
  • the spring 40 holds the closed position of the front leg of the punching pliers legs 10, 20. A contact with the centering pin 35 is no longer in this position.
  • Fig. 7 shows a Trapezlochlochzange 100 "according to a third embodiment This agrees with respect to the geometry of the Trapezlochzangenschenpenschenkel 10", 20 "and their connection via a hinge unit 14, etc. with the other Au Unitsformen. The difference is that the Trapezlochlochzangenschenkel 10", 20 “receiving recesses 16th "in the form of through threaded holes.
  • the tool according to the invention is in the representation of Fig. 7 not connected to a pressing tool 200. Shown is the position of Trapezlochlochzangenschenkel 10 ", 20" in the open position in which the front ends 12 ", 22" of the punching pliers legs 10 ", 20” are spread apart from each other and the rear abutment surfaces 15 "lie against each other.
  • the two Trapezlochlochzangenschenkel 10 ", 20” provided with grub screws 17 "as adjusting elements, which are introduced into the designated threaded holes 16".
  • the setscrews 17 can their distance with respect to the stop surfaces 14" on the inner edges of the hole pliers legs 10 ", 20” changed and thereby the closing angle can be adjusted so that a profile located between the front ends 11 ', 21 "profile is not crushed.
  • a second way to limit the closing angle between the Trapezlochzangenschenken 10 ", 20" is also in Fig. 7 displayed.
  • the schematically illustrated screw 19 "in the back area prevents any, complete curling of the roller pair 201 (s. Fig. 6a ).
  • the Trapezlochzangenschenkelschen 10 ", 20" can not reach their maximum closed position, which is desired for wider trapezoidal sheets.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Scissors And Nippers (AREA)

Abstract

Trapezlochzange (100'), wenigstens umfassend zwei spiegelbildlich zueinander angeordnete Zangenschenkel (10, 20) mit je einem Lochstempel (50) sowie eine Gelenkeinheit (30) zur Verbindung der beiden Lochzangenschenkel (10, 20),
dadurch gekennzeichnet,
- dass die von den vorderen Enden (12; 22) mit den Lochstempeln (50) weg weisenden Enden (11; 21) der Lochzangenschenkel (10, 20) zur Verbindung mit einer Doppelrollen-Vorschubgabel eines elektrischen Presswerkzeugs (200) ausgebildet sind;
- dass die Lochzangenschenkel (10, 20) an den vorderen Enden (12, 22) im Bereich der Gelenkeinheit (30) vordere Anschlagflächen (14) aufweisen, die in der Schließstellung aneinander anliegen, wobei zwischen den vorderen Enden (12; 22) der Lochzangenschenkel (10, 20) und zwischen den Lochstempeln (50) ein Abstand gewahrt bleibt.

Figure imgaf001
Trapezoidal perforated pliers (100 '), comprising at least two pliers legs (10, 20) arranged in mirror image with one another each with a punch (50) and a hinge unit (30) for connecting the two pliers legs (10, 20),
characterized,
in that the ends (11, 21) of the punch arms (10, 20) pointing away from the front ends (12, 22) with the punches (50) are formed for connection to a double roller feed fork of an electric pressing tool (200);
- That the punch arm legs (10, 20) at the front ends (12, 22) in the region of the hinge unit (30) front stop surfaces (14) which bear against each other in the closed position, wherein between the front ends (12; Punch leg (10, 20) and between the punches (50) a distance is maintained.
Figure imgaf001

Description

Die Erfindung betrifft eine Trapezlochzange mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a Trapezlochlochzange with the features of the preamble of claim 1.

Zur Befestigung von Installationen an einer aus Trapezblechprofilen gebildeten Deckenkonstruktion werden Trapezlochzangen eingesetzt, mit denen gleichzeitig an den beiden schrägen Schenkeln des Trapezprofils Löcher eingestanzt werden können, an denen wiederum Kabeltrassen, Leuchtkörper oder Leitungsführungen befestigbar sind. Eine solche Trapezlochzange muss handbetätigt werden und besitzt eine ähnliche kinematische Ausbildung wie eine Astschere, das heißt, zwei gelenkig miteinander verbundene Zangenschenkel, die jeweils einen Schneidstempel tragen, sind relativ kurz ausgebildet, wohingegen von dem Gelenkpunkt ausgehend zur anderen Seite hin wesentlich längere Hebelarme mit Handgriffen ausgebildet sind, damit der Benutzer die zum Stanzen erforderlichen Kräfte aufbringen kann.For mounting installations on a ceiling construction formed from trapezoidal sheet metal profiles Trapezlochlochangen be used with which at the same time holes can be punched at the two oblique legs of the trapezoidal profile, where in turn cable routes, luminous bodies or cable guides can be fastened. Such trapezoidal pliers must be manually operated and has a similar kinematic design as a pruning shears, that is, two pivotally interconnected pliers legs, each carrying a cutting punch, are relatively short, whereas starting from the hinge point to the other side substantially longer lever arms with handles are formed so that the user can muster the necessary forces for punching.

Die Arbeit mit einer Trapezlochzange ist sehr kräftezehrend und ermüdend, da in der Regel nicht nur wenige einzelne Ausstanzungen hergestellt werden müssen, sondern mehrere Reihen entlang größerer Längenabschnitte von Trapezblechen. Die Arbeiten müssen über Kopf ausgeführt werden und bedingt durch die lange Hebellänge muss der Benutzer aus einer weit abgespreizten Stellung der Hebel drücken.Working with a trapezoidal pliers is very labor-intensive and tedious, because usually not just a few individual punched out must be made, but several rows along larger lengths of trapezoidal sheets. The work must be performed overhead and due to the long lever length the user must press from a widely spread position of the lever.

Die Aufgabe der vorliegenden Erfindung besteht somit darin, eine Trapezlochzange anzugeben, mit welcher die beschriebenen Arbeiten wesentlich einfacher ausführbar sind.The object of the present invention is therefore to provide a Trapezlochlochzange with which the work described are much easier executable.

Diese Aufgabe wird durch eine Trapezlochzange mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a Trapezlochzangenzange with the features of claim 1.

Hierbei werden die beiden Hebelarme an der von den beiden Zangenschenkeln wegweisenden Seite des Gelenks nur sehr kurz ausgebildet und an ihren zueinander weisenden Innenflanken mit einer Profilierung ausgebildet, sodass sie mit einem elektrischen Presswerkzeug für den Heizungs- und Sanitärinstallationsbedarf koppelbar sind.Here, the two lever arms are formed on the side facing away from the two collets limbs side of the joint only very short and formed on their mutually facing inner edges with a profiling so that they can be coupled with an electric pressing tool for heating and plumbing needs.

