EP1559821A1 - Machine améliorée pour tricoter en circulaire - Google Patents

Machine améliorée pour tricoter en circulaire Download PDF

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Publication number
EP1559821A1
EP1559821A1 EP04001386A EP04001386A EP1559821A1 EP 1559821 A1 EP1559821 A1 EP 1559821A1 EP 04001386 A EP04001386 A EP 04001386A EP 04001386 A EP04001386 A EP 04001386A EP 1559821 A1 EP1559821 A1 EP 1559821A1
Authority
EP
European Patent Office
Prior art keywords
sinker
drum
cam
sinkers
contact
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Withdrawn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
EP04001386A
Other languages
German (de)
English (en)
Inventor
Ping-Shih Wang
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.)
Pai Lung Machinery Mill Co Ltd
Original Assignee
Pai Lung Machinery Mill Co Ltd
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 Pai Lung Machinery Mill Co Ltd filed Critical Pai Lung Machinery Mill Co Ltd
Priority to EP04001386A priority Critical patent/EP1559821A1/fr
Publication of EP1559821A1 publication Critical patent/EP1559821A1/fr
Withdrawn legal-status Critical Current

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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
    • D04B15/06—Sinkers
    • 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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/327—Cam systems or assemblies for operating knitting instruments for stitch-length regulation
    • 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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/34—Cam systems or assemblies for operating knitting instruments for dials

Definitions

  • the present invention relates to an improved circular knitting machine that has a saddle plate with matching cams and sinkers assembled thereon in an inclined manner, and a sinker drum with a concave surface forming a continuous circular ring in the shape of a conical shallow tray to allow the cams and the sinker drum to form a concave and convex surface contact thereby to achieve a smooth match between sinkers and cams.
  • Conventional circular knitting machines generally include sinkers driven by a cam.
  • the cam has a driving path to move the sinkers to and fro to perform a knitting operation.
  • the sinker is engaged with a preset driving path as shown in FIG. 1A.
  • the lug 62 of the sinker 61 is engaged with the driving path 64 of the cam 63 so that the sinker 61 is moved according to the driving path 64 to perform the knitting operation.
  • the cam 63 is mounted horizontally on the machine deck.
  • the sinker 61 is also mounted horizontally.
  • the sinker 61 is located on a sinker drum 60 which rotates at a high speed during knitting operation, and the sinker 61 is driven by the driving path 64 to move reciprocally to and fro rapidly.
  • the sinker drum 60 rotates at high speed
  • the sinker 61 is forced outwards due to a centrifugal force, but is retained by the driving path 64 of the cam 63.
  • the lug 62 moves along the driving path 64.
  • the centrifugal force generates a great force on the sinker 61 (indicated by an arrow in FIG. 2).
  • the contact surface 66 and contact angle 67 between the driving path 64 and the lug 62 form many stress concentration points.
  • the continuous centrifugal force creates severe friction and wear. As a result, the lifetime of the sinker 61 and the cam 63 significantly decreases.
  • the cam 63 is mounted horizontally on the machine deck and the sinker 61 also is mounted horizontally.
  • the sinker drum 60 is a circular barrel with a plurality of cams 63 mounted thereon adjacent to one another in an annular fashion.
  • interference or interruption can occur with the to and fro reciprocal movements of the sinker 61.
  • the object of the invention is to provide an improved circular knitting machine that has a saddle plate with inclined holding surfaces and a sinker drum with an inclined surface so that the matching cams and sinkers are also coupled in an inclined manner.
  • the cams and the sinker drum form a concave and convex arched contact surface so that a gap is less likely to occur.
  • the sinker may be moved along the driving path more smoothly without interference or interruption.
  • the driving path provided in the invention can also reduce the centrifugal force of the sinker and prevent the lug from hitting the cam. Therefore, the service life of the sinker and cam may increase.
  • the improved circular knitting machine according to the invention includes:
  • the contact section 25 that has the driving path 21 formed thereon has a fine convex surface 23 in contact with the concave surface 52 of the conical shallow tray of the sinker drum 50 (referring to FIGS. 6 and 8) so that the convex surface 23 and the concave surface 52 form a close concave and convex contact therefore the gap between every two neighboring cams 20 may be minimized or eliminated.
  • interference or interruption on the sinker 40 may be minimized for a smooth operation.
  • the sinker 40 has a lug 41 on one end that can slide along the driving path 21 of the cam 20, and the other end wedged in the sinker trough 51 of the sinker drum 50.
  • the sinker 40 is movable because of the lug 41 driven by the driving path 21. As the cam 20 is inclined, the sinker 40 also is inclined at an angle.
  • the saddle plate 10 and the sinker drum 50 are installed in an inclined manner.
  • the cam 20 and the sinker 40 also are mounted thereon in an inclined manner. This is the main feature of the invention to achieve the desired results (referring to FIGS. 9 and 10).
  • the sinker 40 When the sinker drum 50 rotates at high speed, the sinker 40 generates a centrifugal force F (indicated by an arrow in the drawings).
  • the centrifugal force F applied on the sinker 40 at comprising a horizontal centrifugal component force F1 and a vertical centrifugal component force F2 formed on the inclined surface.
  • the sinker 40 has a gravity force W which also effects a horizontal gravity component force W1 and a vertical gravity component force W2 on the inclined surface.
  • the horizontal gravity component force W1 is opposite to the horizontal centrifugal component force F1 and thus can offset a portion of the horizontal centrifugal component force F1.
  • the impact force of the lug 41 on the driving path 21 resulting from the centrifugal force F may be reduced. This not only makes moving the lug 41 in the driving path 21 smoother but increases the service life of the sinker 40 and cam 20.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP04001386A 2004-01-22 2004-01-22 Machine améliorée pour tricoter en circulaire Withdrawn EP1559821A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04001386A EP1559821A1 (fr) 2004-01-22 2004-01-22 Machine améliorée pour tricoter en circulaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04001386A EP1559821A1 (fr) 2004-01-22 2004-01-22 Machine améliorée pour tricoter en circulaire

