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WO2000068085A1 - Dispositif a cames pour produire des noeuds se superposant et sequentiels de differentes dimensions et a vitesse variable - Google Patents

Dispositif a cames pour produire des noeuds se superposant et sequentiels de differentes dimensions et a vitesse variable Download PDF

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Publication number
WO2000068085A1
WO2000068085A1 PCT/IB2000/000516 IB0000516W WO0068085A1 WO 2000068085 A1 WO2000068085 A1 WO 2000068085A1 IB 0000516 W IB0000516 W IB 0000516W WO 0068085 A1 WO0068085 A1 WO 0068085A1
Authority
WO
WIPO (PCT)
Prior art keywords
axle
sequential
knots
connecting rod
lever
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.)
Ceased
Application number
PCT/IB2000/000516
Other languages
English (en)
Inventor
Calogero Daunisi
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.)
MAISA ITALIA Srl
Original Assignee
MAISA ITALIA Srl
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 MAISA ITALIA Srl filed Critical MAISA ITALIA Srl
Priority to DE60009053T priority Critical patent/DE60009053T2/de
Priority to EP00917237A priority patent/EP1175344B1/fr
Publication of WO2000068085A1 publication Critical patent/WO2000068085A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • B65B29/04—Attaching, or forming and attaching, string handles or tags to tea bags
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
    • D05B1/02—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making single-thread seams
    • D05B1/06—Single chain-stitch seams
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/20—Work-feeding means constituted by sewing needles
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
    • D05B3/02—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing with mechanisms for needle-bar movement
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/02—Loop takers, e.g. loopers for chain-stitch sewing machines, e.g. oscillating
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/30—Driving-gear for loop takers
    • D05B57/32—Driving-gear for loop takers in chain-stitch sewing machines