Solche Presswerkzeuge sind grundsätzlich bekannt, beispielsweise aus der DE 199 27 776 A1 . Die darauf aufsetzbaren Presswerkzeuge besitzen zwei Pressschenkel, mit denen Quetschverbindungen von Rohrleitungsenden herstellbar sind oder Fittings an einem Rohrende angebracht werden können.Such pressing tools are basically known, for example from the DE 199 27 776 A1 , The pressing tools which can be placed thereon have two pressing legs with which crimped connections of pipe ends can be produced or fittings can be attached to a pipe end.

Durch die nach der Erfindung entfallenden langen Hebel, die für eine Handbetätigung einer Lochzange benötigt werden, und durch die Ansatzmöglichkeit eines elektrischen Presswerkzeugs ist eine wesentlich erleichterte Herstellung von Stanzungen an einem Trapezblech möglich. Auch wenn das Gesamtgewicht der Einheit aus einer erfindungsgemäß ausgebildeten Trapezlochzange und einem damit koppelbaren elektrischen Presswerkzeug nicht geringer ist als das Gewicht des bekannten Handwerkzeugs, so ist doch die Arbeitsweise wesentlich ergonomischer. Die Werkzeugeinheit muss lediglich an die zu bearbeitende Stelle geführt und dort gehalten werden. Die Führung der Werkzeugeinheit kann wesentlich näher am Körper erfolgen. Es ist nicht mehr notwendig, weit ausladende Bewegungen mit den Armen auszuführen und auch die zum Stanzen erforderlichen, erheblichen Kräfte müssen nicht mehr durch Muskelkraft aufgebracht werden. Aufgrund der weiten Verbreitung der Rohrpresswerkzeuge ist die erfindungsgemäße Trapezlochzange auch kostengünstig einsetzbar, da die elektrische Antriebseinheit des Presswerkzeugs entweder in den Handwerksbetrieben bereits vorhanden ist oder in verschiedenen Varianten am Markt verfügbar ist.By attributable to the invention long lever that are needed for a manual operation of a punch, and by the possibility of approach of an electric pressing tool a much easier production of punching on a trapezoidal sheet is possible. Even if the total weight of the unit of an inventively designed Trapezlochlochzange and a so coupled electric pressing tool is not less than the weight of the known hand tool, but the way it works is much more ergonomic. The tool unit only has to be guided to the point to be processed and held there. The leadership of the tool unit can be done much closer to the body. It is no longer necessary to carry out sweeping movements with the arms and also the considerable forces required for punching no longer need to be applied by muscle power. Due to the widespread use of pipe pressing tools, the trapezoidal pliers according to the invention can also be used cost-effectively, since the electric drive unit of the pressing tool either already exists in the craft industry or is available on the market in various variants.

Die erfindungsgemäße Lochzange besitzt zwei Paare von Anschlagflächen. Ein erstes Paar wird als vordere Anschlagflächen bezeichnet und ist mit etwas Versatz der Verbindungslinie der beiden Gelenkpunkte auf der Seite der vorderen Enden der Lochzangenschenkel angeordnet; das andere Paar auf der gegenüberliegenden Seite der Verbindungslinie. Durch die hinteren Anschlagflächen wird der Öffnungsweg der Lochzangenschenkel begrenzt.The punch pliers according to the invention has two pairs of stop surfaces. A first pair is referred to as front abutment surfaces and is disposed with some offset of the connecting line of the two hinge points on the side of the front ends of the pincer leg; the other couple on the opposite Side of the connecting line. By the rear abutment surfaces of the opening path of the punch leg is limited.

Erfindungswesentlich sind u.a. die Längenverhältnis an den Lochzangenschenkeln. Die vorderen Enden, die sich zwischen einer vorderen Spitze, die die Lochstempel trägt, und den Lagerbolzen erstrecken, sind deutlich länger alsi die hinteren Enden der Lochschenkeln jenseits der Lagerbolzen. Das Längenverhältnis ist mindestens 1,5 : 1. Nur so wird ein großer Öffnungswinkel ermöglicht, der es ermöglicht, an beiden Seiten des Trapezprofils zugleich die Lochstempel anzusetzen.Essential to the invention are u.a. the aspect ratio at the pincer legs. The forward ends extending between a front tip carrying the punches and the bearing pins are significantly longer than the rear ends of the hole legs beyond the bearing pins. The aspect ratio is at least 1.5: 1. Only in this way is it possible to have a large opening angle, which makes it possible to set the punches on both sides of the trapezoidal profile at the same time.

Kommen Trapezprofile mit unterschiedlichen Breiten zum Einsatz, verfügt die Trapezlochzange über eine anpassbare Schließstellung. Je nachdem, welche Trapezbleche gelocht werden, können Gewindestifte in dafür vorgesehene Gewindebohrungen eingefügt werden. Die Stifte können durch das Gewinde so eingestellt werden, dass sie mehr oder weniger aus der Anschlagfläche herausragen, so dass in Abhängigkeit zur Trapezblechbreite der Schließwinkel der Lochzangenschenkel begrenzt wird. Die kraftgesteuerte Pressmaschine schaltet beim Aufeinandertreffen der Stifte ab. Möglich ist auch die einseitige Verwendung eines Gewindestiftes, sodass dieser gegen die gegenüberliegende Anschlagfläche drückt.If trapezoidal profiles with different widths are used, the trapezoidal pliers have a customizable closed position. Depending on which trapezoidal sheets are punched, threaded pins can be inserted into designated tapped holes. The pins can be adjusted by the thread so that they protrude more or less out of the stop surface, so that depending on the Trapezblechblechbreite the closing angle of the punch leg is limited. The force-controlled pressing machine shuts off when the pins meet. Also possible is the one-sided use of a threaded pin so that it presses against the opposite stop surface.

