EP1143579A1 - Station de travail pour contacts - Google Patents

Station de travail pour contacts Download PDF

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Publication number
EP1143579A1
EP1143579A1 EP01810283A EP01810283A EP1143579A1 EP 1143579 A1 EP1143579 A1 EP 1143579A1 EP 01810283 A EP01810283 A EP 01810283A EP 01810283 A EP01810283 A EP 01810283A EP 1143579 A1 EP1143579 A1 EP 1143579A1
Authority
EP
European Patent Office
Prior art keywords
contact
processing station
elastically deformable
contact processing
press
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01810283A
Other languages
German (de)
English (en)
Inventor
Markus Burger
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.)
Schleuniger Solutions AG
Original Assignee
Pawo Systems AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP00810295A external-priority patent/EP1143578A1/fr
Application filed by Pawo Systems AG filed Critical Pawo Systems AG
Priority to EP01810283A priority Critical patent/EP1143579A1/fr
Publication of EP1143579A1 publication Critical patent/EP1143579A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • H01R43/0484—Crimping apparatus or processes for eyelet contact members

Definitions

  • the invention relates to a contact processing station mentioned in the preamble of claim 1 Art.
  • Such contact processing stations are used to make electrical contact, for example a connector to be attached to a cable by pressing.
  • the contact becomes plastic deformed so that it encloses the stripped cable end with a tight press fit. Calls this process you crimp.
  • Such a contact processing station can also be used to create a To attach the sealing ring, in technical jargon seal, to the cable.
  • the contact and the sealing ring can be in a contact processing station or in two contact processing stations on the cable be attached.
  • Such contact processing stations are used by the applicant as well as by other companies manufactured and sold.
  • the contacts with a crimped press as rigid as possible to a predetermined crimp height.
  • the power that the Crimping action on the contact and pressing it onto the wire depends very much on the diameter of the stripped wire end. Fluctuations in the wire diameter naturally occur since the wire is usually made up of many strands and because stripping can occur, that one or the other strand is also cut off and lost. Also the thickness of the strands may vary.
  • the end of the wire is thinner than intended, use a commercially available one rigid press-trained contact processing station that is at a predetermined crimp height pressed, the lack of crimp resistance reduces the crimping force and thus the quality of the pressing reduced. For this reason, the force that occurs during crimping is measured, usually with Piezo sensors. The crimped contact is eliminated as faulty if the measured force is not is within predetermined limits. It is even common to track the force over time to detect the crimping process and to rule out the contact as faulty if the force in the temporal course is not within a predetermined tolerance band.
  • a contact processing station of the type mentioned in the preamble of claim 1 is e.g. in the European patent application EP 884811 described.
  • the invention has for its object the reject rate of such contact processing stations reduce and increase process reliability.
  • the invention is based on the idea of making the press of the contact processing station elastic deformable element to be provided, which during the crimping process depending on the occurring Force deformed in a controlled manner.
  • the elastically deformable element is used during the crimping process increasingly deformed until the force acting on the contact has reached a maximum, the force acting on the contact with increasing deformation of the elastically deformable Element increases continuously.
  • the spring constant of the elastic element is set so softly that the force with which the contact is pressed at the wire end is almost independent of Fluctuations in wire thickness. This way, even with wire ends that are for a Processing with a conventional press deviate too much from the target value and therefore as Committee would have to be eliminated, a gas-tight crimp was achieved.
  • the contact processing station according to the invention with an elastically deformable element is characterized in that if the effective crimp height deviates from, for example 0.2 mm from the optimal target crimp height, the maximum crimp force changes little while the Crimping force in a rigid contact processing station known from the prior art at least a factor of 2 increases or decreases.
  • the contact processing station comprises a mechanical pressing device that a first Press jaw 1 and a second press jaw 2 controlled by a drive.
  • the first press jaw 1 which is usually also referred to as a die or anvil, is on a base plate 3 arranged stationary.
  • the second press jaw 2, which is usually also used as a tool stamp or crimper is guided by means of a guide element 4 in the vertical direction.
  • the one as an eccentric trained drive comprises an eccentric 5, which by a motor, not shown, around her horizontal axis of rotation 6 with changing direction of rotation between two upper turning points 7 and 8 is rotated back and forth, which drives a connecting rod 9.
