WO2017134642A1 - Dispositif de débourrage positif avec agencement de disques et "arbre dans l'arbre" - Google Patents

Dispositif de débourrage positif avec agencement de disques et "arbre dans l'arbre" Download PDF

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Publication number
WO2017134642A1
WO2017134642A1 PCT/IB2017/050905 IB2017050905W WO2017134642A1 WO 2017134642 A1 WO2017134642 A1 WO 2017134642A1 IB 2017050905 W IB2017050905 W IB 2017050905W WO 2017134642 A1 WO2017134642 A1 WO 2017134642A1
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WIPO (PCT)
Prior art keywords
shaft
selector
diagram
discs
frame
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Ceased
Application number
PCT/IB2017/050905
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English (en)
Inventor
Sanjay KURKUTE
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Individual
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Individual
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Publication of WO2017134642A1 publication Critical patent/WO2017134642A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C5/00—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices
    • D03C5/02—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices operated by rotating cams

Definitions

  • the invention relates textile engineering field and more specifically to the Shedding Apparatus used for warp thread patterning on Weaving Machines.
  • This novel Shedding Device uses unique shaft in shaft concept for driving the output levers of the shedding device. This enables freedom in selection and drive elements to remain at different pitch than the driving levers which isn't the case earlier on. Thus parts can be made simpler and stronger. Another novelty is that the selector mechanism and entire operations of frame selection and execution sequences are positive.
  • the main objective of the invention was to evolve world's first link and disc type positive shedding device without hook, knife and rotor cam type arrangement, the swivel links and discs augment the operational speed as well as overall reliability of the devise as a whole.
  • the secondary objective of the invention was to have a shedding device in such a way that the output levers are driven by one of a kind "shaft in shaft” arrangement, gaining freedom for using bigger and better parts (the constraint in conventional devices comes from heald/shaft pitch limitation of 10 to 15 mm per frame.)
  • the additional objective of the invention was to have a Shedding Device with positive electro-magnet actuated frame/shaft selector and frame execution mechanism.
  • Another additional objective of the invention was to have world's first left Hand Side and Right Hand Side, half split structure of shedding device occupying very little space on the weaving machine, augmenting making of a weaving machine with a very small footprint. Half the number of frames will be driven from one side and half from another.
  • the Patent Illustration comprises total 12 diagrams:
  • Diagram 1 Positive drive for shifting elements in shedding device -
  • Number 1 is gear drive running at half of beat up speed.
  • Number 2 is pair of conjugated cams imparting desired oscillation motion to Cam rocker Numbered 3 which in turn drives Universal linkage lever numbered 4.
  • Number 5 is universal connecting rod. This drives another universal lever numbered 6 which is mounted on shaft 7.
  • Number 8 is linkage which imparts equal and opposite motion to shaft 9.
  • Numbered 10 are levers fitted on shaft 7 and 9 which drive the other parts described in further diagrams in a positive way through connecting links numbered 11.
  • Numbered 12 is selector mechanism on top of which the selector magnet numbered 13 is mounted.
  • Numbered 14 is the lever driving motion to selector mechanism 12 which it gets from positive cam numbered 15 fitted on a shaft running at speed equal to beat up speed.
  • This cam operates selector mechanism at timing between 5 to 25 degrees before and after the shedding timing or motion of the frames and not during the shedding movement.
  • Numbered 16 is connecting rod for transferring motion from cam 14 at top to selector 12 at the bottom.
  • Number 17 are output levers for shedding device which drive the heald frames. These levers are set at double the heald frame pitch. These levers drive only half the number of frames on the machine in an alternate manner, that is, even numbered frames are driven from one side and remaining odd numbered frames are driven from other end of the machine where an identical mechanism is provided. So to say the shedding device is split in to two halves and mounted on two sides of machine as illustrated in diagram 14.
  • Diagram 3 Shaft in Shaft Concept - Diagram 3 illustrated six stage basic Shaft in Shaft Concept as an example of application of this invention .
  • Numbered 18 is innermost shaft having overall diameter between 20 and 60 mm, which is longest in length and is supported by bearings mounted on two places 19 at the two ends of the shaft.
  • Numbered 20 and 21 are input and output element keys located in keyways cut in shaft 18 for securing drive elements for farthest heald frame on the machine.
  • this will drive heald number 11 or 12, based on whether his device is fitted on left or right split device on the machine.
