EP2392710A1 - Métier à mailles cueillies - Google Patents

Métier à mailles cueillies Download PDF

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Publication number
EP2392710A1
EP2392710A1 EP09834315A EP09834315A EP2392710A1 EP 2392710 A1 EP2392710 A1 EP 2392710A1 EP 09834315 A EP09834315 A EP 09834315A EP 09834315 A EP09834315 A EP 09834315A EP 2392710 A1 EP2392710 A1 EP 2392710A1
Authority
EP
European Patent Office
Prior art keywords
cam
inclined plane
knitting
knitting operation
needle
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.)
Granted
Application number
EP09834315A
Other languages
German (de)
English (en)
Other versions
EP2392710B1 (fr
EP2392710A4 (fr
Inventor
Hirotoshi Yamano
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.)
Shima Seiki Mfg Ltd
Original Assignee
Shima Seiki Mfg Ltd
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Publication date
Application filed by Shima Seiki Mfg Ltd filed Critical Shima Seiki Mfg Ltd
Publication of EP2392710A1 publication Critical patent/EP2392710A1/fr
Publication of EP2392710A4 publication Critical patent/EP2392710A4/fr
Application granted granted Critical
Publication of EP2392710B1 publication Critical patent/EP2392710B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • 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
    • D04B15/36—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines

