EP3904007B1 - Crimpzangen-gesenk und crimpzange - Google Patents

Crimpzangen-gesenk und crimpzange Download PDF

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Publication number
EP3904007B1
EP3904007B1 EP21170759.1A EP21170759A EP3904007B1 EP 3904007 B1 EP3904007 B1 EP 3904007B1 EP 21170759 A EP21170759 A EP 21170759A EP 3904007 B1 EP3904007 B1 EP 3904007B1
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EP
European Patent Office
Prior art keywords
die
stop body
die half
bearing
crimping
Prior art date
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Active
Application number
EP21170759.1A
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German (de)
English (en)
French (fr)
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EP3904007C0 (de
EP3904007A1 (de
Inventor
Thomas Glockseisen
Roman Zinser
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.)
Wezag GmbH and Co KG
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Wezag GmbH and Co KG
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Publication date
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Publication of EP3904007A1 publication Critical patent/EP3904007A1/de
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Publication of EP3904007C0 publication Critical patent/EP3904007C0/de
Publication of EP3904007B1 publication Critical patent/EP3904007B1/de
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Anticipated expiration legal-status Critical

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus 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
    • H01R43/042—Hand tools for crimping

Definitions

  • the present invention relates to a crimping tool die intended for use in a crimping tool.
  • the crimping tool die has two die half units, the crimping surfaces of which delimit a die receptacle into which a workpiece can be inserted, which is then to be crimped between the crimping surfaces of the die half units.
  • the crimping tool die is used to crimp a workpiece that is a ferrule (with or without an insulating collar) with a cable placed inside.
  • the invention relates to crimping pliers with such a crimping pliers die.
  • the pamphlet EP 0 516 598 B1 discloses a crimping tool die having two die half assemblies.
  • the die half units are each mounted on the pliers jaws via pivot bolts in bearing eyes of the pliers jaws such that they can pivot about a pivot axis arranged vertically to a pivot plane of the pliers jaws.
  • the die half units each have a guide rod on one side of a die and a guide recess designed as a guide bore on the other side of the die half.
  • the guide rod of one die half unit is then slidably guided in the associated guide bore of the other die half unit in the direction of the crimping axis, thus forming an anti-twist device via which the two die half units are guided relative to one another over the crimping stroke.
  • the two die-half units In a relative position of the two die-half units that is predetermined by the anti-twist device, the two die-half units can rotate together about an axis of rotation that runs coaxially with the crimping axis.
  • the longitudinal axis of the die receptacle delimited by the two die halves can then be aligned in one first rotational position, in which the die receptacle is oriented in the longitudinal direction of the crimping pliers and runs in the pivoting plane of the pliers jaws, and into a second rotational position, in which the die receptacle is oriented vertically to the pivoting plane of the pliers jaws. While in the first rotary position a workpiece can be inserted frontally into the crimping tool and into the die receptacle of the same, lateral insertion of the workpiece into the die receptacle is possible in the second rotary position.
  • the WO 2019/105703 A1 shows a crimping tool die according to the preamble of claim 1.
  • the invention proposes a crimping tool die with two die halves.
  • the two die half units are guided relative to one another over the crimping stroke by means of a guide.
  • the die half assemblies each include a die half that forms the crimping surface that directly interacts with the workpiece to apply the crimping forces to the workpiece.
  • the guide includes at least one guide rod held on a die half unit. This guide rod is guided in a guide recess of the other die half unit.
  • the guide rod and the guide recess can have any desired cross section, as long as they ensure longitudinal guidance over the crimping stroke.
  • the guide rod and the guide recess preferably have a (partially) circular guide cross section.
  • both guide rods are provided, which are then guided in corresponding guide recesses.
  • both guide rods can be provided on one die-half unit, while both guide recesses are then arranged on the other die-half unit.
  • each die half unit it is also possible for each die half unit to have a guide rod and a guide recess.
  • the die halves are solid with large crimping surfaces. These crimping surfaces according to EP 0 516 598 B1 are continuously trained. A continuous crimping surface of a die half according to EP 0 516 598 B1 is convex, while the crimping surface of the other die half according to EP 0 516 598 B1 is concave. According to the invention, however, it is proposed in a die half unit with a guide, for example accordingly EP 0 516 598 B1 to use another type of die halves, namely die halves each having a plurality of ribs. The ribs of the die halves then intermesh with an extent of engagement that varies over the crimping stroke.
