EP0217432A1 - Schloss für Hochstrickmaschine und mit derartigem Schloss versehene Strickmaschine - Google Patents

Schloss für Hochstrickmaschine und mit derartigem Schloss versehene Strickmaschine Download PDF

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Publication number
EP0217432A1
EP0217432A1 EP86201471A EP86201471A EP0217432A1 EP 0217432 A1 EP0217432 A1 EP 0217432A1 EP 86201471 A EP86201471 A EP 86201471A EP 86201471 A EP86201471 A EP 86201471A EP 0217432 A1 EP0217432 A1 EP 0217432A1
Authority
EP
European Patent Office
Prior art keywords
cam
cams
transfer
selection
keys
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
EP86201471A
Other languages
English (en)
French (fr)
Other versions
EP0217432B1 (de
Inventor
Marcello Baseggio
Gérard Steiger
Louis Paul Germain Frund
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.)
Atelier de Construction Steiger SA
Original Assignee
Atelier de Construction Steiger SA
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 Atelier de Construction Steiger SA filed Critical Atelier de Construction Steiger SA
Publication of EP0217432A1 publication Critical patent/EP0217432A1/de
Application granted granted Critical
Publication of EP0217432B1 publication Critical patent/EP0217432B1/de
Expired legal-status Critical Current

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    • 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
    • D04B15/362—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines with two needle beds in V-formation
    • D04B15/365—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines with two needle beds in V-formation with provision for loop transfer from one needle bed to the other
    • 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
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/82—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the needle cams used

