EP1061170A2 - Came pour machines à coudre, en particulier pour machines à coudre les boutonnières - Google Patents

Came pour machines à coudre, en particulier pour machines à coudre les boutonnières Download PDF

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Publication number
EP1061170A2
EP1061170A2 EP00111540A EP00111540A EP1061170A2 EP 1061170 A2 EP1061170 A2 EP 1061170A2 EP 00111540 A EP00111540 A EP 00111540A EP 00111540 A EP00111540 A EP 00111540A EP 1061170 A2 EP1061170 A2 EP 1061170A2
Authority
EP
European Patent Office
Prior art keywords
cam
adjustable
disk
whose angular
angular position
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.)
Withdrawn
Application number
EP00111540A
Other languages
German (de)
English (en)
Other versions
EP1061170A3 (fr
Inventor
Michal Vyroubal
Josef Nejedly
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.)
AMF REECE CR as
Original Assignee
AMF REECE CR as
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 AMF REECE CR as filed Critical AMF REECE CR as
Publication of EP1061170A2 publication Critical patent/EP1061170A2/fr
Publication of EP1061170A3 publication Critical patent/EP1061170A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D05B3/06—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 for sewing buttonholes

Definitions

  • the invention relates to a cam for sewing machines, in particular for chainstitch buttonhole sewing machines, intended to control the transverse motion of the bed and comprising a cam holder.
  • each buttonhole sewing machine is supplied with a set of sixteen interchangeable cams for basic shapes and sizes of buttonholes.
  • the cam for sewing machines whose principle consists in that the cam holder carries at least three cam disks, with a part of the cam path of the bed transverse motion provided on the periphery of each of them, and that the angular positions of at least two of said cam disks are adjustable.
  • the chief advantage of the invention consists in the possibility of stepless adjustment of the sizes (lengths) of the buttonhole to be sewn.
  • each of the disk cam whose angular position is adjustable is coupled with adjustment means of its own.
  • adjustable cam disk as hereinafter used is intended to mean cam disk with adjustable angular position
  • the adjustable cam disks are at least on a part of their inner periphery fitted with an inner gearing, each adjustable cam disk meshing with a gear wheel related thereto. Besides, the gear wheels mesh with each other and one of them is coupled with an adjustment means. In case of two cam disks, this arrangement provides for the opposite sense of rotation of the cam disks.
  • the adjustable cam disks are seated on one side of a non-adjustable cam disk which simplifies the cam design and permits to make the non-adjustable cam disk of full material.
  • the non-adjustable cam disk is fitted with an interchangeable segment having provided thereon at least a part of the cam path of the non-adjustable cam disk used for stitching the buttonhole eye.
  • a further increase in the length range of sewn buttonholes can be achieved by inserting between the non-adjustable cam disk and its adjoining adjustable cam disk at least one rotatably mounted auxiliary overlapping disk coupled with the non-adjustable cam disk and coupled in motion with one of the adjustable cam disks.
  • the auxiliary overlapping disk is fitted with two grooves into the second of which there is inserted a limiting pin fixed in the non-adjustable cam disk while into the first of them there is introduced a drive pin fixed in one of the adjustable cam disks.
  • FIG. 1 Examples of embodiment of the cam for sewing machines according to the invention are schematically shown in Figs. 1 to 5 of the accompanying drawings in which show Fig. 1 view on the cam in exploded state, Fig. 2 view on the cam with auxiliary overlapping disk in exploded state, Fig. 3a axonometric view on the cam shown in Fig. 2, Fig 3b view from below on the cam shown in Fig. 2, Fig. 4a axonometric view on the cam shown in Fig. 1, Fig. 4b view on the interchangeable segments and Fig. 5 axonometric view on the cam shown in Fig. 1 in partial section.
  • the cam for sewing machines in particular for chainstitch buttonhole sewing machines, is in a well-known manner coupled with the bed of the sewing machine and serves to control the bed transverse path.
  • the cam comprises a non-adjustable cam disk 1 with a part of the cam path 11 provided on its periphery.
  • a part of the non-adjustable cam disk 1 is made as a cylindrical support 12 having provided therein recesses 13 , 14 for gear wheels.
  • a part of the cam path 11 of the non-adjustable cam disk 1 is made on an interchangeable segment 15 which is fixed to the non-adjustable cam disk 1 .
  • the cam path 11 on the interchangeable segment 15 serves to produce the buttonhole eye.
  • the cylindrical support 12 and the ring-shaped section 16 of the non-adjustable cam disk 1 carry respectively a first adjustable cam disk 2 and a second adjustable cam disk 3 fitted with the parts 21 , 31 of the cam path on their outer peripheries and with inner gearings 22 , 32 on a part of their inner peripheries.
  • Gear wheels 4 , 5 are rotatably mounted in the recesses 13 , 14 of the cylindrical support 12 of the non-adjustable cam disk 1 , and each of them meshes with the inner gearing of one of the adjustable cam disks 2 , 3 .
  • the gear wheels 4 , 5 mesh with each other.
  • the second adjustable cam disk 3 is overlapped from above by an overlapping plate 6 fixed to the front of the cylindrical support 12 .
  • One of the gear wheels 4 , 5 is coupled with a turning means 7 shaped in the illustrated embodiment as a cylinder.
  • the gear wheels 4 , 5 are seated separately from each other, and each of them meshes with an inner gearing of each of the adjustable cam disks 2 , 3 .
  • Each of the gear wheels 4 , 5 meshes with a turning means 7 of its own.
  • an auxiliary overlapping disk 8 is inserted and on the cylindrical support 12 of the non-adjustable cam disk 1 rotatably mounted between the ring-shaped periphery 16 of the non-adjustable cam disk 1 and its adjoining first adjustable cam disk 2 .
  • the auxiliary overlapping disk 8 is equipped with two grooves 81 , 82 into the first one 81 of which there is inserted a drive pin 23 fixed in the first adjustable cam disk 2 and into the second one 82 of which there is inserted a limiting pin 17 fixed in the ring-shaped section 16 of the non-adjustable cam disk 1 .
  • a part of the cam path 83 is provided on the periphery of the auxiliary overlapping disk 8 .
  • the operator turns the turning means. This motion is transmitted, firstly, to the gear wheel 4 and then to the first adjustable cam disk 2 , and, secondly, to the second gear wheel 5 and then to the second adjustable cam disk 3 which thus receives a turning motion in a sense opposite to that of the first adjustable cam disk 2 .
  • the change in the mutual position of the cam paths of the non-adjustable cam disk 1 and of the two adjustable cam disks 2 , 3 results in the modification of the buttonhole length.
  • the operator exchanges the interchangeable segment 15 situated on the non-adjustable cam disk 1 .
  • the rotation of the adjustable cam disk 2 moves the drive pin 23 in the first groove 81 , reaches the end of the groove 81 and then begins to move the auxiliary overlapping disk 8 .
  • the second groove 82 moves in relation to the limiting pin 17 which thus reaches the end of the second groove 82 and also of the adjustable cam disks 2 , 3 .
  • a subsequent motion is possible only in the reverse direction. The turning movement in one direction increases the buttonhole length, and reduces it in the reverse direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Gears, Cams (AREA)
EP00111540A 1999-06-01 2000-05-30 Came pour machines à coudre, en particulier pour machines à coudre les boutonnières Withdrawn EP1061170A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ19991924A CZ288133B6 (cs) 1999-06-01 1999-06-01 Vačka šicích strojů, zejména dírkovacích šicích strojů
CZ192499 1999-06-01