  • the connecting rod 9 is on the outer edge of the Eccentric disc 5 and on the second press jaw 2 with joints 10 and 11, respectively.
  • the connecting rod 9 transforms the rotary movement of the eccentric disc 5 into a vertical longitudinal movement of the second Press jaw 2.
  • the connecting rod 9 is designed as an elastically deformable element.
  • the second press jaw 2 is spring-mounted.
  • FIG. 1 shows the pressing device at the start of a crimping process in a state A in which the distance between the two pressing jaws 1 and 2 is at a maximum.
  • the connecting rod 9 is unloaded and therefore not deformed.
  • the length L 0 of the unloaded connecting rod 9 can be the distance between the two joints 10 and 11.
  • 2 shows the pressing device in a state B, in which the second pressing jaw 2 has just touched the contact 12, but in which the two pressing jaws 1 and 2 do not yet exert any appreciable force on the contact 12.
  • the connecting rod 9 is therefore not yet deformed.
  • Fig. 3 shows the pressing device in a state C, in which the joint 10 passes through the bottom dead center 13, at which the upper end of the connecting rod 9 takes the lowest point during the crimping process.
  • a force F builds up between contact 12 and second pressing jaw 2, which in state C reaches its maximum F max .
  • the force F causes the contact 12 to be pressed at the bare wire end and, on the other hand, causes the connecting rod 9 to be elastically deformed, the largest being the deformation of the connecting rod 9 in state C of the pressing device.
  • 3 shows the deformation of the connecting rod 9 as a bending of the connecting rod 9.
  • the second press jaw 2 is detachably attached to the connecting rod 9.
  • the press is dimensioned such that the distance between the base plate 3 and the lower end of the connecting rod 9 with the press jaw 2 removed is exactly 135.78 mm, if the eccentric disc 5 passes through the bottom dead center 13.
  • FIGS. 4A-F show an example of a large number of possible embodiments of the connecting rod 9.
  • a connecting rod 9 is preferably made from one piece, but can also consist of several parts and classic springs.
  • the connecting rod 9 has at its lower and upper ends a circular opening 15 and 16, respectively, into which a pin on the second press jaw 2 (FIG. 1) and a bolt fastened on the eccentric disc 5 engage.
  • the opening 15 and the associated bolt form the first joint 10 (FIG. 1)
  • the opening 16 and the associated bolt form the second joint 11.
  • the connecting rods 9 shown in FIGS. 4A-E are designed as symmetrically constructed springs which by the force F acting on them during the crimping process.
  • the connecting rod 9 shown in FIG. 4F is designed as an asymmetrical element with a curved web 17 connecting the joints, whose bend increases under the force F acting during the crimping process.
  • R 1 denotes the distance between the center of rotation of the first joint 10 from the axis of rotation 6 of the eccentric disc 5
  • R 2 the distance between the center of rotation of the second joint 11 and the pressing surface of the second pressing jaw 2
  • L 0 the length of the connecting rod 9, ie the distance between both joints 10 and 11 in the unloaded state of the connecting rod 9, and H crimp the height of the pressed contact 12, the so-called crimp height.
  • F ( ⁇ L) of the connecting rod 9 between the force F and the change in length ⁇ L there results the maximum force, the so-called crimping force F crimp , which acts on the contact 12 in state C of the pressing device .
  • F K * ⁇ L
  • the size K denotes the spring constant of the connecting rod 9 is obtained
  • F crimp K * (R 1 + R 2 + L 0 + H crimp - D)
  • the crimp height H crimp of the pressed contact 12 thus varies between values H crimp, min and H crimp, max , for example due to a different number of strands at the wire end, then the maximum force acting during the crimping process fluctuates between the values F crimp, min and F crimp, max , which can be calculated using equation (3).
  • the strength of the force F depends on the distance D between the pressing surface of the first pressing jaw 1 (FIG. 1), on which the contact 12 rests during the crimping process, and the axis of rotation 6 of the eccentric disc 5.
  • the contact processing station is therefore preferably designed in such a way that this distance D can be changed:
  • the axis of rotation 6 of the eccentric disk 5 can be, for example, a shaft arranged on the jacket of a cylinder, which shaft can be rotated about its longitudinal axis which is fixed with respect to the base plate 3.
  • the cylinder can be rotated about its longitudinal axis by hand, but preferably by means of a program-controlled motor. In this way, the force F H, crimp associated with a predetermined crimp height H crimp can be changed within certain limits.
  • the spring constant K is, for example, 5000 N / mm.
  • the crimping process becomes more robust: fluctuations in the ambient temperature may cause variations in the distance D. In spite of this, consistently good crimping is achieved since the crimping force F crimp varies only insignificantly.
