Classifications

• • 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
  • H01R43/048—Crimping apparatus or processes
• • 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
  • H01R43/048—Crimping apparatus or processes
  • H01R43/0488—Crimping apparatus or processes with crimp height adjusting means
• • 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
  • H01R43/048—Crimping apparatus or processes
  • H01R43/055—Crimping apparatus or processes with contact member feeding mechanism

Definitions

• the invention relates to a device for crimping metal lugs onto electrical wires with an insulating sheath, one end of which has been previously stripped, of the type comprising:
• a sole adapted to be fixed on a fixed table of a press, - at least one crimping anvil, carried fixed by the sole, and defining at least a first crimping imprint,
• crimping tool holder carrying at least one crimping die defining at least a second crimping imprint, the shape of which is conjugated with that of a first imprint and suitable for crimping a tight terminal between the imprints and around said end of the wire along an axis, called crimping axis, corresponding to the direction of the wire,
• this tool holder being adapted to be mounted integral in translation with a press slide and guided in translation relative to the sole, so as to be moved, by and with the movements of the slider, according to reciprocating movements of approximation and spacing with respect to the sole for crimping,
• mini-applicators allow the series production of metal lugs in a semi-automatic manner, a worker placing the wires one by one on the anvil before the press is actuated.
• the entire "mini-applicator" device is changed at each manufacturing change.
• it is necessary to dismantle the whole of the previous mini-applicator and reassemble on the press a new mini-applicator whose crimping imprints correspond to the lug models. and crimp wire.
• the invention aims to overcome these drawbacks by proposing the same crimping device capable of carrying out the manufacture - in particular in series - of different models of metal lugs.
• the invention aims to propose a crimping device which is not dedicated to a single lug model and to a single wire model and which therefore does not have to be dismantled with each change of manufacture, in particular each wire model.
• the invention also aims to provide a crimping device with which the change of wire model can be automated, i.e. carried out automatically by a robot, or carried out by the press operator, without requiring the intervention of a specialized maintenance mechanic .
• the invention also aims to reduce the investment cost necessary for the crimping of a terminal model on wires of different diameters and models, both with regard to the cost of the tool itself and the cost necessary for its storage and handling.
• the invention also aims to avoid delicate handling and losses due to handling errors.
• the invention relates to a crimping device as mentioned above, and which is characterized in that:
• each crimping anvil is fixed to the sole by removable rigid fixing means allowing disassembly of the anvil relative to the sole without requiring disassembly of the sole relative to the press table,
• each crimping die is fixed to the tool holder by removable rigid fixing means allowing disassembly of the die from the tool holder without requiring the dismantling of the tool holder relative to the press slide,
• Said removable rigid fixing means are adapted to allow the fixing of anvil (s) and matrix (s) of various shapes and / or dimensions.
• each matrix is carried by the same support block for die (s), and the tool holder comprises a housing for receiving a die (s) support block.
• the anvil is carried by the same anvil support block (s) and the sole defines a base for receiving an anvil support block (s).
• At least one block of matrix support (s) and at least one anvil support (s) - and preferably each of these blocks - forming a set of crimping tools for crimping a pod model are associated with each other in an autonomous assembly, called cassette, adapted so that these blocks can be assembled and disassembled together with respect to the tool holder and the sole.
• the matrix support block (s) and the anvil support block (s) are associated with each other by two assembly columns, adapted to allow their relative movements of translation in the direction of approximation of the crimping impressions, but limiting their relative movements of translation in the direction of spacing to a value greater than or equal to that of their maximum spacing when they are fixed to the tool holder and to the sole .
• changing the crimping tools is extremely simple, can be done by the press operator, or even automatically by a robot.
