US20020023577A1 - Device for controlling the pressure of fabric pressure shoes on sewing machines or the like - Google Patents

Device for controlling the pressure of fabric pressure shoes on sewing machines or the like Download PDF

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Publication number
US20020023577A1
US20020023577A1 US09/883,527 US88352701A US2002023577A1 US 20020023577 A1 US20020023577 A1 US 20020023577A1 US 88352701 A US88352701 A US 88352701A US 2002023577 A1 US2002023577 A1 US 2002023577A1
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US
United States
Prior art keywords
pressure
fabric
fact
automatic control
shoe
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.)
Abandoned
Application number
US09/883,527
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English (en)
Inventor
Carlo Guerreschi
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.)
Vi Be Mac SpA
Original Assignee
Vi Be Mac SpA
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 Vi Be Mac SpA filed Critical Vi Be Mac SpA
Assigned to VI.BE.MAC. S.P.A. reassignment VI.BE.MAC. S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GUERRESCHI, CARLO
Publication of US20020023577A1 publication Critical patent/US20020023577A1/en
Abandoned legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/06—Presser feet
    • D05B29/08—Presser feet comprising relatively-movable parts
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/02—Presser-control devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2207/00—Use of special elements
    • D05D2207/02—Pneumatic or hydraulic devices

Definitions

  • This industrial invention patent proposes a device for automatically controlling the pressure of fabric pressure shoes on preferably industrial-type sewing machines, meaning those equipped with claw, roller or belt conveying system or other similar conveying system.
  • the automatic control device according to the invention offers the basic advantage of having clearly improved thrust conditions on the fabric pressure shoes by greatly reducing inertia and by constantly maintaining correct working pressure at any speed and with any thickness of the fabric being processed.
  • Single or multi-needle machines are known, for example, used to sew garments such as jeans or casual pants in general, work clothes, shirts or even others.
  • FIG. 1 illustrates one of-these traditional pressure devices.
  • This device as is shown, includes pin A equipped with head B in which spring C is inserted.
  • Pin A slides in a special seat machined on shaft D of shoe E whereas the head of the pin itself is kept under pressure by presser F.
  • the height of this presser can be adjusted by screwing pawl G.
  • the object of the invention is to have conceived and created a device for automatic control of fabric pressure shoe pressure that is able to overcome the above-indicated inconveniences. That is able, in other words, to maintain constant shoe operating pressure during all sewing phases.
  • the fabric pressure shoe control system that has been conceived and created, in conformity to one of the main goals of the invention, is able to keep shoe operating pressure constant during all sewing phases independent from the thickness of the fabric. This makes the machine able to work on any fabric at high sewing speeds.
  • the invention in question is based, as mentioned previously, on installation of a control device that uses a totally automatic pneumatic-type system. This offers the basic advantage of guaranteeing constant operating pressure following initial adjustment of the shoe at a certain work pressure.
  • a device for automatic control of the fabric pressure shoe pressure on sewing machines preferably industrial sewing machines, characterized by the fact that it employs a pneumatic system that includes at least one cylinder in which a piston slides, piston that is connected, through special connections, to the fabric pressure shoe shaft and by the fact that the inner chamber of said cylinder is connected, through suitable tubes, to a pneumatic control system that includes special pressure regulators equipped with stabilizing valves or the like with adjustable settings.
  • FIG. 1 gives a schematic view of a traditional control system used to determine the pressure exerted by known fabric pressure shoes
  • FIG. 2 gives a schematic view of the device as a whole according to the invention for automatic control of the pressure exerted by fabric pressure shoes for industrial sewing machines or the like;
  • FIG. 3 gives a detailed schematic view of the pneumatic control device.
  • number 1 indicates the overall device according to the overall invention for automatic control of fabric pressure shoe pressure on industrial type sewing machines, meaning those equipped with claw, roller or belt conveying systems or any other similar conveying system.
  • Automatic control device 1 installed above shaft 2 on which fabric pressure shoe 3 is mounted, basically consists of cylinder 4 in which piston 5 slides.
  • FIG. 2 shows piston 5 , which is connected to shaft 2 of the shoe through arm 6 , mounts, along its external edge, a ring groove suitable for housing elastic ring or “O-ring” seal 7 with a round and floating type cross-section.
  • Seal 7 is the type suited to exert “floating” sliding by the piston inside the cylinder chamber: sliding with minimum friction and without any possibility of sticking to or “gluing” to the cylinder sleeve.
  • the top part of the cylinder chamber is connected to tube 8 which terminates at pneumatic control system 9 .
  • a special pressure regulator 10 belongs to this control system. This regulator is designed to control the pressure of the air circuit with great precision. This control is executed and performed by pressure regulator 10 using a suitable reducing and stabilizing valve. The delivery rate of this valve can be varied using pressure regulator 11 .
  • Compensation device 12 can if necessary be inserted between cylinder 4 and pressure regulator 10 . This device compensates for small variations in pressure before it trips the pressure regulator's valve.
  • pressure regulator 13 is connected, through tube 13 , to a pneumatic circuit that supplies the necessary amount of pressurized air.
  • Lifting of the shoe when introducing and extracting the fabric is also done using a pneumatic control system. This performs suitable changes in the pressure exerted by the pneumatic system in the upper chamber of the cylinder.
  • a second outlet, 14 is also provided for on the lower part of the cylinder. This has the advantage of being able to connect to an auxiliary pneumatic valve designed to help lift the shoe when introducing and extracting the fabric.
  • a technician in the sector can foresee several modifications and variants that can be brought to the device described and illustrated above as a non-exclusive example, offering solutions that are to be held to be included in the area of protection of the invention as defined by the following claims.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US09/883,527 2000-06-23 2001-06-18 Device for controlling the pressure of fabric pressure shoes on sewing machines or the like Abandoned US20020023577A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000VR000060A IT1314415B1 (it) 2000-06-23 2000-06-23 Dispositivo per il controllo della pressione dei piedini premistoffaper macchine da cucire o simili.
ITVR2000A000060 2000-06-23

