EP0807705B1 - Improved industrial-use sewing machine adapted to perform two sequential seams, and to vary either leftwardly or rightwardly the stitch felling direction - Google Patents

Improved industrial-use sewing machine adapted to perform two sequential seams, and to vary either leftwardly or rightwardly the stitch felling direction Download PDF

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Publication number
EP0807705B1
EP0807705B1 EP97830214A EP97830214A EP0807705B1 EP 0807705 B1 EP0807705 B1 EP 0807705B1 EP 97830214 A EP97830214 A EP 97830214A EP 97830214 A EP97830214 A EP 97830214A EP 0807705 B1 EP0807705 B1 EP 0807705B1
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EP
European Patent Office
Prior art keywords
sewing machine
cloth
parts
seamed
sewing
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.)
Expired - Lifetime
Application number
EP97830214A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0807705A2 (en
EP0807705A3 (en
Inventor
Giovanni c/o MACPI S.P.A. Pressing Di Cartabbia
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.)
Macpi SpA
Original Assignee
Macpi SpA
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Filing date
Publication date
Application filed by Macpi SpA filed Critical Macpi SpA
Publication of EP0807705A2 publication Critical patent/EP0807705A2/en
Publication of EP0807705A3 publication Critical patent/EP0807705A3/en
Application granted granted Critical
Publication of EP0807705B1 publication Critical patent/EP0807705B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B35/00—Work-feeding or -handling elements not otherwise provided for
    • D05B35/02—Work-feeding or -handling elements not otherwise provided for for facilitating seaming; Hem-turning elements; Hemmers

