EP0302039B1 - Crimping mandrel - Google Patents

Crimping mandrel Download PDF

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Publication number
EP0302039B1
EP0302039B1 EP19880850259 EP88850259A EP0302039B1 EP 0302039 B1 EP0302039 B1 EP 0302039B1 EP 19880850259 EP19880850259 EP 19880850259 EP 88850259 A EP88850259 A EP 88850259A EP 0302039 B1 EP0302039 B1 EP 0302039B1
Authority
EP
European Patent Office
Prior art keywords
crimping die
die according
plate
crimping
rounded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19880850259
Other languages
German (de)
French (fr)
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EP0302039A3 (en
EP0302039A2 (en
Inventor
Hans Undin
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.)
Weidmueller Interface GmbH and Co KG
Original Assignee
Weidmueller Interface GmbH and Co KG
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Filing date
Publication date
Application filed by Weidmueller Interface GmbH and Co KG filed Critical Weidmueller Interface GmbH and Co KG
Publication of EP0302039A2 publication Critical patent/EP0302039A2/en
Publication of EP0302039A3 publication Critical patent/EP0302039A3/en
Application granted granted Critical
Publication of EP0302039B1 publication Critical patent/EP0302039B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146Clip clamping hand tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/02Jaws
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042Hand tools for crimping

Definitions

  • the invention relates to a press punch of the type specified in the preamble of the appended claim 1.
  • Such press punches are e.g. used in pliers for crimping cable lugs on electrical conductors, and such pliers are e.g. in US-A-4,199,972 or US-A-4,381,661 (Fig. 6,7,9,13).
  • the oblique engaging edges on the individual ribs in both press punches together form a "tunnel" into which the object to be processed can be introduced, the "tunnel” gradually coming together as the two punches approach one another, which takes place when the relevant press arrangement is actuated constricts and effectively compresses the inserted object.
  • the back of the press punch concerned can e.g. have the shape of a flat surface and the support member of the press arrangement (e.g. the jaw support of a cable lug pliers or the like) can be arranged, a press punch designed in this way e.g. hold by means of pressure screws attacking from the side.
  • the support member of the press arrangement e.g. the jaw support of a cable lug pliers or the like
  • the rear side thereof is often designed according to FIG. 2 in US Pat. No. 4,199,972 with a comb projecting in the opposite direction to the ribs on the front side, which is inserted into a corresponding slot in the carrier member and is fixed or pivotable can be recorded in it.
  • press punches of the type mentioned is expensive, because the individual ribs must e.g. be machined from solid material using electroerosive machining.
  • the comb on the back which to a certain extent forms a further rib, but which extends in the opposite direction, increases the volume of the material block required (e.g. steel block) from which to start.
  • the present invention has for its object to provide press punches of the type mentioned, which can be manufactured in a simple, and consequently also cheaper way, and which require less material, in particular in the version with a back-end comb.
  • the object is achieved by means of press punches which have the features contained in the characterizing part of the attached patent claim 1, advantageous further developments being mentioned in the attached subclaims.
  • the jaws 21, 22 in the first embodiment according to FIGS. 2 and 3 consist of a large number of identical (ie also equally thick) plate units or plate elements A and a large number of plate-shaped spacer elements D (FIG. 3).
  • Each plate element A is delimited by a straight rear edge 20 'and by a front edge 20 which is tapered relative to the rear edge 20'.
  • Each spacer element D has in its lower part in Fig. 3 the same shape as a plate element A including a straight rear edge 20 ⁇ , while in the upper part with a roof-shaped edge 24 the shape of two adjacent, oppositely oriented plate units A or their respective front edges 20 copied.
  • a spacer D is shown attached to a plate unit A.
  • the thickness t 'of the spacer elements D is significantly smaller than the thickness t of the plate units A.
  • the purpose of the spacer elements D is to facilitate the penetration of the plate units A of the opposite jaw into the spaces between the plate units A of the own jaw, and the thickness t' can be too for this purpose, for example 0.1-0.3mm.
  • the spacer elements D are not absolutely necessary on the one hand (for example in the case of very precisely machined plate units A) and on the other hand that they also have a different shape (included in the scope shown in FIG. 3) and, finally, that a spacer element can also be arranged on either side of a plate element, as shown in FIG. 2 at a single point on the jaw 22.
  • the jaws 31, 32 already mentioned according to FIGS. 4 and 5 consist partly, namely in each case in their end regions, of plate elements AA which correspond to the plate elements A according to FIGS. 2 and 3 (with the only difference that they have no opening 23) and on the other hand, namely in its central region, of plate elements B which are delimited at the front end by an oblique front edge 20, but instead of the straight rear edge 20 'on the rear side have a broken rear edge 25 which delimits a parallelepipedic extension 30, which is closed by a terminating edge K and forms part of a protruding comb 30A in the assembled jaw 31, 32.
  • the plate elements AA are assigned distance elements DD which correspond to the distance elements D
  • the plate units B are assigned distance elements D 'which differ from the distance elements DD only by the presence distinguish an extension 30 ', which corresponds to the extension 30 in the plate units B.
  • a spacer element D ' is shown separately from a plate element B, with the plate element B by a dashed line 24' the course of the right half of the front edge 24 of an adjacent spacer element D 'in the figure is indicated.
  • openings 30B are arranged, which form a continuous opening for the threaded bolts 11a, 12a (Fig. 1) after the assembly of the jaw 31, 32.
  • the plate units AA, B and the spacer elements DD, D ' are rigidly joined by spot welds at the points Z each jaw 31, 32.
  • the comb 30A serves to insert the relevant jaw into a corresponding gap in the jaw carrier, which in the present case is a rigid assembly. It is obvious that the comb 30A can also extend along the entire length of the jaw, ie in other words that the end regions consisting of the elements AA and DD can be omitted.
  • the jaws 41, 42 according to FIGS. 6 and 7 each consist of two different plate elements E and F which alternate with one another.
  • the plate elements E have an arrow-shaped broken front edge 40 with a tip 40A, and the plate elements F have a V-shaped indentation with a front edge 40A forming a tip 40'A, both front edges 40, 40 'having a congruent shape.
  • the plate elements E are thicker than the plate elements F (approximately to the extent - and for the same purpose - like a plate element A plus a spacer element D thicker are just a plate element A).
  • the tips 40A and 40'A of the closely arranged elements E and F are at exactly the same height and form an uninterrupted, straight edge in the assembled jaw.
  • a plate element is designated as Fa in FIG. 6; it does not differ in any way from the plate elements F. From FIG. 7 it can be seen that the jaws 41, 42 are inserted into their jaw carriers in such a way that, compared to the thicker plate elements E in one jaw, the thinner plate elements F come to rest in the other jaw .
  • the individual plate elements E, F are in this case by means of round rivets 51 ', 51 ⁇ , 52', 52 ⁇ , which pass through openings in the longitudinal direction of the jaws 41 ', 41 ⁇ , 42', 42 ⁇ , firmly joined together. Between the openings 41 ', 41 ⁇ and 42', 42 ⁇ a transverse bore 53, 53 'is arranged for a pin with the help of which the jaws in a manner known per se (for example as in Fig. 1 in US-A-4,199,972 shown) can be pivotally anchored in a jaw carrier.
  • the narrow end parts F 'of the plate elements F together with the equally narrow plate elements E in the assembled jaw 41, 42 form a comb 50A corresponding to the comb 30A in FIG.
  • the angle .alpha. Or .alpha. ' which two engagement edges 20 lying next to one another in a jaw include in the embodiments according to FIGS. 2-5, or the two parts of a broken engagement edge 40, 40' in the embodiment according to FIGS. 6 and 7, is conventionally 90 °. According to the invention, this angle can advantageously be chosen to be somewhat smaller than 90 ° and, for example, have the value of 80 ° or 70 °.
  • FIGS. 8 and 9 show two further embodiments of punch pairs according to the invention of the type described in connection with FIGS. 6 and 7, i.e. with plates of the E type and of the F type.
  • the plates of the E or E ′ type also have a somewhat narrower extension part 130 ′, and furthermore, in the punch 141 shown in the drawing, some (three in FIG. 8) are attached to one ( in Fig. 8 the front) end-to-end plates, regardless of the respective type (E 'or F or F'), at the end edges K '' of their extension parts 130, 130 'towards the other end (in from plate to Plate of decreasing mass) rounded so that the comb 130A formed when all the plates are lined up at the relevant end instead of a sharp corner (such as G 'at the opposite end of the comb) has an amply rounded corner G, both for assembly and also is advantageous for the function.
  • a sharp corner such as G 'at the opposite end of the comb
  • each punch 141, 142 - as in the embodiment according to FIG. 6 - is provided with a transverse bore 153, 153' for a fastening bolt such as 11a, 12a according to FIG. 1.
  • the plates of both types E '', F '' have no run-out parts, i.e. they correspond in principle to the design according to FIG. 2, and are connected to one another by means of a single round rivet 151, but are then permanently connected as a whole to a support block 30B or 30B ', which forms the comb (e.g. in the case of L laser welded).
  • the carrier blocks 30B, 30B ' have the same shape as the comb parts 130A, 130A' in the embodiment according to FIG.
  • Corners M '' and constant height are also provided with the same, and serving the same purpose transverse bores 153, 153 '.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Plates (AREA)
  • Gears, Cams (AREA)
  • Rotary Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Toys (AREA)