Publications (1)

Publication Number Publication Date
US20020023577A1 true US20020023577A1 (en) 2002-02-28

Family

ID=11461855

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/883,527 Abandoned US20020023577A1 (en) 2000-06-23 2001-06-18 Device for controlling the pressure of fabric pressure shoes on sewing machines or the like

Country Status (8)

Country Link
US (1) US20020023577A1 (it)
JP (2) JP2002018167A (it)
KR (1) KR100463468B1 (it)
CN (1) CN1201042C (it)
DE (1) DE10129690B4 (it)
ES (1) ES2203288B1 (it)
IT (1) IT1314415B1 (it)
MX (1) MXPA01006539A (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140359987A1 (en) * 2012-01-16 2014-12-11 Shijiazhuang Success Machinery Electrical Co., Ltd. Single-cylinder single-claw double-card punching machine

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4455240B2 (ja) * 2004-09-10 2010-04-21 Ｊｕｋｉ株式会社 ミシン
DE102007052876A1 (de) * 2007-11-07 2009-05-20 Dürkopp Adler AG Nähmaschine
DE102008016353A1 (de) * 2008-03-29 2009-10-08 Dürkopp Adler AG Nähmaschine
JP5969202B2 (ja) * 2011-11-16 2016-08-17 ペガサスミシン製造株式会社 ミシンの布切り装置
CN104294486B (zh) * 2014-09-30 2017-01-11 浙江理工大学 一种缝纫机压脚压力检测装置及检测方法
JP2018051147A (ja) * 2016-09-30 2018-04-05 ブラザー工業株式会社 ミシンとミシンの制御方法
CN108035080B (zh) * 2018-01-11 2020-02-18 朱繁荣 一种缝纫机气缸针座
CN111424381B (zh) * 2019-01-10 2022-02-01 杰克缝纫机股份有限公司 一种压杆机构及缝纫机
CN109778438A (zh) * 2019-03-19 2019-05-21 张婷 一种压脚机构及其应用的缝纫机
CN112553792A (zh) * 2019-11-08 2021-03-26 徐州力达缝纫设备制造有限公司 一种缝纫机压脚机构
CN110952230B (zh) * 2019-12-23 2020-08-04 江苏爱护佳健康科技有限公司 一种自动化双针平缝车压脚装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024826A (en) * 1975-08-22 1977-05-24 Blue Bell, Inc. Tension attachment for sewing machines
DE3724786A1 (de) * 1987-07-27 1989-02-16 Pfaff Ind Masch Naehmaschine mit einer obertransporteinrichtung
DE8807493U1 (de) * 1988-06-09 1988-07-21 Dürkoppwerke GmbH, 4800 Bielefeld Nähmaschine mit einer druckmittelbetätigbaren Vorrichtung zum Erzeugen einer veränderbaren, auf einen Stoffdrücker einwirkenden Andrückkraft
GB8915254D0 (en) * 1989-07-03 1989-08-23 T & N Technology Ltd Bearings
JP2660235B2 (ja) * 1989-12-11 1997-10-08 ペガサスミシン製造株式会社 ミシンの押え金加圧装置
JPH04114693A (ja) * 1990-09-04 1992-04-15 Juki Corp ミシンの布押え装置
JPH04208192A (ja) * 1990-11-30 1992-07-29 Juki Corp ミシンの押え圧調整装置
JPH06269584A (ja) * 1993-03-22 1994-09-27 Brother Ind Ltd ミシン
JPH10216381A (ja) * 1997-02-06 1998-08-18 Juki Corp ミシンの布押え装置
DE19728817C1 (de) * 1997-07-05 1998-06-04 Duerkopp Adler Ag Betätigungseinrichtung für den Stoffdrücker einer Nähmaschine
JP2000051558A (ja) * 1998-08-04 2000-02-22 Hirokatsu Nakano 流体の作用を活用したミシンの布地押え棒

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140359987A1 (en) * 2012-01-16 2014-12-11 Shijiazhuang Success Machinery Electrical Co., Ltd. Single-cylinder single-claw double-card punching machine
US9902515B2 (en) * 2012-01-16 2018-02-27 Shanghai Sunson Activated Carbon Technology Co., Ltd. Single-cylinder single-claw double-card punching machine

Also Published As

Publication number Publication date
KR20020000529A (ko) 2002-01-05
ES2203288B1 (es) 2005-04-01
DE10129690B4 (de) 2004-12-30
CN1331357A (zh) 2002-01-16
ITVR20000060A1 (it) 2001-12-23
DE10129690A1 (de) 2002-01-03
KR100463468B1 (ko) 2004-12-29
ES2203288A1 (es) 2004-04-01
ITVR20000060A0 (it) 2000-06-23
JP2004305773A (ja) 2004-11-04
IT1314415B1 (it) 2002-12-13
JP2002018167A (ja) 2002-01-22
CN1201042C (zh) 2005-05-11
MXPA01006539A (es) 2004-12-03

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Legal Events

Date Code Title Description
AS Assignment

Owner name: VI.BE.MAC. S.P.A., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GUERRESCHI, CARLO;REEL/FRAME:012227/0652

Effective date: 20010620

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION