Device for loop-forming, sinker means and method for loop forming

Patent metadata

Field	Value
Publication number	US-11414797-B2
Application number	US-201917287848-A
Country	US
Kind code	B2
Filing date	Oct 9, 2019
Priority date	Oct 23, 2018
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A device (1), a sinker arrangement (5) and a method for loop-forming are described. The device (1) may include a cylinder (2) with first grooves (3) for needles (4) accommodated in a first groove (3), whereby the needles (4) include a loop forming section, and a sinker ring (27) with second grooves (15) for the sinker arrangement (5). The sinker arrangement (5) may include an actuating section (12) and a loop forming section (7). The loop forming section (7) includes an opening (11), and the sinker arrangements (5) are accommodated in one single second groove (15). The opening (11) may be delimited in the width direction (x) by two side faces (23) and the loop forming section of the needle (4) is movably disposed between the two side faces (23) of the opening (11).

First claim

The invention claimed is:

1. A device ( 1 ) for loop-forming, comprising:
a cylinder ( 2 ) comprising at least one first groove ( 3 ) for accommodating at least one needle ( 4 );
a sinker ring ( 27 ) with at least one second groove ( 15 ) for accommodating at least one moveable sinker means ( 5 );
at least one moveable sinker means ( 5 ), which comprises an actuating section ( 12 ) for actuation of an entirety of the at least one sinker means in a reciprocating manner and a loop forming section ( 7 ) for knocking over and holding down loops of yarn formed by knitting;
wherein the loop forming section ( 7 ) of the at least one moveable sinker means ( 5 ) comprises an opening ( 11 ), which moves together with the at least one moveable sinker means ( 5 );
and wherein the at least one moveable sinker means ( 5 ) is at least partially accommodated in the at least one second groove ( 15 );
at least one needle ( 4 ) which is at least partially accommodated in a first groove ( 3 ), wherein the at least one needle ( 4 ) comprises a loop forming section that comprises a part of a longitudinal extension of the at least one needle ( 4 );
wherein the opening ( 11 ) is delimited in a width direction (x) of the at least one moveable sinker means ( 5 ) by two side faces ( 23 ) and the loop forming section of the at least one needle ( 4 ) is at least in part movably disposed between the two side faces ( 23 ) of the opening ( 11 ).

2. The device ( 1 ) for loop-forming according to claim 1 ,
wherein the at least one second groove ( 15 ) is at most 3.5 times deeper than its width.

3. The device ( 1 ) for loop-forming according to claim 1 ,
wherein the at least one moveable sinker means ( 5 ) comprises two distinct sinkers ( 16 )
and at least a first of the two distinct sinkers ( 16 ) comprises at least one curved section.

4. The device ( 1 ) for loop-forming according to claim 1 ,
wherein the at least one moveable sinker means ( 5 ) is a single-element sinker means ( 19 ) which only consists of a single piece.

5. The device ( 1 ) for loop-forming according to claim 4 ,
wherein the actuating section ( 12 ) of the single-element sinker means ( 19 ) includes at least a section of its extension in a length direction (y) of the single-element sinker means ( 19 ) which is at most 3.5 times taller than its width.

6. The device ( 1 ) for loop-forming according to claim 5 ,
further comprising at least one third groove ( 21 ) of the cylinder ( 2 ) for at least partly accommodating the loop-forming section ( 7 ) of the single-element sinker means ( 19 ), wherein the at least one third groove ( 21 ) is at most 3.5 times deeper than its width.

7. The device ( 1 ) for loop-forming according to claim 6 ,
wherein a bottom ( 28 ) of the at least one second groove ( 15 ) is-positioned at a same height or higher than a bottom ( 22 ) of the at least one third groove ( 21 ) in a direction of a central axis of the cylinder.

8. The device ( 1 ) for loop-forming according to claim 6 , further comprising a member ( 6 ) having the at least one third groove ( 21 ), wherein the member ( 6 ) forms a part of the cylinder ( 2 ) and includes at least one inward edge ( 20 ), whereby the at least one inward edge ( 20 ) forms an acute angle with a bottom ( 22 ) of the at least one third groove ( 21 ) in a plane defined by a length (y) and a height direction (z) of the at least one moveable sinker means ( 5 ), wherein the at least one inward edge ( 20 ) points towards a central axis of the cylinder.

9. The device ( 1 ) for loop-forming according to claim 4 ,
wherein a front section ( 14 ) and the loop forming section ( 7 ) of the single-element sinker means ( 19 ) do not contact the cylinder ( 2 ).

10. A sinker means ( 5 ) for knocking over and holding down loops, comprising:
an actuating section ( 12 ) for actuation of the sinker means, wherein the actuating section ( 12 ) is configured for being at least partially accommodated in one second groove ( 15 ) of a sinker ring ( 27 ); and
a loop forming section ( 7 ) integrally connected with the actuating section so as to be moveable therewith for knocking over and holding down loops of yarn formed by knitting,
wherein the loop forming section ( 7 ) comprises an opening ( 11 );

wherein the opening ( 11 ) is delimited in a width direction (x) of the sinker means ( 5 ) by two side faces ( 23 ) each integrally connected with the actuating section so as to be moveable therewith for movably disposing at least a part of a longitudinal extension of a loop-forming section of a needle ( 4 ) between the two side faces ( 23 ).

11. The sinker means ( 5 ) according to claim 10 ,
wherein the actuating section ( 12 ) extends along a length direction of the sinker means ( 5 ) and is configured for being driven by one single cam track of a knitting machine,
and wherein the actuating section ( 12 ) is configured for driving both of the two side faces ( 23 ) of the opening ( 11 ).

12. The sinker means ( 5 ) according to claim 10 ,
further comprising two distinct sinkers ( 16 )
and at least a first of the two distinct sinkers ( 16 ) comprises at least one curved section.

13. The sinker means ( 5 ) according to claim 12 ,
wherein the first of the two distinct sinkers ( 16 ) has a front section ( 14 ) which is wider than the loop forming section ( 7 ), and
wherein the loop forming section ( 7 ) is wider than a middle section ( 13 ) which is between the loop forming section ( 7 ) and the actuating section ( 12 ) and the actuating section ( 12 ) is wider than the middle section ( 13 ) and wider than the loop forming section ( 7 ).

14. The sinker means ( 5 ) according to claim 10 ,
wherein the sinker means ( 5 ) is a single-element sinker means ( 19 ) which consists only of a single piece,
and wherein the opening ( 11 ) is delimited in a length direction (y) towards a front section ( 14 ) of the sinker means.

15. The sinker means ( 5 ) according claim 10 ,
wherein the loop forming section ( 7 ) is provided with a knocking-over edge ( 8 ),
wherein the actuating section ( 12 ) comprises a butt ( 10 ) and two shaft sections which surround the butt ( 10 ),
wherein at least one of the two shaft sections has an upper edge ( 26 ),
and wherein the upper edge ( 26 ) of the at least one shaft section is positioned above the knocking-over edge ( 8 ) in a height direction (z) of the sinker means ( 5 ).

16. A method for loop forming, comprising:
actuating at least one moveable sinker means ( 5 ) in at least one second groove ( 15 ) of a sinker ring ( 27 ) via an actuating section ( 12 ) of the at least one moveable sinker means ( 5 ) such that an entirety of the at least one moveable sinker means ( 5 ) is moved in a reciprocating manner;
wherein the at least one moveable sinker means ( 5 ) is at least partially accommodated in the at least one second groove ( 15 ) during a knitting process;
wherein the at least one moveable sinker means ( 5 ) is provided with a loop forming section ( 7 ), which holds down and knocks over loops of yarn formed by knitting;
wherein the loop forming section ( 7 ) of the at least one moveable sinker means ( 5 ) comprises an opening ( 11 ) that moves together with the at least one moveable sinker means;
actuating at least one needle ( 4 ), wherein a loop forming section of a longitudinal extension thereof participates in a loop forming process;
wherein the opening ( 11 ) is delimited in a width direction (x) of the at least one moveable sinker means ( 5 ) by two side faces ( 23 ) and the at least one needle ( 4 ) is moved at least in a height direction (z) of

Assignees

• Groz Beckert Kg
• Santoni & C Spa

Inventors

• Wörnle Martin
• Andreoli Marco
• Rizzi Stefano

Classifications

• D04B15/06 Primary

  Sinkers · CPC title

• D04B15/18

  Dials · CPC title

• D04B35/32

  Devices for removing lint or fluff · CPC title

• D04B15/14

  Needle cylinders · CPC title