Definitions

  • the present invention relates to a flat knitting machine for driving knitting needles arranged in columns in needle beds to carry out a knitting operation.
  • a flat knitting machine is a device including needle beds and a carriage that reciprocates in a longitudinal direction of the needle beds to knit a knitted fabric by advancing and withdrawing a plurality of knitting needles arranged in parallel in the needle beds in a longitudinal direction of a needle groove.
  • the knitting operation of the knitting needles includes knit, tuck, and miss as three basics, and is controlled by operating a plurality of butts, arranged in each of the knitting needles, with a cam system arranged in the carriage.
  • Fig. 1 is a schematic explanatory view showing a correspondence state of a knitting needle 7 and a cam system in a case where knit is selected for the knitting operation in a conventional cam system.
  • Fig. 1 for the sake of convenience of the explanation, only a needle raising cam 2, a bridge cam 3, and a stitch cam 4 of the cam system are illustrated, and the knitting needle 7 viewed from a direction different from the actual arrangement direction is shown.
  • the knitting needle 7 normally includes a needle main body 71 with a hook (not shown), a needle jack 72, a select jack 73, and a selector 74.
  • the needle jack 72 includes a knitting operation butt 70, and when a cam system, to be described later, acts on the knitting operation butt 70, the needle jack 72 advances and withdraws in a needle bed gap 0 direction and as a result the needle main body 71 advances and withdraws in the needle bed gap 0 direction.
  • the knitting operation butt 70 of the knitting needle 7 in which knit is selected for the knitting operation follows a route indicated with a chain double-dashed line arrow in Fig. 1 .
  • the knitting operation butt 70 passes a thin-walled portion 43 of the stitch cam 4 on the left side in the plane of drawing, and is pushed up toward the needle bed gap 0 by a rising inclined plane 8 of the needle raising cam 2 with the movement of the carriage.
  • the knitting operation butt 70 is pushed down to the opposite side of the needle bed gap 0 by a lowering inclined plane 9 including a first inclined plane 91 of the bridge cam 3 and a second inclined plane 92 of the stitch cam 4.
  • the stitch cam 4 is configured to be slidable in the direction along the second inclined plane 92, and changes the-position of the lower end of the second inclined plane 92 by sliding to adjust the drawing amount of the knitting needle 7.
  • a gap with a width greater than the length of the knitting operation butt 70 is sometimes formed between the rising inclined plane 8 and the lowering inclined plane 9 in a certain type of flat knitting machine.
  • a wide gap is formed.
  • the rising inclined plane 8 is positioned distant from the lowering inclined plane 9 to adjust a timing of moving both a needle main body and a slider in a compound needle (see for example, Patent Document 2).
  • the inclination angle of the rising inclined plane 8 is made gradual with respect to the inclination angle of the lowering inclined plane 9 to alleviate an impact when the knitting operation butt 70 and the rising inclined plane 8 come into contact and to reduce wear of the knitting operation butt 70 and the rising inclined plane 8 by such contact.
  • the present invention has been made in view of the above situations, and an object thereof is to provide a flat knitting machine capable of suppressing the vibration of the knitting operation butt when the knitting operation butt comes into contact with the lowering inclined plane.
  • the present invention is a flat knitting machine provided with a cam system including a cam plate, a needle raising cam, a bridge cam, and a stitch cam.
  • the cam plate configures one surface side of a carriage that reciprocates in a longitudinal direction of a needle bed in which a plurality of knitting needles are arranged in parallel.
  • the needle raising cam is a substantially hill-shaped member arranged projecting out from the cam plate and including a rising inclined plane that acts on a lower end of a knitting operation butt arranged in each of the knitting needles to advance the knitting needle toward the needle bed gap on an upper end side of the butt.
  • the bridge cam is a member arranged projecting out from the cam plate and includes a first inclined plane that configures one part of a lowering inclined plane that acts on the upper end of the knitting operation butt to withdraw the knitting needle to a side opposite to the needle bed gap.
  • the stitch cam is a member arranged projecting out from the cam plate in a pair on left and right of the needle raising cam, and includes a second inclined plane that configures a remaining portion of the lowering inclined plane for determining a maximum drawing amount of the knitting needle.
  • the flat knitting machine of the present invention having such a configuration further includes a pair of left and right in-and-out cams arranged in the cam plate between the rising inclined plane and the lowering inclined plane at both sides of the needle raising cam, and configured to freely go in and out in a direction intersecting a plane of the cam plate.
  • the in-and-out cam is in an in-state so as not to inhibit the movement of the knitting operation butt on a side where the knitting operation butt is raised by the rising inclined plane, and is in an out-state so as to make an up and down vibration margin of the knitting operation butt small at a portion facing the lower end of the knitting operation butt on a side where the knitting operation butt is lowered by the lowering inclined plane.
  • the in-and-out cam merely needs to be able to freely go in and out with respect to the cam plate, and the configuration thereof is not particularly limited.
  • the in-and-out cam may be configured to freely go in and out in a direction orthogonal to the surface of the cam plate, and the in-and-out cam may be driven with electromagnetic drive means such as a solenoid or mechanical drive means such as a motor.
  • electromagnetic drive means such as a solenoid or mechanical drive means such as a motor.
  • the configuration in which in and out of the in-and-out cam can be controlled without using the drive means dedicated to the in-and-out cam includes the following.
  • the in-and-out cam is a substantially plate-shaped member that lies along the lowering inclined plane.