Definitions

  • This invention refers to a cam and rocker arm device equipped with two perpendicular axles carrying a needle and crochet at their respective extremities, capable of producing multiple sequential knots, of a simple or overlapped type, of different size and at variable speed.
  • Such a device is generally employed for joining very thin paper layers (of a few tenths or hundredths of a millimeter) over a well defined stretch, and finds a particularly useful application in the manufacturing of filter bags for infusion products, where the top end of the filter bag, which is generally formed by thin paper layers folded over themselves must be firmly sealed so at to prevent the infusion material from escaping while dipped into boiling water, while at the same time said sealing devices also act as an anchor for the free end of a bag handling thread.
  • the layer of filter bag to be sealed may not be uniform due to the presence of internal creases in the folds, such as in the case of double-lobe bags, it may in this case be necessary to apply a senes of sequential knots, of a simple or overlapped type and of a different size so as to enable for instance the central knot, which is capable of fastening the stretch in a crease, to be larger with respect to the two knots immediately preceding and following it ( Figure 3)
  • the purpose of this invention is to resolve all the mentioned problems with the required knotting flexibility, by using a mechanical cam and rocker arm device capable of deriving its motion directly from the manufactu ⁇ ng machine it is mounted on and of producing at each machine cycle, depending on the various layers of filter paper to be fastened and on the various lengths of the linear stretches to be sealed, a row of
  • Figure 4 is a prospective view of the device, evidencing all its external operating organs.
  • Figure 5 is a ground view of the same device.
  • Figure 6 is a front view
  • Figure 7 is a side view
  • Figure 8 is a ground view with particular reference to the multiple swinging motions of the device
  • Figure 9 is a particular front view showing the device s shearing characte ⁇ stics
  • Figure 10 is a front view with particular reference to the multiple swinging motions of the crochet's axle (3)
  • Figure 11 is a ground view with particular reference to the multiple swinging motions of the needle bar (4)
  • the number 1 indicates a mechanical box extending in a projecting fashion from a vertical operating plane and in its overall form constituting the device as an object of this invention
  • This device is essentially formed by three axles set in a mutually perpendicular position while at rest a first axle (4) essentially coinciding with the needle bar which is perpendicular to a second axle (3) essentially
  • RECTIFIED SHEET coinciding with the crochet carrying bar, which is in turn perpendicular to a third axle (2) constituting the inner shaft of the device acting as a fulcrum for all the mutually phased cams which provide the relative rotating and sliding motions to all the external organs defining the device (1).
  • the number (26) indicates a general organ containing in its interior a needle bar (4) which carries a sewing needle (28) at its extremity (27).
  • This needle bar (4) has the characteristic of being hinged at three main points (P1, P2 and P3), one of which is fixed (P1) and the other two are mobile (P2 and P3).
  • the lever (24) actuated by a first cam mounted on the shaft (2) generates on the needle bar (4), through its fulcrum (P2) and while cooperating with the connecting rod (30), an intermittent vertical motion in an upward and upward direction, so that the extremity of the needle (28) is capable of cooperating, for the production of every knot, with the relative crochet (29).
  • the lever (22) actuated by the second cam opposite P4 operates in cooperation with the connecting rod (20) hinged at the point P3 of the organ (26) and generates, as a result of rotating around the fulcrum (P4), a horizontal shift of the mentioned connecting rod (20), based on which the organ (26) rotating around its fixed fulcrum (P1) induces a swinging motion on the needle (28), which may, depending on the construction requirements, be of a sequential or multiple type or set at an ⁇ ⁇ ⁇ differential angular distance (Fig. 8), while the layers of material (31) to be sealed or knotted remain fastened inside the containment hopper (21).
  • the device (1) is equipped with suitable means for the feeding and unwinding of an appropriate knotting thread (14) endowed with the necessary tension, which cooperates with the mentioned organs of the device (1) to produce the multiple sequential knots of different size. More specifically, the thread (14), which is fed by known devices not shown in the enclosed figures is first stretched by the thread tightener (32), so as to allow it to cross the two thread braking devices (15) and (16)
  • the thread (14) subsequently crosses the fixed thread tighteners (17) and (18), as well as the mobile guiding slit (39) firmly attached to the bar (4) during its vertical motion, and is fed into the tube (19) essentially parallel to the bar (4), to be inserted first into the additional guiding slit (27) and finally into the eye of the needle (28).
  • the thread braking devices (15) and (16) are capable of releasing and stretching some linear stretches of thread of different size for each multiple knotting cycle.
  • the mentioned devices (15) and (16) are in fact actuated by two cams which are mutually phased with the second cam actuating the lever (22), which in turn generates the different and multiple shifts of the needle (28).
  • FIGS 4, 6 and 7 provide a prospective, frontal and side view of another typical feature of the device (1): the entire crochet axle structure constituted by a series of fixed and mobile organs whose conjugate motion defines the innovative aspect of this invention.
  • the crochet axle (3) in particular derives its rotating motion from a pair of conical gears (5) and (6) driven by the cam shaft (2).
  • the mentioned axle (3) features a series of organs endowed with a conjugate motion between themselves, which allow them to perform some swinging sequential shifts of a different angular size, with a motion perfectly phased with the sequential angular shifts of a different size of the needle (28).
  • the axle (3) in particular is firmly attached to a bushing (8) connected by the fulcrum (34) to the mobile connecting rod (7), which takes its motion from the lever (23) through the fulcrum (25) (refer to Figures 4 and 5).
  • This motion allows the axle (3) to glide inside an eyelet (33) provided in a fixed plane (9).
  • the lever (23) takes its motion for the angular shift from the fulcrum P4 and therefore transmits, operating in phase with the lever (22), a horizontal and intermittent linear motion to the connecting
  • the bars (3) and (4) which carry at their respective extremities a known rotating crochet and a known sewing needle, allow them to produce, when actuated by the conjugate motion of the levers (22), (23), (24) and a series of cams capable of impressing angular shifts of different size upon them, a se ⁇ es of sequential knots ( Figures 6, 8, 10, 11) on a material firmly set into the hopper (21), with the advantage of making it possible to change the number of knots produced in an overlapping fashion and the linear size of each knot (X diffe ⁇ ng from Y), simply by substituting the respecting control levers.
  • a further essential feature of the device (1) is constituted by the cutting device (10) shown in Figure 9, where said device acts in combination with the other organs described above
  • the mentioned device (10) is actuated by the conjugate motion of the lever (12) and of the connecting rod (11), which take their motion from a further cam set on the shaft (2) that operates in phase synchronization with the preceding cams actuating the levers (22), (23) and (24) and their respective knotting organs.
  • the mentioned thread shearing device (10) which faces the last knotting point among the sequential knots produced, takes care of cutting off the last stretch of thread (14) after the mentioned last stretch (37) of thread has been inserted into the opening (38) of the last loop (36)

