US3690533A - Feeding apparatus for wire and like elongated material - Google Patents

Feeding apparatus for wire and like elongated material Download PDF

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Publication number
US3690533A
US3690533A US158694A US3690533DA US3690533A US 3690533 A US3690533 A US 3690533A US 158694 A US158694 A US 158694A US 3690533D A US3690533D A US 3690533DA US 3690533 A US3690533 A US 3690533A
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US
United States
Prior art keywords
slide
jaw
cam
axis
crank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US158694A
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English (en)
Inventor
Otto Bihler
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.)
Otto Bihler KG
Original Assignee
Otto Bihler KG
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 Otto Bihler KG filed Critical Otto Bihler KG
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Publication of US3690533A publication Critical patent/US3690533A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F99/00—Subject matter not provided for in other groups of this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus

Definitions

  • the force required for closing the jaws is relatively high, and is transmitted tothe slide in the known devices in such a manner as to increase the contact pressure between the slide and the guides which hold the slide in the desired path during its reciprocating movement. Wear of the engaged guiding surfaces is an important factor in determining the useful life of the known feeding arrangements.
  • a primary object of this invention is the provision of a feeding apparatus of the type described which is free from the shortcomings of the known devices and has a long and troublefree life.
  • FIG. 1 shows a feeding apparatus of the invention in top plan view
  • FIG. 2 illustrates the apparatus of FIG. 1 in sideelevational section on its vertical plane of symmetry.
  • the disc 12 functions as the web of a crank drive also including a crank pin 18 whose axis is parallel to and offset from the axis of the drive shaft 16.
  • a tubular elongated connecting rod 29 is'provided with a fixed bottom end bearing 9 which engages the pin 18 for angular movement of the rod 29 about the axis of the pin 18.
  • a rubber sleeve 10 is interposed between the bearing shell and the body of the bottom end bearing 9 to permit very limited movement of the crank pin 18 while the connecting rod 29 stands still.
  • the top end of the connecting rod 29 is secured to the slide 1 by a hinge arrangement which permits the rod 29 to pivot about yet another axis parallel to the afore-mentioned axes of the shaft 16 and the crank pin 18.
  • the hinge arrangement includes a bracket 6 which is secured to the slide 1 by a hinge pin 11 and may swing in an opening 20 of the slide 1 while threadedly attached to the connecting rod 29.
  • the path of the slide 1 which is determined by the guide bars 41, 42 and rectilinear, is parallel to a line or plane drawn through the axes of the shaft 16, the crank pin 18, and the hinge pin 1 1.
  • a fixed clamping jaw 38 on the slide 1 cooperates with a movable jaw 32 pivotally mounted on the slide 1 to define a passage 2 whose width is narrowest in the illustrated position of the apparatusand slightly narrower than the thickness of the material that it is desired to feed, the jaws illustrated being particularly suitable for flat wire or strip of metal or other slightly resilient stock.
  • the operating mechanism which holds the jaw 32 in the illustrated position closely adjacent the fixed jaw 38 while the slide moves away from the-disc '12, and holds the jaw 32 sufficiently remote fromthe jaw 38 during movement of the slide in the opposite direction to release the material being fed includes a radial cam 23 fixedly mounted on the crank web or disc 12 in coaxial relationship to the crank pin 18 by a flanged sleeve 21 fixed on the crank pin 18.
  • An elongated, round, operating bar 28 is longitudinally slidably received in the bore of the tubular connecting rod 29.
  • a fork 37 fixedly attached to one terminal portion of the operating bar 28 carries a cam follower roller 24 which is held in rolling contact with the cam face of the cam 23 by a helical compression spring 27 coiled about the afore-mentioned terminal portion of the bar 28 and abuttingly interposed between respective surfaces of the bottom end bearing 9 and the fork 37.
  • the bottom end bearing 9 and the top end of the connecting rod 29 are on a common horizontal level in the illustrated apparatus, and that the terms bottom end and top en are merely chosen by analogy to automotive applications to designate the ends of a connecting rod near and remote from a crank pin respectively.
  • the other terminal portion of the operating bar 28 carries a wedge-shaped cam 4 which slides on a guide face of the bracket 6.
  • the underside of the movable jaw 32 is provided with a recess 39 which conforrningly receives a bearing ball 31.
  • the downward movement of the ball 31 out of the recess 39 is limited by a metal strip 33 provided with an opening 5 only slightly smaller than the largest cross section of the ball 31, but sufiicient to permit engagement of the ball with the face of the cam 4 obliquely inclined relative to the direction of elongation of the bar 28 in all operative positions of the cam.
  • a strong leaf spring 30 has one end fixedly attached to the bracket 6 while the free end abuts against the jaw 32 and biases the jaw away from the fixed jaw 38, thereby holding the ball 31 engaged with the earn 4.
  • the crank pin 18 is fixedly mounted on a slide 40 received in dovetail engagement between two segmentshaped guide plates 15.
  • the guide plates are fastened to the disc 12 by clamping screws 35, 36 which pass through arcuate slots in the guide plates and therefore permit limited angular adjustment of the guide plates.
  • the position of the slide 40 in the dovetail slot extending along a diameter of the disc 12 between the guide plates 15 is determined by a threaded spindle l7 engaging a threaded bore in the slide 40 and rotatably secured against axial movement in a yoke 19 which connects the guide plates 15 at one end of the dovetail slot.
  • the cam 23, as is best seen in FIG. 1, has a cam face which extends in a closed loop about the axis of the crank pin 18.
  • the cam face has two almost semicircular sections of different radius connected by steep, short flanks.
  • the slide 1 is in its end position most remote from the axis of the drive shaft 16, and the cam follower roller 24 holds the operating bar 28 against the force of the springs 27 and 30 (FIG. 2) in such a position that the ball 31 engages the highest point on theoblique face of the cam 4, thereby holding the movable jaw 32 closely adjacent the jaw 38.
  • the cam follower roller 24 holds the operating bar 28 against the force of the springs 27 and 30 (FIG. 2) in such a position that the ball 31 engages the highest point on theoblique face of the cam 4, thereby holding the movable jaw 32 closely adjacent the jaw 38.
  • passage 2 is at its smallest cross section.
  • the cam follower 24 abuts against the face portion of the cam 23 of larger radius.
  • the slide 1 When the disc 12 has turned through an angle of 180, the slide 1 is nearest the shaft 16, the cam follower roller 24 returns to the cam face portion of greater radius on the cam 23, and the jaws 32, 38 are closed about the non-illustrated wire or strip. During subsequent return of the apparatus to the illustrated position, the wire or strip is taken along and fed forward, that is, to the left as viewed in the drawing.
  • the slide 1 moves in its rectilinear path only to a minimal extent while the disc 12 moves into and out of the position shown in the drawing.
  • the jaws .32, 38 are being opened and closed during the feeding cycle .while the slide 1 almost stands still. If so desired, stops (not illustrated) may be provided to engage the slide 1 immediately before it would normally reach the end positions of its stroke of which only one is seen in the drawing.
  • the sleeve 10 hasbeen shown to be interposed between the connecting rod 29 and the crank pin 18, it may obviously be provided anywhere else in the motion transmitting train connecting the crank web 12 and the slide 1 and constituted essentially by the crank pin 18, the connecting rod 29, and the hinge arrangement including the bracket 6 and the hinge pin 11, without significantly affecting its operation.
  • a feeding apparatus for wire and like elongated material comprising, in combination:
  • moving means for reciprocating said slide member in said path between two terminal positions, said moving means including 1. a crank web member,
  • crank pin member on said crank web member, said crank pin member having a second axis spaced from said first axis
  • hinge means securing the other end portion of said connecting rod to said slide member for pivoting movement about a third axis
  • cam follower means operatively connected to one longitudinally terminal portion of said operating member and. engaging said cam member
  • cam member has a cam face extending in a closed loop, two portions of said cam face being substantially semicircular about said second axis and of different radius.
  • cam follower means include a cam follower member mounted on said one terminal portion and yieldably resilient means biasing said cam follower member toward engagement with said cam face.
  • crank pin member, said connecting rod, and said hinge means jointly constitute members of a motion transmitting train connecting said crank web member to said slide member, said train further including a resilient buffer interposed between two members of said train for permitting limited movement of said crank web member while said slide member stands still.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
US158694A 1970-07-08 1971-07-01 Feeding apparatus for wire and like elongated material Expired - Lifetime US3690533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702033940 DE2033940A1 (ar) 1970-07-08 1970-07-08