  • the crimping surfaces of the die halves are formed by end faces of the ribs.
  • This type of die therefore does not produce a large-area, continuous pressing of the workpiece between the die halves, but rather the pressing takes place in several partial areas arranged at a distance from one another in the area of the end faces of the spaced-apart ribs of the die halves.
  • the use of such die halves has proven to be advantageous for a special type of workpiece, in particular for pressing ferrules with a cable.
  • Die halves with such interlocking Ribs are, for example, from a tool by the applicant with the identification "CS 10-AE 22" or from one of the publications EP 3 179 580 A1 , US 4,283,933A and US 6,151,950A known.
  • the die halves have a base plate from which a die extends in the direction of the other die half.
  • the die plate on the guide On one side of the die has according to EP 0 516 598 B1 the die plate on the guide while according to EP 0 516 598 B1 the guide rod is fastened to the base plate on the other side of the die contour body.
  • the guide rod is formed by a thickened end area of at least one rib of a die half. This connection of the guide rod to the at least one rib of the die half can take place alternatively or in addition to its connection to a base plate.
  • the design of the guide rod through the thickened end region of the at least one rib results in a particularly compact design.
  • the guide rod can be produced as an integral part of the at least one rib. It is also possible that this reduces the assembly effort and reduces the number of components in the crimping tool die. Rather, the guide rod is connected to a plate-shaped base body of the rib at least over part of the extension of the rib(s) in the direction of the crimping axis, which can result in a particularly rigid support. The guide rod is therefore not held freely overhanging on the base plate, so that under certain circumstances the precision of the guide is increased and the mechanical strength of the same is increased.
  • the guide recess is formed by a guide recess area or connecting area which is arranged in the end area of at least one rib and preferably connects the end areas of two ribs of one die half.
  • the guide recess area forms a guide surface that is at least in the shape of a segment of a cylinder and the guide recess delimited by the guide surface, the guide recess being open at the edge in cross section, namely in the direction of the intermediate space between the two ribs is open.
  • the guide recess area then has a guide surface in the form of a segment of a cylinder, on which the guide rod is guided.
  • the cylinder segment has a cylinder segment angle of more than 180 ° (preferably more than 200 °, more than 220 °, more than 240 °, more than 260 °, more than 280 °), which can result in the cylinder segment-shaped Guide surface can be supported in orthogonal directions in a plane transverse to the guide axis.
  • a very stiff support can be guaranteed.
  • the die halves can be manufactured using any manufacturing method, for example using a casting method, an injection molding method and/or a material-removing or milling manufacturing method.
  • the die halves are designed as powder injection molded parts.
  • Powder injection molding which is also known as the PIM process (English for power injection molding) or MIM process (English for metal injection moulding), is a primary shaping process for the production of metallic components.
  • PIM process English for power injection molding
  • MIM process English for metal injection moulding
  • Any post-processing can possibly be carried out after production in an injection molding process. It has been shown that a powder injection molding process is advantageous for manufacturing the die halves and the complex geometry of the multiple ribs arranged parallel to one another and/or the guide.
  • At least one die-half unit has a bearing part.
  • the die half unit can be pivotally mounted on an associated tong jaw.
  • the assembly takes place with a pivot axis which is arranged vertically to a pivot plane of a pliers jaw.
  • the die half units can be aligned with one another on the jaws of the tongs in such a way that the guide rod is arranged coaxially with the guide recess, which means that the die half units can then be pushed into one another on the one hand when the guide rods enter the guide recesses and possibly on the other hand is possible with the meshing of the ribs.
  • the bearing part accordingly EP 0 516 598 B1 be designed as a pivot bolt, the recording is in a bearing eye of a pliers jaw.
  • the bearing part has a bearing body.
  • the bearing body can have a cylinder-segment-like guide surface with a guide diameter.
  • the bearing body has an insertion surface. In the area of the insertion surface, the extension of the bearing body is smaller than the guide diameter.