Definitions

  • the present invention relates to a cam holder for a straight knitting machine according to the preamble of claim 1.
  • Such a cam holder is described, for example in patent FR 2 438 105.
  • This cam holder has, along its length, four sections or falls with specific functions. In the center of the cam holder there are two knitting sections and at each end of the cam holder a transfer section used to carry out a mesh transfer.
  • This cam holder is intended to work with an individual key selection system electronically controlled and carried by the carriage. It allows any needle, during each passage of the carriage, to work as well in training, as in picking or in carry forward or backward. However, when a needle is working in knitting (forming or picking) the transfer sections must be supported, that is to say that the length of the cam holder corresponding to these transfer sections is not used in the travel of the carriage.
  • Analogue cam holders are also known from documents DE-B-17 60 025 and FR-A-2 075 791.
  • cam holder having a single type of section or drop capable of performing all the desired functions, in particular a mesh transfer forward or backward in the two directions of movement of the cam-carrying carriage (GB-A-2 106 940).
  • This cam holder however has a large number of movable cams requiring a corresponding number of control devices.
  • it includes pairs of cams alternately in work and out of work, the control of which must be ensured by end-of-travel stops, which requires working with a fixed stroke of the carriage.
  • end-of-travel stops which requires working with a fixed stroke of the carriage.
  • end-of-travel stops which requires working with a fixed stroke of the carriage.
  • a part of the race is unused.
  • the control of the needles is concentrated on the same level and the heels of the needles support all the efforts necessary to move the needles. The risk of breakage is high for certain functions, especially if working at high speed.
  • the present invention aims to achieve a cam holder also having a single type of section or drop capable of performing all the desired functions, but having a minimum of controlled cams and allowing to work at high speed and with a variable stroke of the cart.
  • Figures 1 and 2 schematically show, as a reminder, a straight knitting machine comprising two needle beds 1 and 2 forming a dihedral and in the grooves of which are arranged needles and keys or pushers cooperating with these needles.
  • auxiliary beds 3 and 4 At the bottom of each of the beds 1 and 2 are fixed auxiliary beds 3 and 4 forming a right angle with the main beds and in which are housed auxiliary keys associated with the keys of the beds 1 and 2 and cooperating with electromagnetic selection devices 5 and 6 secured to a carriage 7 moving above the needle beds 1 and 2 on rails 8 and 9 and mainly carrying two cam holders 10 and 11.
  • the selection devices 5 and 6 are described in detail in patent CH 632 024.
  • auxiliary keys are mounted on springs and 1u'elles have a fork in which is engaged the rear end of the main keys, all so that the main keys are selected when the auxiliary keys, all of first shot by a cam, are not retained by one of the elements of the selection device but rise under the effect of their springs, driving the corresponding main key, the heel of which is then driven by a cam selection cam.
  • the cam holders 10 and 11 also carry electromagnetic devices 12 and 13 controlling the transfer cams so that these cams can be operative, by protruding from the cam holder or inoperative, by being embedded in the cam holder .
  • electromagnetic devices 12 and 13 controlling the transfer cams so that these cams can be operative, by protruding from the cam holder or inoperative, by being embedded in the cam holder .
  • Such a device can be, for example, the device described in detail in patent CH 635,378.
  • the cam holders according to the two embodiments, as shown in FIG. 2, carry a cam holder with a drop and four selection devices 6.
  • the cam holder according to the first embodiment, as shown in FIG. 3, comprises a first key selection cam 14 disposed in the center of the cam holder, a second selection cam 15 and a third selection cam 16 disposed on each side of the selection cam 14, at a certain distance from the latter, these three selection cams being fixed, two automatically retractable picking cams 17 and 18 disposed on each side of the selection cam 14, between the selection cams, two retractable cams 19 and 20, arranged on each side and above the selection cam 14, two transfer cams 21 and 22 automatically retractable, arranged on each side of the selection cam 14, two felling cams for the keys 23 and 24 arranged on each side of the selection key 14, a transfer cam 25, disposed in the center of the cam holder, above the selection cam 14, this cam 25 being erasable at the by means of one of the devices 12 or 13, a fixed cap cam 26, disposed above the transfer cam 25 and defining with this cam 25 a channel 27 for the heel of the needles working in transfer (needles which give), two conventional drop cams 28 and 29 on each
  • the cams retractable automatically by the keys respectively have a ramp 17a, 18a, 19a, 20a, 21a, 22a.
  • the cams 15 and 16 also have a ramp 15a, respectively 16a, but these cams being fixed, these ramps are not used for retracting the cams, but for allowing the passage of the heels of the keys not selected after the auxiliary keys have been released by the selection device.
  • the needles 32 and the keys 33 have been shown on the left in the drawing, in profile, that is to say in the folded position relative to their real position and in the rest position.
  • the actual position of the needles, respectively of the keys has been shown, for one of these, only by its respective heel 32a, respectively 33a.
  • the position of the selection stations 6 is indicated on the one hand by the axes of symmetry 34, respectively 35, 36 and 37 of these selection stations, and on the other hand by the first three pawls 38, 39, 40 and 41 of each of the selection stations, pawls which are intended to retain the unselected auxiliary keys, in the low position, as described in patent CH 632 024.
  • cam parts 19b, 20b and 25a are hollow parts.
  • the cams 19 and 20 also have at their outer ends a clearance 19c, respectively 20c for the passage of the heel 33a of the wedges, more precisely of the lower half of these heels, the upper part, of lower level passing, in culling, above the cam 19 or 20 as can be seen in FIG. 5.
  • the cam 25 also has, at each of its ends, a safety ramp 25b, respectively 25c, these safety ramps being intended to prevent breakage of the heel needle which would accidentally come up against the end of the transfer cam 25.
  • the cam holder shown has an axis of symmetry A passing through the middle of the selection cam 14 and the middle of the transfer cam 25.
  • the cam holder will be made up of several sections (falls) identical to the section shown. This is indicated by the two dashed lines B and C which are also axes of symmetry between two neighboring sections. The number of sections or scraps likely to be placed end to end is only limited by the length of the knitting machine.
  • FIG. 3 are indicated the trajectories of the heels of a key and of the needle which is associated therewith for a work in transfer of mesh, the needle which gives 32 'being in the rear needle bed and driven by the cam holder rear, shown in the upper part of Figure 3, while the needle which receives 32 works with the front cam holder shown in the lower part of the drawing.