  • Fig. 6 shows an embodiment in which the connecting rod 9 is not deformed, but in the the first press jaw 1 is mounted on the base plate 3 by means of a spring 18.
  • the holding device for the wire in this case is preferably attached to the press jaw 1 so that the contact 12 and the wire during compression of the press jaw 1 during the crimping process relative to the holding device do not move.
  • FIG. 7 shows the first exemplary embodiment with a measuring system for measuring the crimping force F crimp acting on the contact 12 during the crimping process , that is the force acting on the contact 12 when the joint 10 (FIG. 3) is at bottom dead center 13 happens.
  • the contact processing station is preferably designed such that the distance D manually or motorized adjustable A second measuring system is therefore provided so that the Distance D can be determined automatically after a change.
  • the invention is not restricted to a special type of press.
  • other mechanical pressing devices for example toggle presses or linear presses be used.
  • toggle presses for example, one of the two toggles is or are Both toggle levers are designed as an elastically deformable element.
  • the contact processing station comprises a base frame 19, in which the first press jaw 1 is integrated, a body 20 which can be adjusted in height above the first press jaw 1, a rod 9a to which the second press jaw 2 is fastened, an eccentric drive 21, two toggle levers 22 and 23, a rod 24, which connects the two toggle levers 22, 23 and the eccentric drive 21, a first spring 25 and a second spring 26.
  • the guide element 4 for the vertical guidance of the rod 9a is fastened to the base frame 19.
  • the body 20 serves as a stop for the rod 9a or the second press jaw 2.
  • the base frame 19 has a stop surface 27 which cooperates with a sleeve 28 fixedly attached to the rod 9a to limit the downward movement of the rod 9a in order to prevent that hit the second press jaw 2 with full force on the first press jaw 1 and could damage it.
  • a second sleeve 29 is slidably mounted on the rod 9a.
  • One end of the first toggle lever 22 is mounted on the rod 9a, the other end on the rod 24.
  • One end of the second toggle lever 23 is mounted on the second sleeve 29, the other end on the rod 24.
  • the spring 26 pulls the rod 24 upwards in the vertical direction.
  • the pressing jaw 2 which is firmly connected to the rod 9a, is pulled upwards in the idle state until it comes to a stop on the body 20.
  • the spring 25 is arranged as an elastically deformable element between the base frame 19 and the sleeve 29. In order to be able to set the desired crimping force, the spring 25 is fastened to the base frame 19 in a manner that can be displaced manually or in a motorized manner in the vertical direction by means not shown.
  • the spring 25 can also be preloaded with an adjusting screw, not shown, for example to a force F v of 1000 N.
  • the height of the body 20 above the first press jaw 1 is adjustable so that the stroke which the second press jaw 2 carries out can be adjusted. Common values for the stroke are 30 mm or 40 mm
  • the spring 25 is missing. Instead of the spring 25, one is in the Height adjustable body is provided, on which the sleeve 29 abuts during operation.
  • the sleeve 29 is with formed a spring joint that builds up a force when the sleeve 29 up against it Body is pressed. The position of the body in the vertical direction determines the path that the Spring joint deflects during the crimping process and thus the target crimping force.
  • FIG. 9 shows a contact processing station with a linear press, one of a spindle 30 Has in the vertical direction driven, non-rotating body 31.
  • the second press jaw 2 is attached to the end of a rod 9a which is resiliently mounted on the body 31 by means of a spring 32.
  • the spring 32 can be biased to a predetermined force by means of an adjusting screw 33.
  • the spindle 30 is driven by a motor 34, with a gear 35 between the spindle 30 and the motor 34 is switched.
  • the stroke that the second press jaw 2 travels, and thus the maximum crimping force acting during the crimping process can be set via the number of revolutions of the Motors 34. Since the spring 32 from the contact 12 during the crimping process to the second press jaw 2 cushioned impact, the thread of the spindle 30 is only insignificantly loaded.
  • the two press jaws 1 and 2 are often integrated in a module that is in the press device is used. This allows a quick change, since the press jaws 1 and 2 correspond to the to be processed cable type and contact type. It is therefore also possible to have an elastic deformable element, for example a spring, to be provided within this module in order to to cause resilient mounting of the first and / or second press jaw 1, 2.
  • an elastic deformable element for example a spring
  • the base frame 19 itself can be designed as a spring.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
EP01810283A 2000-04-04 2001-03-20 Station de travail pour contacts Withdrawn EP1143579A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01810283A EP1143579A1 (fr) 2000-04-04 2001-03-20 Station de travail pour contacts