Description

Die Erfindung bezieht sich auf eine Press-Stanze der im Oberbegriff des angeschlossenen Patentanspruchs 1 angegebenen Art. Solche Press-Stanzen werden z.B. in Zangen zum Verpressen von Kabelschuhen an elektrischen Leitern angewandt, und eine derartige Zange ist z.B. in US-A-4,199,972 oder US-A-4,381,661 (Fig. 6,7,9,13) dargestellt. Die schrägen Eingriffskanten an den einzelnen Rippen bei beiden Press-Stanzen bilden zusammen einen "Tunnel" in den der zu bearbeitende Gegenstand eingeführt werden kann, wobei sich der "Tunnel" beim Annähern der beiden Stanzen aneinander, was beim Betätigen der betreffenden Pressanordnung stattfindet, allmählich einengt und dadurch den eingelegten Gegenstand wirksam verpresst.The invention relates to a press punch of the type specified in the preamble of the appended claim 1. Such press punches are e.g. used in pliers for crimping cable lugs on electrical conductors, and such pliers are e.g. in US-A-4,199,972 or US-A-4,381,661 (Fig. 6,7,9,13). The oblique engaging edges on the individual ribs in both press punches together form a "tunnel" into which the object to be processed can be introduced, the "tunnel" gradually coming together as the two punches approach one another, which takes place when the relevant press arrangement is actuated constricts and effectively compresses the inserted object.