Definitions

  • the present invention relates to an improved industrial-use sewing machine adapted to perform two sequential seams, and to vary either leftwardly or rightwardly the stitch felling direction.
  • This seaming operation usually consists of coupling to one another by a first seam, two parts of a cloth article to be seamed, and then bending the thus seamed parts, under either one or the other of the two portions of the cloth article extending from the two seamed parts of borders.
  • Prior industrial sewing machines for performing the above mentioned operations conventionally operate in two subsequent operating steps, i.e. by using two different sewing machines, or by using a single sewing machine which, however, requires that several parts of the machine be replaced, depending on a leftwardly or rightwardly felling operation to be performed, or depending on the seamed cloth article parts seamed by the first seaming operation be bent under either one or the other of the two portions of the cloth article seamed at the two mentioned parts of borders.
  • the aim of the present invention is to overcome the above mentioned drawback, by providing an improved industrial use sewing machine which is specifically designed for performing two immediately sequential seams, with the additional capability of changing the felling direction, either rightwardly or leftwardly, without requiring any replacing or fitting operations.
  • a main object of the present invention is to provide such a sewing machine which, since it does not require any fitting operations for performing felling seaming operation, independently from the direction of the latter, provides a very high production yield, while reducing to a minimum the operation cost.
  • Another object of the present invention is to provide such a sewing machine which is very safe and reliable in operation.
  • Yet another object of the present invention is to provide such a sewing machine providing very accurate sequential seams, independently from the felling operation direction.
  • an industrial-use sewing machine adapted to perform two sequential seams, and to vary either leftwardly or rightwardly the stitch felling direction
  • said sewing machine comprises two sewing units, respectively a horizontal needle bar sewing unit and a vertical needle bar sewing unit, sequentially arranged along a cloth article feeding direction, along said cloth article feeding direction being moreover provided, under a cloth article bearing panel, a first guide defining a first passage for the two parts or borders of the cloth article to be seamed, which parts can be mutually arranged in a facing relationship on a substantially vertical plane, near the horizontal needle bar, and a second guide, arranged between said horizontal needle bar sewing unit and said vertical needle bar sewing unit, said second guide defining a second passage for the two parts of said cloth article, seamed by said horizontal needle bar sewing unit, and being provided moreover with means for bending said two seamed cloth article parts, in a direction transversal of
  • the sewing machine according to the present invention which has been generally indicated by the reference number 1, comprises two sewing units, respectively a horizontal needle bar sewing unit 2 and a vertical needle bar central sewing unit 3, which are sequentially arranged, or cascade arranged, along the cloth article to be seamed feeding direction 4.
  • the sewing units 2 and 3 can comprise two sewing units, respectively of a horizontal needle bar type and a vertical needle bar type, of conventional type, for example of the type comprising a main shaft 5, rotatively driven about its rotary axis, for example by an electric motor which, through a suitable transmission, including, for example, driving belts 6 and 7, drives two driven shafts 8 and 9 which, in turn, by known types of linkage and cam systems, which have been only partially shown in the figures of the accompanying drawings, will drive the horizontal needle bar 10 of the sewing unit 2 and the vertical needle bar 11 of the sewing unit 3.
  • a suitable transmission including, for example, driving belts 6 and 7, drives two driven shafts 8 and 9 which, in turn, by known types of linkage and cam systems, which have been only partially shown in the figures of the accompanying drawings, will drive the horizontal needle bar 10 of the sewing unit 2 and the vertical needle bar 11 of the sewing unit 3.
  • the two driven shafts 8 and 9 instead of being coupled to a single and same main shaft 5, can also be driven by individual electric motors, suitable synchronized with one another so as to provide a desired timing of the driving of the horizontal needle bar 10 with the vertical needle bar 11, as well as of the several component elements of the two sewing units 2 and 3, so as to progressively cause the cloth article to be seamed to advance along the cloth article feeding direction 4.
  • the sewing unit 2 is preferably arranged under a cloth article bearing panel 12, which is substantially horizontally arranged, for the two parts or borders 13a and 13b of the cloth article to be seamed to one another.
  • the bearing panel 12 is constituted by covering plates 14 and 15, having any suitable configurations, which are affixed to the bearing framework of the sewing machine.
  • the feeding of the cloth article to be seamed along the feeding direction 4 is obtained, in a per se known manner, for example by using feeding grippers, conventionally included in conventional horizontal needle bar sewing units and vertical needle bar sewing units.
  • the horizontal needle bar 10 can be provided with either one or more sewing needles 16, which are driven by the driven shaft 8, with a reciprocating translation motion along a substantially horizontal direction and transversal of the feeding direction 4.
  • the needle or needles 16 cooperate with one or more crochets, not shown in the drawings, of conventional types, in order to form the seaming stitches.
  • the sewing machine comprises moreover, near the working region of the horizontal needle bar 10, a first guide defining, in parallel to the feeding direction 4, a first passage 18 for the two parts or borders 20a and 20b of the cloth portions 13a and 13b to be seamed, which parts are arranged with a mutually facing relationship in a substantially vertical plane.
  • the first guide 17 comprises a needle plate 21, defining a bearing surface, which is substantially vertical and parallel to said feeding direction 4, for the two cloth parts or borders 20a and 20b and a foot element 22, facing the bearing plane or surface defined by the needle plate 21.
  • the needle plate 21 and the foot element 22 define therebetween a passage 18 for the two cloth parts or borders 20a and 20b.
  • the foot element 22 can swing about a vertical axis 23, which is laterally spaced from the needle plate 21, away from the needle plate 18 and against the biassing of a biassing spring 24, so as to fit the different thicknesses of the cloth parts 20a and 20b.
  • the needle plate 21 can be formed passage means for the cloth article feeding grippers, as the cloth article is seamed.
  • the covering plates 14 and 15, which define the bearing panel 12 for the cloth article to be seamed, also define the inlet of the first guide 17, which inlet substantially comprises two side walls 25a and 25b, which are progressively driven toward one another, according to the feeding direction 4, so as to greatly facilitate the introduction of the cloth parts 20a and 20b, in a substantially vertical direction, inside the passage 18.
  • the sewing machine according to the present invention comprises moreover a second guide 30, which is arranged in the machine region between the horizontal needle bar 10 and the vertical needle bar 11, along the feeding direction 4.
  • the second guide 30 defines a second passage 31 for the two cloth parts 20a and 20b, seamed to one another by the sewing unit 2, and said second guide is provided with bending means 32 for bending the two cloth parts 20a and 20b in a cross direction with respect to the mentioned feeding direction 4.
  • the following sewing unit 3 can perform a felling seaming operation of the two cloth parts 20a and 20b under either one or the other of the cloth portions 13a and 13b, depending on a rightwardly or leftwardly felling operation to be performed.
  • the second guide 30 comprises a supporting arm element 33, which is connected to the sewing machine supporting framework and which slidably supports, along a direction substantially perpendicular to the feeding direction 4, a plate-like element 35, in which is defined a guide groove 36 for the two cloth parts 20a and 20b.
  • a cut-out 37 which extends at the bottom the guide groove or channel 36.
  • top small plates 38a and 38b which are mutually facing along the feeding direction 4 and which define therebetween the second passage 31.
  • the top small plates 38a and 38b are connected to further small plates 39a and 39b which can slide either toward one another or away from one another, i.e. transversely of the feeding direction 4, in a sliding seat defined by a portion 40 of the supporting arm element 33 and by further bottom small plates 41a and 41b which are connected to the portion 40.
  • the plate-like element 35 in which is defined said guide channel or groove 36, can be driven, transversely of the feeding direction 4, by a pneumatic cylinder 43, which has a cylinder body pivoted to the sewing machine framework and the stem rod 43a of the piston of which operates on the plate-like element 35, as is shown in a more clearly manner in figures 7 and 8.
  • the small plates 38a and 38b are provided, on the end portions thereof facing the sewing unit 2, with lead-in bent portions 44a and 44b for the cloth parts 20a and 20b.
  • the sewing unit 2 is preferably mounted on a slide, which can be controllably driven, for example by a pneumatic cylinder provided with limit elements, or by a nut-nutscrew assembly, in a direction transversal of the feeding direction 4, with respect the sewing unit 2.
  • the subject sewing machine comprises moreover pneumatic means for allowing the cloth portions 13a and 13b to be held properly spread apart on the bearing panel 12, said portions 13a and 13b extending from the two cloth parts 20a and 20b being seamed during the felling seaming operation.
  • the above mentioned pneumatic means comprise pressurized air jet delivery nozzle 50 which are supported, immediately upstream of the working region of the vertical needle bar 11, and which are faced to the top of the bearing panel 12, so as to cause the cloth portions 13a and 13b to be held spread apart on said bearing panel 12, during the seaming operation.
  • entraining means Downstream of the vertical needle bar 11, according to the feeding direction 14, are provided entraining means for entraining or driving the seamed cloth article, said entraining or driving means being indicated by the reference number 60.
  • the mentioned driving means in particular, comprise a driving belt 61 entrained about a driving pulley 62 and two transmission pulleys 63 and 64, as well as a further tension pulley 65, according to a closed loop, extending, at least for a portion thereof, near the bearing panel 12, so as to engage by the top face thereof with the cloth article, upon seaming thereof, in order to cooperate with said grippers for causing said cloth article to be fed along the feeding direction 4.
  • the two cloth parts or borders 20a and 20b of the cloth portions 13a and 13b to be seamed are introduced by the operator, in a mutually facing relationship in a substantially vertical plane, into the first passage 18 defined by the first guide 17.
  • the thus engaged cloth parts 20a and 20b are driven along the feeding direction 4 and are subjected to the first seamed operation, performed by the horizontal needle bar 10.
  • the thus seamed cloth parts 20a and 20b will enter the second passage 31 of the second guide 30, the end portions of the two cloth parts 20a and 20b being arranged in the guide channel 36.
  • a corresponding displacement or driving movement is also applied to the seaming or sewing unit 3 which will perform, by means of the vertical needle bar 11, a felling seaming operation 70, as is clearly shown in figure 12.
  • the plate-like element 35 will be driven, by the mentioned driving pneumatic cylinder 43, in an opposite direction, so as to cause the cloth parts 20a and 20b to be bent under the cloth portion 13a to be affixed to this portion by the seam performed by the sewing unit 3, which will be displaced or driven transversely of the cloth article feeding direction 4 in the same direction as the driving direction applied to the plate-like element 35 in order to perform the felling seam 71, as clearly shown in figure 14.
  • a sewing machine which is specifically designed for performing either a rightwardly or leftwardly felling seaming operation, without requiring any replacing operations on parts of the sewing machine and, accordingly, without interrupting the operation of the sewing machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP97830214A 1996-05-16 1997-05-09 Improved industrial-use sewing machine adapted to perform two sequential seams, and to vary either leftwardly or rightwardly the stitch felling direction Expired - Lifetime EP0807705B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96MI000988A IT1283025B1 (it) 1996-05-16 1996-05-16 Macchina da cucire perfezionata per uso industriale in grado di ese- guire due cuciture in sequenza immediata, con la possibilita' di vari-
ITMI960988 1996-05-16

