EP0442876A1 - Cadre a broder de forme non circulaire. - Google Patents

Cadre a broder de forme non circulaire.

Info

Publication number
EP0442876A1
EP0442876A1 EP89905096A EP89905096A EP0442876A1 EP 0442876 A1 EP0442876 A1 EP 0442876A1 EP 89905096 A EP89905096 A EP 89905096A EP 89905096 A EP89905096 A EP 89905096A EP 0442876 A1 EP0442876 A1 EP 0442876A1
Authority
EP
European Patent Office
Prior art keywords
embroidery
frame
axes
cross
outer frame
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
EP89905096A
Other languages
German (de)
English (en)
Other versions
EP0442876B1 (fr
Inventor
Werner Kraft
Paul Reinheimer
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.)
GM Pfaff AG
Original Assignee
GM Pfaff AG
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 GM Pfaff AG filed Critical GM Pfaff AG
Publication of EP0442876A1 publication Critical patent/EP0442876A1/fr
Application granted granted Critical
Publication of EP0442876B1 publication Critical patent/EP0442876B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C9/00—Appliances for holding or feeding the base fabric in embroidering machines
    • D05C9/02—Appliances for holding or feeding the base fabric in embroidering machines in machines with vertical needles
    • D05C9/04—Work holders, e.g. frames

Definitions

  • the invention relates to an embroidery hoop according to the preamble of claim 1 (Pfaff data sheet No. 296-12-16263 9/86 / G multi-head embroidery machine KSM 200).
  • Embroidery heads of embroidery machines used embroidery frames consist of a closed inner frame and a slotted outer frame connected at its ends by a tensioning device, which surrounds the inner frame with the interposition of the fabric.
  • the frames are made of the same material as wood or plastic.
  • To edit embroidery designs of different geometrical dimensions embroidery frames with a circular, elliptical to almost rectangular-like outline shape are included
  • the tensioning device arranged on the outer frame outside the plane of symmetry serves to adjust the holding force between the inner and outer frame and enables adaptation to different fabric thicknesses.
  • Frame parts in certain diameter gradations are known in order to eliminate the influence of the different radii of curvature.
  • the use of circular clamping frames is not appropriate.
  • the invention has for its object to develop an embroidery frame according to the preamble of claim 1 so that a largely uniform pressure distribution is achieved over the entire circumference of the embroidery frame between the inner and outer frame.
  • the pressure distribution is very even across the entire clamping area of the embroidery frame by reducing the tensile stiffness of the inner frame in the area of the smallest radius of curvature while maintaining a high bending stiffness and the associated low flexibility in the area of the small axis.
  • a particularly advantageous embodiment of the inner frame for realizing the features specified in claim 1 is specified in claim 2. Through this Shaping also achieves remarkable material savings.
  • the pressure distribution is further smoothed.
  • 1 is a plan view of a rectangular embroidery hoop with fillets and two turnbuckles
  • Fig. 2 is a plan view of a portion of the
  • Fig. 4 is a section along the line IV-IV of Fig. 2 and
  • the embroidery hoop consists of a closed inner hoop (1) of approximately rectangular outline shape with fillets and one at (2) in the exemplary embodiment Slotted outer frame (3) in two places, which surrounds the inner frame (1) with embroidery material interposed.
  • the small axis of the embroidery frame is labeled (Sl) and the large axis is labeled (S2).
  • the areas of the inner and outer frame (1 and 3) with the smallest radius of curvature are designated with (R min). These are the areas in which there are high pressure concentrations if the cross-section of the inner and outer frame over the entire development length is uniformly continuous z.
  • B. is rectangular.
  • a turnbuckle (4) is provided, which consists of two tabs (5, 6) on both sides of the separation point (2) on the outside of the outer frame (3) z. B. are attached by riveting and are bent at their separation point (2) adjacent end to an eyelet (7, 8).
  • eyelet (7) of the one tab (5) is a cylindrical, provided with a transverse threaded bore
  • the horizontal web (14) has a threaded hole for fastening the embroidery frame by toggle screws (15) which are carried out through a through hole in the frame guide (12).
  • the cross-sectional shape in addition to other conceivable cross-sectional shapes, is preferably designed such that the inner frame has an essentially rectangular cross-section in the region of both the small and the large axis, which, starting therefrom, merges continuously into a T-shaped cross-section with a horizontally inwardly directed web and in Area of the smallest radius of curvature reached a minimum.
  • a uniform pressure distribution is also achieved by a corresponding design of the outer frame (3) with a stiffness distribution that is opposite to that of the inner frame (1) and a modulus of elasticity that is half that of the inner frame (1).
  • the sections of the outer frame (3) between two axes have, according to the invention, on the outside of the large axis (S2) and the smallest cross section starting against the small axis (Sl), there is a steady transition from a T-profile rotated by 90 with a horizontally outwardly directed web according to FIG. 3 to a rectangular cross section corresponding to FIG. 4, which is in the region of the smallest radius of curvature (R min) reached a maximum and from there continued into the profile rotated by 90 with a horizontally outwardly directed web according to FIG. 5, the smallest cross section of which is reached on the small axis (S1).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