Im Prinzip kan die Rückseite der betreffenden Press-Stanze z.B. die Form einer ebenen Fläche aufweisen und das Trägerorgan der Pressanordnung (z.B. der Backenträger einer Kabelschuhzange od. dgl.) kann angeordnet sein, eine derart gestaltete Press-Stanze z.B. mittels von der Seite angreifenden Druckschrauben festzuhalten.In principle, the back of the press punch concerned can e.g. have the shape of a flat surface and the support member of the press arrangement (e.g. the jaw support of a cable lug pliers or the like) can be arranged, a press punch designed in this way e.g. hold by means of pressure screws attacking from the side.

U.a. zwecks leichtem Austausches der Press-Stanzen wird jedoch deren Rückseite oft gemäss Fig. 2 in US-A-4,199,972 mit einem in entgegengesetzter Richtung zu den Rippen an der Vorderseite vorstehenden Kamm gestaltet, der in einen entsprechenden Schlitz im Trägerorgan eingeführt und fest oder schwenkbar darin festgehalten werden kann.However, inter alia for the purpose of easy replacement of the press punches, the rear side thereof is often designed according to FIG. 2 in US Pat. No. 4,199,972 with a comb projecting in the opposite direction to the ribs on the front side, which is inserted into a corresponding slot in the carrier member and is fixed or pivotable can be recorded in it.

Die Herstellung von Press-Stanzen der angeführten Art ist kostspielig, denn die einzelnen Rippen müssen z.B. mittels elektroerosiver Bearbeitung aus vollem Material herausgearbeitet werden. Der Kamm auf der Rückseite, der gewissermassen eine weitere, jedoch in entgegengesetzter Richtung sich erstreckende Rippe bildet, vergrössert das Volumen des benötigten Materialblockes (z.B. Stahlklotzes) von dem ausgegangen werden muss.The production of press punches of the type mentioned is expensive, because the individual ribs must e.g. be machined from solid material using electroerosive machining. The comb on the back, which to a certain extent forms a further rib, but which extends in the opposite direction, increases the volume of the material block required (e.g. steel block) from which to start.

Die vorliegende Erfindung stellt sich die Aufgabe, Press-Stanzen der angeführten Art zu schaffen, die auf einfache, und in Folge dessen auch billigere Weise hergestellt werden können und die, insbesondere in der Ausführung mit einem rückwertigen Kamm, weniger Material erfordern. Die Aufgabe wird mittels Press-Stanzen gelöst, welche die im kennzeichnenden Teil des angeschlossenen Patentanspruchs 1 enthaltenen Merkmale aufweisen, wobei in den angeschlossenen Unteransprüchen vorteilhalfte Weiterentwicklungen angeführt sind.The present invention has for its object to provide press punches of the type mentioned, which can be manufactured in a simple, and consequently also cheaper way, and which require less material, in particular in the version with a back-end comb. The object is achieved by means of press punches which have the features contained in the characterizing part of the attached patent claim 1, advantageous further developments being mentioned in the attached subclaims.

Die Erfindung soll nun an Hand beigefügter schematischer Zeichnungen näher erläutert werden. Hierbei zeigt

Fig. 1
eine Seitenansicht einer Zange mit den erfindungsgemässen Press-Stanzen;
Fig. 2
eine Perspektivansicht einer ersten Ausführungsform der erfindungsgemässen Press-Stanzen;
Fig. 3
eine Vorderansicht der Teile aus denen die Press-Stanzen gemäss Fig. 2 hergestellt sind;
Fig. 4
eine Perspektivansicht einer zweiten Ausführungsform der erfindungsgemässen Press-Stanzen;
Fig. 5
eine Vorderansicht der Teile aus denen der mittlere Teil der Press-Stanzen gemäss Fig. 4 hergestellt ist;
Fig. 6
eine Seitenansicht einer dritten Ausführungsform der erfindungsgemässen Press-Stanzen in teilweise ineinander geschobenem Zustand,
Fig. 7
eine Vorderansicht der Press-Stanzen gemäss Fig. 6, und
Fig. 8 und 9
sind zwei Perspektivansichten einer vierten und einer fünften Ausführungsform eines erfindungsgemässen Stanzenpaares.
The invention will now be explained in more detail with reference to the attached schematic drawings. Here shows
Fig. 1
a side view of pliers with the press punches according to the invention;
Fig. 2
a perspective view of a first embodiment of the press punches according to the invention;
Fig. 3
a front view of the parts from which the press punches are made according to FIG. 2;
Fig. 4
a perspective view of a second embodiment of the press punches according to the invention;
Fig. 5
a front view of the parts from which the middle part of the press punches according to Fig. 4 is made;
Fig. 6
2 shows a side view of a third embodiment of the press punches according to the invention in a partially pushed-together state,
Fig. 7
a front view of the press punches according to FIG. 6, and
8 and 9
are two perspective views of a fourth and a fifth embodiment of a pair of punches according to the invention.

Eine Zange 10 gemäss Fig. 1 weist in an sich bekannter Weise zwei Backenträger 11, 12 und zwei Handgriffe 111, 112 auf. In den Backenträgern 11, 12 ist mit Hilfe von Gewindebolzen 11a, 12a je eine Backe 31, 32 gemäss Fig. 4 starr angeordnet. Beim Betätigen des Handgriffes 21 im Sinne des Pfeiles P₁ bewegt sich der Backenträger 11 im Sinne des Pfeiles P₂ und hierbei trängen die Rippen an einer der Backen 31, 32 in die Zwischenräume zwischen den Rippen an der anderen Backe hinein.1 in a manner known per se has two jaw carriers 11, 12 and two handles 111, 112. One jaw 31, 32 according to FIG. 4 is rigidly arranged in the jaw carriers 11, 12 with the aid of threaded bolts 11a, 12a. When the handle 21 is actuated in the direction of the arrow P 1, the jaw support 11 moves in the direction of the arrow P 2 and the ribs on one of the jaws 31, 32 penetrate into the spaces between the ribs on the other jaw.