Publications (1)

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US3690533A true US3690533A (en) 1972-09-12

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ID=5776186

Family Applications (1)

Application Number Title Priority Date Filing Date
US158694A Expired - Lifetime US3690533A (en) 1970-07-08 1971-07-01 Feeding apparatus for wire and like elongated material

Country Status (4)

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US (1) US3690533A (ar)
JP (1) JPS5248386B1 (ar)
DE (1) DE2033940A1 (ar)
FR (1) FR2101612A5 (ar)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333593A (en) * 1977-02-15 1982-06-08 Otto Bihler Feeder for feeding stock to machines or devices
US4596174A (en) * 1984-12-28 1986-06-24 Gti Corporation Wire handling and cutting apparatus
WO2012160552A1 (en) * 2011-05-24 2012-11-29 Goldschmidt, Emmanuel Apparatus and method for pushing and pulling of cables

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2741149C2 (de) * 1977-09-13 1986-08-14 Bihler, Otto, 8959 Trauchgau Antriebsvorrichtung für Draht- bzw. Bandzuführeinrichtungen an Stanz-Biegeautomaten
DE2850944C2 (de) * 1978-11-24 1987-01-15 Bihler, Otto, 8959 Trauchgau Materialeinzugsvorrichtung an Draht- und/oder Bandbearbeitungsmaschinen
DE2856560A1 (de) * 1978-12-28 1980-07-10 Otto Bihler Vorschubvorrichtung fuer den materialeinzug fuer maschinen oder vorrichtungen
JPS5616298U (ar) * 1979-07-11 1981-02-12

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696380A (en) * 1948-11-02 1954-12-07 Denison Eng Co Strip feeding mechanism
US3486676A (en) * 1968-03-25 1969-12-30 Eilert F Bruns Slide feed

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696380A (en) * 1948-11-02 1954-12-07 Denison Eng Co Strip feeding mechanism
US3486676A (en) * 1968-03-25 1969-12-30 Eilert F Bruns Slide feed

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333593A (en) * 1977-02-15 1982-06-08 Otto Bihler Feeder for feeding stock to machines or devices
US4596174A (en) * 1984-12-28 1986-06-24 Gti Corporation Wire handling and cutting apparatus
WO2012160552A1 (en) * 2011-05-24 2012-11-29 Goldschmidt, Emmanuel Apparatus and method for pushing and pulling of cables

Also Published As

Publication number Publication date
DE2033940A1 (ar) 1972-04-27
FR2101612A5 (ar) 1972-03-31
JPS5248386B1 (ar) 1977-12-09

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