EP1469111B1 - A circular knitting machine equipped with a knitting timing switching device - Google Patents

A circular knitting machine equipped with a knitting timing switching device Download PDF

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Publication number
EP1469111B1
EP1469111B1 EP04252069A EP04252069A EP1469111B1 EP 1469111 B1 EP1469111 B1 EP 1469111B1 EP 04252069 A EP04252069 A EP 04252069A EP 04252069 A EP04252069 A EP 04252069A EP 1469111 B1 EP1469111 B1 EP 1469111B1
Authority
EP
European Patent Office
Prior art keywords
needles
stitch
butts
cams
cylinder
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
EP04252069A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1469111A1 (en
Inventor
Yasushi Onishi
Hiroyuki Watanabe
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.)
Precision Fukuhara Works Ltd
Original Assignee
Precision Fukuhara Works 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 Precision Fukuhara Works Ltd filed Critical Precision Fukuhara Works Ltd
Publication of EP1469111A1 publication Critical patent/EP1469111A1/en
Application granted granted Critical
Publication of EP1469111B1 publication Critical patent/EP1469111B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/06—Circular knitting machines with independently-movable needles with needle cylinder and dial for ribbed goods
    • D04B9/065—Circular knitting machines with independently-movable needles with needle cylinder and dial for ribbed goods with stitch-length regulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/02—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/50—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins
    • B65B11/52—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins one sheet being rendered plastic, e.g. by heating, and forced by fluid pressure, e.g. vacuum, into engagement with the other sheet and contents, e.g. skin-, blister-, or bubble- packaging
    • 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
    • D04B15/322—Cam systems or assemblies for operating knitting instruments in circular knitting machines with needle cylinder and dial
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/06—Circular knitting machines with independently-movable needles with needle cylinder and dial for ribbed goods
    • D04B9/08—Circular knitting machines with independently-movable needles with needle cylinder and dial for ribbed goods for interlock goods

