US3750426A - Pushing device in double cylinder circular knitting machines - Google Patents

Pushing device in double cylinder circular knitting machines Download PDF

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Publication number
US3750426A
US3750426A US00188693A US3750426DA US3750426A US 3750426 A US3750426 A US 3750426A US 00188693 A US00188693 A US 00188693A US 3750426D A US3750426D A US 3750426DA US 3750426 A US3750426 A US 3750426A
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US
United States
Prior art keywords
rods
cylinder
piston
needle cylinders
manufacture
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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
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US00188693A
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English (en)
Inventor
F Lonati
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Individual
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Individual
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Publication date
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Publication of US3750426A publication Critical patent/US3750426A/en
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/88—Take-up or draw-off devices for knitting products

Definitions

  • Pushing device in double-cylinder circular knitting machines comprising a vertical cylinder, coaxially fixed above the two needle cylinders, a piston slideably mounted within said cylinder, and means for hydraulically feeding said cylinder.
  • a pair of vertical rods, placed at a short distance from each other, are coupled to piston so as to rotate around its axis, said rods passing through respective ,passages perforated within a body, rigidly fastened to the needle cylinders, and supporting beneath them a member arranged to engage (by means of points) with the articles under manufacture.
  • the main object of the present invention is that of obviating the abovementioned disadvantages by providing apushing device of rational structure and easy manoeuvrability, which reliably avoids the danger of twisting of the articles under manufacture, and is of simple construction.
  • a further important object of the invention is that of providing a pushing device by means of which the manufactured articles are unloaded in a reliable and regular manner.
  • a pushing device for articles under manufacture on double cylinder circular knitting machines comprising a substantially vertical cylinder fixed coaxially above the two needle cylinders, a piston slideably mounted in said cylinder and means for hydraulically feeding said cylinder, said device being characterized in that a pair of substantially vertical rods placed a short distance one from the other is coupled to said piston so that they rotate about its axis and pass through respective passages in a body rigid with said needle cylinders, and lowerly support the means which engage with the articles under manufacture.
  • the pushing device comprises a cylinder 1 of considerable length fixed coaxially above the needle cylinders 2 and 3Q'More precisely the cylinder 1 is fixed, for example by screwing, to a collar 4 provided with lugs 4a by which it is fixed to a plate or support structure 5 forming part of the fixed structure of the machine.
  • a piston 6 provided with a lipped gasket 7 is slideably mounted in the cylinder 1 and lowerly coupled to two rods 8 disposed vertically a short distance one from the other and symmetrically with respect to the axis of the cylinder 1. More precisely the rods 8 are fixed to a disc 9 provided with a shank 9a which is attached coaxially to the piston with the interposing of a ball bearing 10. This latter is detained on the piston 6 by means of a plate 11. In this manner the unit comprising the rods 8 and disc 9 with its corresponding shank 94 can rotate about the axis of the piston 6.
  • rods 8 support, by way of a disc 12, a truncated conical body 13 disposed with its wider end downwards and provided there with points 14 adapted to engage with the articles under manufacture.
  • the body 13 is rigid with the rods 8 and rotates together with them.
  • the rods 8 slide through corresponding holes in a sleeve 15 rotatably mounted in the collar 4.
  • Lipped gaskets 16 are provided at the holes of the sleeve 15, whereas between said sleeve and the collar 4 there is a rolling bearing 17 of the seal type.
  • Weights 19 for increasing the tension force may be inserted in the cylinder 1, above the piston 6.
  • the cylinder 1 is upperly closed by means of a cover 20.
  • the unit comprising the truncated conical body 13, rods 8, piston 6 and it required the weights [9 placed above this latter is made to descend downwards under theaction of its own weight so as to put the articles under manufacture into a state of tension by engagement with the points 14 Said unit is raised by feeding the compressed fluid, for example compressed air, through the duct 18 into the cylinder 1.
  • the compressed air cannot flow out downwards because of the seal formed by the bearings 17 and gaskets 16, thus the piston 6 is made to rise together with the truncated conical body 13.
  • Rotation of the needle cylinders-2 and 3 causes rota-- tion, by way of the disc 21, of the rods 8 and therefore of the body 13 rigid with it, whereas the piston 6 is not dragged into rotation because of the presence of the bearing 10.
  • a substantially vertical fluid operated cylinder arranged fixedly on said support structure, a piston slidable inside said fluid operated cylinder, two pushing rods arranged parallel to each other and symmetrically spaced with respect to the rotational axis of said needle cylinders, said rods being rotatably connected at one end to said piston and being provided at the other end with a fabric engaging body for engaging and tensioning the fabric during manufacture, and guiding means for said rods including a bearing arranged on said support structure below said fluid operated cylinder and having a central body provided with passages for guiding said rods and a peripheral ring portion fixed to said support structure, said guiding means furtherincluding a disc rigid with the upper of said needle cylinders and provided with through passages for said rods arranged symmetrically to said axis of said needle cylinders, thereby to cause the said rods to rotate together with said needle cylinders during axial movement of said rods provided by said s