  • the rear cam holder is of course identical to the front cam holder and its cams have been designated by the same references accompanied by a '. It is however without other possibility to reverse the functions or to consider the reflected image of FIG. 3, which means that the transfer can also be carried out from front to back and from left to right or from right to left.
  • the key 33 ' is selected first in front of the selection cam 15'. It is driven by this selection cam 15 'and the cams 17' and 19 'along the path a, then felled at the end by the felling cam 24'.
  • the associated needle 32 ′ is driven by the key 33 ′ then taken over by the channel 27 ′ in order to carry out the transfer according to a conventional trajectory b.
  • the key 33 associated with the needle 32 which receives the stitch is selected only before the selection cam 14 and its heel is raised by this cam 14 by pushing the cam 21 in passing, then by the cam 22 along a trajectory c.
  • the needle 32 which is associated with it is driven by the key along a trajectory d, then its heel is supported by the transfer cam 25 to receive the transferred mesh.
  • Key 33 is at its turn driven back by the needle 32 and its heel pushes the retractable cam 18 before being brought down by the cam 24.
  • a needle If a needle has to work in culling, its key is selected in front of the selection cam 14 (FIG. 5). Its heel is driven by the cams 14, 22 and 18 and it pushes back by passing the cam 20, along a trajectory g. The needle associated with it is driven by this key along a trajectory similar to h, the transfer cam 25 being erased.
  • a needle If a needle has to work in formation, its key is selected in front of the selection cam 15 and its heel 33a is driven by this cam 15 and by the cams 17 and 19 along a path i.
  • the needle associated with it follows a trajectory j similar to the trajectory i, the transfer cam 25 being erased.
  • the needle and its key are then driven by the cam 26, respectively, by the drop cam 29 and the key felling cam 24.
  • the cam holder according to the second embodiment, as as shown in FIG. 7, comprises a first selection cam 43, for selecting the keys, disposed in the center of the cam holder, a second selection cam 44 and a third selection cam 45 disposed on each side of the cam selection 43, at a certain distance from this cam 43.
  • the selection cam 43 is in two parts: a fixed lower part in the shape of a trapezoid and a mobile upper part 46 of triangular shape, capable of moving transversely, that is to say ie from right to left or vice versa when it meets the heel of a key.
  • the other two selection cams 44 and 45 are fixed, but each have a ramp 44a, respectively 45a, which are not used for retracting the cams, but for allowing the heels of the unselected keys to pass after the auxiliary keys have have been released by the selection device, as described in patent CH 632 024.
  • On each side of the movable cam 46 are arranged two fixed transfer cams 49 and 50 which also serve as stops for the cam 46 to limit its stroke.
  • a triangular cam 51 pivotally mounted on the cam holder. This pivoting cam 51 is integral with a support 52 set back from the cam 51 and allowing the cam 51 to pivot about an axis passing through the top of the triangle. At rest, the cam 51 occupies the position shown in FIG.
  • the needle 32 and the keys 33 have been shown on the left in the drawing, in profile, that is to say in the folded position relative to their real position and in the rest position.
  • the actual position of the needles, respectively of the keys has been shown, for one of these, only by its respective heel 32a, respectively 33a.
  • the position of the selection stations 6 is indicated on the one hand by the axes of symmetry 34, respectively 35, 36 and 37 of these selection stations, and on the other hand by the first three pawls 38, 39, 40 and 41 of each of the selection stations, pawls which are intended to retain the non-selected auxiliary keys, in the low position, as described in patent CH 632 024.
  • the cam holder shown has an axis of quasi-symmetry A passing through the middle of the selection cam 43, of the pivoting cam 51, of the transfer cam 55 and cap cam 56.
  • the cam holder will be made up of several sections (falls) identical to the section shown. This is indicated by the two dashed lines B and C which are also axes of symmetry between two neighboring sections. The number of sections or scraps likely to be placed end to end is only limited by the length of the knitting machine.
  • FIG. 7 are indicated the trajectories of the heels of a key of the needle which is associated with it for a work in transfer of stitch, the needle which gives 32 'being in the rear needle bed of the machine and driven by the door - rear cams shown in the upper part of Figure 3, while the needle which receives 32 works with the front cam holder shown in the lower part of the drawing.
  • the rear cam holder is of course identical to the front cam holder and its cams have been designated by the same references accompanied by the sign '. However, it is otherwise possible to reverse the functions or to consider the reflected image of FIG. 7, which means that the transfer can also be carried out from front to back and from left to right or from right to left.
  • the key 33 ' is selected first in front of the selection cam 44'. It is driven by this selection cam 44 'and by the picking cam 47' along the trajectory "a" at a height such that its heel abuts against one of the oblique sides of the pivoting cam 51 'which pivots around its top.
  • the needle associated therewith 32 ′ is driven by the key and then taken over by the channel 57 ′ in order to carry out the transfer according to a conventional trajectory "b". When the needle descends into the channel 57 'it drives the key 33' backwards and this key is finally felled by the felling cam 63 '.
  • pivoting cam 51 makes it possible to reduce the number of cams by eliminating two cams in the business way and to have cams 49 and 50 made. The construction is thus simplified.
  • the trajectories of a key and the associated needle working in cueing is represented in FIG. 9.
  • the key is selected in front of the central selection cam 43 its heel 33a is raised by this cam 43 and by the movable cam 46 that it pushes back to the right to continue its ascent on the cam 50 while moving aside the pivoting cam 51.
  • the transfer cam 55 is retractable, so that the heel 32a of the needle which follows the trajectory "h” , is not pushed back by the cam 55.
  • the heel of the key associated with it therefore does not meet the oblique ramp 48a of the picking cam 48 but is deflected by this cam 48 along the path "g".
  • the rise of the needle is further limited by the cap cam 56.
  • the needle is then taken up by the drop cam 59, while the key is lowered by the fall cam 63.
  • FIG. 10 represents the trajectory "i" of a key and the trajectory "j" of the associated needle in the case of a needle working in formation.
  • the key is selected in front of the cam selection 44 and it is raised by this cam 44 and the picking cam 47 by driving the associated needle along the path "j", the transfer cam 55 being out of work, that is to say retracted.
  • the heel 33a 'of the key meets the oblique left flank of the pivoting cam 51 which pivots until it stops 54, so that the key rises along this pivoting cam 51 by driving the associated needle which is working in formation .
  • the needle then descends along the cap cam 56 and then the drop cam 59, driving the key which is felled by the felling cam 63.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP86201471A 1985-09-04 1986-08-27 Schloss für Hochstrickmaschine und mit derartigem Schloss versehene Strickmaschine Expired EP0217432B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP85201387 1985-09-04
EP85201387 1985-09-04
CH947/86 1986-03-07
CH94786 1986-03-07