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Package Closures (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

L'invention concerne un dispositif à cames et un culbuteur équipé de deux axes perpendiculaires portant une aiguille et un crochet à leurs extrémités respectives, capable de produire plusieurs noeuds séquentiels, de type superposé ou simple, de différentes dimensions et à vitesse variable.
PCT/IB2000/000516 1999-05-05 2000-04-25 Dispositif a cames pour produire des noeuds se superposant et sequentiels de differentes dimensions et a vitesse variable Ceased WO2000068085A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE60009053T DE60009053T2 (de) 1999-05-05 2000-04-25 Nockenvorrichtung zur herstellung von sequentiellen überlapenden , unterschiedlich grossen verknoteten stichen mit variabler geschwindigkeit
EP00917237A EP1175344B1 (fr) 1999-05-05 2000-04-25 Dispositif a cames pour produire des noeuds se superposant et sequentiels de differentes dimensions et a vitesse variable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI99A000976 1999-05-05
IT1999MI000976 IT1312393B1 (it) 1999-05-05 1999-05-05 Apparecchiatura a camme per l'esecuzione di nodi multipli sequenzialie sovrapposti a dimensione diferenziata e a velocita' variabile.

Publications (1)

Publication Number Publication Date
WO2000068085A1 true WO2000068085A1 (fr) 2000-11-16

Family

ID=11382896

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2000/000516 Ceased WO2000068085A1 (fr) 1999-05-05 2000-04-25 Dispositif a cames pour produire des noeuds se superposant et sequentiels de differentes dimensions et a vitesse variable

Country Status (4)

Country Link
EP (1) EP1175344B1 (fr)
DE (1) DE60009053T2 (fr)
IT (1) IT1312393B1 (fr)
WO (1) WO2000068085A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20090601A1 (it) * 2009-09-22 2011-03-23 Mafram Macchine S R L Macchina da cucire con ago pivottante

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1879449A (en) * 1931-01-07 1932-09-27 Singer Mfg Co Sewing machine
US2114304A (en) * 1933-10-17 1938-04-19 Millie Patent Holding Co Inc Square tea bag machine
US2307998A (en) * 1939-04-29 1943-01-12 Pneumatic Scale Corp Tea bag
US2690723A (en) * 1950-04-04 1954-10-05 Sudo Hidenori Zigzag sewing mechanism of doublethread sewing machine
US5797243A (en) * 1994-05-27 1998-08-25 I.M.A. Industria Macchine Automatiche S.P.A. Method for closing a filter bag for infusible products and for connecting a tagged thread thereto

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1879449A (en) * 1931-01-07 1932-09-27 Singer Mfg Co Sewing machine
US2114304A (en) * 1933-10-17 1938-04-19 Millie Patent Holding Co Inc Square tea bag machine
US2307998A (en) * 1939-04-29 1943-01-12 Pneumatic Scale Corp Tea bag
US2690723A (en) * 1950-04-04 1954-10-05 Sudo Hidenori Zigzag sewing mechanism of doublethread sewing machine
US5797243A (en) * 1994-05-27 1998-08-25 I.M.A. Industria Macchine Automatiche S.P.A. Method for closing a filter bag for infusible products and for connecting a tagged thread thereto

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20090601A1 (it) * 2009-09-22 2011-03-23 Mafram Macchine S R L Macchina da cucire con ago pivottante

Also Published As

Publication number Publication date
ITMI990976A1 (it) 2000-11-05
DE60009053T2 (de) 2005-03-03
EP1175344A1 (fr) 2002-01-30
EP1175344B1 (fr) 2004-03-17
IT1312393B1 (it) 2002-04-17
DE60009053D1 (de) 2004-04-22

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