Publications (3)

Publication Number Publication Date
EP0807705A2 EP0807705A2 (en) 1997-11-19
EP0807705A3 EP0807705A3 (en) 1998-03-18
EP0807705B1 true EP0807705B1 (en) 2002-08-07

Family

ID=11374274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830214A Expired - Lifetime EP0807705B1 (en) 1996-05-16 1997-05-09 Improved industrial-use sewing machine adapted to perform two sequential seams, and to vary either leftwardly or rightwardly the stitch felling direction

Country Status (4)

Country Link
EP (1) EP0807705B1 (it)
JP (1) JPH1043450A (it)
DE (1) DE69714510D1 (it)
IT (1) IT1283025B1 (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107130370B (zh) * 2017-06-08 2023-01-20 际华橡胶工业有限公司 一种用于鞋后帮缝制的批缝器
CN112746399A (zh) * 2019-10-30 2021-05-04 精机机械厂股份有限公司 缝纫机的缝骨翻折装置
CN111424386B (zh) * 2020-04-07 2021-10-22 建德市恒欣家纺有限公司 一种纺织用缝纫机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2176643A (en) * 1938-01-31 1939-10-17 Man Sew Pinking Attachment Cor Method of making french seams
IT1246756B (it) * 1990-12-28 1994-11-26 Macpi Pressing Div Macchina da cucire, per uso industriale, a struttura perfezionata, atta a permettere l'esecuzione sumultanea di piu' cuciture, di tipo differenziato.
IT1256321B (it) * 1992-11-20 1995-11-30 Rimoldi Srl Metodo e macchina per l'esecuzione di cuciture su lembi di tessuti, e cucitura ottenuta

Also Published As

Publication number Publication date
EP0807705A2 (en) 1997-11-19
ITMI960988A0 (it) 1996-05-16
ITMI960988A1 (it) 1997-11-16
DE69714510D1 (de) 2002-09-12
JPH1043450A (ja) 1998-02-17
EP0807705A3 (en) 1998-03-18
IT1283025B1 (it) 1998-04-03

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