EP4459020A1 - Guide-fil avec oeillet de fil échangeable - Google Patents

Guide-fil avec oeillet de fil échangeable Download PDF

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Publication number
EP4459020A1
EP4459020A1 EP23171373.6A EP23171373A EP4459020A1 EP 4459020 A1 EP4459020 A1 EP 4459020A1 EP 23171373 A EP23171373 A EP 23171373A EP 4459020 A1 EP4459020 A1 EP 4459020A1
Authority
EP
European Patent Office
Prior art keywords
thread
thread guide
eyelet
guide arm
locking
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.)
Pending
Application number
EP23171373.6A
Other languages
German (de)
English (en)
Inventor
Chris HILLER
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.)
Karl Mayer Stoll R&D GmbH
Original Assignee
Karl Mayer Stoll R&D GmbH
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 Karl Mayer Stoll R&D GmbH filed Critical Karl Mayer Stoll R&D GmbH
Priority to EP23171373.6A priority Critical patent/EP4459020A1/fr
Priority to CN202410489086.2A priority patent/CN118895602A/zh
Publication of EP4459020A1 publication Critical patent/EP4459020A1/fr
Pending legal-status Critical Current

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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
    • D04B15/66—Devices for determining or controlling patterns ; Program-control arrangements
    • D04B15/80—Devices for determining or controlling patterns ; Program-control arrangements characterised by the thread guides used
    • 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
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D04B15/56—Thread guides for flat-bed knitting machines