  • Over this shaft is a hollow shaft numbered 22 slides over shaft 18 and serially there are 4 more sequentially bigger hollow shafts numbered 23,24,25 and 26 which form the whole six stage shaft in shaft structure.
  • Shaft in Shaft arrangement facilitates effectively breaks the pitch barrier for shedding device.
  • execution mechanism On one side there is execution mechanism and another there are output levers.
  • Output levers can be set at any pitch as they mean only one diametrical lock for levers.
  • the execution mechanism however can be set at different pitch by extending length on other end of shaft in shaft arrangement. This is within itself a novel arrangement as none of the part are geometrically or structurally restricted as it will be revealed in further diagrams.
  • driver discs numbers 31, 35, 39 and 43 are driving discs and having a have a notch on their circumference. These are freely oscillating without any diametrical locking arrangement with the shafts which they sit on. These are arranged in such a way they are alternately arranged with driven discs numbered 32, 34, 36, 38, 40 and 42. Out of the driver discs numbers 31, 35, 39 and 43 move in one direction whereas driver discs numbered 33, 37, and 41 move in opposite direction so that they create opposite motion pattern on both sides of each of the Driven discs grouped as 32 to 42 above. This motion pattern reverses on each and every weft pick on the machine.
  • Number 44 is selector latch which can be engaged for motion by selector mechanism.
  • Number 45 is pivot point for latch 44 and numbered 46 are flat springs to center this lock and these are fitted on both sides of driven discs grouped 32 to 42 above. These locks are on all of the driven discs but only one of them is numbered here for simplicity of description.
  • Diagram shows view of driven discs 32 to 42 only with locking shafts, all other parts are removed from diagram for simplicity.
  • Number 47 is body of selector mechanism.
  • Numbered 48 is face of selector mechanism body which arrests lock (inserted in driven discs & numbered 44 in diagram 3) in one direction.
  • On the other end of the driven disc a projection 49 rests on shafts numbered 50, preventing the angular motion in other direction. This creates a unique position for driven disc so that it is positively locked between face 48 and shaft 50.
  • shifter plates 51 and 52 and retainer plate numbered 53 are also shown in next diagrams.
  • Diagram shows view of Shifter mechanism, with the cover fastening holes Numbered 54.
  • Number 55 are mounting holes for selector body on one side and numbered 56 are holes for mounting on other side.
  • Numbered 57 and 58 are link driving parts secured together on a shaft forming a unified assembly of the same.
  • Numbered 59 is part which fits right inside the body which is a slider driven by links 57 by means of one of the two small connecting links, creating oscillating motion of the same derived from cam and link arrangement 14, 15 and 16 described in diagrams 1 and 2 above.
  • Number 60 is another slider which slides inside the body of slider 59 and gets opposite motion from remaining connecting small link of the duo described above and driven by part numbered 57.
  • Numbered 61 is a pair of rectangular rods securely held in slots made in slider part numbered 59 and similarly, numbered 62 are another pair of rectangular rods secured securely held in slots made in slider part 60.
  • These rods drive shifter plates 51 and 52 respectively (motion described below in paragraph). Plates 51, 52 and 53 are mounted on both sides of shifter body and plates on both sides are like mirror images of each other.
  • Shifter plates 51 & 52 Sliders 59 and 60 have rectangular rods 61 and 62 securely mounted respectively in them. These rods numbered 61 engage with shifter plates 52 on both sides and have a relief slots for both plates 53 and 51. Similarly Rods 62 engage with shifter plate 51 and has relief for motion of plates 53 and 52. At any given time shifter plates move opposite direction with each other whereas the retainer plate moves forward of back ward depending upon drive from part 57. In case of frame shifting mode the shifter plates 51 and
  • Diagram shows front view of selector mechanism fully assembled.
  • 51, 52 and 53 are shifter and retainer plates briefly described in prior diagrams and explained in detail with next two diagrams 8 and 9.
  • Numbered 63 is pair of selector levers used for sending a given the frame from up position to down position and numbered 64 is pair of selectors levers used to send same frame from down position to up position.
  • Numbered 65 are retaining springs within the selector levers 63 and 64.
  • Numbered 66 and 67 two geometrically surfaced slots to guide the shifter latch 44 through its up or down motion of respective driven disc. This working of frame selection is explained further diagram 10 before which diagram 8 and 9 must be understood.
  • Diagram shows translucent view of retaining plate 53 so that its working is understood.
  • 47 is selector body in which slider part 59 moves in forward and backward oscillation ranging between 10 to 40 mm.