• the removable rigid fixing means of each anvil to the sole comprise an assembly of the dovetail type or equivalent, in particular whose axis extends parallel to the crimping axis.
• the removable rigid attachment means of each die to the tool holder comprise a screw for assembling each die, and preferably from the die support block (s) to the tool holder - in particular a screw extending parallel to the crimping axis cooperating with a corresponding thread arranged in the tool holder.
• the die support block (s) and / or the anvil support block (s) comprises means for continuously adjusting the position of a first and / or a second crimping impression. in the direction of translation of the tool holder.
• the automatic supply and cutting means are arranged to move the strip at each cycle of lugs perpendicular to the crimping axis, and comprise:
• a jack comprising a jack body carried by the sole and an actuating rod arranged perpendicular to the crimping axis,. a pawl carried by the actuating rod and adapted to drive the strip during its movements towards the crimping axis and not to drive it in the opposite direction,
• this stop screw being carried by a tapped thread with an axis perpendicular to the crimping axis, provided in a part carried by the actuating rod 1, the end of this abutment screw abutting against a bearing secured to the body of the jack and limiting the displacement stroke of the actuating rod towards the crimping axis.
• the stop screw is placed opposite one side of the jack body and at the front of the device, and constitutes means for adjusting the amplitude of the advance of the strip, and therefore the portion length of strip (corresponding to a terminal) supplied perpendicular to the crimping axis during each cycle.
• the automatic supply means comprise means for adjusting the position of the strip and therefore the terminals, along the crimping axis.
• the device also comprises means for continuously adjusting the position of the tool holder relative to a slide of press in the direction of translation relative to the sole.
• the invention also relates to a tool cassette for a crimping device according to the invention.
• a cassette according to the invention is characterized in that it comprises a matrix support block (s) and an anvil support block (s) associated with one another in an autonomous assembly and adapted to be able to be mounted. and disassembled together with respect to the device.
• a cassette according to the invention is characterized in that it comprises in combination all or part of the characteristics described above in relation to the crimping device.
• the invention also relates to a crimping device and a tool cassette comprising in combination all or part of the characteristics mentioned above or below.
• FIG. 1 is a diagrammatic perspective view showing a device according to the invention with the tool cassette shown removed from the device,
• - Figure 2 is a schematic elevational view with details in partial section of a crimping device according to the invention
• - Figure 3 is a schematic view showing a crimping device according to the invention with the tool holder in axial section and the automatic supply means, the sole and the anvil support block (s) in elevation
• - Figure 4 is a sectional view along line IV - IV of Figure 2
• FIG. 5 is a sectional view along the line V - V of FIG. 3
• - Figure 6 is a sectional view along line VI - VI of Figure 5.
• FIG. 7 is a diagrammatic view in elevation of a cassette of tools according to the invention
• FIG. 8 is a diagrammatic view in vertical section of the cassette of FIG. 7.
• the invention relates to a crimping device in series of metal lugs on electric wires (not shown in the figures) with insulating sheath, one end of which has been previously stripped.
• This crimping device of the so-called mini-applicator type comprises a sole 1 adapted to be fixed to a fixed table of a press (not shown); a crimping tool holder 2 adapted to be able to be mounted integral in translation with a press slide (not shown); automatic means 3 for supplying and cutting the lugs successively one by one from a strip of identical preformed metal lugs 4.
• the strip 4 is therefore formed of a string of lugs linked together and which adjoin each other.
• Each terminal is intended to be compressed between at least a first crimping imprint 5 defined by at least one crimping anvil 6 fixedly carried by the sole 1, and at least a second crimping imprint 7 defined by at least one crimping matrix 8 carried by the tool holder 2.
• the first (s) 5 and second (s) 7 crimping imprints have shapes which are conjugated to each other and adapted to crimp a terminal by a wire from a preformed lug of the strip 4. Each lug is clamped between these imprints and around said end of the wire along an axis 9 known as crimping axis 9, corresponding to the direction of the wire placed between these imprints.