Publications (2)

Publication Number Publication Date
EP0217432A1 true EP0217432A1 (de) 1987-04-08
EP0217432B1 EP0217432B1 (de) 1988-11-17

Family

ID=25686184

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86201471A Expired EP0217432B1 (de) 1985-09-04 1986-08-27 Schloss für Hochstrickmaschine und mit derartigem Schloss versehene Strickmaschine

Country Status (4)

Country Link
US (1) US4669280A (de)
EP (1) EP0217432B1 (de)
DE (1) DE3661204D1 (de)
ES (1) ES2002281A6 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993006286A1 (de) * 1991-09-19 1993-04-01 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Kg Flachstrickmaschine
EP0535985A1 (de) * 1991-10-04 1993-04-07 Shima Seiki Mfg., Ltd. Verfahren zum Überhängen von Maschen und Vorrichtung zum Überhängen von Maschen an einer Flachstrickmaschine
EP3736365A1 (de) * 2019-05-07 2020-11-11 Daniele Tralli Aussenstricktextil, insbesondere mit abschirm- und/oder sonnenschutzfunktion, und verfahren zu ihrer herstellung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2273935T3 (es) * 2002-03-23 2007-05-16 H. STOLL GMBH & CO. Tricotosa rectilinea con platinas ajustables.
CN102224286B (zh) * 2008-12-01 2013-09-11 株式会社岛精机制作所 移圈接受针用三角装置
CN102021734B (zh) * 2010-12-29 2012-08-01 宁波慈星股份有限公司 电脑针织横机的编织三角机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484479A1 (fr) * 1980-06-16 1981-12-18 Steiger Sa Atelier Constr Porte-cames pour machine a tricoter
GB2106940A (en) * 1981-09-30 1983-04-20 Schieber Universal Maschf Single or multiple camming unit for knitting machines
GB2119413A (en) * 1982-04-28 1983-11-16 Shima Idea Center Co Ltd Flat knitting machine
GB2120690A (en) * 1982-05-27 1983-12-07 Schieber Universal Maschf Knitting-transfer cam unit for v-bed flat knitting machines with slider needles
GB2143855A (en) * 1983-07-27 1985-02-20 Schieber Universal Maschf Combined knitting-transfer cam unit for v-bed flat knitting machines with slider needles
GB2147014A (en) * 1983-09-21 1985-05-01 Stoll & Co H Single or multi-cam system for flat bed knitting machines

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES347504A1 (es) * 1967-11-11 1969-06-01 Mestre Mas Mecanismo para disminuir y aumentar agujas en maquinas tri-cotosas.
JPS563291U (de) * 1979-06-18 1981-01-13
JPS5750176A (en) * 1980-09-09 1982-03-24 Sanyo Electric Co Ltd Synchronizing separation circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484479A1 (fr) * 1980-06-16 1981-12-18 Steiger Sa Atelier Constr Porte-cames pour machine a tricoter
GB2106940A (en) * 1981-09-30 1983-04-20 Schieber Universal Maschf Single or multiple camming unit for knitting machines
GB2119413A (en) * 1982-04-28 1983-11-16 Shima Idea Center Co Ltd Flat knitting machine
GB2120690A (en) * 1982-05-27 1983-12-07 Schieber Universal Maschf Knitting-transfer cam unit for v-bed flat knitting machines with slider needles
GB2143855A (en) * 1983-07-27 1985-02-20 Schieber Universal Maschf Combined knitting-transfer cam unit for v-bed flat knitting machines with slider needles
GB2147014A (en) * 1983-09-21 1985-05-01 Stoll & Co H Single or multi-cam system for flat bed knitting machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993006286A1 (de) * 1991-09-19 1993-04-01 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Kg Flachstrickmaschine
EP0535985A1 (de) * 1991-10-04 1993-04-07 Shima Seiki Mfg., Ltd. Verfahren zum Überhängen von Maschen und Vorrichtung zum Überhängen von Maschen an einer Flachstrickmaschine
EP3736365A1 (de) * 2019-05-07 2020-11-11 Daniele Tralli Aussenstricktextil, insbesondere mit abschirm- und/oder sonnenschutzfunktion, und verfahren zu ihrer herstellung

Also Published As

Publication number Publication date
EP0217432B1 (de) 1988-11-17
DE3661204D1 (en) 1988-12-22
ES2002281A6 (es) 1988-08-01
US4669280A (en) 1987-06-02

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