Die Backen 21, 22 in der ersten Ausführungsform gemäss Fig. 2 und 3 bestehen aus einer Vielzahl identischer (d.h. auch gleich dicker) Platteneinheiten oder Plattenelemente A und einer Vielzahl plattenförmiger Distanzelemente D (Fig. 3). Jedes Plattenelement A ist von einer geraden Hinterkante 20′ und von einer gegenüber der Hinterkante 20′ abgeschrägten Vorderkante 20 begrenzt. Jedes Distanzelement D hat in seinem in Fig. 3 unteren Teil die gleiche Form wie ein Plattenelement A einschliesslich einer geraden Hinterkante 20˝, während es im oberen Teil mit einer dachkantförmigen Kante 24 die Form zweier benachbarten, entgegengesetzt orientierten Platteneinheiten A bzw. deren jeweiliger Vorderkanten 20 kopiert. In Fig. 3 ist ein Distanzelement D an einer Platteneinheit A angelegt dargestellt. Die Dicke t′ der Distanzelemente D ist bedeutend kleiner als die Dicke t der Platteneinheiten A. Zweck der Distanzelemente D ist das Eindringen der Platteneinheiten A der entgegengelegenen Backe in die Zwischenräume der Platteneinheiten A der eigenen Backe zu erleichtern, und die Dicke t′ kann zu diesem Zweck z.B. 0,1-0,3mm betragen.The jaws 21, 22 in the first embodiment according to FIGS. 2 and 3 consist of a large number of identical (ie also equally thick) plate units or plate elements A and a large number of plate-shaped spacer elements D (FIG. 3). Each plate element A is delimited by a straight rear edge 20 'and by a front edge 20 which is tapered relative to the rear edge 20'. Each spacer element D has in its lower part in Fig. 3 the same shape as a plate element A including a straight rear edge 20˝, while in the upper part with a roof-shaped edge 24 the shape of two adjacent, oppositely oriented plate units A or their respective front edges 20 copied. In Fig. 3, a spacer D is shown attached to a plate unit A. The thickness t 'of the spacer elements D is significantly smaller than the thickness t of the plate units A. The purpose of the spacer elements D is to facilitate the penetration of the plate units A of the opposite jaw into the spaces between the plate units A of the own jaw, and the thickness t' can be too for this purpose, for example 0.1-0.3mm.

Es ist einzusehen, dass die Distanzelemente D einerseits nicht absolut erforderlich sind (z.B. bei sehr genau bearbeiteten Platteneinheiten A), und anderseits, dass sie auch eine andere (in deren in Fig. 3 dargestelltem Umfang enthaltene) Form aufweisen können, und schliesslich, dass auch je ein Distanzelement beiderseits eines Plattenelementes angeordnet werden kann, wie in Fig. 2 an einer einzigen Stelle bei der Backe 22 dargestellt ist.It can be seen that the spacer elements D are not absolutely necessary on the one hand (for example in the case of very precisely machined plate units A) and on the other hand that they also have a different shape (included in the scope shown in FIG. 3) and, finally, that a spacer element can also be arranged on either side of a plate element, as shown in FIG. 2 at a single point on the jaw 22.

Mittels eines unrunden Zapfenorgans 23, das durch entsprechend gestaltete Öffnungen 23' in allen Plattenelementen A und allen Distanzelementen D hindurchgeht, werden diese Elemente zu je einer Backe 21, 22 starr zusammengefasst. Nach Aneinanderreihung aller Plattenelemente A und Distanzelemente D so, dass in jeder Backe bei benachbarten Plattenelementen A die abgeschrägten vorderen Kanten 20 in entgegengesetzter Richtung verlaufen, bilden die hinteren Kanten 20' und 20'' in jeder Backe eine einheitliche, ebene Hinterfläche 200 der ganzen Backe, die z.B. gegen eine ebene Anlagefläche in einer entsprechenden Ausnehmung in einem Trägerorgan (Backenträger) anliegen kann.By means of an out-of-round pin member 23 which passes through appropriately designed openings 23 'in all plate elements A and all spacer elements D, these elements are rigidly combined to form a jaw 21, 22. After lining up all the plate elements A and spacer elements D such that the bevelled front edges 20 run in the opposite direction in each jaw in the case of adjacent plate elements A, the rear edges 20 'and 20' 'form a uniform, flat rear surface 200 of the entire jaw in each jaw which, for example can rest against a flat contact surface in a corresponding recess in a support member (jaw support).