  • Numbered 68 are two fixed pins in body of selector upon rectangular projections 69 so as to guide the retainer plate 53 in one direction and back guided in slots 71 in retainer plate.
  • Numbered 70 are pins secured in slider 59 which lock in to oblique slots numbered 72 made in retainer plate so that pins numbered 70 create between 5 to 20 mm back and forth motion of retainer plate when slider 59 is moved by connecting links mounted on part numbered 57.
  • the retainer plate had three cam (oblique) slots numbered 72 in which pins 70 impart motion derived from part 59.
  • the diagram shows position of selector mechanism JUST at the start of shifting cycle.
  • Numbered 73 and 74 are two sub parts of shifting lever numbered 64 or 65 or any selector lever on the selector body for that matter. These two Sub parts are pivoted together at pivot points 75 so that they can swing along with the shifter plate 51 when it moved forward.
  • Numbered 76 are retaining springs in opposite direction on two adjacent levers.
  • Number 77 are cylindrical appendages on the shifter levers.
  • Diagram 11 Shows a position of driver and driven discs at the time of shifting. Shaft 7 and 9 always move in opposite direction sync with each other. Driven discs 32, 36 and 40 are in down position and driven discs 34, 38 and 42 are in up position. First set of d riven discs have driven discs 32-36-40 have driver discs 33-37-41 to bring them up respectively. I n next pick the shafts 7 and 9 will oscillate to another position and driver discs sets 33-37- 41 and 31-35-39-43 will interchange their positions. So on next pick driver 31-35-39 will be in a position to bring up the driven discs 32-36-40. So on every pick there are driver discs available for shift the given from its current position. Hence any heald frame can change its position after any pick inserted by the machine.
  • Diagram 12 shows entire selector mechanism assembly. Geometrical surfaces 66 and 67 guide the selector latch during frame shifting. The latch shifting is positive as explained above, frame locking is positive which is also explained above and remaining path is during changing position. These geometric surfaces positively guide the latch during the path hence positive handling conditions are maintained at all times. Despite this positivity of action the entire selector assembly can be taken out by dismantling just four fastners. This is the hardest working and delicate part of the entire Shedding device and it is thus arranged in a module form for segregation for maintenance.
  • Diagrams 12 and 13 show the compact space saving feature of this Positive Shaft in shaft Shedding Device.
  • Diagram 12 shows how it can be packed in a compact weaving machine body.
  • Diagram 13 shows how left and right modules of the split shedding device are installed in a typical exemplary rapier weaving machine with 12 shafts warp designing capacity.
  • Number 79 is left Shedding module fitted in left side machine body for driving heald frames l,3,5,7,9,and 11.
  • Numbered 80 is right side Shedding module fitted in Right side body of machine driving heald frames 2,4,6,8,10 and 12.
  • Numbered 81 are harnesses for frames.
  • Number 82 are frames. This completes the Split Shedding mechanism arrangement wherein the output levers of each side units are at double the frame pitch which makes the output lever fitment simpler and easy to maintain .
  • Number 2 is pair of conjugated cams
  • Number 6 is another universal lever
  • Number 7 is shaft for driving discs
  • Number 9 is another shaft for driving discs
  • Number 12 is selector mechanism
  • Number 14 is lever driving selector mechanism
  • Number 15 is positive cam for selector mechanism
  • Number 16 is connecting link from cam 15
  • Number 17 are output levers from shaft in shaft arrangement for heald frames
  • Number 22 to 26 further hollow shafts
  • Number 44 is selector latch Number 45 pivot point for latch 44
  • Number 46 are flat springs ( 4 springs per driven disc, 2 on each side)
  • Number 47 is body of selector mechanism
  • Number 48 is critical face of selector mechanism body
  • Number 54 are mountings holes for cover of shifter mechanism
  • Number 55 are mounting holes on one side of selector body
  • Number 56 are mounting holes on other side
  • Number 57 and 58 are parts for driving elements of selector mechanism
  • Number 60 is another slider inside first one
  • Number 61 is pair of rectangular rods for driving shifter plates 51
  • Number 62 is another pair rectangular rods for driving shifter plates 52
  • Number 63 and 64 are pair of selector levers
  • Number 65 are retaining springs mounted on Selector levers
  • Number 66 & 67 are geometrically surfaces slots for guiding latch 44
  • Number 68 are fixed pins in selector body
  • Number 70 are pins secured in slider 59
  • Number 71 is guiding slot cut in retainer plate 53
  • Number 72 is oblique or cam clot in retainer plate 53
  • Number 73 & 74 are two sub parts of shifting lever 64/65
  • Number 77 are cylindrical shifting appendages
  • Number 78 are slots ion driver discs
  • Number 81 is right shedding module
  • Number 82 are harnesses for driving heald frames from left side module
  • Number 83 are harnesses for driving heald frames from right side module
  • Number 84 are frames through which threads are drawn for weaving

