EP0646670B1 - Vorrichtung zur Steuerung von Maschinen - Google Patents

Vorrichtung zur Steuerung von Maschinen Download PDF

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Publication number
EP0646670B1
EP0646670B1 EP94114501A EP94114501A EP0646670B1 EP 0646670 B1 EP0646670 B1 EP 0646670B1 EP 94114501 A EP94114501 A EP 94114501A EP 94114501 A EP94114501 A EP 94114501A EP 0646670 B1 EP0646670 B1 EP 0646670B1
Authority
EP
European Patent Office
Prior art keywords
pressure
sensor
control signals
sensors
signal
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
EP94114501A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0646670A1 (de
Inventor
Franz Josef Prof. Kuhn
Siegfried Dipl.Ing. Kessler
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.)
Kessler GmbH
Original Assignee
Kessler 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 Kessler GmbH filed Critical Kessler GmbH
Publication of EP0646670A1 publication Critical patent/EP0646670A1/de
Application granted granted Critical
Publication of EP0646670B1 publication Critical patent/EP0646670B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/30—Controlling members actuated by foot
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/14—Devices for changing speed or for reversing direction of rotation
    • D05B69/18—Devices for changing speed or for reversing direction of rotation electric, e.g. foot pedals

Definitions

  • the invention relates to a device for controlling Machines, especially sewing machines, according to the generic term of claim 1.
  • a pedal in which a tread plate around a horizontal Axis is pivotally mounted on a base.
  • the pivoting position of the tread plate around the horizontal axis is mechanical, electronic or opto-electronic Devices detected, evaluated and in corresponding control signals implemented for the machine drive.
  • US-A-4,639,710 describes such a pedal, for example, with its help the resistance of an electrical circuit can be varied can.
  • Such foot pedals are used especially in standing workplaces used, but lead to a strong one physical strain on the worker. To move the Pedals is a one-sided shift in body weight a leg is required which leads to rapid fatigue of the leg muscles leads.
  • foot pedals are used by physically disabled people often not usable.
  • a pedal is proposed in FR-A-2 594 148 been made from a cantilever elastic
  • the strip is made with a magnet on the bottom is equipped. By pushing down the free end of the Strip, this magnet is approximated to a Hall sensor, whose tension changes as a result.
  • This pedal can be used with the Toes are operated, but is still the movement of Device parts necessary to control the machine.
  • the device according to the invention thus has control no more moving parts.
  • the operation takes place just by exerting different levels of pressure a pressure receiving area.
  • the device can thus both with the foot, the hand as well as with the arm or another Body part are operated. Equipped with such a device Machine workplaces are therefore also suitable for the disabled.
  • the physical strain on the operating personnel far less, and work a lot as a result less tiring.
  • the sensitivity of the at least one pressure or force sensor adjustable be to adapt to the individual needs of the Operating personnel or to the part of the body with which one Actuation of the device to be made to allow.
  • a locking device have the signal paths when a sensor responds interrupts at least some of the other sensors, damage to the machine or a workpiece to prevent when multiple machine functions at the same time are addressed that do not run together may be.
  • the signal evaluation device can also be a Analog / digital converter for generating digital control signals for the machine drive, since many machines nowadays can be controlled digitally. Often these control signals are also encoded in a certain way, for example in a modified Gray code, see above that the signal evaluation device expediently a Coding device for generating coded control signals for can have the machine drive. It is advantageous here if the coding device as an EPROM to enable simple adaptation of the device to machine drives, that require differently coded control signals, is trained.
  • the device can be used especially for controlling a sewing machine a pressure receiving area equipped with two pressure or force sensors have, the first sensor lifting the Presser foot and the thread cutter and the second sensor die Influence the speed selection of the sewing machine drive.
  • the first sensor thus takes over the functions previously performed by a heel actuation of a conventional foot pedal on sewing machines were achieved while the second sensor functions the foot pedal actuation.
  • two sensors can be placed side by side on a carrier plate be arranged, and the device can either by two-foot operation or by one-foot operation after turning the support plate can be actuated by 90 °. Through this change the change from two-foot operation to one-foot operation physical strain so that premature fatigue is prevented can be.
  • the single figure shows a block diagram of a device to control a sewing machine.
  • the device has two Pressure sensors 10 and 11 on their signal to one in the Figure characterized by a box signal evaluation device 12 direct.
  • the signals from sensors 10 and 11 are in the signal evaluation device 12 in separate circuits 13 and 14 processed.
  • the circuits 13 and 14 can have, for example, amplifiers and analog / digital converters.
  • the processed signals 15 and 16 become one Locking device 17 passed, which checks whether the two signals from sensors 10 and 11 compatible with each other are, d. H. whether functions of the machine are controlled that can actually do this in parallel.
  • the locking device 17 In the present Example of a sewing machine control in which the sensor 10 when lifting a first lower pressure of the presser foot and when exerting greater pressure Thread cutter operated while the pressure sensor 11 depending on applied pressure controls the speed of the machine drive, the locking device 17 must ensure that the Lock sensor signals 15 and 16 against each other, the Speed control always has priority.
  • the coding device 20 has the possibility in the present case the generation of control signals 24 based on different codes can be encoded.
  • the selection of the codes required for the control of the machine drive 21 In this case, an identification device 22 of the drive control 21 made.
  • the identification device 22 intervenes for this characteristic signals of the drive control 21 of the sewing machine from.
  • the signal evaluation device 12 also contains a power supply 22, with a power supply 23 for the two Pressure sensors 10 and 11 is coupled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Measuring Fluid Pressure (AREA)
  • Control Of Position Or Direction (AREA)
EP94114501A 1993-10-01 1994-09-15 Vorrichtung zur Steuerung von Maschinen Expired - Lifetime EP0646670B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9314892U 1993-10-01
DE9314892U DE9314892U1 (de) 1993-10-01 1993-10-01 Vorrichtung zur Steuerung von Maschinen