Definitions

  • the invention relates to a thread guide, suitable for a knitting machine, in particular a flat embroidery machine, with a thread guide arm, to the free end of which a thread eyelet can be attached in a non-destructively detachable manner, wherein the thread guide arm has two legs at its free end which form a receptacle for the thread eyelet.
  • the invention further relates to a thread guide arrangement and a flat knitting machine.
  • the object of the present invention is therefore to provide a thread guide in which a separate replacement of the thread eyelet is possible without having to remove the thread guide or thread guide arm from a flat knitting machine and an accidental release of the thread eyelet from the thread guide arm is excluded.
  • a thread guide suitable for a knitting machine, in particular a flat knitting machine, with a thread guide arm, to the free end of which a thread eyelet can be attached in a non-destructively detachable manner
  • the thread guide arm has two legs at its free end, which form a receptacle for the thread eyelet, wherein the legs are designed to be rigid and in the region of the receptacle at least one locking element for locking the thread eyelet on the thread guide, in particular on the thread guide arm, is arranged.
  • the term "rigid" in the sense of The present invention is to be understood as meaning that the legs are at least substantially rigid. In particular, they are rigid and inelastic.
  • the entire thread guide arm can be designed to be rigid.
  • the thread guide arm can be designed in several parts.
  • the thread guide arm can have a rod that is vertically movable with respect to a thread guide part that is attached to the thread guide box.
  • the thread eyelet can be arranged at the free end of this rod. Because the legs are designed to be rigid, it can be prevented that the legs widen when the flat knitting machine is in operation and that the thread eyelet is inadvertently released from the thread guide.
  • the locking element can hold the thread eyelet in its installed position. In particular, the thread eyelet can be held in a form-fitting manner on the thread guide arm.
  • the locking element can be designed so that it is automatically locked when the thread eyelet is fully inserted and the locking element cannot open again by itself when the thread eyelet is loaded.
  • the connection between the thread eyelet and the thread guide arm can be designed to be self-locking.
  • the locking element By unlocking the locking element, it is possible to release the thread eyelet from the thread guide arm without causing any damage.
  • the locking element can be moved from a locking position by releasing the positive connection between the thread guide arm and the thread eyelet and removing the thread eyelet from the thread guide arm.
  • the locking element can be designed to be elastic.
  • the locking element can protrude into the receptacle.
  • the locking element can be displaced by the thread eyelet or a corresponding tool and then reach a locking position due to its elasticity.
  • the locking element can be arranged on the thread guide or a thread eyelet.
  • the locking element is designed as a leaf spring.
  • the locking element can protrude diagonally downwards from the leg. It is preferred if the locking element is arranged on the thread guide. This allows the thread eyelet to be manufactured more cost-effectively, namely without having to provide a locking element on each thread eyelet.
  • the locking element can be formed in one piece with a leg or can be attached to a leg.
  • the locking element can be attached to the leg by means of a positive connection, an adhesive connection or a welded or soldered connection.
  • At least one leg can have a guide for the thread eyelet, along which the thread eyelet can be moved parallel to the longitudinal direction of the thread guide arm.
  • the thread guide - at least in the area of the holder - and the thread eyelet are designed symmetrically. This ensures that the thread eyelet is guided by one leg each on two opposite sides.
  • the guide can also ensure that the thread eyelet cannot twist with respect to the thread guide arm. In addition, there is no need to pay attention to the orientation of the thread eyelet when installing it. Because the thread eyelet is guided by at least one leg, the thread eyelet can be guided into its locking position. This simplifies assembly.
  • the thread guide arm can have a contact surface for the thread eyelet, which has an angle directed away from the free end of the thread guide arm to the longitudinal direction of the thread guide arm in the range of 90° to 160°, preferably 140°.
  • the contact surface limits the movement of the thread eyelet relative to the thread guide arm during the assembly of the thread eyelet and thus determines the assembly position.
  • this can be corresponding surface, in particular a positioning surface, of the thread eyelet, so to speak, so that the thread eyelet can additionally prevent the webs from widening during operation.
  • the scope of the invention also includes a thread guide arrangement with a thread guide according to the invention, wherein a thread eyelet is provided which is attached to the thread guide, in particular without play.
  • the attachment can be made by means of a positive fit, in particular via the locking element(s).
  • the thread eyelet can be held in a positive fit on the thread guide arm.
  • the thread eyelet can have a lateral guide, in particular a groove, for a leg of the thread guide arm, along which it can be moved parallel to the longitudinal direction of the thread guide arm. This allows the thread eyelet to be guided into its final position by the thread guide arm, which facilitates the installation of the thread eyelet.
  • the thread eyelet can have a locking geometry for locking with a locking element. This measure can ensure a positive connection or locking.
  • the locking geometry can comprise two stop surfaces for the locking element arranged at an angle ⁇ 90°.
  • One of the stop surfaces can be aligned essentially vertically and the other stop surface can be aligned essentially horizontally.
  • one stop surface is inclined slightly downwards relative to the horizontal so that the locking element can slide along the stop surface and reach the locking position.
  • the thread eyelet can have a positioning surface.
  • the positioning surface can interact with the contact surface of the leg.
  • the thread eyelet can be made of steel, in particular hardened steel, or ceramic. Alternatively or additionally, the thread eyelet can have a wear-resistant coating, for example made of chrome, nickel or ceramic.
  • the scope of the invention also includes a flat embroidery machine with a thread guide according to the invention and/or with a thread guide arrangement according to the invention.
  • the invention further relates to a removal tool suitable for removing a thread eyelet from a thread guide, with a receiving section for receiving the lower end of the thread eyelet and an actuating section for releasing locking element(s).
  • the locking elements can thus be widened by the removal tool and a locking mechanism can thus be released.
  • the thread eyelet can be received by the receiving section.
  • the removal tool can have a securing device for securely holding the thread eyelet.
  • the securing device can comprise a magnet or a clamping mechanism.
  • the Figure 1a shows a section of a flat knitting machine 100 with thread guide arrangements 1, which are mounted on several thread guide rails 10 so that they can move in the longitudinal direction of the thread guide rails 10.