  • the bearing body of the bearing part is rotated in such a way that the bearing body with the smaller extension in the area of the insert surface can be inserted through the edge opening into the bearing eye. If the bearing body is then located in the bearing eye, the bearing body is twisted in such a way that the larger guide diameter of the cylinder-segment-like guide surface comes into effect, which means that the bearing body can no longer emerge from the edge opening.
  • the edge opening of the bearing eye of the pliers jaw has an extent that is smaller than the guide diameter and larger than the extent of the bearing body in the area of the insertion surface.
  • the die half unit has a holding body which can also form the bearing part or which can also hold the bearing part.
  • the die half is mounted on the holding body via a rotary bearing.
  • the pivot bearing has an axis of rotation that is oriented parallel to the guide axis of the guide rod and/or the guide recess.
  • the axis of rotation runs parallel or coaxially to the guide axis of the guide.
  • the axis of rotation can coincide with the crimping axis of the crimping tool.
  • the rotary bearing can be used to ensure that the die half units rotate together relative to the tong jaws in such a way that the workpiece can be inserted into a die holder in different directions, so that the workpiece can be inserted from the front or from the side, for example.
  • a latching device or a locking device can be arranged between the holding body and the die half.
  • the latching device or locking device can then latch or lock the die half at predetermined relative angles of rotation between the holding body and the die half about the axis of rotation.
  • the latching device or locking device can thus have an operating position of the crimping tool die to back up.
  • a locking can be left by the user applying sufficiently large turning forces about the axis of rotation, while locking cannot be left by simply applying a torque about the axis of rotation, but rather an unlocking element must also be actuated manually.
  • the holding body and the die surface have guide surfaces. These guide surfaces are oriented vertically to the axis of rotation. The holding body and the die half are guided against one another on the guide surfaces during the rotation about the axis of rotation. On the other hand, the crimping force between the holding body and the die half can also be supported via the guide surfaces.
  • a guide surface has a recess. A latching or locking element is then arranged in the recess, which is acted upon by a prestressed spring. The other guide surface then has latching or locking recesses.
  • the latching or locking element is then (at least partially) arranged in an associated latching or locking recess, whereby the latching or locking is provided.
  • a latching or locking can be provided in a structurally simple but reliable manner.
  • the pivot bearing for the rotatable mounting of the holding body in relation to the die half can be of any desired design.
  • the holding body has a bearing extension to form the pivot bearing.
  • the bearing extension is oriented parallel to the guide axis of the guide rod and/or the guide recess of the die half unit.
  • the bearing extension extends through a rotary bearing bore of the die half and has an axial securing element. A material area of the die half can then be trapped between a base body or a base plate of the holding body and the axial securing element, which prevents the bearing extension from escaping axially from the rotary bearing bore of the die half.
  • the die half can have a lateral slot between the end face facing the holding body and the crimping surfaces.
  • the end area of the bearing extension can then have an annular groove.
  • the annular groove at the end of the bearing extension is accessible via the lateral slot and an axial securing element designed as a locking ring can then be inserted through the lateral slot and snap onto the annular groove.
  • an insertion stop may be provided on the crimping pliers or the crimping pliers die, via which an insertion aid for the workpiece in the die receptacle is provided.
  • An insertion stop is preferably used to specify how far the workpiece can be inserted into the die receptacle in the direction of the longitudinal axis of the workpiece in the direction of the longitudinal axis of the die receptacle.
  • the insertion stop is provided on the die half unit, it also being possible for the insertion stop to be arranged on the die half or formed integrally with it.
  • These insertion stops are adapted for different workpieces, for example different sizes and axial lengths of ferrules.
  • the different insertion stops can thus specify different insertion depths for the depth at which the workpiece is inserted into the die receptacle.
  • the insertion stops are distributed (equally or unevenly) over the circumference and the axis of rotation of the stop body. By rotating the stop body about the axis of rotation of the stop body, the different insertion stops can then be brought into effect, so that the user can adjust the crimping tool die by rotating the stop body, namely by adjusting the insertion depth, to different workpieces, in particular different types or sizes of a Ferrule can make.
  • a stop body latching device or stop body locking device is provided for one embodiment of the crimping tool die.