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

L'invention concerne le premier dispositif de débourrage positif de type à disques et maillons du monde sans agencement de type crochet, couteau et came de rotor, les disques et maillons pivotants augmentent la vitesse de fonctionnement ainsi que la fiabilité. En outre, les leviers de sortie sont entraînés par le premier agencement "arbre dans l'arbre" du monde pour obtenir une liberté d'utilisation de parties plus grandes, meilleures et plus solides, étant donné que la contrainte de dispositifs classiques provient de la limitation de pas de cadre de lisse de 10 à 15 mm par cadre. L'invention divise cette barrière de conception et comprend également un sélecteur de cadre actionné par électroaimant logique positif plus robuste et un mécanisme d'exécution de cadre également positif. L'invention concerne également la première structure divisée côté gauche et côté droit du monde du dispositif de débourrage qui occupe très peu de place sur le métier à tisser, et ouvre la voie pour fabriquer un métier à tisser ayant un très faible encombrement, avec la moitié des cadres de lisse entraînée depuis un côté et la moitié restante depuis l'autre côté.
PCT/IB2017/050905 2016-02-05 2017-02-17 Dispositif de débourrage positif avec agencement de disques et "arbre dans l'arbre" Ceased WO2017134642A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201621004195 2016-02-05
IN201621004195 2016-02-05

Publications (1)

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WO2017134642A1 true WO2017134642A1 (fr) 2017-08-10

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019102294A1 (fr) 2017-11-22 2019-05-31 Kurkute Sanjay Dispositif de présentation de trame rotatif à aiguille unique
CN113073414A (zh) * 2020-01-03 2021-07-06 广野精机股份有限公司 织带机棕框变速机构
CN116288855A (zh) * 2023-02-23 2023-06-23 江阴市通源纺机有限公司 一种提综开口装置
CN118293768A (zh) * 2024-06-06 2024-07-05 诸城市惠林精密机械有限公司 一种凸轮分割器凸轮检测工装

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557033A (en) * 1948-01-29 1951-06-12 Steel And Alloy Tank Company Harness return mechanism
US4739806A (en) * 1985-08-23 1988-04-26 Etablissements Staubli-Verdol Device for forming the shed in a weaving loom
US9359698B2 (en) * 2013-08-27 2016-06-07 Kabushiki Kaisha Toyota Jidoshokki Shedding apparatus for waste selvage in a loom

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557033A (en) * 1948-01-29 1951-06-12 Steel And Alloy Tank Company Harness return mechanism
US4739806A (en) * 1985-08-23 1988-04-26 Etablissements Staubli-Verdol Device for forming the shed in a weaving loom
US9359698B2 (en) * 2013-08-27 2016-06-07 Kabushiki Kaisha Toyota Jidoshokki Shedding apparatus for waste selvage in a loom

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019102294A1 (fr) 2017-11-22 2019-05-31 Kurkute Sanjay Dispositif de présentation de trame rotatif à aiguille unique
CN113073414A (zh) * 2020-01-03 2021-07-06 广野精机股份有限公司 织带机棕框变速机构
CN116288855A (zh) * 2023-02-23 2023-06-23 江阴市通源纺机有限公司 一种提综开口装置
CN118293768A (zh) * 2024-06-06 2024-07-05 诸城市惠林精密机械有限公司 一种凸轮分割器凸轮检测工装
CN118293768B (zh) * 2024-06-06 2024-07-30 诸城市惠林精密机械有限公司 一种凸轮分割器凸轮检测工装

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