• the tool holder 2 is assembled integral in translation with respect to the slide by means of conventional assembly means 10, but which comprise continuous adjustment means 11 for the position of the tool holder 2 with respect to the slide in the direction of translation of the tool holder 2 and the slide relative to at sole 1 and at the press table.
• These adjustment means 11 comprise, for example, two shims with inclined contact surfaces, displaced one relative to the other perpendicular to the axis of translation of the tool holder 2 by means of a knurled head screw and whose thread cooperates. with a thread on one of the shims and rests on the other shim or on a part secured to the tool holder 2 ( Figure 4).
• These adjustment means 11 allow continuous adjustment of the vertical position of the tool holder 2 relative to the press slide, and therefore make it possible to adapt and adjust this position as a function of the travel of the press slide, from bottom dead center. of the press, and relative positions between the imprints 5, 7, that is to say between each die 8 and the anvil 6 corresponding.
• the tool holder 2 is guided in vertical translation along the axis of the press relative to the sole 1 thanks to lateral stirrups 12 fixedly mounted on the sole 1 and surrounding and guiding the tool holder 2. In this way, the tool holder 2 is guided in translation relative to the sole 1 so as to be moved with the movements of the slide according to reciprocating movements of approach and spacing with respect to the sole 1.
• the automatic feeding and cutting means 3 feed a lug of the strip 4 at each cycle between the cavities 5, 7 and places it for crimping along the crimping axis 9. These means 3 are synchronized with respect to the movements of the tool holder 2 with respect to the sole 1, so that a portion of strip 4 corresponding to a terminal is fed between the cavities during spacing, for cutting and by crimping the terminal during the subsequent approximation of said imprints 5, 7.
• the tool holder 2 carries a control finger 13, adapted to press and move in translation a rod 14 of a control distributor of a cylinder 15 of the automatic feeding means 3.
• the finger 13 actuates the control rod 14 when the tool holder 2 is in the separated position, that is to say in the high position, thus controlling the supply of a portion of strip 4.
• Each die 8 is formed of an associated vertical plate and carried by the same block 16 supporting the die (s), and the tool holder 2 comprises a housing 17 for receiving a block 16 supporting the die (s).
• the block 16 supporting the matrix (s) is generally parallelepiped, like the receiving housing 17.
• a screw 18 is associated with the block 16 supporting the matrix (s) so as to have a through thread which can be engaged in a tapping of a integral piece in translation of the tool holder 2, for example the control finger 13 in the embodiment shown in FIG. 4.
• Each anvil 6 is carried by the same block 19 anvil support (s) and the sole 1 defines a base 20 for receiving such a block 19 anvil support (s).
• the block 16 supporting the matrix (s) and the block 19 supporting the anvil (s), forming a single set of crimping tools for crimping a lug model, that is to say carrying first indentations 5 and second indentations 7 for crimping conjugated shapes, are associated with each other in an autonomous assembly 21, called tool cassette 21, adapted so that these blocks 16, 19 can be assembled and disassembled together with respect to to the device, that is to say respectively with respect to the tool holder 2 and with respect to the sole 1.
• the block 16 matrix support (s) and the block 19 anvil support (s) are associated with one another by two assembly columns 22 extending parallel to the direction of translation of the tool holder 2, that is to say vertically.
• the assembly columns 22 are engaged in corresponding bores made in the anvil support block 19 so as to be rigidly fixed to this block 19, at least when the latter is in the fixed position and mounted on the base 20 of the sole 1.
• the lower end of each column 22 is engaged in a hole in the block 19 and fixed by a screw 23 with a head, the end of which is screwed into a thread of the column 22, this screw 23 being engaged by the lower end of the bore of the block 19 support of anvil (s).
• the block 16 matrix support (s) comprises a vertical through hole for guiding the matrix support block relative to each column 22. This hole is formed in a bracket 24 extending horizontally rearward.
• the upper end of each column 22 is provided with a head 25 limiting the relative translational movement in the direction of the upward spacing of the block 16 matrix support (s), relative to the block 19 anvil support (s), at a value greater than or equal to that of their maximum spacing defined between the tool holder 2 and the sole 1, when these two blocks 16, 19 are fixed thereto.