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00188693A 1970-10-21 1971-10-12 Pushing device in double cylinder circular knitting machines Expired - Lifetime US3750426A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT721870 1970-10-21

Publications (1)

Publication Number Publication Date
US3750426A true US3750426A (en) 1973-08-07

Family

ID=11124807

Family Applications (1)

Application Number Title Priority Date Filing Date
US00188693A Expired - Lifetime US3750426A (en) 1970-10-21 1971-10-12 Pushing device in double cylinder circular knitting machines

Country Status (5)

Country Link
US (1) US3750426A (de)
CS (1) CS158568B2 (de)
DE (1) DE2150995C3 (de)
FR (1) FR2111416A5 (de)
GB (1) GB1367292A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829180A1 (de) * 1977-07-14 1979-01-25 Lonati Cost Mecc Warenabzugsvorrichtung an einer doppelzylinder-rundstrickmaschine
US4945734A (en) * 1988-09-26 1990-08-07 Nagata Seiki Kabushiki Kaisha Fabric tensioning device in a double cylinder circular knitting machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB526283A (en) * 1939-03-11 1940-09-13 Stibbe G & Co Ltd Improvements in or relating to circular knitting machines
US2694304A (en) * 1950-03-16 1954-11-16 Burlington Mills Corp Automatic draw-off device for circular knitting machines
US3253429A (en) * 1963-02-07 1966-05-31 Scott & Williams Inc Knitting machine
US3277672A (en) * 1963-11-26 1966-10-11 Jr Thomas Anderson Oliver Circular knitting machines
US3306080A (en) * 1963-10-22 1967-02-28 Rossler Kurt Device for removing and inverting hose-like knitted goods on circular knitting machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB526283A (en) * 1939-03-11 1940-09-13 Stibbe G & Co Ltd Improvements in or relating to circular knitting machines
US2694304A (en) * 1950-03-16 1954-11-16 Burlington Mills Corp Automatic draw-off device for circular knitting machines
US3253429A (en) * 1963-02-07 1966-05-31 Scott & Williams Inc Knitting machine
US3306080A (en) * 1963-10-22 1967-02-28 Rossler Kurt Device for removing and inverting hose-like knitted goods on circular knitting machines
US3277672A (en) * 1963-11-26 1966-10-11 Jr Thomas Anderson Oliver Circular knitting machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829180A1 (de) * 1977-07-14 1979-01-25 Lonati Cost Mecc Warenabzugsvorrichtung an einer doppelzylinder-rundstrickmaschine
US4407145A (en) * 1977-07-14 1983-10-04 Lonati S.P.A. Knitwork drawing device in a double cylinder circular knitting machine
US4516410A (en) * 1977-07-14 1985-05-14 Lonati S.P.A. Knitwork drawing device in a double cylinder circular knitting machine
US4945734A (en) * 1988-09-26 1990-08-07 Nagata Seiki Kabushiki Kaisha Fabric tensioning device in a double cylinder circular knitting machine

Also Published As

Publication number Publication date
DE2150995B2 (de) 1978-08-24
DE2150995C3 (de) 1979-04-19
DE2150995A1 (de) 1972-04-27
FR2111416A5 (de) 1972-06-02
GB1367292A (en) 1974-09-18
CS158568B2 (de) 1974-11-25

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