  • the stop body latching device or stop body locking device latches or locks the stop body in predetermined stop body rotation angles of the stop body relative to the die half, with which the operating position of the stop body can be secured.
  • the stop body and the die half each have stop body guide surfaces.
  • the stop body guide surfaces are oriented vertically to the stop body axis of rotation.
  • the stop body and the die half are guided relative to one another on the stop body guide surfaces during the rotation about the stop body axis of rotation.
  • a stop body guide surface has a recess.
  • a spring-loaded stop body locking element or a stop body locking element is arranged in this recess.
  • the other stop body guide surface has a plurality of stop body latching recesses or stop body locking recesses.
  • the stop body latching element or stop body locking element is at least partially arranged in the predetermined relative stop body rotation angles, in which an insertion stop associated with the stop body rotation angles is arranged at the correct point with respect to the die receptacle. In this way, an operating position of the stop body specified by the user can be secured.
  • the die half has a stop body bearing extension.
  • This stop body bearing extension extends through a stop body pivot bearing bore of the stop body.
  • the stop body bearing extension has an axial securing element, which can be a securing ring accommodated in an annular groove of the stop body bearing extension.
  • the stop body can be caught axially between a base body of the die half and the axial securing element, which provides protection against the stop body bearing extension escaping from the stop body.
  • the die half units are designed differently in the crimping tool die. On the one hand, the differences can relate to the die contours and the design of the crimping surfaces. However, it is also entirely possible that the guide or other components or design criteria of the die half units differ from one another. To cite just one non-limiting example of the invention, one die-half unit can have the two guide rods, while this die-half unit does not form any guide grooves, in which case the other die-half unit can only have guide grooves.
  • the two die half units, the two bearing parts and/or the two die halves are of identical design, which reduces the variety of components, production costs can be reduced, greater interchangeability can be guaranteed and the storage effort can also be reduced.
  • a further solution to the problem on which the invention is based is represented by crimping pliers.
  • die half units of a crimping pliers die as has been described above, are held on the jaws of the crimping pliers.
  • At least one die half unit is supported in the crimping tool via a force-displacement compensation element.
  • a force-displacement compensation element specifically provides elasticity on the path of the actuating forces applied by the user to the hand lever of the crimping tool to the jaws and to the die half units. This elasticity can be used to increase the range of possible workpiece geometries that can be crimped using the crimping tool and the same die half units.
  • the crimping pliers are basically designed for crimping a workpiece with a relatively small geometry, crimping a workpiece with a larger geometry using the crimping pliers and the same die half units means that the necessary crimping forces have already been generated before the hand lever is fully closed .
  • the closed position of the hand lever cannot be reached without a force-displacement compensation element.
  • a forced locking mechanism is also used in the crimping pliers, it is imperative that the closed position be reached in order to open the crimping pliers again.
  • the generation of further increased actuating forces on the crimping pliers to elastic yielding of the force-displacement compensation element can then take place in such a way that the hand lever can be closed completely, which then also allows the hand lever to be opened again by the forced locking mechanism can be allowed.
  • force-displacement compensation elements such as these from the publications EP 3 012 923 B1 or EP 0 732 779 B1 , EP 0 158 611 B1 , DE 31 09 289 C2 , DE 20 2012 102 561 U1 , DE 20 2009 005 811 U1 , DE 10 2013 100 801 A1 and EP 2 905 848 B1 are known.
  • the crimping tool die 1 shows a three-dimensional exploded drawing of a crimping tool die 1.
  • the crimping tool die 1 has an upper die half unit 2 and a lower die half unit 3, which are of identical design, so that the following description primarily refers to the die half unit 2, in which case the same also applies to the other die half unit 3 .
  • the die half unit 2 has a holder body 4 and a die half 5 .
  • the holding body has a bearing part 6 with a bearing body 7 and with stops 8, 9, which are designed here as webs 10, 11 arranged on both sides of the bearing body 7.
  • the bearing part 6 with the bearing body 7 and the webs 10 , 11 is arranged on the side of the holding body 4 facing away from the die half 5 .