Publications (1)

Publication Number Publication Date
EP1559821A1 true EP1559821A1 (fr) 2005-08-03

Family

ID=34639370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04001386A Withdrawn EP1559821A1 (fr) 2004-01-22 2004-01-22 Machine améliorée pour tricoter en circulaire

Country Status (1)

Country Link
EP (1) EP1559821A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877206A (zh) * 2012-10-16 2013-01-16 无锡市佳龙纺织机械有限公司 用于针织大圆机上的沉降片结构
CN105624904A (zh) * 2016-04-07 2016-06-01 福建泉州凹凸精密机械有限公司 一种针织圆机的三角安装结构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639659A1 (fr) * 1988-11-29 1990-06-01 Lu Sa Ho Procede de tricotage
EP0402034A1 (fr) * 1989-05-31 1990-12-12 Precision Fukuhara Works, Ltd Métier à tricoter circulaire pour tricoter un tricot double
EP0478855A1 (fr) * 1990-10-04 1992-04-08 Precision Fukuhara Works, Ltd Procédé pour tricoter une étoffe et métier à tricoter pour sa mise en oeuvre

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639659A1 (fr) * 1988-11-29 1990-06-01 Lu Sa Ho Procede de tricotage
EP0402034A1 (fr) * 1989-05-31 1990-12-12 Precision Fukuhara Works, Ltd Métier à tricoter circulaire pour tricoter un tricot double
EP0478855A1 (fr) * 1990-10-04 1992-04-08 Precision Fukuhara Works, Ltd Procédé pour tricoter une étoffe et métier à tricoter pour sa mise en oeuvre

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877206A (zh) * 2012-10-16 2013-01-16 无锡市佳龙纺织机械有限公司 用于针织大圆机上的沉降片结构
CN105624904A (zh) * 2016-04-07 2016-06-01 福建泉州凹凸精密机械有限公司 一种针织圆机的三角安装结构
CN105624904B (zh) * 2016-04-07 2017-05-24 福建泉州凹凸精密机械有限公司 一种针织圆机的三角安装结构

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