• the anvil support block 19 is simply assembled and removably fixed to the base 20 of the sole 1 by a dovetail type assembly, with an axis parallel to the crimping axis 9.
• the anvil support block 19 comprises a male dovetail 26 and the base 20 comprises a female dovetail 27.
• This assembly 26, 27 with dovetail makes it possible to place each anvil 6 and each matrix 8 in the vertical plane containing the crimping axis 9 and the vertical translation axis 28 of the tool holder 2 relative to the sole 1.
• a transverse screw for axial locking of the dovetail assembly can be planned.
• the position in translation of the set of the crimping cassette 21 along the crimping axis 9 is determined by the rear faces 29 of the block 16 die support (s) and 30 of the block 19 anvil support (s) which abut and bear against the vertical faces of the tool holder 2, respectively of a support 31 of the stirrups 12 secured to the sole 1.
• the block 16 die support (s) has a horizontal upper face 52 coming in abutment and in abutment against a horizontal face of the housing 17 of the tool holder 2.
• the block 19 anvil support (s) rests on the sole 1.
• the screw 18 for removable fixing of the die support block 16 extends parallel to the crimping axis 9 and makes it possible to block the whole of the crimping cassette 21 in the mounted position relative to the device.
• the block 16 supporting the matrix (s) further comprises means 32, 33 for continuously adjusting the position of at least one crimping matrix 8 and therefore of a first crimping imprint, in the vertical direction of translation of the door -tool 2.
• These means 32, 33 comprise a wedge 32 at an inclined bearing coming into contact with the upper end of the die 8, and a screw 33 with knurled head, the thread of which is engaged in a thread passing through the wedge 32 for determine its transverse position relative to the matrix 8.
• the screw 33 by turning the screw 33, the position of the shim 32 is modified relative to the matrix 8, which has the effect of displacing this matrix 8 vertically in translation relative to the block 16 matrix support.
• the matrix 8 comprises at least one oblong vertical lumen 34 traversed by screws 35 for fixing the dies 8 relative to the block 16 supporting the matrix (s).
• This vertical light 34 is adapted to allow vertical adjustment in translation of the matrix 8 relative to the block 16 support of matrix (s).
• Each tool cassette 21 may comprise one or more dies 8, for example a first die for crimping the terminal around the conductive core of the wire, and a second adjacent matrix for crimping the terminal around the end of the insulating sheath of the wire.
• each anvil support block 19 can carry one or more anvils 6, namely for example an anvil for crimping the terminal around the stripped core of the electric wire and a second anvil for crimping the terminal around from the end of the wire sheath.
• the cassette 21 also includes a device 36 enabling the strip of lugs to be cut, after its transverse displacement, with a view to the separation of each terminal placed along the crimping axis.
• this strip cutting device can be mounted integral with the supply means 3 and therefore carried by the entire device and by the sole 1 (and not by the cassette 21). Dies 8 are assembled on the block
• the dies 8 and the imprints 7 can be formed by the block 16 itself in a single piece shaped for this purpose.
• the anvils 6 can be assembled on the block 19. In the embodiment shown, the anvils 6 and the imprints 5 are formed by the block 19 itself in a single piece shaped for this purpose.
• the crimping cassette 21 therefore constitutes a set of crimping tools which can be adjusted beforehand (thanks in particular to means 32, 33 of adjustment) and which is assembled and disassembled on the crimping device simply using a single screw 18. Assembly and disassembly of each crimping cassette 21 is therefore extremely simple and rapid. It is therefore possible to have as many crimping cassettes 21 as there are models of wires to be crimped on the same type of terminal, and this with a single crimping mini-applicator device. The cassettes having been previously adjusted, the change of manufacture can be carried out without additional adjustment, guaranteeing constant quality.
• Each crimping cassette 21 is advantageously provided with a location 37 making it possible to register or affix an identification plate of the model of wire and / or terminal to be crimped.
• the housing 17 for receiving the block 16 matrix support (s) on the tool holder 2 and this block 16 matrix support (s), are adapted to define between them a space 38 above the bracket 24 for the passage of the upper parts of the columns 22 during the downward movements (reconciliation of the cavities) of the tool holder 2.