Die bereits erwähnten Backen 31, 32 gemäss Fig. 4 und 5 bestehen zum Teil, nämlich jeweils in ihren Endbereichen, aus Plattenelementen AA die den Plattenelementen A gemäss Fig. 2 und 3 entsprechen (mit dem einzigen Unterschied, dass sie keine Öffnung 23 aufweisen) und zum anderen Teil, nämlich in ihrem mittleren Bereich, aus Plattenelementen B die zwar am vorderen Ende von einer schrägen Vorderkante 20 begrenzt sind, an der Hinterseite aber anstatt der geraden Hinterkante 20' eine gebrochene Hinterkante 25 aufweisen, die einen parallelepipedischen Ausläufer 30 begrenzt, der von einer Abschlusskante K abgeschlossen ist und einen Teil eines herausragenden Kammes 30A bei der zusammengesetzten Backe 31, 32 bildet. Den Plattenelementen AA sind Distanzelemente DD, die den Distanzelementen D entsprechen, zugeordnet, und den Plattenetnheiten B sind Distanzelemente D' zugeordnet, die sich von den Distanzelementen DD nur durch das Vorhandensein eines Ausläufers 30′ unterscheiden, der dem Ausläufer 30 bei den Platteneinheiten B entspricht. In Fig. 5 ist ein Distanzelement D′ gesondert von einem Plattenelement B dargestellt, wobei beim Plattenelement B durch eine gestrichelte Linje 24′ der Verlauf der in der Abbildung rechten Hälfte der Vorderkante 24 eines anliegenden Distanzelementes D′ angedeutet ist. In den Ausläufern 30 und 30′ sind runde Öffnungen 30B angeordnet, die nach dem Zusammensetzen der Backe 31, 32 eine durchgehende Öffnung für die Gewindebolzen 11a, 12a (Fig. 1) bilden. Die Platteneinheiten AA, B und die Distanzelemente DD, D′ sind durch Punktschweissungen an den Stellen Z jeweils Backe 31, 32 starr zusammengefügt. Der Kamm 30A dient, wie bereits in der Einleitung erwähnt, zum Einsetzen der betreffenden Backe in einen entsprechenden Spalt im Backenträger, wobei es sich im vorliegenden Fall um eine starre Montage handelt. Es ist offensichtlich, dass sich der Kamm 30A auch entlang der ganzen Länge der Backe erstrecken kann, d.h. mit anderen Worten, dass die aus den Elementen AA und DD bestehenden Endbereiche entfallen können.The jaws 31, 32 already mentioned according to FIGS. 4 and 5 consist partly, namely in each case in their end regions, of plate elements AA which correspond to the plate elements A according to FIGS. 2 and 3 (with the only difference that they have no opening 23) and on the other hand, namely in its central region, of plate elements B which are delimited at the front end by an oblique front edge 20, but instead of the straight rear edge 20 'on the rear side have a broken rear edge 25 which delimits a parallelepipedic extension 30, which is closed by a terminating edge K and forms part of a protruding comb 30A in the assembled jaw 31, 32. The plate elements AA are assigned distance elements DD which correspond to the distance elements D, and the plate units B are assigned distance elements D 'which differ from the distance elements DD only by the presence distinguish an extension 30 ', which corresponds to the extension 30 in the plate units B. In Fig. 5, a spacer element D 'is shown separately from a plate element B, with the plate element B by a dashed line 24' the course of the right half of the front edge 24 of an adjacent spacer element D 'in the figure is indicated. In the foothills 30 and 30 'round openings 30B are arranged, which form a continuous opening for the threaded bolts 11a, 12a (Fig. 1) after the assembly of the jaw 31, 32. The plate units AA, B and the spacer elements DD, D 'are rigidly joined by spot welds at the points Z each jaw 31, 32. As already mentioned in the introduction, the comb 30A serves to insert the relevant jaw into a corresponding gap in the jaw carrier, which in the present case is a rigid assembly. It is obvious that the comb 30A can also extend along the entire length of the jaw, ie in other words that the end regions consisting of the elements AA and DD can be omitted.

Die Backen 41, 42 gemäss Fig. 6 und 7 bestehen jeweils aus zwei verschiedenen Plattenelementen E und F, die miteinander alternieren.The jaws 41, 42 according to FIGS. 6 and 7 each consist of two different plate elements E and F which alternate with one another.

Die Plattenelemente E haben eine pfeilförmig gebrochene vordere Kante 40 mit einer Spitze 40A, und die Plattenelemente F haben eine eine V-förmige Einbuchtung mit einer eine Spitze 40′A bildende vordere Kante 40A, wobei beide Vorderkanten 40, 40′ kongruente Form aufweisen. Jeweils gegenüber einem Plattenelement E in der einen Backe liegt ein Plattenelement F in der anderen Backe, und die Plattenelemente E sind hierbei dicker als die Plattenelemente F (etwa in dem Ausmass - und zu dem gleichen Zweck - wie ein Plattenelement A plus ein Distanzelement D dicker sind als bloss ein Plattenelement A).The plate elements E have an arrow-shaped broken front edge 40 with a tip 40A, and the plate elements F have a V-shaped indentation with a front edge 40A forming a tip 40'A, both front edges 40, 40 'having a congruent shape. In each case, opposite a plate element E in one jaw, there is a plate element F in the other jaw, and the plate elements E are thicker than the plate elements F (approximately to the extent - and for the same purpose - like a plate element A plus a spacer element D thicker are just a plate element A).