Eine alternative Möglichkeit, um den Arbeitsweg zu begrenzen, liegt darin, den Weg der Druckrollen zu verkürzen/limitieren. Sobald die Druckrollen nicht mehr tief bis nah an die Halteplatte eintauchen können, ist auch eine enge Zuhaltung der Backen nicht mehr möglich. Eine mechanische Wegverkürzung kann auch durch das Einbringen einer Schraube zwischen den beiden unteren Enden der Lochzangenschenkel erreicht werden. Der Weg der Druckrollen wird um die Höhe des Schraubenkopfes verringert.An alternative way to limit the work path is to shorten / limit the way the pressure rollers. As soon as the pressure rollers can no longer penetrate deep to close to the retaining plate, it is no longer possible to close the jaws tightly. A mechanical Wegverkürzung can also be achieved by the introduction of a screw between the two lower ends of the punch leg. The path of the pressure rollers is reduced by the height of the screw head.

Die Lochzange nach der Erfindung besitzt insbesondere dadurch eine definierte symmetrische Öffnungsstellung, dass zwischen den jenseits der Lagerbolzen liegenden, hinteren Enden der Lochzangenschenkel ein Zentrierbolzen auf der Mittelachse platziert ist. Zusammen mit einer entsprechenden Formgebung wird erreicht, dass die beiden Lochzangenschenkel in eine in Bezug auf die Mittelachse symmetrische Ausrichtung gezwungen werden.The punching tool according to the invention has a defined symmetrical open position, in particular, in that a centering bolt is placed on the central axis between the trailing ends of the punching pliers leg lying beyond the bearing bolts. Together with a corresponding shape is achieved that the two pairs of jaw tong are forced into a symmetrical with respect to the central axis alignment.

Die Schließung wird vorzugsweise durch eine Druckfeder unterstützt, erfolgt aber für den Stanzvorgang überwiegend durch die über das Rollenpaar des elektrischen Presswerkzeugs ausgebübte Kraft. Anders als beim Pressen von sanitären Fittings und Rohrverbindungen muss aber die Kraft, die von der Lochzange auf ein vergleichsweise dünnwandiges Trapezblechprofil einwirkt, stark begrenzt werden. Daher wird durch die aneinander anliegenden vorderen Anschlagflächen nur eine bestimmter Schließweg zugelassen und ein bestimmter Abstand der Lochzangenschenkel zueinander stets gewahrt, der so bemessen ist, dass das Trapezblechprofil nicht an seinen seitlichen Flanken gequetscht wird, nachdem die Lochstempel darin eingedrungen sind.The closure is preferably supported by a compression spring, but is carried out for the punching operation mainly by the force exerted on the pair of rollers of the electric pressing tool force. Unlike the pressing of sanitary fittings and pipe connections, however, the force acting on the perforated pliers on a comparatively thin-walled trapezoidal sheet metal profile must be severely limited. Therefore, only a certain closing path is permitted by the adjoining front abutment surfaces and a certain distance of the pincer leg to each other always maintained, which is so dimensioned that the trapezoidal sheet metal profile is not squeezed on its lateral flanks after the punches have penetrated therein.

Die Erfindung wird anhand des Hauptanwendungszwecks, des Stanzens von Ausnehmungen in einem Blechprofil beschrieben, wozu Lochstempel an den Lochzangenschenkeln eingesetzt werden. Möglich ist aber auch, Schneidstempel vorzusehen, um Einschnitte in Blech einbringen zu können, oder Nietstempel, um Nieten einsetzen zu können. Die Bezeichnung "Lochstempel" schließt daher andersartig geformte Werkzeugeinsätze ein.The invention will be described with reference to the main purpose of the application, the punching of recesses in a sheet metal profile, for which punches are used on the pincer arms. But it is also possible to provide cutting punch to bring incisions in sheet metal, or riveting to use rivets can. The term "punch" therefore includes differently shaped tool inserts.

Die Erfindung wird nachfolgend mit Bezug auf die in den Zeichnungen dargestellten Ausführungsbeispiele näher erläutert. Die Figuren zeigen im Einzelnen:

Fig. 1
eine erfindungsgemäße Trapezlochzange gemäß einer ersten Ausführungsform in perspektivischer Explosionsdarstellung;
Fig. 2
die Trapezlochzange in seitlicher Ansicht in geöffneter Stellung;
Fig. 3
die Trapezlochzange in seitlicher Ansicht in geschlossener Stellung;
Fig. 4
eine erfindungsgemäße Trapezlochzange gemäß einer zweiten Ausführungsform in perspektivischer Explosionsdarstellung;
Fig. 5a
die Trapezlochzange nach Fig. 4 in seitlicher Ansicht in geöffneter Stellung;
Fig. 5b
Teile der Trapezlochzange nach Fig. 4 in seitlicher Ansicht in geöffneter Stellung;
Fig. 5c
ein Detail aus Fig. 5b;
Fig. 6a
die Trapezlochzange nach Fig. 4 in seitlicher Ansicht in geschlossener Stellung;
Fig. 6b
Teile der Trapezlochzange nach Fig. 4 in seitlicher Ansicht in geschlossener Stellung;
Fig. 6c
ein Detail aus Fig. 6b und
Fig. 7
eine erfindungsgemäße Trapezlochzange gemäß einer dritten Ausführungsform mit variablem Anschlag.
The invention will be explained in more detail with reference to the embodiments illustrated in the drawings. The figures show in detail:
Fig. 1
an inventive Trapezlochlochzange according to a first embodiment in a perspective exploded view;
Fig. 2
the Trapezlochlochzange in lateral view in the open position;
Fig. 3
the Trapezlochlochzange in lateral view in the closed position;
Fig. 4
an inventive Trapezlochlochzange according to a second embodiment in a perspective exploded view;
Fig. 5a
the trapezoidal pliers after Fig. 4 in lateral view in open position;
Fig. 5b
Parts of the Trapezlochlochzange after Fig. 4 in lateral view in open position;
Fig. 5c
a detail from Fig. 5b ;
Fig. 6a
the trapezoidal pliers after Fig. 4 in lateral view in closed position;
Fig. 6b
Parts of the Trapezlochlochzange after Fig. 4 in lateral view in closed position;
Fig. 6c
a detail from Fig. 6b and
Fig. 7
a trapezoidal punch according to a third embodiment of the invention with variable stop.

Figur 1 zeigt eine Trapezlochzange 100 mit all ihren Einzelteilen in einer Explosionsansicht. Die wesentlichen Bauteile sind:

  • zwei spiegelbildlich zueinander ausgebildete Lochzangenschenkel 10, 20;
  • zwei Lochstempel 50 und
  • eine Gelenkeinheit 30.
FIG. 1 shows a trapezoidal pliers 100 with all their individual parts in an exploded view. The essential components are:
  • two mirror-image mutually formed hole pliers legs 10, 20;
  • two punches 50 and
  • a hinge unit 30.