  • these are independently driven thread guide arrangements 1, which are motor-driven without the influence of the carriage (not shown here).
  • the invention also relates to thread guide arrangements 1, which are moved, for example, by the carriage using corresponding driving devices.
  • the Figure 1b shows the two in the Figure 1a exemplified thread guide arrangements 1 in an enlarged view.
  • Each of the thread guide arrangements 1 comprises a thread guide box 2, with which the thread guide 20 is fastened to its respective thread guide rail 10, and a thread guide arm 3 fastened to the thread guide box 2 and extending vertically downwards from it.
  • the lower region of the thread guide arm 3 is designed to be vertically movable in the form of a rod 4, so that up and down movements of the thread eyelet 5 attached to the lower end of the thread guide arm 3 in the area of a receptacle 6 are possible.
  • embodiments are also conceivable in which the entire thread guide arm 3 carries out the vertical movements. Therefore, only the thread guide arm 3 will be mentioned below.
  • a receptacle 6 for receiving the thread eyelet 5 is provided at the lower end of the thread guide arm 3 - in the exemplary embodiment shown at the lower end of the rod 4.
  • the receptacle 6 is defined by two fork-shaped legs 6a, 6b. The legs 6a, 6b enclose the thread eyelet 5 between them.
  • the Figure 1c shows the thread guide arm 3 and the holder 6 with the two legs 6a, 6b as well as the thread eyelet 5 from the Figure 1b in an enlarged view.
  • Locking elements 7a, 7b are also shown, which are connected to the legs 6a, 6b of the receptacle 6. In the embodiment shown, they are positively connected to the legs 6a, 6b.
  • the locking elements 7a, 7b which are designed as spring elements, protrude into the receptacle 6. They protrude obliquely from the legs 6a, 6b in the direction of the free end of the thread guide arm 3 or in the direction of the thread eyelet 5.
  • the thread eyelet 5 is shown in the installed state.
  • the lower areas of the locking elements 7a, 7b hold the thread eyelet 5 in a form-fitting manner and press it downwards so that it is held in the assembly position on the thread guide arm 3 without play.
  • the legs 6a, 6b represent guides for the thread eyelet 5 on their sides facing the holder 6.
  • the thread eyelet 5 has corresponding guide grooves in which the legs 6a, 6b are received in sections. In order to reach the assembly position shown, the thread eyelet 5 can therefore be guided along the inner sides of the legs 6a, 6b so that it can perform a relative movement to the thread guide arm 3 in the longitudinal direction L of the thread guide arm 3 in order to reach the assembly position shown.
  • the Figure 2a shows a sectional view of the thread guide arm 3 in the area of the receptacle 6.
  • the locking elements 7a, 7b are designed as separate locking elements 7a, 7b and are attached to the thread guide arm 3, in particular to the legs 6a, 6b.
  • the locking elements 7a', 7b' in the embodiment according to the Figure 2b formed in one piece with the legs 6a, 6b, thus an integral part of the thread guide arm 3.
  • the legs 6a, 6b are designed to be rigid. When a thread eyelet 5 is inserted from above, the locking elements 7a, 7b, 7a', 7b' are pushed outwards and enable the thread eyelet 5 to be inserted easily. The legs 6a, 6b do not expand.
  • positioning surfaces 8a, 8b are arranged, on which the thread eyelet 5 with correspondingly designed contact surfaces 51, 52 (see Fig. 3a ) rests in its locked position (corresponds to the mounting position mentioned above).
  • the Figure 3a shows the thread guide arm 3 in a sectional view with the thread eyelet 5 inserted.
  • the thread eyelet 5 was inserted in the upper area of the holder 6, in particular above the locking elements 7a, 7b and moved downwards in the direction of the arrow U.
  • the thread eyelet 5 came into contact with the locking elements 7a, 7b and displaced them in the direction a of the associated double arrows BF.
  • the thread eyelet 5 rests with its contact surfaces 51, 52 on the positioning surfaces 8a, 8b.
  • the positioning surfaces 8a, 8b and thus also the contact surfaces 51, 52 have an angle ⁇ directed away from a free end of the thread guide arm 3 to the longitudinal direction L of the thread guide arm 3 of approximately 140°.
  • the locking elements 7a, 7b move back to their respective starting position due to their elasticity in the direction of arrow i of the double arrows BF, whereby they reach the locking geometries 53, 54 of the thread eyelet 5, in particular at the upper end of the thread eyelet 5.
  • the locking geometries 53, 54 are essentially designed as recesses, the contact surfaces 53a, 53b (see Figure 3b ) that form an angle ⁇ 90° to one another.
  • the contact surface 53a is aligned essentially vertically and the contact surface 53b is aligned essentially horizontally, with the contact surface 53b running slightly diagonally downwards to ensure that the locking element 7a can reach the locking geometry 53.
  • the Figure 4 shows the thread eyelet 5 in a partial sectional view.
  • the locking geometry 54 and a guide 60 designed as a groove can be seen particularly well here.
  • the contact surface 52 is shown, which can form a positive connection with the leg 6b, in particular can hook into it. The same applies to the contact surface 51 and the leg 6a.
  • the guide 60 and a guide 62 arranged on the opposite side are also the Figure 5 which shows a view of the thread eyelet 5 from below.
  • the legs 6a, 6b can engage in the guides 60, 62 and thus guide the thread eyelet 5 during a movement parallel to the longitudinal direction L of the thread guide arm 3.
  • the guide on opposite sides of the thread eyelet 5 can be used to prevent rotation.
  • a through opening 64 for a yarn can also be seen.
  • the Figure 6 shows a removal tool 70 for releasing the locking of the thread eyelet 5 on the thread guide arm 3 and for removing the thread eyelet 5 upwards.
  • the removal tool 70 has an actuating section 11 in the upper area, which has a width such that its lateral surfaces 11a, 11b come into contact with the locking elements 7a, 7b when moving in the direction of the arrow E and displace them in the direction a of the respective associated double arrow BF. This releases the locking of the thread eyelet 5 with the thread guide 20.
  • the removal tool 70 further comprises a receiving section 12 for the thread eyelet 5, wherein the receiving section 12 and the actuating section 11 can be connected to one another. This connection is shown in the Figure 6 covered by the thread eyelet 5.
  • the removal tool 70 can first be introduced with its actuating section 11 in the area of the receptacle 6 and moved downwards in the direction of arrow E in order to displace the locking elements 7a, 7b in the direction a of the double arrows BF.
  • the removal tool 70 can then be pivoted with its receptacle section 12 under the thread eyelet 5 and this can be removed upwards.
  • the removal tool 70 can additionally be equipped with a magnet or the like (not shown here) in order to hold the thread eyelet 5 securely on the removal tool 70. This prevents the thread eyelet 5 from falling into the knitting machine, for example into the needle space, during removal.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP23171373.6A 2023-05-03 2023-05-03 Guide-fil avec oeillet de fil échangeable Pending EP4459020A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP23171373.6A EP4459020A1 (fr) 2023-05-03 2023-05-03 Guide-fil avec oeillet de fil échangeable
CN202410489086.2A CN118895602A (zh) 2023-05-03 2024-04-23 具有能更换的导纱眼的导纱器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23171373.6A EP4459020A1 (fr) 2023-05-03 2023-05-03 Guide-fil avec oeillet de fil échangeable