• this space 38 is provided at the rear of the block 16 for die support (s) and above the bracket 24, so that even in the completely closed lower position of the two blocks 16, 19, the upper ends of the columns 22 do not protrude beyond the upper face of the block 16 matrix support (s ).
• the height of each of the blocks 16 supporting the mat ⁇ ce (s), whatever the corresponding terminal model, is preferably adapted so that the height of the space 38 corresponds to the maximum possible travel of the different models of the blocks 16 matrix supports.
• the jack 15 of the automatic feeding and cutting means 3 comprises a jack body 39 carried by the sole 1 and an actuating rod 40 disposed perpendicular to the crimping axis 9.
• a pawl 41 is carried by the actuating rod 40 and is adapted to drive the strip 4 in its movements towards the crimping axis 9 and not to drive it in the opposite direction, that is to say when the the end of the actuating rod 40 moves away from the crimping axis 9.
• this pawl 41 simply consists of a piece in the form of a latch bolt which is anchored under the strip 4 ( in each of the perforations provided for this purpose in the strip 4 or against each terminal) when it approaches the crimping axis 9 and can slide under the strip 4 in the opposite direction.
• the actuating rod 40 also carries a part 42 which extends parallel to the body 39 of the jack on the front side of the crimping device and carries at its free end a screw 43 for the end of travel stop of the rod. actuation 40.
• This stop screw 43 is carried by a thread with an axis perpendicular to the crimping axis 9 formed in the part 42, and the end of this stop screw 43 comes into abutment against a bearing 44 secured to the body jack 39.
• this screw 43 limits the displacement stroke of the actuating rod 40 towards the crimping axis 9.
• the part 44 forming a bearing against which the screw 43 abuts is mounted like the jack body 39 on a support 45 which is itself assembled to the sole 1 by screws.
• the position of the support 45 carrying all the means 3 for automatic feeding is determined relative to the sole 1 thanks to a rib 47 of the support 45 engaged in a groove 48 of the sole 1, formed parallel to the crimping axis and to the dovetail assembly of the cassette 21.
• the rib 47 and the groove 48 form means for adjusting the position of the strip along the crimping axis 9.
• a strip guide plate 49 is provided at- above the strip to prevent it from being raised during movement of the pawl 41, and to ensure its guiding between the indentations 5, 7.
• a rotary button 46 allows the plate 49 to be slightly raised for the introduction of the strip 4.
• Each cassette 21 is advantageously also equipped with a plate 50 forming a vertical abutment stop in the close crimping position and with a stripper 51 (shown only in FIG. 2).
• the automatic means 3 for feeding the strip can be pneumatic and / or mechanical and / or electromechanical, can be arranged to the left or to the right or towards the rear of the tool holder 2.
• Other removable fixing means dies 8 and / or anvils 6 and / or each crimping cassette 21 can be provided.
• the crimping device according to the invention can be of semi-automatic type, that is to say implemented by an operator who manually places the end of the wire intended to receive the terminal between the cavities before actuating the hurry.
• it can nevertheless also be fully automated, the end of the wire being placed between the impressions by an automation such as a robot.

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• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Manufacturing Of Electrical Connectors (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Coupling Device And Connection With Printed Circuit (AREA)
• Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9493098

Family Applications (1)

Country Status (8)

Families Citing this family (6)

Family Cites Families (3)

• 1996
  • 1996-06-12 FR FR9607471A patent/FR2749797B1/fr not_active Expired - Fee Related
• 1997
  • 1997-06-11 PT PT97928335T patent/PT904614E/pt unknown
  • 1997-06-11 DE DE69701099T patent/DE69701099T2/de not_active Expired - Fee Related
  • 1997-06-11 EP EP97928335A patent/EP0904614B1/de not_active Expired - Lifetime
  • 1997-06-11 ES ES97928335T patent/ES2143873T3/es not_active Expired - Lifetime
  • 1997-06-11 AT AT97928335T patent/ATE188580T1/de not_active IP Right Cessation
  • 1997-06-11 JP JP10501305A patent/JP2000513482A/ja active Pending
  • 1997-06-11 WO PCT/FR1997/001046 patent/WO1997048154A1/fr not_active Ceased

Non-Patent Citations (1)

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