  • the in-and-out cam has a configuration in which an upper end side of the in-and-out cam is axially supported so that a lower end side of the in-and-out cam can oscillate in an in-out direction, and the lower end side of the in-and-out cam is pushed in a direction of projecting out from the cam plate by an elastic body arranged between the cam plate and the in-and-out cam.
  • the stitch cam is preferably configured as below with respect to the in-and-out cam having the above configuration.
  • the stitch cam includes a cam main body with the second inclined plane, and a receiving cam, coupled to a lower end side of the cam main body, for preventing excessive lowering of the knitting operation butt lowered along the lowering inclined plane, the stitch cam being configured to be slidable in a direction along the second inclined plane.
  • the in-and-out cam is pushed to the in-state by one part of the receiving cam according to a slide position of the stitch cam.
  • the lower end of the knitting operation butt is guided by the in-and-out cam when the knitting operation butt of the knitting needle is lowered by the bridge cam and the stitch cam, and hence the vibration of the knitting operation butt in the up and down direction of the cam system can be suppressed.
  • a knitted fabric with a beautiful finish can be knitted since the knitting operation of the knitting needle is stabilized even in high speed knitting.
  • the in-and-out cam is axially supported so that the other end of the in-and-out cam can freely oscillate, and the other end side can be pushed in the projecting direction by the elastic body, so that the in and out of the in-and-out cam can be controlled without arranging the electromagnetic drive means with respect to the in-and-out cam.
  • the in-and-out cam is in an in-state by pushing the in-and-out cam toward the cam plate with the knitting operation butt on the side where the rising inclined plane acts on the knitting operation butt.
  • the inclined plane is preferably formed in the in-and-out cam so that the knitting operation butt rides on without being stopped by the in-and-out cam when the knitting operation butt comes into contact with the in-and-out cam. Furthermore, the lower end of the knitting operation butt that jumped when brought into contact with the lowering inclined plane can be supported with the in-and-out cam from below since the in-and-out cam is in an out-state by the elastic body in the side where the lowering inclined plane acts on the knitting operation butt.
  • the switch between the in-state and the out-state of the in-and-out cam can be controlled without additionally arranging a drive source for pushing the in-and-out cam.
  • the knitting operation butt and the in-and-out cam can be prevented from coming directly into contact, and the possibility of damage of both members can be reduced on the side where the rising inclined plane acts on the knitting operation butt.
  • a flat knitting machine of the present invention has characteristics in including an in-and-out cam, which is not arranged in a conventional cam system, and the configurations other than the in-and-out cam are substantially the same as the conventional cam system already described with reference to Fig. 1 . Therefore, in the following embodiments, the reference numerals same as Fig. 1 are denoted for the members same as in the conventional cam system to omit the descriptions thereof, and the points different from the conventional cam system will be mainly described.
  • Fig. 2 is a schematic explanatory view showing an arrangement state of an in-and-out cam 1 in a cam system according to the embodiment.
  • a partial cross-sectional view of a cam plate 100 at a position where the in-and-out cam 1 is arranged is shown in the vicinity of a stitch cam 4.
  • a chain double-dashed line in the partial cross-sectional view indicates the position of the height of the knitting operation butt 70.
  • Fig. 3 is a three-plane view of the in-and-out cam 1 on the left side in the plane of drawing shown in Fig.
  • the in-and-out cam 1 on the right side in the plane of drawing of Fig. 2 has a bilaterally symmetric shape of the in-and-out cam of Fig. 3 .
  • the cam system of the present invention includes a pair of in-and-out cams 1 fitted into the recess formed in the cam plate 100 at the position of the gap formed between the rising inclined plane 8 and the lowering inclined plane 9 (first inclined plane 91 and second inclined plane 92).
  • the in-and-out cam 1 is a substantially plate-shaped member that includes an oscillation shaft is formed on an upper end side and a spring seat 1g formed on a rear surface on a lower end side.
  • a plurality of surfaces 11 to 16 are formed on the front surface side of the in-and-out cam 1, that is, the side facing the knitting operation butt 70 of the knitting needle 7.
  • the in-and-out cam 1 includes on the side surface thereof a guide inclined plane 10 from the position of the upper end of the surface 11 to the position of the lower end of the surface 14.
  • the surface 15 of the in-and-out cam 1 is a surface that determines the upper limit of the projecting amount of the in-and-out cam 1 by being brought into contact with a thin-walled portion 22 of the needle raising cam 2, to be described later.
  • the three surfaces including the surface 15, the surface 14, and the surface 12 become substantially parallel to the cam plate 100.
  • the surface 12 With respect to the heights of such surfaces 12, 14, 15, the surface 12 is the highest and becomes lower in the order of the surface 14 and the surface 15 for the reasons described later.
  • the surface 16 adjacent on the other end side of the in-and-out cam 1 with respect to the surface 15 lowers to the rear surface side toward the other end.
  • the surface 11 and the surface 13 are surfaces adjacent in the left and right direction of the cam system with respect to the surfaces 12 and 14, and become lower to the rear surface side toward the projecting portion of the oscillation shaft 1s from the surfaces 12, 14.
  • the in-and-out cam 1 When the in-and-out cam 1 is arranged in the recess of the cam plate 100, one end side of the in-and-out cam 1 is axially supported by the cam plate 100 with the oscillation shaft 1s so that the other end side can oscillate.
  • a spring (elastic body) 19 is arranged between the spring seat 1g of the in-and-out cam 1 and the cam plate 100, and the other end side of the in-and-out cam 1 is constantly biased in the direction of projecting out from the cam plate 100 and brought into contact with the thin-walled portion 22 at the surface 15.
  • the in-and-out cam 1 arranged in such a manner is compactly arranged without moving the positions of the cams 2, 3 in the conventional cam system in a space surrounded by the cam plate 100, the needle raising cam 2, and the bridge cam 3.