Publications (2)

Publication Number Publication Date
EP0646670A1 EP0646670A1 (de) 1995-04-05
EP0646670B1 true EP0646670B1 (de) 1999-08-11

Family

ID=6898831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94114501A Expired - Lifetime EP0646670B1 (de) 1993-10-01 1994-09-15 Vorrichtung zur Steuerung von Maschinen

Country Status (6)

Country Link
EP (1) EP0646670B1 (da)
DE (2) DE9314892U1 (da)
DK (1) DK0646670T3 (da)
ES (1) ES2134302T3 (da)
GR (1) GR3031550T3 (da)
TR (1) TR27891A (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5587634A (en) * 1994-11-29 1996-12-24 Ara Electronics Corp. Human body actuated control apparatus and system for commercial sewing machines
AT413459B (de) * 2003-07-15 2006-03-15 Arc Seibersdorf Res Gmbh Verfahren und einrichtung zur generierung eines schaltsignals

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479901A (en) * 1967-12-21 1969-11-25 Robert E Lee Arm control-mechanism for commercial-type sewing machines
DE2444189A1 (de) * 1974-09-16 1976-03-25 Siegfried Engelhardt Ohg Elektronische schalteinrichtung
DK143723A (da) * 1975-03-20
JPS54133942A (en) * 1978-04-06 1979-10-18 Koyo Seiko Co Speed controller for electric sewing machine
US4287843A (en) * 1979-02-09 1981-09-08 Janome Sewing Machine Co., Ltd. Electric sewing machine with a speed control system
JPS5797118A (en) * 1980-12-09 1982-06-16 Matsushita Electric Ind Co Ltd Speed setter of sewing machine
JPS57208881A (en) * 1981-06-15 1982-12-22 Matsushita Electric Ind Co Ltd Driving system for sewing machine
JPS5833993A (ja) * 1981-08-20 1983-02-28 Brother Ind Ltd モ−タの速度指令装置
CH660554A5 (de) * 1983-04-12 1987-05-15 Clayton Found Res Einrichtung zum ansteuern eines elektrisch betriebenen apparates.
US4639710A (en) * 1986-01-24 1987-01-27 Mcmillan Thomas A Foot pedal for varying resistance in an electrical circuit
FR2594148B1 (fr) * 1986-02-11 1988-11-10 Centre Tech Ind Habillement Pedale analogique, notamment pour machine a coudre.
DE4241446C1 (de) * 1992-12-09 1993-10-07 Pfaff Ag G M Betätigungsvorrichtung mit eingebautem Drehzahl-Sollwertgeber für den Antriebsmotor einer Nähmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Teschnische Übersicht, Interlink Electronics Europe, 2/90 *

Also Published As

Publication number Publication date
DE9314892U1 (de) 1993-12-23
DK0646670T3 (da) 2000-03-06
GR3031550T3 (en) 2000-01-31
TR27891A (tr) 1995-10-11
EP0646670A1 (de) 1995-04-05
ES2134302T3 (es) 1999-10-01
DE59408611D1 (de) 1999-09-16

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