Publications (2)

Publication Number Publication Date
EP1061170A2 true EP1061170A2 (fr) 2000-12-20
EP1061170A3 EP1061170A3 (fr) 2001-07-11

Family

ID=5464057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00111540A Withdrawn EP1061170A3 (fr) 1999-06-01 2000-05-30 Came pour machines à coudre, en particulier pour machines à coudre les boutonnières

Country Status (3)

Country Link
EP (1) EP1061170A3 (fr)
JP (1) JP2001009179A (fr)
CZ (1) CZ288133B6 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102733115A (zh) * 2012-07-19 2012-10-17 中捷缝纫机股份有限公司 一种缝纫机的手轮
CN111575921A (zh) * 2020-05-16 2020-08-25 三门听净纺织有限公司 一种钉扣机上的纽扣定位装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1366527A (en) * 1918-09-21 1921-01-25 United Shoe Machinery Corp Sewing-machine
US2190614A (en) * 1938-11-30 1940-02-13 Singer Mfg Co Buttonhole sewing machine
US2301797A (en) * 1940-09-21 1942-11-10 Singer Mfg Co Buttonhole sewing machine

Also Published As

Publication number Publication date
EP1061170A3 (fr) 2001-07-11
CZ288133B6 (cs) 2001-04-11
JP2001009179A (ja) 2001-01-16
CZ9901924A3 (cs) 2001-01-17

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