US3789974A - Apparatus for transferring the blanks of knitting needles in the process of manufacture of such needles - Google Patents

Apparatus for transferring the blanks of knitting needles in the process of manufacture of such needles Download PDF

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Publication number
US3789974A
US3789974A US00213597A US3789974DA US3789974A US 3789974 A US3789974 A US 3789974A US 00213597 A US00213597 A US 00213597A US 3789974D A US3789974D A US 3789974DA US 3789974 A US3789974 A US 3789974A
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United States
Prior art keywords
jaws
blanks
stationary
blank
jaw
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Expired - Lifetime
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US00213597A
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English (en)
Inventor
A Afanasiev
A Lykov
E Fridman
A Mogilevsky
L Sokolov
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Individual
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Individual
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Publication date
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Publication of US3789974A publication Critical patent/US3789974A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G1/00—Making needles used for performing operations
    • B21G1/02—Making needles used for performing operations of needles with eyes, e.g. sewing-needles, sewing-awls
    • B21G1/04—Making needles used for performing operations of needles with eyes, e.g. sewing-needles, sewing-awls of needles specially adapted for use in machines or tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00—Making pins, nails, or the like
    • B21G3/32—Feeding material to be worked to nail or pin making machines

Definitions

  • the present invention relates to the manufacture of needles for knitting machines, and, more particularly to apparatus for transferring the blanks of such knitting needles in the process of their manufacture.
  • the present invention can be used to utmost advantage in the production of latch needles employed in automatic flat-knitting machines, or of other kinds of needles, when the process of their manufacture involves operations of processing of the body of the needle for rendering the body oval in cross-section.
  • the operation cycle of the known apparatus is prolonged by the time of the inter-operational transfers, in addition to the machining time, the time of feeding the blank to a work-performing tool and the time of returning the blank from the tool which affects the productivity of the apparatus.
  • an apparatus for transferring the blanks of knitting needles having a foot in the process of manufacture of such needles, comprising a chain conveyor, drive sprockets for the chain conveyor, one of the sprockets being a driving sprocket and the other a driven sprocket, clamping jaws having contact surfaces, said clamping jaws being mounted on said chain conveyor at uniformly spaced locations so that the contact surfaces of the clamping jaws extend parallel to the direction of movement of the chain conveyor, thereby forming a permanent base surface for blanks of knitting needles, one of said clamping jaws being spring-loaded and a second jaw being stationary, a ball accommodated in the stationary jaw in the side of the contact surface thereof, the spherical surface of the ball projecting beyond the stationary jaw, a screw mounted in the spring loaded jaw coaxially with the ball, a first stationary cam plate mounted coaxially with the driven sprocket and coacting with the ball to press the screw for opening the jaws,
  • This structure of the apparatus provides for attaining uniformity of machining of the blanks and for increased productivity, because the contact surfaces of the clamping jaws present a permanent base surface, which obviates the need in for additional feeding mechanisms that lead to wasting of additional time on feeding a blank to a tool and on returning the same in a direction perpendicular to the direction of transportation.
  • FIG. 1 is a front view of the clamping jaws constructed in accordance with the invention
  • FIG. 2 is a side view of the jaws shown in FIG. 1;
  • FIG. 3 is a cross-sectional view taken along line III- III of FIG. 2;
  • FIG. 4 illustrates the position of a needle blank, as it is carried through machining stations
  • FIG. 5 illustrates the unloading of a needle blank after it has been worked upon.
  • the needle blank transfer apparatus comprises a conveyor 1 (FIG. 1) carrying a plurality of uniformly spaced clamping jaws 2 and 3, of which the jaw 2 is the stationary jaw and is mounted on the conveyor by means of pins 4, with the other jaw 3 being springloaded.
  • the jaw 3 is mounted on a pivot pin 5 positioned centrally of the jaw 3, with both ends of the pivot pin 5 being secured to the stationary jaw 2.
  • the jaws 2 and 3 are mounted on the conveyor 1 so that contact surfaces 6 and 7, respectively, thereof are parallel to the direction of the motion of the conveyor (this direction is indicated with the arrow line A" in the drawing), in which way a permanent blank-engaging area is ensured.
  • the stationary jaw has a pocket made in the contact surface thereof, and a ball 8 is inserted into this pocket so that a part of the spherical surface thereof projects outside from the external surface of the jaw, as it can be seen in FIG. 3.
  • a set screw 9 is threaded through the 3 movable jaw 3, with its axis being aligned with that of the ball 8.
  • the ball 8 is adapted to be engaged by a stationary cam plate 10, for opening the jaws when a needle blank is to be clamped, and a blank 11 (FIG. 1) is supplied from a feeder 12 which feeds out needle blanks 11 one by one in any known way.
  • a stud 14 is mounted on the stationary jaw 2, on the side thereof having the contact surface 6.
  • the cam plate 10 is mounted coaxially with a driven sprocket wheel 15 of the conveyor 1, rotatable about an axis 16.
  • Another cam plate 17 (FIG. of a similar structure is mounted at the point where a finished blank 18 is unloaded into a screw conveyor delivery 19, rotatable about an axis 20.
  • the cam plate 17 is mounted coaxially with a driving sprocket wheel 21 of the conveyor 1, rotatable about an axis 22.
  • the clamping jaws 2 and 3 are mounted at uniformly spaced locations longitudinally of the conveyor'l, with the spacing between the jaw assemblies being determined in accordance with the operation cycle of the apparatus and with the speed of the conveyor.
  • the jaws pass along the lower, return run of the conveyor and rise about the driven sprocket wheel 15, the ball 8 received in the stationary jaw 2 and projecting therefrom engages the stationary cam plate mounted coaxially with the sprocket wheel and presses the set screw 9 threaded into the movable jaw 3, whereby the jaws open against the closing action of the spring.
  • the blank 11 projecting from the feeder l2 enters between the open jaws 2 and 3, the stud 15 engages the blank byfits foot 13, and, upon the ball 8 leaving the cam plate 10, the contact surfaces 6 and 7 of the jaws 2 and 3, respectively, close upon the blank 11 and thus clamp it to carry the blank through the successive working stations.
  • the clamped blank 11 As the clamped blank 11 (FIG. 4) is carried by the conveyor, it is subjected to several successive machining operations. For instance, it is passed through the nip of pressure rollers which compress it either in a horizontal plane or in a vertical plane to a desired crosssectional shape.
  • the now finished blank 18 is carried by the clamping jaws 2 and 3 toward the driving sprocket wheel 21.
  • the ball 8 engages the stationary cam plate 17 mounted coaxially with the driving sprocket wheel, whereby the clamping jaws 2 and 3 open, and the finished blank 18 falls by gravity into the groove of the screw conveyor delivery 19 which carries it further on.
  • the friction forces drive it into the groove of the screw conveyor, whereby it is indexed with its feet turned upwardly, in which position it can be added to a stack of finished blanks.
  • An apparatus for transferring blanks of knitting needles having a foot in the process of the manufacture of such needles comprising a chain conveyor, sprockets for the chain conveyor, one of the sprockets being a driving sprocket, and the other a driven sprocket, clamping jaws having contact surfaces, the clamping jaws being mounted on the chain conveyor at uniformly spaced locations so that the contact surfaces thereof extend parallel to the direction of movement of the chain conveyor, thereby forming a permanent base surface for blanks of knitting needles, one of the jaws being spring-loaded, and the other jaw being stationary, a ball accommodated in the stationary jaw on the side of the contact surface thereof, the spherical surface of the ball projecting beyond the stationary jaw, a screw mounted in the spring-loaded jaw coaxially with the ball, a first stationary cam plate mounted coaxially with the driven sprocket and coacting with the ball for pressing the screw for opening the jaws, a stationary feeder of blanks of knitting needles mounted over the driven