  • the holding body 4 On the side facing the die half 5 , the holding body 4 forms a guide surface 12 . At least one recess 13 , 14 , here in the form of a blind hole 15 , 16 , extends from the guide surface 12 . At the bottom of the recess 14 is a spring 17 and via the spring 17 a latching element 18 , here a latching ball 19 , is supported. Depending on the installation situation, the spring 17 can also be arranged with the latching element 18 in the other recess 13, or a spring with an associated latching element can be assigned to both recesses 13,14.
  • the bearing body 7 has a cylinder-segment-like guide surface 20 and an insertion surface 21, which can be a flattening 22, for example.
  • the die half 5 has a guide surface 23 on the side facing the holding body 4.
  • the guide surface 23 of the die half 5 rests against the guide surface 12 of the holding body 4, with the guide surfaces 12, 23 also supporting the crimping force between the die half 5 and the holding body 4 takes place.
  • the guide surfaces 12, 23 ensure guidance during the relative rotation of the die half 5 with respect to the holding body 4, which will be explained below, and the guide surfaces 12, 23 ensure the desired alignment of the die half 5 with respect to the holding body 4 independently of this relative rotation (Preferably in the direction of the crimping axis 105).
  • the locking recesses 24 are designed as blind holes or through-holes in a base plate 25 of the die half 5 .
  • the locking element 18 can be pressed by the spring 17 out of the holding body 4 into the locking recess 24 of the die half 5 and (at least partially) enter the locking recess 24, whereby the relative angle of rotation between Die half 5 and holding body 4 is secured.
  • a bearing extension 27 extends from a base plate 26 of the holding body 4 and is designed here as an axle journal and has an annular groove 29 in the end region facing away from the base plate 26 .
  • the bearing extension 27 is accommodated in a rotary bearing bore 30 of the die half 5.
  • the bearing extension 27 extends to a lateral slot 31 in the die half 5.
  • the annular groove 29 of the bearing extension 27 is accessible from the outside through the slot 31. so that it is possible to connect an axial securing element 32, here a securing ring 33, to the bearing extension 27 through the lateral slot 31, in that the securing ring 33 snaps into the annular groove 29 for the configuration of the securing element 32 as a securing ring 33. In this way, the bearing extension 27 of the holding body 4 is secured against exiting the die half 5 again.
  • the mounting of the bearing extension 27 of the holding body 4 in the pivot bearing bore 30 forms a pivot bearing 34.
  • the pivot bearing 34 enables the die half 5 to rotate relative to the holding body 4 about an axis of rotation 35 which is oriented parallel or coaxially to the crimping axis 105. For different relative angles of rotation between the holding body 4 and the die half 5 about the axis of rotation 35, it can be secured by the latching element 19 entering one of the latching recesses 24a, 24b, .
  • the die half 5 has a plurality of plate-shaped ribs 37a, 37b,
  • the pitch of the ribs 37a, 37b, ... is slightly greater than the thickness of the ribs 37a, 37b, ...
  • the ribs 37a, 37b, ... all have the same thickness.
  • the ribs 37 of the die halves 5 of the die half units 2, 3 preferably lie against one another as closely as possible, but with little friction, so that a transition fit or clearance fit can be present here.
  • a relative movement of the ribs 37 in the direction of the crimping axis 105 and the axis of rotation 35 is therefore possible. In a direction vertical to the plane of extent of the ribs 37, there is at most a small play for a relative movement of the holding bodies 4 of the die half units 2, 3.
  • the ribs 37 are basically formed in accordance with a right-angled triangle.
  • the legs delimiting the right angle of the triangle are mutually connected to the base plate 25 of the die half 5, with the result that crimping surfaces 39, 40 formed by the ribs 37 of adjacent ribs 37 form a type of V or a right angle.
  • the crimping surfaces 39, 40 of the two die halves 5 of the die half units 2, 3 delimit the in 2 visible square, rectangular or diamond-shaped cross-sectional contour of the die receptacle 38.
  • the size of the die receptacle 38 can be reduced over the crimp stroke by relative movement of the die half units 2, 3 in the direction of the crimping axis 105, but a square, rectangular or diamond-shaped geometry is still maintained.
  • the dies have (apart from the side with the crimping surfaces 39, 40) a basically cuboid external geometry to form the die receptacle 38, this being open in the area of the intermediate spaces between the ribs 37.
  • a (preferably central) rib 37 extends beyond the cuboid external geometry with a strip-shaped or plate-shaped extension section 41 and a thickening 42 at the end Rib 37 connected to the rib 37 in the direction of the crimping axis 105 .
  • the extension section 41 and the thickening 42 have a constant cross-section in the direction of the crimping axis 105, which is formed in the area of the extension section 41 by two guide surfaces arranged parallel to one another.
  • the cross section is designed in the shape of a part circle, with the result that the guide rod 43 forms a guide surface 44 in the manner of a segment of a cylinder.