  • the stitch cam 4 is the same as the conventional art in that it is provided with a cam main body 41 including the second inclined plane 92 that configures the lowering inclined plane 9, a receiving cam 42 formed at the lower end side of the cam main body 41, and a thin-walled portion 43 for connecting the cam main body 41 and the receiving cam 42.
  • the receiving cam 42 projects out toward the needle raising cam 2. Therefore, the thin-walled portion 22 for accommodating the overhang portion 420 of the receiving cam 42 is formed at a skirt portion of the needle raising cam 2 that is substantially hill shaped.
  • the thin-walled portion 22 is formed by cutting out the back surface side (far side in the plane of drawing) of the needle raising cam 2.
  • a trajectory of the knitting operation butt 70 when driving the knitting needles to perform knit for the knitting operation by the in-and-out cam 1, the needle raising cam 2, the bridge cam 3, and the stitch cam 4 having the configurations described above will be described based on Fig. 2 .
  • the stitch cam 4 on the left side in the plane of drawing rises along the second inclined plane 92, and the thin-walled portion 43 is arranged in the track of the knitting operation butt 70.
  • the overhang portion 420 of the stitch cam 4, that is, one part of the receiving cam 42 pushes the surface 16 of the in-and-out cam 1 toward the cam plate 100 and the other end of the in-and-out cam 1 is sunk into the recess of the cam plate 100.
  • the overhang portion 420 pushes the surface 15 of the in-and-out cam 15, and withdraws the surface 14 of the in-and-out cam 1 toward the cam plate 100 from the position of the height of the knitting operation butt 70 indicated with a chain double-dashed line.
  • the height of the surface 15 of the in-and-out cam 1 is a height determined by the extent the in-and-out cam 1 sinks, and the height of the surface 14 is a height enabling withdraw from the position of the chain double-dashed line when the in-and-out cam 1 sinks.
  • the knitting operation butt 70 introduced to the needle raising cam 2 passes through the thin-walled portion 43 of the stitch cam 4, and then passes the position of the surfaces 14, 13 of the in-and-out cam 1 in in-state without coming into contact with the in-and-out cam 1, comes into contact with the rising inclined plane 8 and rises toward the needle bed gap direction.
  • the knitting operation butt 70 passes the position of the vertex of the needle raising cam 2, comes into contact with the first inclined plane 91 (lowering inclined plane 9) of the bridge cam 3 and lowers in the direction opposite to the needle bed gap.
  • the stitch cam 4 lowers in the direction along the second inclined plane 92 so that the position of the lower end of the second inclined plane 92, that is, the position of the lower end of the lowering inclined plane 9 becomes the desired position before the knitting operation butt 70 comes into contact with the lowering inclined plane 9.
  • the pull-down amount of the knitting operation butt 70 that is, the drawing amount of the knitting needle is determined from the position of the lower end of the second inclined plane 92.
  • the overhang portion 420 of the receiving cam 42 of the stitch cam 4 is at the position of not acting on the surface 16 of the in-and-out cam 1, and hence the in-and-out cam 1 is pushed in the direction of moving away from the bottom surface of the recess of the cam plate 100 by the elastic force of the spring 19 and is stopped at the thin-walled portion 22 of the needle raising cam 2 at the portion of the surface 15.
  • the guide inclined plane 10 of the in-and-out cam 1 in out-state is arranged at a position facing the lowering inclined plane 9 (see in-and-out cam 1 on the right side of Fig. 2 ). Therefore, the knitting operation butt 70 is stopped at the guide inclined plan 10 and is lowered along the lowering inclined plane 9 without vibrating even if the knitting operation butt 70 jumps in the downward direction of the stitch cam 4 when the knitting operation butt 70 comes into contact with the first inclined plane 91.
  • the guide inclined plane 10 at the relevant position is the highest portion and thus can reliably stop the knitting operation butt 70.
  • the knitting operation butt 70 tends to jump in the downward direction of the stitch cam 4 also at the boundary of the first inclined plane 91 and the second inclined plane 92, but in such a case as well, the knitting operation butt 70 is stopped at the guide inclined plane 10. Accordingly, the knitting operation butt 70 is constantly stopped at the guide inclined plane 10 at the position where the knitting operation butt 70 is likely to jump to the downward direction of the stitch cam 4, whereby the degree of drawing of the knitting yarn is stabilized even if the speed of the carriage is increased, and a knitted fabric of satisfactory finish can be knitted.
  • the knitting operation butt 70 When the carriage is moved after the knitting needle is manually operated in maintenance or the like, the knitting operation butt 70 sometimes comes into contact with the in-and-out cam 1 in a state of being lower than the position of the upper end of the guide inclined plane 10.
  • the knitting operation butt 70 may come into contact with the in-and-out cam 1 at the height of the surface 11 or the height of the surface 13 of the in-and-out cam 1 in Fig. 2 .
  • the knitting operation butt 70 rides on the surface 11 or the surface 13, which is an inclined surface that lowers toward the left side in the plane of drawing, and sinks the in-and-out cam 1, so that the impact of contact between the knitting operation butt 70 and the in-and-out cam 1 can be prevented from directly acting on both members.
  • the knitting operation butt 70 that rode on the surface 11 or the surface 13 passes the surface 12 or the surface 14 and reaches the gap between the guide inclined plane 10 and the lowering inclined plane 9, and then lowers along the lowering inclined plane 9.
  • the knitting needle provided with the knitting operation butt may be a latch needle or a compound needle including a slider.
  • the configuration of the present invention is also applicable to a complex cam system including a transfer cam.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Knitting Of Fabric (AREA)
EP09834315.5A 2008-12-26 2009-12-03 Machine à tricoter rectiligne Active EP2392710B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008333398 2008-12-26
PCT/JP2009/006579 WO2010073500A1 (fr) 2008-12-26 2009-12-03 Métier à mailles cueillies