Definitions

  • the present invention relates to a double knit circular knitting machine having a cylinder and a dial and further equipped with a device for switching the stitch cam timings.
  • the cam timings for the cylinder stitch cam and the dial stitch cam are switched between the synchronous timing and the delayed timing as appropriate according to the type of knit.
  • the lowest points of the cylinder and dial stitches i.e., the points at which the needles are most retreated from the top of the cylinder and the points at which the needles are most retreated from the periphery of the dial, are on the same straight line.
  • the delayed timing they are on different lines from each other.
  • stitch cams can also move vertically, so that the amount of the retraction of the needles can be changed to obtain the appropriate amount of yarn and size of the stitch.
  • a stitch cam is fastened with a set screw after manually adjusting it to a desired position.
  • the position of a stitch cam is precision adjusted automatically by a step motor.
  • the former invention entails delicate manual operation and requires skill.
  • the latter invention involves a precision position-adjustment mechanism, which leads to increased manufacturing cost. Both inventions employ only one type of stitch cam that is moved and adjusted.
  • the objective of the present invention is to provide a reliable and low cost device for switching the timings by selectively using at least two types of stitch cams as appropriate.
  • the device of the present invention it is possible not only to switch stitch cams between the synchronous timing and the delayed timing, but also to provide at least two cams of the same type and switch between them as appropriate. More specifically, it is possible to switch between at least two stitch cams for the synchronous timing as well as between at least two stitch cams for the delayed timing. This makes it possible to knit a fabric having different stitch amounts. Such a device is also covered by the present invention.
  • An aspect of the present invention is a double knit circular knitting machine according to claim 1 or 2. More particularly, this machine has a device for switching stitch cams between those for the synchronous timing and those for the delayed timing, comprising a rotary cylinder that slidably houses cylinder needles, control cams that control the movement of the cylinder needles, a rotary dial that is above the cylinder and slidably houses dial needles, and control cams that control the movement of the dial needles, in which at least either the cylinder needles or the dial needles are provided with at least two types of butts, one for synchronous timing stitch cams and the other for the delayed timing stitch cams, and at least either the cylinder needle control cams or the dial needle control cams are provided with synchronous timing stitch cams and delayed timing stitch cams that oppose at least either type of knitting needles and are arranged so as to selectively engage with either of the butts.
  • An aspect of the present invention is a double knit circular knitting machine according to claim 3. More particularly, this machine has a device for switching between at least two stitch cams for the synchronous timing, comprising a rotary cylinder that slidably houses cylinder needles, control cams that control the movement of the cylinder needles, a rotary dial that is above the cylinder and slidably houses dial needles, and control cams that control the movement of the dial needles, in which at least either the cylinder needles or the dial needles are provided with at least two types of butts for synchronous timing stitch cams, and at least either the cylinder needle control cams or the dial needle control cams are provided with at least two types of synchronous timing stitch cams that oppose the knitting needles having the at least two types of butts and are arranged so as to selectively engage with either of the butts.
  • An aspect of the present invention is a double knit circular knitting machine according to claim 4. More particularly, this machine has a device for switching between at least two stitch cams for the delayed timing, comprising a rotary cylinder that slidably houses cylinder needles, control cams that control the movement of the cylinder needles, a rotary dial that is above the cylinder and slidably houses dial needles, and control cams that controls the dial needles, in which at least either the cylinder needles or the dial needles are provided with at least two types of butts for delayed timing stitch cams, and at least either the cylinder needle control cams or the dial needle control cams are provided with at least two types of delayed timing stitch cams that oppose the knitting needles having at least two types of butts and are arranged so as to selectively engage with either of the butts.
  • This mechanism comprises a selecting cam that is carried on at least either of the cylinder and the dial, a lever having a butt that can contact the selecting cam and a linkage to a stitch cam, and two types of stitch cams that can move by engaging with this linkage.
  • the selecting cam comprises a raising cam and a lowering cam and is mounted in such a way that it can project outwardly with respect to the rotary cylinder.
  • the selecting cam is operated, for example, by an electromagnetic actuator.
  • the linkage comprises two pin grooves extending in opposite directions. Portions of the two types of stitch cams fit into these grooves in such a way that when one of the two types of stitch cams retreats, the other sticks out.
  • FIG. 1 (a) is a sectional view and (b) is a front view of a rotary cylinder 10, both showing a selecting cam 11 and its surroundings.
  • a cylinder needle 23 is housed in such a way that it can slide freely inside a needle groove 22 that extends axially.
  • a dial needle 24, which cooperates with the cylinder needle 23, is arranged horizontally in such a way that it can slide freely inside a needle groove 26 of the dial 25.
  • the cylinder needle 23 is operated and controlled in an ordinary method by a cam 13 that is fastened on a cylinder cam holder 20.
  • the dial needle 24 is operated and controlled in an ordinary method by a cam 28 that is fastened on a dial cam holder 27.
  • the selecting cam 11 comprises a lowering cam 11 a on the left-hand side of the rotary cylinder and a raising cam 11b on the right-hand side of the rotary cylinder.
  • the positions of the lowering cam and the raising cam can be reversed.
  • an electromagnetic actuator 12 is provided on the back of each cam.
  • the electromagnetic actuator is controlled by a knit-pattern controlling device (not shown).
  • FIG. 2 shows two types of stitch cams.
  • A shows a stitch cam 13a for synchronous timing
  • (B) shows a stitch cam 13b for delayed timing.
  • (a) is a front view
  • (b) is a side view.
  • cam races 14a and 14b are provided respectively.
  • shafts 15a and 15b are fastened in such a way that they protrude from the back surfaces.
  • pins 16a and 16b are provided respectively.
  • FIG. 3 shows a lever 17, which is a selecting means that controls the projection and retraction of the stitch cams.
  • (a) is a side view
  • (b) is a front view.
  • a butt 18 is positioned in the middle of the lever. When the butt 18 touches the selecting cam 11, the lever respectively moves up and down.
  • This lever is provided with link grooves 19a, 19b for pins. These grooves are used for projection and retraction of the stitch cam 13a for synchronous timing and the stitch cam 13b for delayed timing.
  • FIG. 4 illustrates the operation of the raising cam 11b.
  • (a) is a front view of a cam holder 20.
  • (b) and (c) are sectional views of the cam holder for illustrating the movement of the stitch cams.
  • raising cam 11b acts on butt 18 of lever 17
  • lever 17 ascends ( FIG. 4 (b) ).
  • the ascent of the lever causes link grooves 19a, 19b to act on pins 16a, 16b of the stitch cams, retracting the upper cam 13a and projecting the lower cam 13b ( FIG. 4 (c) ).
  • FIG. 5 illustrates the operation of the lowering cam 11a.
  • (a) is a front view of a cam holder 20.
  • (b) and (c) are sectional views of the cam holder for illustrating the movement of the stitch cams.
  • lever 17 descends ( FIG. 5 (b) ).
  • the descent of the lever causes link grooves 19a, 19b to act on pins 16a, 16b of the stitch cams, projecting the upper cam 13a and retracting the lower cam 13b ( FIG. 5 (c) ).
  • Notches are on the back of the lever 17, and a detent mechanism 21 respectively engages the notches for releasably holding the lever in the raised and lowered positions.
  • the stitch cam(s) of the present invention can also move up and down to vary the retraction of the needle, obtain the appropriate yam amount and vary the stitch sizes.
  • the present invention provides a cam set piece 25a having a cavity with substantially the same length as the vertical length L of the cam 13a, as shown in FIG. 6 .
  • the cam 13a is mounted in such a way that it is moveably held by the cam set piece 25a, so that the cam 13a can move between positions in which it is respectively projecting from the cavity and retracted into the cavity.
  • the cam set piece 25a is provided with a through-hole for shaft 15a of the cam 13a to penetrate, and the cam 13a is mounted in such a way that it is capable of projecting and retracting under the control of the lever 17, as described above.
  • the cam holder is provided with two stitch-amount-adjusters that are arranged one above the other.
  • One is for the synchronous timing stitch cam and the other is for the delayed timing stitch cam.
  • the two adjusters have substantially the same construction.
  • a pin 27a is embedded in such a way that it extends approximately halfway into the thickness of the cam set piece 25a.
  • the protrusion of the pin 27a engages in a spiral groove 26c of the stitch-amount adjuster.
  • the stitch-amount adjuster 26a is rotated, the pin 27a moves up and down along the spiral groove 26c.
  • the cam set piece 25a and the stitch cam 13a also move up and down.
  • the cylindrical periphery of the stitch adjuster 26a is provided with a notched surface 26e.
  • the stitch-amount adjuster 26a is releasably rotatably fastened using a pin 29a that is urged by a spring 28a so that the pin 29a movably engages the notched surface 26e in a detent-like manner.
  • This is a device for switching between two stitch cams for delayed timing.
  • independent adjusters are used for each of the stitch cams, such stitch cams being a synchronous timing stitch cam and an delayed timing stitch cam, two synchronous timing stitch cams, or two delayed timing stitch cams. Therefore, an appropriate stitch amount can be set for each, and the adjusters can be manually operated. Because the selection of stitch cams can be controlled by a selecting cam carried by the cylinder, one selecting mechanism is sufficient for a knitting machine.
  • each race can be provided with an appropriate action line along which the needle moves.
  • stitch angles and widths can be designed independently of the knitting timing. It is also possible to employ closed cams, which contribute to the making of high quality fabrics.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Knitting Machines (AREA)
EP04252069A 2003-04-17 2004-04-07 A circular knitting machine equipped with a knitting timing switching device Expired - Lifetime EP1469111B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003112517A JP2004316026A (ja) 2003-04-17 2003-04-17 編成タイミング切換装置を備えた丸編機
JP2003112517 2003-04-17