Die Spitzen 40A und 40′A der dicht aneinandergereihten Elemente E und F liegen genau in gleicher Höhe und bilden in der zusammengesetzten Backe eine ununterbrochene, gerade Kante. Nur übersichtlichkeitshalber mit Hinsicht auf Fig. 7 ist in Fig. 6 ein Plattenelement als Fa bezeichnet; es unterscheidet sich keineswegs von den Plattenelementen F. Aus Fig. 7 ist ersichtlich, dass die Backen 41, 42 derart in ihre Backenträger eingesetzt werden, dass gegenüber den dickeren Plattenelementen E in der einen Backe die dünneren Plattenelemente F in der anderen Backe zu liegen kommen. Die einzelnen Plattenelemente E, F sind in diesem Fall mittels Rundnieten 51′, 51˝, 52′, 52˝, die durch in Längsrichtung der Backen verlaufende Öffnungen 41′, 41˝, 42′, 42˝ hindurchgehen,fest zusammengefügt. Zwischen den Öffnungen 41′, 41˝ und 42′, 42˝ ist je eine querverlaufende Bohrung 53, 53′ angeordnet für einen Zapfen mit dessen Hilfe die Backen in an sich bekannter Weise (z.B. wie in Fig. 1 in US-A-4,199,972 dargestellt) schwenkbar in einem Backenträger verankert werden können. Die schmälaren Endteile F′ der Plattenelemente F bilden zusammen mit den gleich schmalen Plattenelementen E in der zusammengesetzten Backe 41, 42 einen dem Kamm 30A in Fig. 4 entsprechenden Kamm 50A.The tips 40A and 40'A of the closely arranged elements E and F are at exactly the same height and form an uninterrupted, straight edge in the assembled jaw. Just for the sake of clarity with respect to FIG. 7, a plate element is designated as Fa in FIG. 6; it does not differ in any way from the plate elements F. From FIG. 7 it can be seen that the jaws 41, 42 are inserted into their jaw carriers in such a way that, compared to the thicker plate elements E in one jaw, the thinner plate elements F come to rest in the other jaw . The individual plate elements E, F are in this case by means of round rivets 51 ', 51˝, 52', 52˝, which pass through openings in the longitudinal direction of the jaws 41 ', 41˝, 42', 42˝, firmly joined together. Between the openings 41 ', 41˝ and 42', 42˝ a transverse bore 53, 53 'is arranged for a pin with the help of which the jaws in a manner known per se (for example as in Fig. 1 in US-A-4,199,972 shown) can be pivotally anchored in a jaw carrier. The narrow end parts F 'of the plate elements F together with the equally narrow plate elements E in the assembled jaw 41, 42 form a comb 50A corresponding to the comb 30A in FIG.

Der Winkel α bzw. α′, welchen zwei in einer Backe nebeneinander liegende Eingriffskanten 20 in den Ausführungsformen gemäss Fig. 2-5, oder die beiden Teile einer gebrochenen Eingriffskante 40, 40′ in der Ausführungsform gemäss Fig. 6 und 7 miteinander einschliessen, beträgt herkömmlicherweise 90°. Erfingungsgemäss kann dieser Winkel mit Vorteil etwas kleiner als 90° gewählt werden und z.B. den Wert von 80° oder 70° aufweisen. Es hat sich nämlich in der Praxis herausgestellt, dass ein Kabelschuh, der mit Backen des hier vorliegenden Typs verpresst wird, bei denen alle Winkel zwischen den einzelnen Eingriffsflächen oder -kanten gleich 90° sind, nach Verlassen der Zange von dem erwünschten quadratischen Querschnitt zu einen rhombischen Querschnitt übergeht, bei dem in den beiden an der in Verpressungsrichtung liegenden Diagonale gelegenen Ecken der eingeschlossene Winkel grösser als 90° ist, und der in den beiden an der quer zur Verpressungsrichtung verlaufenden Diagonale gelegenen Ecken eingeschlossene Winkel kleiner als 90° ist. Indem man diesem Umstand durch die oben erwähnte Massnahme im vorhinein Rechnung trägt, erhält man als Endresultat einen Querschnitt, der sehr nahe der erwünschten quadratischen Form liegt.The angle .alpha. Or .alpha. ', Which two engagement edges 20 lying next to one another in a jaw include in the embodiments according to FIGS. 2-5, or the two parts of a broken engagement edge 40, 40' in the embodiment according to FIGS. 6 and 7, is conventionally 90 °. According to the invention, this angle can advantageously be chosen to be somewhat smaller than 90 ° and, for example, have the value of 80 ° or 70 °. It has been found in practice that a cable lug, which is pressed with jaws of the type here, in which all angles between the individual engagement surfaces or edges are equal to 90 °, after leaving the pliers changes from the desired square cross-section to a rhombic cross-section, in which the included angle is greater than 90 ° in the two corners located on the diagonal in the pressing direction, and in the two included angles at the corners located transversely to the pressing direction is less than 90 °. By taking this circumstance into account in advance by the measure mentioned above, the end result is a cross section which is very close to the desired square shape.

In den Fig. 8 und 9 sind zwei weitere Ausführungsformen erfindungsgemässer Stanzenpaare von der im Zusammenhang mit Fig. 6 und 7 beschriebenen Art, d.h. mit Platten vom E-Typ und vom F-Typ, dargestellt.8 and 9 show two further embodiments of punch pairs according to the invention of the type described in connection with FIGS. 6 and 7, i.e. with plates of the E type and of the F type.