Im Endbereich jedes Lochzangenschenkels 10, 20 ist an der jeweiligen Innenflanke ein Lochstempel 50 angeordnet. Dieser besitzt beispielsweise ein mit einem Gewinde 51 versehenes Ende, sodass über Muttern 52 eine axiale Verstellung und damit eine Verstellung der Eindringtiefe möglich sind.In the end region of each hole pliers limb 10, 20, a punch 50 is arranged on the respective inner flank. This has, for example, an end provided with a thread 51, so that via nuts 52 an axial adjustment and thus an adjustment of the penetration depth are possible.

Die beiden Lochzangenschenkel 10, 20 sind über eine Gelenkeinheit 30 miteinander verbunden, welche an der Ober- und Unterseite gleichartig ausgebildet ist. Dort ist jeweils eine Gelenkbasisplatte 31 vorgesehen, die zwei Lagerbohrungen 32 aufweist. Durch eine Bohrung 13, 23 an jedem Lochzangenschenkel 10, 20 ist ein Lagerbolzen 33 geführt. Die Lagerbolzen 33 sind an beiden Enden mit einer Gewindebohrung versehen, sodass sie über Unterlegscheiben 34 und Schrauben 35 mit der Gelenkbasisplatte 31 verschraubbar sind.The two punching pliers legs 10, 20 are connected to each other via a hinge unit 30, which is similar to the top and bottom. There, a joint base plate 31 is provided in each case, which has two bearing bores 32. Through a bore 13, 23 on each hole pliers legs 10, 20, a bearing pin 33 is guided. The bearing bolts 33 are provided at both ends with a threaded bore, so that they can be screwed on washers 34 and screws 35 with the joint base plate 31.

Eine Druckfeder 40 hält die Lochzangenschenkel 10, 20 in der Schließstellung, um Transport und Handhabung zu erleichtern.A compression spring 40 holds the pincer legs 10, 20 in the closed position to facilitate transportation and handling.

Die Lagerung über zwei mit Abstand zueinander angeordnete Lagerbolzen 33 hat den Vorteil, dass keine Überlappung von Teilen der Lochzangenschenkel 10, 20 erforderlich ist, so dass auch keine Schwächung durch reduzierte Querschnitte vorliegt. Die definierte Stellung und die symmetrische Bewegung beim Schließen und Öffnen der beiden Lochzangenschenkel 10, 20 werden dadurch erreicht, dass die Kopplung mit dem elektrischen Presswerkzeug erfolgt, welches durch seinen Rollenantrieb die beiden kurzen Enden 11, 21 gleichartig bewegt.The storage via two spaced apart bearing pins 33 has the advantage that no overlap of parts of the pincers 10, 20 is required, so that there is no weakening by reduced cross-sections. The defined position and the symmetrical movement during closing and opening of the two pliers legs 10, 20 are achieved in that the coupling takes place with the electric pressing tool, which moves the two short ends 11, 21 by its roller drive similar.

Die Innenkontur der Lochzangenschenkel 10, 20 ist wesentlich für die Funktion der Trapezlochzange 100. Die kurzen Enden 11, 21 müssen gerundet ausgebildet sein, um den Einlauf der Rollen des Presswerkzeugs zu erleichtern. Zwischen den Enden 11, 21 muss sich die Kontur in Richtung der Gelenkeinheit 30 verjüngen, um einen Endbereich für den Ausfahrweg des Rollenpaars zu definieren. Anschlagflächen 14 im Bereich der Gelenkeinheit 30 einerseits und eine schräg nach außen verlaufende Kontur der jeweiligen langen Enden 11, 21 der Lochzangenschenkel 10, 20 sind erforderlich, damit es eine definierte Schließstellung gibt, in der die Enden 12; 12' und auch die Lochstempel 50 einen Abstand zueinander wahren und nicht gegeneinander drücken. Dieser Abstand muss auf das zu bearbeitende Trapezprofil angepasst werden, so dass das Profil nur gestanzt, aber nicht zerquetscht wird. Die nach außen fliehenden langen Enden 12, 12' können V-förmig zueinander ausgebildet sein; sie sind aber vorzugsweise an der Innenseite halbparabelförmig gerundet. Hierdurch ergibt sich der Vorteil, dass die den Enden 12, 12' annähernd parallel zueinander verlaufen und die Befestigungsbohrungen für die Lochstempel 50 senkrecht zu den Enden 12 eingebracht werden können.The inner contour of the punching pliers legs 10, 20 is essential for the function of the Trapezlochlochzange 100. The short ends 11, 21 must be rounded to facilitate the inlet of the rollers of the pressing tool. Between the ends 11, 21, the contour must taper in the direction of the hinge unit 30 to define an end region for the extension path of the roller pair. Stop surfaces 14 in the region of the hinge unit 30 on the one hand and an obliquely outwardly extending contour of the respective long ends 11, 21 of the punching pliers legs 10, 20 are required so that there is a defined closed position, in which the ends 12; 12 'and the punches 50 maintain a distance from each other and do not press against each other. This distance must be adapted to the trapezoidal profile to be machined, so that the profile is only punched, but not crushed. The outwardly fleeing long ends 12, 12 'may be V-shaped to each other; but they are preferably rounded parabolically on the inside. This has the advantage that the ends 12, 12 'approximately parallel to each other and the mounting holes for the punches 50 can be introduced perpendicular to the ends 12.

In Figur 2 ist die geöffnete Trapezlochzange 100 in seitlicher Ansicht dargestellt, jedoch ohne das zur Benutzung erforderliche elektrische Presswerkzeug 200, das hier nur durch eine strichpunktierte Linie angedeutet ist.In FIG. 2 the open trapezoidal forceps 100 is shown in a side view, but without the required for use electric pressing tool 200, which is indicated here only by a dashed line.

Die beiden Lochzangenschenkel 10, 20 umschließen ein Trapezblechprofil 300. Durch Betätigung des Presswerkzeugs 200, auf das die Trapezlochzange 100 aufgesetzt ist, werden die Rollen 201 des Presswerkzeugs 200 zwischen die kurzen, gerundeten Schenkel 11, 21 der beiden Lochzangenschenkel 10, 20 gedrückt, wodurch eine Schließbewegung erzwungen wir.By pressing the pressing tool 200, on which the trapezoidal punch 100 is mounted, the rollers 201 of the pressing tool 200 between the short, rounded legs 11, 21 of the two pliers legs 10, 20 are pressed, whereby we force a closing movement.