Publications (1)

Publication Number Publication Date
EP4459020A1 true EP4459020A1 (fr) 2024-11-06

Family

ID=86328690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23171373.6A Pending EP4459020A1 (fr) 2023-05-03 2023-05-03 Guide-fil avec oeillet de fil échangeable

Country Status (2)

Country Link
EP (1) EP4459020A1 (fr)
CN (1) CN118895602A (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034806B (de) * 1955-04-21 1958-07-24 Jottka Metallwarenfabrik Inh E Fadenfuehrer fuer Cotton-Wirkmaschinen
US2857751A (en) * 1958-10-28 Yarn carriers for knitting machines
DE3310723C1 (de) * 1983-03-24 1984-09-13 H. Stoll Gmbh & Co, 7410 Reutlingen Fadenfuehrer fuer Flachstrickmaschinen
CN102978819A (zh) * 2012-11-19 2013-03-20 宝得粉末注射成形（常熟）有限公司 一种编织横机用纱嘴及纱嘴头的加工方法
CN204676249U (zh) * 2015-06-11 2015-09-30 瑞安市威克横机配件有限公司 一种可替换的乌斯嘴
EP3323921A1 (fr) 2016-11-22 2018-05-23 H. Stoll AG & Co. KG Guide-fil pour un métier à tricoter et métier à tricoter rectiligne
CN214032884U (zh) * 2020-11-30 2021-08-24 泉州市永祺塑胶电子有限公司 一种耐磨损的陶瓷横机纱嘴

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011113573B4 (de) * 2011-09-19 2014-09-11 H. Stoll Gmbh & Co. Kg Fadenführer für eine Flachstrickmaschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857751A (en) * 1958-10-28 Yarn carriers for knitting machines
DE1034806B (de) * 1955-04-21 1958-07-24 Jottka Metallwarenfabrik Inh E Fadenfuehrer fuer Cotton-Wirkmaschinen
DE3310723C1 (de) * 1983-03-24 1984-09-13 H. Stoll Gmbh & Co, 7410 Reutlingen Fadenfuehrer fuer Flachstrickmaschinen
CN102978819A (zh) * 2012-11-19 2013-03-20 宝得粉末注射成形（常熟）有限公司 一种编织横机用纱嘴及纱嘴头的加工方法
CN204676249U (zh) * 2015-06-11 2015-09-30 瑞安市威克横机配件有限公司 一种可替换的乌斯嘴
EP3323921A1 (fr) 2016-11-22 2018-05-23 H. Stoll AG & Co. KG Guide-fil pour un métier à tricoter et métier à tricoter rectiligne
CN214032884U (zh) * 2020-11-30 2021-08-24 泉州市永祺塑胶电子有限公司 一种耐磨损的陶瓷横机纱嘴

Also Published As

Publication number Publication date
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