  • the guide recess area 45 has two plate or strip-shaped extension sections 46, 47 and a guide recess section 48.
  • the extension sections 46, 47 form guide surfaces arranged parallel to one another, while the guide recess section has a cylindrical segment-shaped guide surface on the inside 49 trains.
  • the guide surface 49 forms a guide recess 50 or (open-edged) guide bore.
  • the guide recess area 45 extends over the entire extent of the associated ribs 37 in the direction of the crimping axis 105 and has a constant cross section over the entire extent.
  • At least one die half 5 of the crimping tool die 1 can have a stop body 52, which is designed here as a stop disk.
  • the stop body 52 is rotatably mounted on a base body or a rib 37 of the die half 5 via a stop body pivot bearing 53, the stop body pivot bearing 53 having a stop body pivot axis 54 which is oriented vertically to the main plane of extension of the ribs 37.
  • the stop body pivot bearing 53 is formed with a stop body bearing extension 55 which extends from the base body or the rib 37 of the die half 5 and has a stop body annular groove 56 at the end.
  • the stop body 52 has a stop body pivot bearing bore 57.
  • the stop body bearing extension 55 of the die half 5 extends through the stop body pivot bearing bore 57 of the stop body 52.
  • an axial stop body securing element 58 here a stop body securing ring 59, which Recording takes place in the stop body annular groove 56
  • the stop body 52 is secured axially on the die half 5.
  • the stop body 52 is caught axially between the stop body securing element 58 and the base body or the rib 37 of the die half 5 .
  • the stop body 52 has a plurality of insertion stops 60a, 60b distributed over the circumference around the stop body axis of rotation 54, which can be brought into an operating position at different relative angles of rotation of the stop body 52 with respect to the die half 5 around the stop body axis of rotation 54 in which the latter each specify an insertion position for inserting a workpiece into the die receptacle 38 .
  • the insertion stops 60a, 60b can have different through-holes, which can be conical on the side facing away from the die half 5, for example, or can also have an elongate cross-section deviating from a circular cross-section with beveled guide surfaces.
  • the individual insertion stops 60 can have different stop positions with respect to the stop body axis of rotation 54, with the different stop positions resulting in a ferrule being inserted to different extents into the die receptacle 38 for the different insertion stops 60 in their operating positions.
  • the different insertion positions can then ensure, for example, that an inner end region of a ferrule is located at a predetermined point of the swage receptacle 38, in particular in a predetermined position relative to the ribs 37.
  • the crimping tool die 1 has a stop body latching device 61.
  • the die half 5 has a recess 62, at the bottom of which there is a spring 63 and via the spring 63 a stop body latching element 64, here in the form of a Detent ball 65, supported.
  • the stop body 52 On the side facing the die half 5, the stop body 52 has a plurality of stop body latching recesses 66 distributed over the circumference, into which the stop body latching element 64 can latch in the different operating positions of the insertion stops 60.
  • FIG. 4 and 5 1 shows a crimping tool 67 (without front fixed tool part plate) in which the die half units 2,3 of the crimping tool die 1 are mounted on tool jaws 68,69.
  • figure 5 a detail IV of the connection area of the crimping pliers die 1 with the pliers jaws 68, 69.
  • the pliers jaws 68, 69 each form a bearing eye 70 which, together with the bearing body 7 of the die half units 2, 3, forms a pivot bearing 71 with an axis of rotation 72 which is vertical according to the drawing plane 4 and 5 and vertical to the pivot plane of the jaws 68, 69 is oriented.
  • the bearing eye 70 has a bearing bore 73 with an edge opening 74.
  • the bearing bore 73 is in the form of a cylinder segment with a segment angle that is greater than 180°, for example in the Range from 190° to 240°.
  • the lateral limits 75, 76 of the edge opening 74 are therefore at a distance which is smaller than a guide diameter of the bearing bore 73.
  • the bearing body 7 can be pivoted vertically to the pivoting plane of the pincer jaws 68 , 69 in such a way that the insertion surface 21 is arranged inside the bearing eye 70 .
  • the larger guide diameter of the cylinder-segment-like guide surface 20 of the bearing body 7 prevents the bearing body 7 from exiting the bearing eye 70 again for this angle of rotation and adjacent angles of rotation covered during the crimping stroke an exit from the same is possible, selected so that this angle of rotation is never reached for the mounted crimping tool 67 with the crimping tool die 1 held thereon, but this angle of rotation is only possible for at least partially dismantled crimping tool 67.
  • FIG. 6 shows a possible embodiment of a crimping tool 67, in which a crimping tool die 1 can be used, in an exploded view.
  • the crimping pliers have a fixed pliers part 67.
  • the fixed pliers part 67 forms a fixed hand lever 68.
  • the fixed tong part 67 has a front and a rear fixed tong part plate 79 .