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00810295A EP1143578A1 (fr) 2000-04-04 2000-04-04 Station de travail pour contacts
EP00810295 2000-04-04
EP01810283A EP1143579A1 (fr) 2000-04-04 2001-03-20 Station de travail pour contacts

Publications (1)

Publication Number Publication Date
EP1143579A1 true EP1143579A1 (fr) 2001-10-10

Family

ID=26073847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01810283A Withdrawn EP1143579A1 (fr) 2000-04-04 2001-03-20 Station de travail pour contacts

Country Status (1)

Country Link
EP (1) EP1143579A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2378615A1 (fr) * 2010-04-13 2011-10-19 Schleuniger Holding AG Presse de sertissage
EP2490306A3 (fr) * 2011-02-21 2014-01-01 Tyco Electronics AMP GmbH Outil de sertissage
CN104158057A (zh) * 2014-08-22 2014-11-19 苏州昌飞自动化设备厂 双耳扁缆铜接头组装机的电缆卡爪下顶机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768378A (en) * 1951-04-14 1956-10-30 Zwick Nicholas Machines for attaching terminals to cords or the like
US3484922A (en) * 1967-10-30 1969-12-23 Amp Inc Crimping apparatus for coaxial terminals in strip form
DE19548534A1 (de) * 1994-12-28 1996-07-11 Yazaki Corp Vorrichtung zum Zusammenquetschen von Kontaktelement und Elektrodraht
DE19622390A1 (de) * 1995-06-15 1996-12-19 Whitaker Corp Crimppresse mit Kraftsensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768378A (en) * 1951-04-14 1956-10-30 Zwick Nicholas Machines for attaching terminals to cords or the like
US3484922A (en) * 1967-10-30 1969-12-23 Amp Inc Crimping apparatus for coaxial terminals in strip form
DE19548534A1 (de) * 1994-12-28 1996-07-11 Yazaki Corp Vorrichtung zum Zusammenquetschen von Kontaktelement und Elektrodraht
DE19622390A1 (de) * 1995-06-15 1996-12-19 Whitaker Corp Crimppresse mit Kraftsensor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2378615A1 (fr) * 2010-04-13 2011-10-19 Schleuniger Holding AG Presse de sertissage
WO2011128844A1 (fr) * 2010-04-13 2011-10-20 Schleuniger Holding Ag Presse de sertissage
CN102859812A (zh) * 2010-04-13 2013-01-02 施洛伊尼格控股有限公司 压接机
CN102859812B (zh) * 2010-04-13 2016-01-20 施洛伊尼格控股有限公司 压接机
US9300102B2 (en) 2010-04-13 2016-03-29 Schleuniger Holding Ag Crimping press
EP2490306A3 (fr) * 2011-02-21 2014-01-01 Tyco Electronics AMP GmbH Outil de sertissage
CN104158057A (zh) * 2014-08-22 2014-11-19 苏州昌飞自动化设备厂 双耳扁缆铜接头组装机的电缆卡爪下顶机构

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