EP0648581A1 - Machine automatique à poser des crampons - Google Patents

Machine automatique à poser des crampons Download PDF

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Publication number
EP0648581A1
EP0648581A1 EP93116798A EP93116798A EP0648581A1 EP 0648581 A1 EP0648581 A1 EP 0648581A1 EP 93116798 A EP93116798 A EP 93116798A EP 93116798 A EP93116798 A EP 93116798A EP 0648581 A1 EP0648581 A1 EP 0648581A1
Authority
EP
European Patent Office
Prior art keywords
extractor
fork
pliers
frame
clamping machine
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Withdrawn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
EP93116798A
Other languages
German (de)
English (en)
Inventor
Giuseppe De Rossi
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.)
Revelin Evaristo & Figli SNC
Original Assignee
Revelin Evaristo & Figli SNC
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
Application filed by Revelin Evaristo & Figli SNC filed Critical Revelin Evaristo & Figli SNC
Priority to EP93116798A priority Critical patent/EP0648581A1/fr
Publication of EP0648581A1 publication Critical patent/EP0648581A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01R43/0428—Power-driven hand crimping tools

Definitions

  • the invention is an automatic clamping machine.
  • Clamping machines are known, by means of which particular packaging jobs are carried out, for example in the field of packing, upholstery, metal structural works and in the manufacture of stress bars for reinforced concrete and alike.
  • the manufacture of stress bars for reinforced concrete is carried out with a known type of clamping machine, basically constituted by a frame equipped with a handgrip and a case containing a certain quantity of metal clamps. These clamps are extracted one after the other and fastened by means of pliers projecting from the front part of the frame itself.
  • the pliers consist of two jaws, opposed to each other, between which the metal clamp to be fastened is placed: the external perimeter of the clamp coincides with the internal perimeter of the pliers.
  • the pliers open again and during this phase they extract a new clamp from the case and put it between the jaws, ready to clamp it as soon as they are closed by means of the push button or of the control lever.
  • the pliers can fasten the clamp around bodies the section of which has a shape similar to that of the closed pliers and having a perimeter equal to the internal perimeter of the clamp when the pliers are closed. This represents a considerable inconvenience, since the user, when he has to clamp elements having different measures, is forced to employ and therefore to buy more than one clamping machine, each one provided with pliers with different dimensions and making use of clamps having different dimensions, too.
  • clamping machines that are known at the moment have another disadvantage: they are characterized by the necessity to feed the new clamp manually after the previous one has been closed, so that the operator must use both hands. Further, this kind of clamping machines cannot work in continuous cycle.
  • the present invention is aimed at eliminating the above mentioned inconveniences.
  • the main objective of the invention is to carry out a clamping machine that, by means of single closing pliers, should allow the user to fasten clamps around one or more elements having different dimensions.
  • Another objective is that this clamping machine should fasten one or more elements having different dimensions with clamps of the same size.
  • clamping machine should also be capable of operating in continuous automatic cycle.
  • the extractor consists of a fork having a fixed, C-shaped profile that slides horizontally on the upper part of the frame.
  • the closing pliers are composed of a pair of jaws hinged to the frame and opposed to each other at the extractor sides.
  • the rear ends of the pliers jaws are connected, by means of a mobile pin, with a fork that is fixed to the end of the stem of a pneumatic cylinder that with its movement causes the opening and closing of the jaws.
  • the mobile pin is provided with a toothed element that rotates when it bucks against reaction elements.
  • Said toothed element is also provided with thrusting parts, through which it is lifted or lowered when it rotates due to the bucking against the reaction elements.
  • the toothed element when lifted, it disengages the pin from the coupling with the extractor and, on the contrary, when it is lowered it couples the pin with the extractor.
  • it causes the stop of the extractor in the reached position and in the second case it causes the movement of the extractor when the pliers are opened or closed.
  • this machine being designed for operation in continuous automatic cycle, makes for a greater working speed and therefore for reduced production costs.
  • the clamping machine object of the present invention is represented in Fig. 1 and 2, where it is indicated in its whole with 1 and is composed of a clamping unit, indicated in its whole with 7, which is composed of the extractor 8 and of the pliers 9.
  • This clamping unit projects from the front part of a frame 2 that is equipped in its lower part with a handgrip 3 and a housing 4, suitable for a case 5 containing a certain quantity of stacked clamps 6.