  • An elastic jaw 81 is pivotably supported on the fixed part 77 of the pliers via a pivot bolt 80, preferably in the region of the hand lever 78.
  • the elastic pliers jaw 81 is pivotably mounted on the fixed pliers part 77 via a further pivot pin 82 .
  • the pivot pin 82 can alternatively be arranged in the area of a first longitudinal extension 83 or a second longitudinal extension 84 of the elastic jaw 81 .
  • the first longitudinal extent can, for example, correspond to approximately half the longitudinal extent of the elastic pincer jaw 81, while the second longitudinal extent 84 can be arranged, for example, at a distance of 1/3 to 1/4 of the elastic pincer jaw 81 from the pivot bolt 80.
  • the elastic jaw 81 thus has a freely projecting jaw section 85, in the free end area of which the bearing eye 70 is arranged.
  • the elasticity, in particular the rigidity of the material and/or the cross section and the area moment of inertia of the elastic jaw 81 are/is such chosen so that with sufficiently large crimping forces, an elastic bending or evasive movement of the elastic pliers jaw 81 and with this of the bearing eye 70 can take place. In this way, a force-displacement compensation element 86 is provided.
  • a movable hand lever 87 is articulated in one end region via a pivot bearing 88 with a pivot pin 89 on a movable jaw 90 of tongs.
  • the movable tong jaw 90 is also pivotably mounted on the fixed tong part 77 via a pivot bearing 91 with a pivot bolt 92 .
  • the movable hand lever 87 is also connected to a pressure lever 95 via a pivot bearing 93 with a pivot pin 94 .
  • the pressure lever 95 is articulated in one end via a pivot bearing 96 with a pivot pin 97 on the fixed tong part 77 .
  • An opening spring 104 acts between the movable jaw 90 and the elastic jaw 81.
  • the movable hand lever 87, the pressure lever 95 and the articulation of the movable hand lever 87 on the movable jaw 90 form a toggle lever mechanism 98.
  • a toggle joint 99 of the toggle lever mechanism 98 is connected to the pivot bearing 93, while a first toggle lever is formed by the pressure lever 95 in the portion between the pivot bearings 93,96 and a second toggle lever is formed by the movable hand lever 87 in the portion between the pivot bearings 88,93.
  • the movable pliers jaw 90 and the elastic pliers jaw 81 each form a bearing eye 70 in the end areas in the area of a pliers mouth.
  • the bearing bodies 7 of the die half units 2, 3 of the crimping tool die 1 are then mounted in the bearing eyes 70.
  • the crimping tool 87 is designed in a plate design, with individual plates being able to be designed in multiples.
  • the crimping tool 67 also has a ratchet mechanism 100.
  • the ratchet mechanism 100 prevents the crimping stroke from being run through even with several partial crimp stages, with the ratchet mechanism 100 preventing the crimping pliers 67 from opening after the respective partial crimp stages. Rather, an opening of the crimping tool 67 is only made possible by the ratchet mechanism 100 when the crimping stroke and thus all the partial crimping stages have been completely passed through.
  • the ratchet mechanism 100 has external teeth 101 of the pressure lever 95, a pawl 102 and a pawl spring 103.
  • FIG 8 shows a crimping tool 67 with the crimping tool die 1 held thereon in an open position
  • FIG 9 shows the crimping tool 67 in a closed position.
  • a connecting axis of the axes of rotation 72 of the two die-half units 2, 3 forms a crimping axis 105, in the direction of which a crimping force is generated, which is applied via the crimping surfaces 39, 40 to the lateral surface of the workpiece, which is arranged in the die receptacle 38.
  • the configuration of the guide 51 can be used for any configuration of the die halves 5, in particular also for die halves 5 that are not designed as ribbed dies with ribs 37.
  • the thickening 42 forming the guide rods 43 is formed by the lateral end portion of a single rib 37. It is also possible within the scope of the invention for the thickening 42 to be formed jointly by the lateral end regions of two directly adjacent or also spaced ribs 37 or even more ribs 37 .
  • the guide recess 50 is formed by the lateral end areas of two adjacent ribs 37 . It is also possible within the scope of the invention for the guide recess 50 to be formed by just a single rib 37, the lateral end area of which then encompasses the guide rod 43 from one side, or for the guide recess 50 to be formed by the end areas of two ribs 37 that are not directly adjacent (or even formed by more than two ribs 37).
  • the rotary bearing 34 which enables the die halves 5 to rotate together about the pivot axis 35, is an integral part of the crimping pliers die 1 according to the invention the crimping pliers are articulated, which is done for the illustrated embodiment with an additional pivoting degree of freedom.
  • the invention also includes an embodiment of a Crimping pliers die with two die half units 5, the crimping pliers die 1 then not forming the complete pivot bearing 34, but only a pivot bearing element 106 of the pivot bearing 34.
  • the pivot bearing element 106 can be, for example, a bearing eye such as the pivot bearing bore 30 (or a bearing journal).