Die Schließstellung ist in Fig. 3 gezeigt. Die Lochstempel 50 durchdringen das Trapezblech 300. Die Stanzung ist damit hergestellt. Sobald die Rollen 201 wieder zurückfahren, können die beiden Zangenschenkel 10, 20 wieder in ihre weit abgespreizte Ausgangsstellung zurückgelangen.The closed position is in Fig. 3 shown. The punches 50 penetrate the trapezoidal sheet 300. The punching is made with it. As soon as the rollers 201 move back again, the two pliers legs 10, 20 can get back into their widely spread starting position.

Eine zweite bevorzugte Ausführungsform eine Trapezlochzange 100', die in Fig. 4 in Explosionsansicht dargestellt ist, ist hinsichtlich der Form der Lochzangenschenkel 10, 20 unverändert. Eine Gelenkeinheit 30' ist mit zwei parallelen Gelenkplatten 31' ober- und unterhalb der Lochzangenschenkel 10, 20 ebenfalls gleichartig ausgebildet. Im Unterschied zu der ersten Ausführungsform ist bei der Trapezlochzange 100' gemäß Fig. 4 in der Gelenkeinheit 30' keine Verschraubung der Lagerbolzen 33' mit den Gelenkbasisplatten 31' vorgesehen, sondern eine axiale Festlegung der Lagerbolzen 33' an den Gelenkbasisplatten 31 über endseitig aufgesetzte Sicherungsringe 34'. Die Lochzangenschenkel 10, 20 werden über eine Druckfeder 40, die in Sacklöchern in den Anschlagflächen 15 geführt ist, in einer Schließstellung gehalten.A second preferred embodiment trapezoidal pliers 100 ', which in Fig. 4 is shown in exploded view, with respect to the shape of the hole pliers legs 10, 20 unchanged. A hinge unit 30 'is also formed with two parallel hinge plates 31' above and below the hole pliers legs 10, 20 also similar. In contrast to the first embodiment, the trapezoidal pliers 100 'according to Fig. 4 in the joint unit 30 'no screwing of the bearing pin 33' provided with the joint base plates 31 ', but an axial fixing of the bearing pin 33' on the joint base plates 31 via end-mounted circlips 34 '. The hole pliers legs 10, 20 are held in a closed position by a compression spring 40, which is guided in blind holes in the stop surfaces 15.

Weiterhin besitzt die Trapezlochzange 100' zusätzlich eine auf der Mittelachse angeordnete Arretiereinheit 60' für einen Tiefenanschlag 67'. Dieser dient dazu, den gewünschten Abstand von der Unterseite des Trapezblechprofils 300 einzuhalten und dementsprechend die Stanzungen auf der vorgesehenen Höhe der seitlichen Flanken des Trapezblechprofils 300 durchzuführen. Der Tiefenanschlag 67' in Form eines abgewinkelten Drahtprofils ist in eine Aufnahme einer Gewindemuffe 62' einsetzbar. Die Gewindemuffe 62' ist über eine Schraube und einer Kontermutter 63' mit der Gelenkbasisplatte 31' verschraubt. Am anderen Ende der Gewindemuffe 62' ist ein weiteres Schraubelement 66' eingesetzt, das über einen Knauf 65' einfach verdreht werden kann. Wenn der Gewindeschaft des Schraubelements 66' auf das eingesteckte Tiefenanschlagelement 67' trifft, wird dieses festgeklemmt und die eingestellte Anschlagtiefe wird fixiert.Furthermore, the Trapezlochlochzange 100 'additionally has a arranged on the central axis locking unit 60' for a depth stop 67 '. This serves to maintain the desired distance from the underside of the trapezoidal sheet metal profile 300 and accordingly perform the punching at the intended height of the lateral flanks of the trapezoidal sheet metal profile 300. The depth stop 67 'in the form of an angled wire profile can be used in a receptacle of a threaded sleeve 62'. The threaded sleeve 62 'is screwed by a screw and a lock nut 63' with the joint base plate 31 '. At the other end of the threaded sleeve 62 'is another screw 66' is used, which can be easily rotated by a knob 65 '. If the threaded shaft of the screw 66 'hits the inserted depth stop element 67', this is clamped and the set stop depth is fixed.

Außerdem weist die Trapezlochzange 100' in der Gelenkeinheit 30' einen Zentrierzapfen vor, der mit wenigstens einer der Basisplatten 31' verbunden ist und der bewirkt, dass beide Lochzangenschenkel 10, 20 eine symmetrische Öffnungsstellung einnehmen, so dass keine Schiefstellung der beiden Lochzangenschenkel 10, 20 erfolgt, weil in diesem Falle die Loch- und Pressstempel 50 auf unterschiedlicher Höhe am Trapezblechprofil 300 ansetzen würden und zu einem Höhenversatz der eingestanzten Ausnehmungen führen könnte.In addition, the Trapezlochlochzange 100 'in the joint unit 30' before a centering pin which is connected to at least one of the base plates 31 'and which causes both Lochzangenschenkel 10, 20 occupy a symmetrical open position, so that no skewing of the two pliers legs 10, 20th takes place because in this case the punch and punch 50 would set at different heights on the trapezoidal sheet 300 and could lead to a height offset of the stamped recesses.

Fig. 5a zeigt die Trapezlochzange 100' gemäß der zweiten Ausführungsform der Erfindung in Ansicht von oben. Das erfindungsgemäße Werkzeug ist mit einem Presswerkzeug 200 verbunden und wird über dessen Rollenpaar 201 angetrieben. Zwischen den beiden Lochzangenschenkeln 10, 20 ist der Zentrierzapfen 35' angeordnet, der an der zentralen, rückwärtigen Bohrung des T-förmigen Basiselements 31' befestigt ist. Fig. 5a shows the Trapezlochlochzange 100 'according to the second embodiment of the invention in top view. The tool according to the invention is connected to a pressing tool 200 and is driven via its roller pair 201. Between the two pincer arms 10, 20 of the centering pin 35 'is arranged, which is fixed to the central, rearward bore of the T-shaped base member 31 '.