  • Said extractor 8 and pliers 9 can be seen in detail in Fig. 2, where the clamping machine 1 is shown without the case 10, visible in Fig. 1, which protects the leverage 11 that operates the pliers 9.
  • the extractor consists of a C-shaped fork 81, obtained in the front part of a plane slide 82, coupled on the upper part of frame 2.
  • Said plane slide 82 adheres to frame 2 by means of a covering plate 83, which is provided with side slide guides 85 and with holes 84 for passing the fastening screws through to frame 2.
  • the plane slide 82 has in its rear part a hole 86, in which a hinge pin 87 is inserted.
  • This hinge pin 87 is part of a fork 88 fixed to the stem 89 of a pneumatic cylinder 90 that operates the pliers.
  • the fork 88 shown in clearer detail in Fig. 6 and 7, it is fixed to the stem 89 of the pneumatic cylinder operating the pliers. It is possible to observe that the hinge pin 87 passes through the fork and also through the rear ends 12 of the jaws 13 that constitute the pliers 9 and belong to the leverage operating the pliers, indicated in its whole with 11 and visible in detail in Fig. 4 and 5, 8 and 9.
  • Said hinge pin 87 is fixed in its upper part, as can be seen in detail in Fig. 10 and 11, to a toothed element that adheres to the fork 88 by means of a spring 30.
  • Said toothed element 14 can rotate only in the preferably clockwise direction indicated by the arrow 15, since its teeth 16 cannot rotate in the opposite direction owing to the presence of the stop element 17 fixed to the fork 88.
  • Fig. 10 and Fig. 11, as well as Fig. 7 and Fig. 6, show that the adherence of the toothed element 14 to the fork 88 takes place through the interposition of thrusting parts consisting of a pair of balls 18, each one of which is positioned in a housing 19 obtained in the fork 88 and thrusts against the toothed element 14, either acting against its surface 40, as shown in Fig. 11, or interfering in the holes 29 or 30 obtained in the surface 40 itself, as shown in Fig. 10.
  • the fork 88 has a bucking tooth 21, which, as shown in Fig. 3, acts against the terminal part 42 of the plane slide 82, which feeds the clamp 25 for the extraction when the pneumatic cylinder 90 is operated.
  • the operation of the clamping machine starts from Fig. 4, where the fork 81 of the extractor 8 holds a clamp 25, while the jaws 13 of pliers 9 are closed.
  • valve 28 By means of the control lever 27, visible in Fig. 2, the valve 28 is operated, which feeds the positive chamber of the pneumatic cylinder 90 and makes the stem 89 of the pneumatic cylinder itself advance in the direction 26, as indicated in Fig. 4.
  • the clamping machine When the pneumatic cylinder 90 reaches its positive end of stroke, the clamping machine is positioned as shown in Fig. 5, that is, with the clamp 25 fixed to the fork 81 of the extractor 8 and held between the jaws 13 of the pliers 9, that are open and therefore ready to fasten the clamp 25 itself.
  • the hinge pin 87 takes its end 31 out of the hole 86 made in the extractor 8, which remains in the reached position and holds the clamp 25 in the clamping position between the pliers jaws.
  • the fastening of the clamp takes place when, as it can be observed in Fig. 8, the stem 89 of the pneumatic cylinder 90 goes back in the direction 35, that is opposite to the previous advancement direction 26.
  • the fastening of the clamp 25 ends when the stem 89 of the pneumatic cylinder 90 reaches the negative end of stroke, position in which, as shown in Fig. 9, the clamp 25 is completely fastened around an element 36 by the action of the jaws 13 of the pliers 9, that close completely.
  • valve 28 that feeds the positive chamber of the pneumatic cylinder 90 is operated again by means of the lever 27, so that the stem 89 of the cylinder advances in the direction 26 causing the opening of the jaws 13 of the pliers 9, as shown in Fig. 5.
  • the hinge pin 37 is thus moved downwards by the thrust of the spring 30 and it reaches a position equal to that represented in Fig. 7, where its end 31 goes into the hole 86 made on the plate 82 that constitutes the extractor 8.
  • the negative chamber of the pneumatic cylinder 90 is put under pressure again, so that the stem 89 goes back in the direction 35 carrying the jaws 13 of the pliers 9 and the extractor 8 in a back position, as shown in Fig. 4.
  • its bucking tooth 21 serves to keep thrusting the extractor 8 in the direction 26 after the reaction element 33, acting against the tooth 32 of the toothed element 14, has lifted it vertically disengaging the end 31 of the hinge pin 87 from the hole 86 that couples it with the extractor 8.
  • the clamping machine object of the present invention reaches the fixed aims.
  • the clamping cycle is continuous owing to the operation of the lever 27 that by means of a distribution valve 28 feeds alternately and continuously the positive and the negative chamber of the pneumatic cylinder 90.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
EP93116798A 1993-10-18 1993-10-18 Machine automatique à poser des crampons Withdrawn EP0648581A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93116798A EP0648581A1 (fr) 1993-10-18 1993-10-18 Machine automatique à poser des crampons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93116798A EP0648581A1 (fr) 1993-10-18 1993-10-18 Machine automatique à poser des crampons