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Forging (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP21170759.1A 2020-04-28 2021-04-27 Crimpzangen-gesenk und crimpzange Active EP3904007B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020111522 2020-04-28

Publications (3)

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EP3904007A1 EP3904007A1 (de) 2021-11-03
EP3904007C0 EP3904007C0 (de) 2023-06-07
EP3904007B1 true EP3904007B1 (de) 2023-06-07

Family

ID=75728603

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EP21170759.1A Active EP3904007B1 (de) 2020-04-28 2021-04-27 Crimpzangen-gesenk und crimpzange

Country Status (5)

Country Link
US (1) US11631957B2 (https=)
EP (1) EP3904007B1 (https=)
JP (1) JP7688894B2 (https=)
CN (1) CN113571989B (https=)
TW (1) TWI850553B (https=)

Cited By (2)

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DE202024104702U1 (de) 2024-08-20 2024-12-09 Wezag Gmbh & Co. Kg Gesenkhälfteneinheit und Crimpzange
EP4699743A1 (de) 2024-08-20 2026-02-25 WEZAG GmbH & Co. KG Crimpzange

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EP4007087B1 (de) * 2019-11-11 2024-02-07 WEZAG GmbH & Co. KG Crimpzange
EP3904006B1 (de) * 2020-04-28 2023-06-07 WEZAG GmbH & Co. KG Crimpzangen-gesenk und crimpzange
DE102022101938A1 (de) * 2022-01-27 2023-07-27 Weidmüller Interface GmbH & Co. KG Handbetätigbares Presswerkzeug
DE202023101054U1 (de) 2023-03-06 2023-07-14 Gustav Klauke Gmbh Presswerkzeug mit einem Paar von Werkzeugteilen zum Vercrimpen eines Presslings sowie Paar von Werkzeugteilen für ein Presswerkzeug
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CN222107243U (zh) * 2024-02-26 2024-12-03 乐清市胜搏工具有限公司 一种压线钳结构

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202024104702U1 (de) 2024-08-20 2024-12-09 Wezag Gmbh & Co. Kg Gesenkhälfteneinheit und Crimpzange
EP4699743A1 (de) 2024-08-20 2026-02-25 WEZAG GmbH & Co. KG Crimpzange

Also Published As

Publication number Publication date
EP3904007C0 (de) 2023-06-07
TW202143591A (zh) 2021-11-16
TWI850553B (zh) 2024-08-01
JP7688894B2 (ja) 2025-06-05
JP2021171916A (ja) 2021-11-01
US20210336399A1 (en) 2021-10-28
US11631957B2 (en) 2023-04-18
CN113571989B (zh) 2025-09-23
EP3904007A1 (de) 2021-11-03
CN113571989A (zh) 2021-10-29

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