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Knitting Machines (AREA)
  • Specific Conveyance Elements (AREA)
US00213597A 1970-12-29 1971-12-29 Apparatus for transferring the blanks of knitting needles in the process of manufacture of such needles Expired - Lifetime US3789974A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1607854A SU360816A1 (ru) 1970-12-29 1970-12-29 Устройство дл подачи штучных заготовок в зону обработки

Publications (1)

Publication Number Publication Date
US3789974A true US3789974A (en) 1974-02-05

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ID=20462916

Family Applications (1)

Application Number Title Priority Date Filing Date
US00213597A Expired - Lifetime US3789974A (en) 1970-12-29 1971-12-29 Apparatus for transferring the blanks of knitting needles in the process of manufacture of such needles

Country Status (4)

Country Link
US (1) US3789974A (https=)
CS (1) CS155890B1 (https=)
GB (1) GB1357975A (https=)
SU (1) SU360816A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103252429A (zh) * 2012-07-16 2013-08-21 湖北博士隆科技有限公司 双工位封闭式铆钉机用穿越式转移装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3027896C2 (de) 1980-07-23 1984-07-05 Texas Instruments Deutschland Gmbh, 8050 Freising Vorrichtung zum Transportieren von Werkstücken durch eine Bearbeitungsanlage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103252429A (zh) * 2012-07-16 2013-08-21 湖北博士隆科技有限公司 双工位封闭式铆钉机用穿越式转移装置

Also Published As

Publication number Publication date
DE2165403A1 (de) 1972-07-27
DE2165403B2 (de) 1976-05-26
SU360816A1 (ru) 1976-06-25
GB1357975A (en) 1974-06-26
CS155890B1 (https=) 1974-06-24

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