Publications (1)

Publication Number Publication Date
EP0648581A1 true EP0648581A1 (fr) 1995-04-19

Family

ID=8213348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93116798A Withdrawn EP0648581A1 (fr) 1993-10-18 1993-10-18 Machine automatique à poser des crampons

Country Status (1)

Country Link
EP (1) EP0648581A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220102927A1 (en) * 2020-09-30 2022-03-31 Gulfstream Aerospace Corporation Device and method for actuating a tool and method for making a device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205690A (en) * 1939-05-24 1940-06-25 Gen Motors Corp Hog ring clinching tool
DE1181116B (de) * 1962-01-24 1964-11-05 Fr D Agrafage Ind Iasofragrafi Pneumatisch betaetigtes Geraet zum Anbringen von C-foermigen Klammern um das zusammen-gedrehte oder -geraffte Ende von Beuteln oder Saecken
US3287955A (en) * 1965-04-20 1966-11-29 Winslow Product Engineering Co Tool for setting rings
US3830089A (en) * 1973-10-01 1974-08-20 Cooper Ind Inc Ring clinching tool
FR2231480A1 (en) * 1973-06-04 1974-12-27 Sofragraf Tool fastening wire clips on sack necks - helical grooves on jaws overlap clip ends to form coil
EP0274710A1 (fr) * 1986-12-18 1988-07-20 Raffaele Agostini Pince motorisée portable pour le serrage de cavaliers ou similaires

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205690A (en) * 1939-05-24 1940-06-25 Gen Motors Corp Hog ring clinching tool
DE1181116B (de) * 1962-01-24 1964-11-05 Fr D Agrafage Ind Iasofragrafi Pneumatisch betaetigtes Geraet zum Anbringen von C-foermigen Klammern um das zusammen-gedrehte oder -geraffte Ende von Beuteln oder Saecken
US3287955A (en) * 1965-04-20 1966-11-29 Winslow Product Engineering Co Tool for setting rings
FR2231480A1 (en) * 1973-06-04 1974-12-27 Sofragraf Tool fastening wire clips on sack necks - helical grooves on jaws overlap clip ends to form coil
US3830089A (en) * 1973-10-01 1974-08-20 Cooper Ind Inc Ring clinching tool
EP0274710A1 (fr) * 1986-12-18 1988-07-20 Raffaele Agostini Pince motorisée portable pour le serrage de cavaliers ou similaires

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220102927A1 (en) * 2020-09-30 2022-03-31 Gulfstream Aerospace Corporation Device and method for actuating a tool and method for making a device
US12040582B2 (en) * 2020-09-30 2024-07-16 Gulfstream Aerospace Corporation Piston device for actuating a tool

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