Publications (3)

Publication Number Publication Date
EP2392710A1 true EP2392710A1 (fr) 2011-12-07
EP2392710A4 EP2392710A4 (fr) 2013-03-06
EP2392710B1 EP2392710B1 (fr) 2014-11-19

Family

ID=42287159

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09834315.5A Active EP2392710B1 (fr) 2008-12-26 2009-12-03 Machine à tricoter rectiligne

Country Status (5)

Country Link
EP (1) EP2392710B1 (fr)
JP (1) JP5414697B2 (fr)
KR (1) KR101356444B1 (fr)
CN (1) CN102264966B (fr)
WO (1) WO2010073500A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102517781A (zh) * 2011-12-21 2012-06-27 陶春明 一种电脑横机的中山三角
CN102517779A (zh) * 2011-12-21 2012-06-27 陶春明 一种电脑针织横机的中山三角
CN102517780A (zh) * 2011-12-21 2012-06-27 陶春明 一种电脑横机的中山导向三角

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119413A (en) * 1982-04-28 1983-11-16 Shima Idea Center Co Ltd Flat knitting machine
JPH01104863A (ja) * 1987-10-12 1989-04-21 Shima Seiki Mfg Ltd ニツトランカム
JPH0586565A (ja) * 1991-09-21 1993-04-06 Shima Seiki Mfg Ltd 編機の度山
EP1536050A1 (fr) * 2002-08-06 2005-06-01 Shima Seiki Mfg., Ltd Machine a tricoter equipee d'un mecanisme a changement de vitesse variable
EP1835059A1 (fr) * 2004-12-27 2007-09-19 Shima Seiki Mfg., Ltd Systeme de came combinee

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4841335B2 (ja) * 2006-06-30 2011-12-21 株式会社島精機製作所 横編機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119413A (en) * 1982-04-28 1983-11-16 Shima Idea Center Co Ltd Flat knitting machine
JPH01104863A (ja) * 1987-10-12 1989-04-21 Shima Seiki Mfg Ltd ニツトランカム
JPH0586565A (ja) * 1991-09-21 1993-04-06 Shima Seiki Mfg Ltd 編機の度山
EP1536050A1 (fr) * 2002-08-06 2005-06-01 Shima Seiki Mfg., Ltd Machine a tricoter equipee d'un mecanisme a changement de vitesse variable
EP1835059A1 (fr) * 2004-12-27 2007-09-19 Shima Seiki Mfg., Ltd Systeme de came combinee

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2010073500A1 *

Also Published As

Publication number Publication date
EP2392710B1 (fr) 2014-11-19
EP2392710A4 (fr) 2013-03-06
CN102264966B (zh) 2013-08-14
JPWO2010073500A1 (ja) 2012-06-07
JP5414697B2 (ja) 2014-02-12
WO2010073500A1 (fr) 2010-07-01
CN102264966A (zh) 2011-11-30
KR101356444B1 (ko) 2014-01-29
KR20110099699A (ko) 2011-09-08

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