In der in Fig. 5a dargestellten, geöffneten Stellung ist das Rollenpaar 201 des Presswerkzeugs 200 noch nicht zwischen die hinteren Enden 11, 21 der Trapezlochzange 100' eingeschoben. Entsprechend sind die beiden Lochzangenschenkel 10, 20 noch voneinander abgespreizt. Das Tiefenanschlagelement 67' ist so eingestellt, dass es an der Unterseite des Trapezblechprofils 300 anliegt.In the in Fig. 5a shown, open position, the roller pair 201 of the pressing tool 200 is not yet inserted between the rear ends 11, 21 of the Trapezlochzangen 100 '. Accordingly, the two punching pliers legs 10, 20 are still spread apart from each other. The depth stop element 67 'is adjusted so that it rests against the underside of the trapezoidal sheet metal profile 300.

In Fig. 5b ist die Stellung der Trapezlochzangenschenkel 10, 20 gegenüber Fig. 5a unverändert. Jedoch ist die obere Gelenkbasisplatte 31' einschließlich der Arretiereinheit 60' entfernt, um die Stellung der beiden Lochzangenschenkel 10, 20 zueinander und zu dem Zentrierbolzen 35' besser darstellen zu können. In der geöffneten Stellung, in welcher die vorderen Enden 12, 22 der Lochzangenschenkel 10, 20 voneinander abgespreizt sind, liegen diese an Anschlagflächen 15 aneinander an, welche sich wenig unterhalb der durch die beiden Lagerbolzen 33' erstreckenden horizontalen Linie liegt. Hierdurch ist die maximal abgespreizte Stellung vorgegeben. Außerdem liegen die beiden Lochzangenschenkel 10, 20 mit ihren hinteren Enden 11, 21 an dem Zentrierbolzen 35 an, um eine exakt symmetrische Ausrichtung der beiden Lochzangenschenkel in Bezug auf die Mittelachse zu erreichen und ein Verkanten zur Seite hin zu vermeiden.In Fig. 5b is the position of Trapezlochzangenschenkel 10, 20 opposite Fig. 5a unchanged. However, the upper hinge base plate 31 'including the locking unit 60' is removed in order to better represent the position of the two hole pliers legs 10, 20 to each other and to the centering pin 35 '. In the open position, in which the front ends 12, 22 of the punch arms 10, 20 are spread apart from each other, they abut against each other at abutment surfaces 15, which lies slightly below the horizontal line extending through the two bearing pins 33 '. As a result, the maximum splayed position is specified. In addition, the two hole pliers legs 10, 20 bear with their rear ends 11, 21 on the centering pin 35 in order to achieve an exactly symmetrical alignment of the two hole pliers legs with respect to the central axis and to avoid tilting to the side.

Der Bereich der Lagerung der beiden Lochzangenschenkel 10, 20 ist in Fig. 5c in einem vergrößerten Detail dargestellt. An den Anschlagflächen 15 liegen die Lochzangenschenkel 10, 20 flächig aneinander an. Der Zentrierbolzen 35' liegt zwischen den hinteren Enden 11, 21, wobei etwas Spiel besteht, damit auf jeden Fall sichergestellt ist, dass die Anschlagflächen 15 dicht voreinander liegen und keine Doppelpassung gebildet wird.The area of storage of the two hole pliers legs 10, 20 is in Fig. 5c shown in an enlarged detail. At the stop surfaces 15, the pliers legs 10, 20 are flat against each other. The centering pin 35 'is located between the rear ends 11, 21, with some play, so as to ensure in any case that the stop surfaces 15 are close to each other and no double fit is formed.

In Fig. 6a ist analog zu Fig. 5a die Stellung der erfindungsgemäßen Trapezlochzange 100' in Bezug auf ein Trapezblechprofil 300 dargestellt, wobei in dieser Darstellung die Lochzangenschenkel 10 20 jedoch maximal geschlossen sind und die Loch- und Presswerkzeuge 50 in die seitlichen Profilschenkel des Trapezblechprofils 300 eingedrungen sind. Der Tiefenanschlag 67' zeigt auch in dieser Stellung die korrekte Positionierung in Bezug auf das Trapezblechprofil 300 an.In Fig. 6a is analogous to Fig. 5a the position of the Trapezlochlochzange 100 'according to the invention with respect to a trapezoidal sheet 300, wherein in this illustration, the punching leg 10 20 but are closed at maximum and the punching and pressing tools 50 have penetrated into the lateral profile legs of the trapezoidal sheet 300. The depth stop 67 'also indicates the correct positioning in relation to the trapezoidal sheet profile 300 in this position.

In Fig. 6b ist wiederum die obere Gelenkbasisplatte 31' und die Arretiereinheit 60' entfernt. Erkennbar ist, dass die Anschlagflächen 15 nicht mehr aneinander anliegen, sodass der Blick auf die zwischen den Lochzangenschenkel 10, 20 angeordnete Druckfeder 40 freigegeben ist.In Fig. 6b again, the upper hinge base plate 31 'and the locking unit 60' are removed. It can be seen that the abutment surfaces 15 no longer abut each other, so that the view is released on the pressure spring 40 arranged between the hole pliers legs 10, 20.

Fig. 6c zeigt wiederum eine vergrößerte Darstellung aus dem Bereich der Lagerung der beiden Lochzangenschenkel 10, 20. Wie bereits ausgeführt, liegen die beiden Anschlagflächen 15 nicht mehr voreinander, nachdem die vorderen Enden 12, 22 aufeinander zu bewegt worden sind und die jenseits der Lagerlinie zwischen den Lagerbolzen 33 angeordneten hinteren Enden 11, 21 voneinander abgespreizt worden sind. Die Feder 40 hält die Schließstellung der vorderen Schenkel der Lochzangenschenkel 10, 20. Ein Kontakt zu dem Zentrierbolzen 35 besteht in dieser Stellung nicht mehr. Fig. 6c again shows an enlarged view of the area of the storage of the two pliers legs 10, 20. As already stated, the two abutment surfaces 15 are no longer in front of each other after the front ends 12, 22 have been moved towards each other and beyond the storage line between the bearing pin 33 arranged rear ends 11, 21 have been spread apart from each other. The spring 40 holds the closed position of the front leg of the punching pliers legs 10, 20. A contact with the centering pin 35 is no longer in this position.