Ce tambour a pour but d'obtenir une distribution égale de la pression sur toute la surface par serrage entre le cadre intérieur et le cadre extérieur. A cet effet, la forme de la section du cadre intérieur (1), dans la portion entre les deux axes (S1, S2), est telle que la résistance à la flexion sur tout le pourtour de ce cadre (1) est approximativement constante et que la résistance à l'allongement entre ces deux axes (S1, S2) est continuellement diminuée de façon à atteindre un minimum dans la région du plus petit rayon de courbure (Rmin). La forme de la section du cadre extérieur (3), dans la portion entre les axes (S1, S2), est telle que la résistance à l'allongement entre les axes (S1, S2) varie en sens inverse de celle du cadre intérieur (1). Le tambour est destiné à serrer la matière à broder. Il est utilisable dans le brodage manuel et dans le brodage à la machine.
EP89905096A 1988-06-14 1989-04-21 Cadre a broder de forme non circulaire Expired - Lifetime EP0442876B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3820215A DE3820215C1 (fr) 1988-06-14 1988-06-14
DE3820215 1988-06-14

Publications (2)

Publication Number Publication Date
EP0442876A1 true EP0442876A1 (fr) 1991-08-28
EP0442876B1 EP0442876B1 (fr) 1993-11-24

Family

ID=6356517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89905096A Expired - Lifetime EP0442876B1 (fr) 1988-06-14 1989-04-21 Cadre a broder de forme non circulaire

Country Status (5)

Country Link
US (1) US5237941A (fr)
EP (1) EP0442876B1 (fr)
JP (1) JPH04506837A (fr)
DE (1) DE3820215C1 (fr)
WO (1) WO1989012710A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5819675A (en) * 1997-04-02 1998-10-13 French; Nick L. Finished cap frame for embroidery of logos
US6189468B1 (en) 2000-03-21 2001-02-20 Nick L. French Support for cap embroidery frames with tension member
US6394012B1 (en) 2001-05-11 2002-05-28 Nick L. French Fabric frame holder for embroidery
US6679190B1 (en) 2001-06-01 2004-01-20 Nick L. French Fabric holder for embroidery frames
JP2006144200A (ja) * 2004-11-24 2006-06-08 Brother Ind Ltd 刺繍枠
JP6155901B2 (ja) 2013-06-27 2017-07-05 ブラザー工業株式会社 刺繍枠及びミシン
JP6102569B2 (ja) * 2013-06-27 2017-03-29 ブラザー工業株式会社 刺繍枠及びミシン
JP2015175071A (ja) * 2014-03-14 2015-10-05 ブラザー工業株式会社 保持部材
CN114855379B (zh) * 2022-04-29 2023-08-08 常州纺织服装职业技术学院 一种便于张紧绣布的刺绣架

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US623301A (en) * 1899-04-18 Em broidery-frame
SU761636A1 (ru) * 1975-04-28 1980-09-07 Elizar G Kabirov Пяльцы
US4422251A (en) * 1979-04-16 1983-12-27 Hedrick Virginia L Apparatus for quilting
US4247998A (en) * 1979-11-29 1981-02-03 Foss Mildred B Machine embroidery hoop
JPS6035458B2 (ja) * 1980-08-02 1985-08-14 アイシン精機株式会社 刺しゆう枠
US4451997A (en) * 1981-03-30 1984-06-05 Bruna Jones Stretcher frame for holding fabric
US4642924A (en) * 1984-01-10 1987-02-17 Blue Bell, Inc. Embroidery hoop
JPH047198Y2 (fr) * 1986-11-14 1992-02-26

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8912710A1 *

Also Published As

Publication number Publication date
JPH04506837A (ja) 1992-11-26
US5237941A (en) 1993-08-24
DE3820215C1 (fr) 1989-08-17
WO1989012710A1 (fr) 1989-12-28
EP0442876B1 (fr) 1993-11-24

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