Bei der Ausführungsform gemäss Fig. 8 weisen auch die Platten vom E bzw. E'-Typ einen etwas schmäleren Ausläuferteil 130' auf, und ferner sind bei der in der Zeichnung oberen Stanze 141 einige (drei in Fig. 8) der an einem (in Fig. 8 dem vorderen) Ende aneinander gereihten Platten, ungeachtet des jeweiligen Typs (E' oder F bzw. F'), an den Abschlusskanten K'' ihrer Ausläuferteile 130, 130' in Richtung zur andren Ende hin (in von Platte zu Platte abnehmendem Masse) abgerundet, so dass der bei der Aneinanderreihung aller Platten entstandene Kamm 130A an dem betreffenden Ende anstelle einer scharfen Ecke (wie G' am entgegengesetzten Ende des Kammes) eine reichlich abgerundete Ecke G aufweist, was sowohl für die Montage, als auch für die Funktion vorteilhaft ist. (Unter "Abrundung an der Abschlusskante" wird hierbei eine Abrundung in Richtung winkelrecht zur Ebene der betreffenden Platte verstanden)
   Die übrigen Platten E', F' weisen ansteigend höhere (und mit einer etwas schräg verlaufenden Abschlusskante K'' abgeschlossene) Ausläuferteile 130 auf, so dass ein Kamm 130A entsteht, der von der abgerundeten Ecke G in einer geraden Linie zügig zu der scharfen Ecke G' ansteigt, d.h. eine allmählich wachsende Höhe H aufweist.
In the embodiment according to FIG. 8, the plates of the E or E ′ type also have a somewhat narrower extension part 130 ′, and furthermore, in the punch 141 shown in the drawing, some (three in FIG. 8) are attached to one ( in Fig. 8 the front) end-to-end plates, regardless of the respective type (E 'or F or F'), at the end edges K '' of their extension parts 130, 130 'towards the other end (in from plate to Plate of decreasing mass) rounded so that the comb 130A formed when all the plates are lined up at the relevant end instead of a sharp corner (such as G 'at the opposite end of the comb) has an amply rounded corner G, both for assembly and also is advantageous for the function. ("Rounding at the end edge" is understood to mean a rounding in the direction perpendicular to the plane of the plate in question)
The remaining plates E ', F' have increasing higher (and closed with a somewhat oblique end edge K '') extension parts 130, so that a comb 130A is formed, which goes from the rounded corner G in a straight line quickly to the sharp corner G 'increases, ie has a gradually increasing height H.

Die einzelnen Platten E', F' sind hierbei mittels zweier parallel und im Abstand von einander verlaufender Rundnieten 151', 151'' bzw. 152', 152'' verbunden und im Bereich zwischen den jeweiligen Nietpaaren 151', 151'' bzw. 152', 152'' ist jede Stanze 141 , 142 - wie bei der Ausführungsform gemäss Fig. 6 - mit einer querverlaufenden Bohrung 153, 153' für einen Befestigungsbolzen wie 11a, 12a gemäss Fig. 1 versehen.The individual plates E ', F' are connected here by means of two round rivets 151 ', 151' 'or 152', 152 '' running parallel and at a distance from each other and in the area between the respective rivet pairs 151 ', 151' 'or 152 ', 152' ', each punch 141, 142 - as in the embodiment according to FIG. 6 - is provided with a transverse bore 153, 153' for a fastening bolt such as 11a, 12a according to FIG. 1.

Bei der in Fig. 8 unteren Stanze 142 weist bloss die äusserste Platte, hier jedoch an beiden Enden, einen an der Abschlusskante abgerundeten Ausläuferteil 130' auf, und alle dazwischen liegenden Platten haben gleich hohe Ausläuferteile 130, 130', so dass ein Kamm 130A' in im wesentlichen gleicher Form wie in Fig. 4, aber mit an beiden Enden schwach abgerundeten Ecken G'', entsteht.In the case of the lower punch 142 in FIG. 8, only the outermost plate, but here at both ends, has an extension part 130 'rounded at the end edge, and all the plates in between have extension parts 130, 130' of the same height, so that a comb 130A 'in essentially the same form as in Fig. 4, but with slightly rounded corners G' 'at both ends.

Bei der Ausführungsform gemäss Fig. 9 weisen bei den Stanzen 141', 142' die Platten beider Typen E'', F'' keine Ausläuferteile auf, d.h. sie entsprechen im Prinzip der Bauart gemäss Fig. 2, und sind mittels eines einzigen Rundnietes 151 miteinander verbunden, dann aber jeweils als ein Ganzes an einen Trägerblock 30B bzw. 30B', der den Kamm bildet, fest angeschlossen (z. B. bei L lasergeschweisst). Die Trägerblöcke 30B, 30B' weisen die gleiche Form wie die Kammteile 130A, 130A' bei der Ausführungsform gemäss Fig. 8 auf, mit einer reichlich abgerundeten Ecke M und einer zu einer scharfen Ecke M' ansteigenden Höhe H', bzw. mit zwei abgerundeten Ecken M'' und unveränderlicher Höhe. Sie sind auch mit den gleichen, und dem gleichen Zweck dienenden Querborhrungen 153, 153' versehen.In the embodiment according to FIG. 9, in the punches 141 ', 142' the plates of both types E '', F '' have no run-out parts, i.e. they correspond in principle to the design according to FIG. 2, and are connected to one another by means of a single round rivet 151, but are then permanently connected as a whole to a support block 30B or 30B ', which forms the comb (e.g. in the case of L laser welded). The carrier blocks 30B, 30B 'have the same shape as the comb parts 130A, 130A' in the embodiment according to FIG. 8, with a sufficiently rounded corner M and a height H 'increasing to a sharp corner M', or with two rounded corners Corners M '' and constant height. They are also provided with the same, and serving the same purpose transverse bores 153, 153 '.