Publications (2)

Publication Number Publication Date
EP1469111A1 EP1469111A1 (en) 2004-10-20
EP1469111B1 true EP1469111B1 (en) 2009-07-01

Family

ID=32906055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04252069A Expired - Lifetime EP1469111B1 (en) 2003-04-17 2004-04-07 A circular knitting machine equipped with a knitting timing switching device

Country Status (8)

Country Link
EP (1) EP1469111B1 (zh)
JP (1) JP2004316026A (zh)
KR (1) KR101036862B1 (zh)
CN (1) CN100472005C (zh)
AT (1) ATE435322T1 (zh)
DE (1) DE602004021741D1 (zh)
ES (1) ES2327841T3 (zh)
TW (1) TWI328058B (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1398722B1 (it) * 2010-02-22 2013-03-18 Pilotelli Macchine Tessili Srl "macchina da maglieria con canali di comando degli aghi tra loro differenziati"
CN103510267B (zh) * 2013-10-23 2015-10-21 汕头市喜达兴实业有限公司 一种双面上下电脑提花圆机
CN104452088A (zh) * 2014-12-19 2015-03-25 张家港润山针织机械有限公司 多功能码座
CN106948074B (zh) * 2017-04-24 2019-04-09 石狮市宝翔针织机械有限公司 具有预成圈功能的五功位圆纬机编织结构
CN109112711B (zh) * 2018-10-11 2024-04-19 泉州全能智控机械研究所有限公司 可分段压针且压针相对位置可调的菱角、下盘提花编织机构及针织圆纬机
CN111501180B (zh) * 2020-05-06 2021-07-30 绍兴鸿骏机械有限公司 一种针织圆机
CN112708996B (zh) * 2020-12-21 2024-08-09 泉州恒毅机械有限公司 一种具有新型导针片的对筒机及对筒机的编织方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1079169A (en) * 1965-07-17 1967-08-16 Wildt Mellor Bromley Ltd Improvements in circular knitting machines
IT1293789B1 (it) * 1997-07-25 1999-03-10 Santoni Srl Dispositivo per la selezione degli aghi, in particolare per la selezione degli aghi del piatto in macchine circolari per

Also Published As

Publication number Publication date
TWI328058B (en) 2010-08-01
EP1469111A1 (en) 2004-10-20
KR101036862B1 (ko) 2011-05-25
JP2004316026A (ja) 2004-11-11
KR20040090916A (ko) 2004-10-27
ATE435322T1 (de) 2009-07-15
ES2327841T3 (es) 2009-11-04
DE602004021741D1 (de) 2009-08-13
CN100472005C (zh) 2009-03-25
TW200422457A (en) 2004-11-01
CN1537987A (zh) 2004-10-20

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