Fig. 7 zeigt eine Trapezlochzange 100" gemäß einer dritten Ausführungsform. Diese stimmt hinsichtlich der Geometrie der Trapezlochzangenschenkel 10", 20" und deren Verbindung über eine Gelenkeinheit 14 usw. mit den andern Auführungsformen überein. Unterschiedlich ist, dass die Trapezlochzangenschenkel 10", 20" Aufnahmeaussnehmungen 16" in Form von durchgehenden Gewindebohrungen aufweisen. Fig. 7 shows a Trapezlochlochzange 100 "according to a third embodiment This agrees with respect to the geometry of the Trapezlochzangenschenpenschenkel 10", 20 "and their connection via a hinge unit 14, etc. with the other Auführungsformen.The difference is that the Trapezlochlochzangenschenkel 10", 20 "receiving recesses 16th "in the form of through threaded holes.

Das erfindungsgemäße Werkzeug ist in der Darstellung der Fig. 7 nicht mit einem Presswerkzeug 200 verbunden. Gezeigt ist die Stellung der Trapezlochzangenschenkel 10", 20" in geöffneter Stellung, in welcher die vorderen Enden 12", 22" der Lochzangenschenkel 10", 20" maximal voneinander abgespreizt sind und die hinteren Anschlagflächen 15" aneinander liegen.The tool according to the invention is in the representation of Fig. 7 not connected to a pressing tool 200. Shown is the position of Trapezlochlochzangenschenkel 10 ", 20" in the open position in which the front ends 12 ", 22" of the punching pliers legs 10 ", 20" are spread apart from each other and the rear abutment surfaces 15 "lie against each other.

Bei der Trapezlochzange 100" sind gleich zwei Einrichtungen vorgesehen, um den Anschlagspunkt der Lochzangenschenkel 10", 20" zu verändern und darüber den Schließwinkel und den Freiraum zwischen deren vorderen Enden 11", 21" einstellen zu können.In the trapezoidal pliers 100 "two devices are provided to change the attachment point of the punching pliers legs 10", 20 "and above the closing angle and the space between the front ends 11", 21 "can set.

Zu einen sind die beiden Trapezlochzangenschenkel 10", 20" mit Gewindestiften 17" als Einstellelemente versehen, die in die dafür vorgesehenen Gewindebohrungen 16" eingebracht sind. Durch Drehen der Gewindestifte 17" kann ihr Abstand in Bezug auf die Anschlagflächen 14" an den Innenflanken der Lochzangenschenkel 10", 20" verändert und dadurch der Schließwinkel so eingestellt werden, dass ein zwischen den vorderen Enden 11', 21" befindliches Profil nicht gequetscht wird.For one, the two Trapezlochlochzangenschenkel 10 ", 20" provided with grub screws 17 "as adjusting elements, which are introduced into the designated threaded holes 16". By turning the setscrews 17 "can their distance with respect to the stop surfaces 14" on the inner edges of the hole pliers legs 10 ", 20" changed and thereby the closing angle can be adjusted so that a profile located between the front ends 11 ', 21 "profile is not crushed.

Eine zweite Möglichkeit, um den Schließwinkel zwischen den Trapezlochzangenschenkeln 10", 20" zu begrenzen, ist ebenfalls in Fig. 7 abgebildet. Die schematisch dargestellte Schraube 19" im rückwrtigen Bereich verhindert das etwaige, vollständige Einrollen des Rollenpaars 201 (s. Fig. 6a). In der Folge können die Trapezlochzangenschenkel 10", 20" nicht ihre maximale Schließstellung erreichen, was bei breiteren Trapezblechen so gewünscht ist.A second way to limit the closing angle between the Trapezlochzangenschenken 10 ", 20", is also in Fig. 7 displayed. The schematically illustrated screw 19 "in the back area prevents any, complete curling of the roller pair 201 (s. Fig. 6a ). As a result, the Trapezlochzangenschenkelschen 10 ", 20" can not reach their maximum closed position, which is desired for wider trapezoidal sheets.

Claims (11)