Claims (18)

  1. Crimping mandrel or die (21, 22, 31, 32, 41, 42) having a front side, provided with a plurality of spaced apart parallel projecting webs (A, AA, B) which can be introduced into the interstices between the webs of a co-operating crimping die of the same kind, and with a rear side (200), suitable for mounting of the crimping die in a carrier means (11, 12) of a crimping device (10), each crimping die being on the webs provided with engagement edges (20, 40') inclined in opposite directions, characterized in that each web is formed by an independent plate-shaped unit (A, AA, B) limited at one end by a terminal edge (20', 25) which forms a part of the said rear face (200), and at the opposite end by a terminal edge (20') which forms the said engagement edge and extends obliquely relative to the first mentioned terminal edge, all plate-shaped units being rigidly interconnected.
  2. Crimping die according to claim 1, characterized in that the plate units are spaced from each other by a distance greater than their thickness.
  3. Crimping die according to claim 2, characterized in that all plate units have the same thickness (t), and a spacer element (D) of a considerably smaller thickness (t') is attached to every second plate unit.
  4. Crimping die according to any one of the preceding claims, characterized in that at least some of the plate units (B), and possibly also of the spacer elements (D'), are on the side opposite the engagement edge provided with central projection (30, 30') which ends with a terminal edge (K) and which, together with the corresponding projections of the other units or elements, forms a ridge (30A) in the assembled die.
  5. Crimping die according to claim 4, characterized in that an opening (30B, 53, 53') is provided in the ridge (30A, 50A) for a bolt means (11a, 12a), with the aid of which the crimping die can be fixed in a carrier means (11, 12).
  6. Crimping die according to any one of the preceding claims, characterized in that it is alternately formed by plate units (E, F) with front edges having a V-shaped recess, and front edges which form a congruent V-shaped point and are thicker than the first mentioned units.
  7. Crimping die according to any one of the preceding claims, characterized in that two adjacent engagement edges in a die subtend an angle (α, α') which up to the extent of the order of 20° is smaller than 90°.
  8. Crimping die according to claim 3, characterized in that the spacer elements (D) have a shape which is congruent with both adjacent plate units.
  9. Crimping die according to any one of the preceding claims, characterized in that the individual parts of a die are interconnected by at least one rivet or bolt (23, 33).
  10. Crimping die according to any one of the preceding claims 1 to 8, characterized in that the individual parts of a die are interconnected by welding (Z).
  11. Crimping die according to claim 4 or 5, characterized in that at least one outermost plate unit is provided with a projection (130, 130') which is rounded- off at its terminal edge (K''), so that a ridge (130A, 130A') with at least one rounded-off corner (G, G') is obtained.
  12. Crimping die according to claim 11, characterized in that a plurality of plate units is at one end, and no plate unit is at the other end, provided with a projection having a rounded-off terminal edge, so that a ridge (130A) with one extensively rounded-off corner (G) and one sharp corner (G') is obtained.
  13. Crimping die according to claim 11 or 12, characterized in that the plate units adjoining the plate units with a projection having a rounded-off terminal edge (K') are provided with a slanting terminal edge (K'') and have a height which increases from one unit to another, so that a ridge (130A) with gradually increasing height is obtained.
  14. Crimping die according to any one of claims 1 to 3 or 6 to 10, characterized in that the plate units are at their terminal edges firmly attached, e.g. welded, to a common carrier block (30B, 30B') which forms a ridge.
  15. Crimping die according to claim 14, characterized in that carrier block (30B, 30B') is at least on one its corner (G, G") rounded-off.
  16. Crimping die according to claim 14 or 15, characterized in that the carrier block (30B) has a height (H') which from a rounded-off corner (G)increases in the direction toward the other corner (G').
  17. Crimping die according to claim 15 or 16, characterized in that the carrier block (30B) has at one its end an extensively rounded-off corner (G) and at the opposite end a sharp corner (G').
  18. Crimping die according to any one of claims 14 to 17, characterized in that a transverse hole (153', 153'') for an affixing bolt is provided in the carrier block (30B, 30B').
EP19880850259 1987-07-29 1988-07-27 Crimping mandrel Expired - Lifetime EP0302039B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8702990 1987-07-29
SE8702990A SE8702990D0 (en) 1987-07-29 1987-07-29 PRESS PADS

Publications (3)

Publication Number Publication Date
EP0302039A2 EP0302039A2 (en) 1989-02-01
EP0302039A3 EP0302039A3 (en) 1990-03-28
EP0302039B1 true EP0302039B1 (en) 1993-07-14

Family

ID=20369193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880850259 Expired - Lifetime EP0302039B1 (en) 1987-07-29 1988-07-27 Crimping mandrel

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EP (1) EP0302039B1 (en)
DE (1) DE3882294D1 (en)
ES (1) ES2042803T3 (en)
SE (1) SE8702990D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698026B1 (en) * 1992-11-19 1994-12-30 Dubuis Set of two dies intended to equip a press for shrinking and / or crimping.
ES2138006T3 (en) * 1993-04-26 2000-01-01 Bosch Gmbh Robert TUBE, TUBE JOINT AND PROCEDURE FOR THE MANUFACTURE OF TUBES FOR TUBE JOINTS, AS WELL AS A DEVICE FOR TUBE HOLDING.
DE19520928C2 (en) * 1995-06-08 2003-05-15 Bernhard Schaefer Werkzeug Und Device for connecting a wire to a contact element
FR2886874B1 (en) * 2005-06-10 2008-09-12 Dubuis Et Cie Sa M TWO MATRIX SETS TO EQUIP A PRESS TO RETURN AND / OR CRIMP
DE102018121971A1 (en) * 2018-09-10 2020-03-12 Gustav Klauke Gmbh Press tool

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692422A (en) * 1948-03-10 1954-10-26 Aircraft Marine Prod Inc Method of applying connectors
US3818573A (en) * 1973-05-30 1974-06-25 A Scotto Implement for affixing metal pick to flower stem
US4199972A (en) * 1976-01-08 1980-04-29 Pressmaster A.B. Gripping or pressing appliance

Also Published As

Publication number Publication date
ES2042803T3 (en) 1993-12-16
DE3882294D1 (en) 1993-08-19
EP0302039A3 (en) 1990-03-28
SE8702990D0 (en) 1987-07-29
EP0302039A2 (en) 1989-02-01

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