Trapezlochzange (100; 100'), wenigstens umfassend zwei spiegelbildlich zueinander angeordnete Zangenschenkel (10, 20; 10", 20") mit je einem Lochstempel (50; 50") sowie eine Gelenkeinheit (30; 30') zur Verbindung der beiden Lochzangenschenkel (10, 20; 10", 20"),
dadurch gekennzeichnet, - dass die von den vorderen Enden (12; 22) mit den Lochstempeln (50; 50") weg weisenden Enden (11; 21) der Lochzangenschenkel (10, 20; 10", 20") zur Verbindung mit einer Doppelrollen-Vorschubgabel eines elektrischen Presswerkzeugs (200) ausgebildet sind; - dass die Lochzangenschenkel (10, 20; 10", 20") an den vorderen Enden (12, 22; 12", 22") im Bereich der Gelenkeinheit (30) vordere Anschlagflächen (14) aufweisen, die in der Schließstellung aneinander anliegen, wobei zwischen den vorderen Enden (12; 22) der Lochzangenschenkel (10, 20; 10", 20") und zwischen den Lochstempeln (50; 50") ein Abstand gewahrt bleibt. Trapezoidal perforated pliers (100, 100 '), comprising at least two pliers legs (10, 20, 10 ", 20") arranged in mirror image with one punch (50, 50 ") and one hinge unit (30, 30') for connecting the two pliers legs (10, 20, 10 ", 20"),
characterized, in that the ends (11, 21) of the punch arms (10, 20, 10 ", 20") facing away from the front ends (12, 22) with the punches (50, 50 ") are connected to a double roller feed fork of a electric pressing tool (200) are formed; - That the punch arm legs (10, 20, 10 ", 20") at the front ends (12, 22, 12 ", 22") in the region of the hinge unit (30) front stop surfaces (14) which abut each other in the closed position in that a distance is maintained between the front ends (12, 22) of the punch leg (10, 20, 10 ", 20") and between the punch (50, 50 "). Trapezlochzange (100; 100'; 100") nach Anspruch 1, dadurch gekennzeichnet, dass die Lochzangenschenkel (10, 20; 10", 20") im Bereich der Gelenkeinheit (30) an den hinteren Enden (11, 21; 11 ", 21 ") hintere Anschlagflächen (15) aufweisen, wobei die Lochzangenschenkel (10, 20; 10", 20") in der Öffnungsstellung an den hinteren Anschlagflächen (15) aneinander.Trapezoidal perforating pliers (100, 100 ', 100 ") according to claim 1, characterized in that the hole-pliers legs (10, 20; 10", 20 ") in the region of the hinge unit (30) at the rear ends (11, 21; 21 ") have rear abutment surfaces (15), wherein the piercer legs (10, 20, 10", 20 ") in the open position against the rear abutment surfaces (15) to each other. Trapezlochzange (100; 100'; 100") nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die hinteren Enden (11, 21; 11 ", 21 ") der Lochzangenschenkel (10; 20) jeweils eine von den hinteren Anschlagflächen (15) ausgehende, halbparabelförmige Innenkontur aufweisen.Trapezoidal perforating pliers (100, 100 ', 100 ") according to claim 1 or 2, characterized in that the rear ends (11, 21; 11", 21 ") of the punching pliers limbs (10, 20) each have one of the rear abutment surfaces (15). have outgoing, halbparabelförmige inner contour. Trapezlochzange (100; 100'; 100") nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Gelenkeinheit (30; 30') zwei Lagerbolzen (33; 33') umfasst, die zwischen zwei Gelenkbasisplatten (31) befestigt sind.Trapezoidal perforating pliers (100, 100 ', 100 ") according to one of claims 1 to 3, characterized in that the hinge unit (30, 30') comprises two bearing pins (33, 33 ') fixed between two hinge base plates (31). Trapezlochzange (100; 100'; 100") nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass auf der Mittelachse, zwischen den hinteren Enden (11, 21; 11 ", 21 ") der Trapezlochschenkel (10, 20; 10", 20"), ein Zentrierbolzen (35) angeordnet ist.Trapezoidal perforating pliers (100, 100 ', 100 ") according to one of Claims 1 to 4, characterized in that on the central axis, between the rear ends (11, 21; 11", 21 "), the trapezoidal-plate leg (10, 20; , 20 "), a centering pin (35) is arranged. Trapezlochzange (100; 100'; 100") nach Anspruch 5, dadurch gekennzeichnet, dass der Zentrierstift (35) zwischen den Gelenkbasisplatten (31) angeordnet und mit wenigstens einer der Gelenkbasisplatten (31) verbunden ist.Trapezoidal pliers (100, 100 ', 100 ") according to claim 5, characterized in that the centering pin (35) is disposed between the hinge base plates (31) and connected to at least one of the hinge base plates (31). Trapezlochzange (100') nach einem der Ansprüche 1 bis 6, gekennzeichnet durch eine Arretiereinheit (60'), die mit einer der Gelenkbasisplatten (31) verbunden ist und in der ein verstellbares Tiefenanschlagelement (67') einsetzbar ist.Trapezoidal perforating pliers (100 ') according to one of claims 1 to 6, characterized by a locking unit (60') which is connected to one of the hinge base plates (31) and in which an adjustable depth stop element (67 ') can be inserted. Trapezlochzange (100; 100'; 100") nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Lochstempel (50; 50") mit den vorderen Enden (12, 22; 12", 22") der Trapezlochzangenschenkel (10, 20; 10", 20") lösbar verbunden sind.Trapezoidal perforating pliers (100, 100 ', 100 ") according to one of Claims 1 to 7, characterized in that the perforated punches (50, 50") are connected to the front ends (12, 22; 12 ", 22") of the trapezoidal-toothed pliers limbs (10, 10 "). 20, 10 ", 20") are detachably connected. Trapezlochzange (100; 100'; 100") nach Anspruch 8, dadurch gekennzeichnet, dass der Abstand der Vorderkante der Lochstempel (50; 50") gegenüber den vorderen Enden (12, 22; 12", 22") einstellbar ist.Trapezoidal perforating pliers (100, 100 ', 100 ") according to claim 8, characterized in that the distance of the front edge of the punch (50; 50") from the front ends (12, 22; 12 ", 22") is adjustable. Trapezlochzange (100") nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in wenigstens einem Lochzangenschenkel (10", 20") jeweils wenigstens ein quer zur Längsausdehnung der Lochzangenschenkel (10", 20") verstellbares Einstellelement (17") angeordnet ist, das in den zwischen den Lochzangenschenkeln (10", 20") gebildeten Zwischenraum hineinragt.Trapezoidal perforating pliers (100 ") according to at least one of the preceding claims, characterized in that in each case at least one adjusting element (17") adjustable transversely to the longitudinal extent of the punching pliers limbs (10 ", 20") is arranged in at least one hole pliers limb (10 ", 20") which protrudes into the space formed between the pincer arms (10 ", 20"). Trapezlochzange (100") nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an beiden Lochzangenschenkeln (10", 20") jeweils ein Einstellelement (17") vorgesehen ist und dass die Lochzangenschenkel (10", 20") zwei spiegelbildlich in Bezug auf eine Längsachse angeordnete Aufnahmeausnehmungen (16") für die Einstellelemente (17") aufweisen.Trapezoidal perforating pliers (100 ") according to at least one of the preceding claims, characterized in that an adjusting element (17") is provided on both punching pliers limbs (10 ", 20") and in that the punching pliers limbs (10 ", 20") are two mirror images of one another Have on a longitudinal axis arranged receiving recesses (16 ") for the adjusting elements (17").
EP17180819.9A 2016-07-12 2017-07-11 Pliers for punching holes on trapezoidal profiles Active EP3269509B1 (en)

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DE202016103737.9U DE202016103737U1 (en) 2016-07-12 2016-07-12 Trapezoidal punch

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CN113547018A (en) * 2021-09-01 2021-10-26 桂林福达阿尔芬大型曲轴有限公司 Drilling device for detecting crank arm difference
CN113580825A (en) * 2021-08-02 2021-11-02 南宁市自然资源信息集团有限公司 Marking pliers for forest investigation and using method
WO2023247980A1 (en) * 2022-06-22 2023-12-28 Hajba Tamas Tool for perforating trapezoidal plates

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DE202021105317U1 (en) 2021-10-01 2022-01-11 H3 Tools GmbH & Co. KG Hole punch for trapezoidal punch pliers

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Publication number Priority date Publication date Assignee Title
CN113580825A (en) * 2021-08-02 2021-11-02 南宁市自然资源信息集团有限公司 Marking pliers for forest investigation and using method
CN113580825B (en) * 2021-08-02 2023-06-06 南宁市自然资源信息集团有限公司 Marking pliers for forest investigation and use method
CN113547018A (en) * 2021-09-01 2021-10-26 桂林福达阿尔芬大型曲轴有限公司 Drilling device for detecting crank arm difference
WO2023247980A1 (en) * 2022-06-22 2023-12-28 Hajba Tamas Tool for perforating trapezoidal plates

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DE202016103737U1 (en) 2016-08-18

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